ClimaCool UCW 30 Installation, Operation & Maintenance Manual

Model UCW/H 30, 50, 70, 85 Installation, Operation & Maintenance Manual ®

Pre-Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Physical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Dimensional Data and Drawings. . . . . . . . . . . . . . . . . . . . . . . . 4 Rigging and Lifting Procedures . . . . . . . . . . . . . . . . . . . . . . . . 5 Mounting Rail and Vibration Isolation. . . . . . . . . . . . . . . . . . . 6 Mounting Holes Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Recommended Service Clearances. . . . . . . . . . . . . . . . . . . . . . 8 Model Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Unit Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12 Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Voltage/Phase Monitor Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . 14 Water Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-16 Water Piping Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Hydronic Refrigeration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Part-Load Performance Advantage . . . . . . . . . . . . . . . . . . . . . 19 Filling the Water System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Water Treatment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Water Temperature Requirements . . . . . . . . . . . . . . . . . . . . . 22 Condenser & Evaporator Water Pressure Drop Charts. . . . 23 Glycol Performance Adjustment Factors Charts . . . . . . . . . 24-25 Pre-Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Pre-Startup Check List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-29 Superheat & Subcooling Flowchart. . . . . . . . . . . . . . . . . . . . 30 Startup and Warranty Form. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Chiller Operation and Maintenance. . . . . . . . . . . . . . . . . . . . 32 Heat Exchangers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Cleaning Arrangment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Operational Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Compressor Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Refrigeration Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . 37-38 Refrigeration System Re-Processing and Charging. . . . . . . 39 Engineering Guide Specifications. . . . . . . . . . . . . . . . . . . . 40-41 Options and Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Stainless Steel Strainer Option . . . . . . . . . . . . . . . . . . . . . . 43-47 WYE Strainers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-49 Basket Strainers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50-51 Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52-53 Power Distribution Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55-64 Troubleshooting Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . 65-66 Warranty Certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Table of Contents

leadership led to the Ultimate Chiller Solution design. Available in 30, 50, 70 and 85 tons, each module is compact, redundant, maneuverable, efficient, reliable and serviceable. Combined tonnages can obtain specific project turndown and capacity requirements from 30 to 1,000 tons per bank while having the ability to accommodate future growth and expansion needs. The UCW/H model can offer hot gas bypass, heat pump and heat recovery options utilizing environmentally friendly R-410A refrigerant for Green building designs. Safety Throughout this manual warning, danger, caution and attention notices appear. Read these items carefully before attempting any installation, service or troubleshooting of the equipment. All labels on unit access panels must be observed. DANGER: Immediate hazardous situation which, if not avoided, will result in death or serious injury. WARNING: Potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION: Potentially hazardous situation or an unsafe practice which, if not avoided, could result in minor or moderate injury or product or property damage. ATTENTION: Notification of installed, operation or maintenance information which is important, but not hazard related. Introduction If this unit uses a 3 Phase Scroll Compressor, the following instructions MUST BE followed: • Unit power supply MUST BE wired in the proper sequence to avoid damage to the 3 Phase Scroll Compressor; • Scroll Compressors with INCORRECT rotation show the following characteristics: - High sound level; - High suction pressure and low discharge pressure; - Low current draw. • If any of the three above characteristics exist, swap two of the three supply wires at the disconnect and recheck compressor for incorrect rotation. Si cet appareil utilise compresseur scroll 3-Phase, les instructions suivantes doivent être suivies: • L’alimentation de l’appareil doit être monté dans l’ordre correct pour éviter endommager le compresseur scroll 3-Phase • Compresseurs scroll avec rotation incorrecte montrent les caractéristiques suivantes: - Haut niveau de son; - Pression d’aspiration élevée et une faible pression de décharge; - Faible ampérage • Si l’un des trois éléments mentionnés ci-dessus sont remplies , échanger deux des trois lignes électriques alimen tant la interrupteur de sécurité et vérifier la rotation du compresseur. 3 PHASE SCROLL COMPRESSOR UNITS UNITÉ DE COMPRESSEUR SCROLL 3-PHASE CAUTION/ATTENTION WARNING/AVERTISSEMENT WATER AND REFRIGERANT SYSTEMS UNDER PRESSURE • Isolate/Lockout source and relieve pressure BEFORE servicing equipment. • Failure to relieve pressure may result in property damage, serious bodily injury or death! EAU ET FRIGORIGÈNE EQUIPEMENTS SOUS PRESSION • Isoler la source / de verrouillage et de soulager la pression avant entretien de l’équi- pement. • Le défaut de soulager la pression peut entraîner des dommages matériels, des blessures corporelles graves ou la mort! CAUTION/ATTENTION Excessive Chlorine, undissolved solids and other improper water conditions WILL DAMAGE the internal heat exchanger & WILL VOID YOUR WARRANTY! Chlore excessive, solides non dissous et les autres impropre conditions de l’eau, ENDOMMAGERA l’échangeur de chaleur interne et ANNULERA VOTRE GARANTIE! Disconnect power supply (ies) before servicing. Refer servicing to qualified service personnel. Electric shock hazard. May result in injury or death! Unit to be serviced by qualified personnel only. Refrigerant system under pressure. Relieve pressure before using torch. Recover refrigerant and store or dispose of properly. Debrancher avant d’entre- prendre le dépannage de l’appareil. Consulter un réparateur qualifie pour le dépannage. Risque de choc électrique. Résiltat de mai dans dommages ou la mort! Conifer la maintenance à un technicien qualifie. Le systéme frigorifique sous pression. Décomprimer avant d’exposer à la flamme. Récuperer le frigorigene et le stocker ou le détrulre correctement. WARNING/AVERTISSEMENT CAUTION/ATTENTION Very Hot Water! L’eau Trés Chaude! WARNING/AVERTISSEMENT CAUTION/ATTENTION Use only copper conductors for field installed wiring. Unit terminals are not designed to accept other types of conductors. Utilisez uniquement des conducteurs en cuivre pour le câblage. Bornes de l’unité ne sont pas conçus pour accepter d’autres types de conducteurs. ATTENTION To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must be serviced only by technicians who meet local, state and federal proficiency requirements. All refrigerant discharged from this unit must be recovered WITHOUT EXCEPTION. Technicians must follow industry accepted guidelines and all local, state and federal statues for the recovery and disposal of refrigerants. If a compressor is removed from the unit, system refrigerant circuit oil will remain in the compressor. To avoid leakage of compressor oil, the refrigerant lines of the compressor must be sealed after it is removed. Do not defeat, cap, add piping to the outlet of the valve or attempt to change the relief setting. ATTENTION CAUTION/ATTENTION Single wall heat exchanger, not suitable for potable water connection. Single paroi echangeur, non approprié pour le raccordement d'eau potable.

against the bill of lading and inspect each chiller for any damage incurred during shipment. Thoroughly check for any visible damage of control panels and electrical and/or refrigeration components or broken copper lines. The carrier must make proper notation of any damages or shortages on all copies of the bill of lading and complete a common carrier inspection report prior to your final acceptance of the shipment. Note: It is the responsibility of the purchaser to file all necessary claims with the carrier. In addition, please notify the ClimaCool Customer Service Department at 405.815.3000 or customerservice@ climacoolcorp.com of all damage immediately. Storage Chillers should be stored in an upright position and kept in a clean, dry area. Handling of Modules Carefully remove the module’s packaging. The chiller’s steel base cutouts provide maneuverability by forklift or pallet jack into its final position (See Rigging and Lifting Procedures on page 5). Verify that all header grooved couplings and mounting hardware kits are on site prior to connecting the modules. Note: Consult factory for handling other than in the upright position. Rigging and Lifting Each module should be lifted using a pallet jack or fork lift. If it is necessary to utilize a crane for rigging or lifting, each module shall be lifted using lifting straps and spreader bars using rigging points identified on Rigging and Lifting Procedures on page 5. Warranty To ensure proper equipment longevity, design performance and reliability, all ClimaCool chillers must be installed, operated and maintained in accordance with ClimaCool IO&M manuals. Water quality is of the utmost importance for the proper care and maintenance of your modular chiller system. Regular treatment of the water will increase longevity of your system. Failure to provide adequate filtration or treatment of evaporator and condenser water will void the ClimaCool module’s warranty. A factory authorized technician is required to perform the startup of your ClimaCool chiller. Please contact the ClimaCool Customer Service Department at 405-815-3000 or [email protected] to schedule. There is a minimum of three (3) weeks notice required to schedule your factory startup. Pre-Installation

30 50 70 85 Capacity (tons) ¹ 31.7 51.5 67.2 82.8 kW/Ton 0.738 0.746 0.744 0.740 Full-Load EER 2 16.3 16.1 16.1 16.2 Refrigerant Circuits (quantity) 2 2 2 2 Compressor Type Scroll Scroll Scroll Scroll Compressor Quantity 2 2 2 2 Compressor Nominal Hp (per circuit) 15 25 35 40 Refrigerant Charge R-410A (lbs) 30 55 60 80 Module Operating Weight w/Water (lbs) 3 1565 2405 2515 3075 Module Shipping Weight (lbs) 4 1375 2085 2195 2610 30 50 70 85 Heat Exchanger (type) Brazed Plate Brazed Plate Brazed Plate Brazed Plate Independent Refrigerant Circuits (quantity) 2 2 2 2 Water Storage Volume HX Only (gals) 3.2 6.1 7.3 11.4 Water Storage Volume HX Plus Main Headers (gals) 13.1 16.7 17.9 26.2 Maximum Design Working Pressure - Water Side (psi) 300 300 300 300 Header Water Connections - Inlet/Outlet (inches) 5 6 6 6 8 30 50 70 85 Heat Exchanger (type) Brazed Plate Brazed Plate Brazed Plate Brazed Plate Independent Refrigerant Circuits (quantity) 2 2 2 2 Water Storage Volume HX Only (gals) 2.8 5.1 6.5 9.7 Water Storage Volume HX Plus 6" Main Headers (gals) 12.8 15.7 17.1 24.5 System Volume (gals) 6 Min 180 300 420 510 Maximum Design Working Pressure - Water Side (psi) 300 300 300 300 Header Water Connections - Inlet/Outlet (inches) 5 6 6 6 8 Notes: 1. 2. 3. 4. Unit shipping weight includes refrigerant charge, compressor oil and packaging. 5. 6. Required to provide stable operation. Storage/buffer tanks in return piping may be utilized to meet the minimum volume requirements. 7. 85 ton module cannot be directly coupled with 30, 50 or 70 ton modules due to a difference in header and frame size. Module operational weight includes water, compressor oil, and refrigerant charge. Multiply times the number of modules for a total system operational weight. Tonnage ratings conditions: 44°F leaving chilled water temperature, 85°F entering condenser water temperature, flow rates are 3 gpm per ton through the condenser with a fouling factor of .00025 hr-ft2-°F/Btu and 2.4 gpm per ton through the evaporator with a .0001 hr-ft2-°F/Btu fouling factor. Ratings in accordance with AHRI Standard 550/590. Model UCW/H Condenser Model UCW/H Evaporator Main header water/fluid connections are 6" grooved coupling for the 30, 50 and 70 ton modules. The 85 ton module uses 8" grooved couplings. Model UCW/H Module and Compressor 30 50 70 85 Capacity (tons) ¹ 31.7 51.5 67.2 82.8 kW/Ton 0.738 0.746 0.744 0.740 Full-Load EER 2 16.3 16.1 16.1 16.2 Refrigerant Circuits (quantity) 2 2 2 2 Compressor Type Scroll Scroll Scroll Scroll Compressor Quantity 2 2 2 2 Compressor Nominal Hp (per circuit) 15 25 35 40 Refrigerant Charge R-410A (lbs) 30 55 60 80 Module Operating Weight w/Water (lbs) 3 1565 2405 2515 3075 Module Shipping Weight (lbs) 4 1375 2085 2195 2610 30 50 70 85 Heat Exchanger (type) Brazed Plate Brazed Plate Brazed Plate Brazed Plate Independent Refrigerant Circuits (quantity) 2 2 2 2 Water Storage Volume HX Only (gals) 3.2 6.1 7.3 11.4 Water Storage Volume HX Plus Main Headers (gals) 13.1 16.7 17.9 26.2 Maximum Design Working Pressure - Water Side (psi) 300 300 300 300 Header Water Connections - Inlet/Outlet (inches) 5 6 6 6 8 30 50 70 85 Heat Exchanger (type) Brazed Plate Brazed Plate Brazed Plate Brazed Plate Independent Refrigerant Circuits (quantity) 2 2 2 2 Water Storage Volume HX Only (gals) 2.8 5.1 6.5 9.7 Water Storage Volume HX Plus 6" Main Headers (gals) 12.8 15.7 17.1 24.5 System Volume (gals) 6 Min 180 300 420 510 Maximum Design Working Pressure - Water Side (psi) 300 300 300 300 Header Water Connections - Inlet/Outlet (inches) 5 6 6 6 8 Notes: 1. 2. 3. 4. Unit shipping weight includes refrigerant charge, compressor oil and packaging. 5. 6. Required to provide stable operation. Storage/buffer tanks in return piping may be utilized to meet the minimum volume requirements. 7. 85 ton module cannot be directly coupled with 30, 50 or 70 ton modules due to a difference in header and frame size. Module operational weight includes water, compressor oil, and refrigerant charge. Multiply times the number of modules for a total system operational weight. Tonnage ratings conditions: 44°F leaving chilled water temperature, 85°F entering condenser water temperature, flow rates are 3 gpm per ton through the condenser with a fouling factor of .00025 hr-ft2-°F/Btu and 2.4 gpm per ton through the evaporator with a .0001 hr-ft2-°F/Btu fouling factor. Ratings in accordance with AHRI Standard 550/590. Model UCW/H Condenser Model UCW/H Evaporator Main header water/fluid connections are 6" grooved coupling for the 30, 50 and 70 ton modules. The 85 ton module uses 8" grooved couplings.

LOAD WATER PIPING CONFIGURATION ARRANGEMENT (HEADER “A”) UCW UCH HEAT RECOVERY UCH HEAT PUMP (Cooling Priority) UCH HEAT PUMP (Heating Priority) CHILLED WATER OUTLET CHILLED WATER OUTLET LOAD WATER OUTLET LOAD WATER INLET LOAD WATER PIPING CONFIGURATION ARRANGEMENT (HEADER “B”) UCW UCH HEAT RECOVERY UCH HEAT PUMP (Cooling Priority) UCH HEAT PUMP (Heating Priority) CHILLED WATER INLET CHILLED WATER INLET LOAD WATER INLET LOAD WATER OUTLET Model UCW/H Voltage A Unit Width (in.) B Unit Height (in.) C Header Width (in.) D Unit Depth (in.) E Header Location F Header Location G Header Location H Header Location I Header Location J Header Location K Header Location Header Connection (in.)1 030 208/230/460/575/3/60 34 65 1/8 34 1/4 55 1/2 41 1/4 27 1/2 19 9 1/4 58 58 47 1/2 6 050 208/230/460/575/3/60 34 65 1/8 34 1/4 55 1/2 41 1/4 27 1/2 19 9 1/4 58 58 47 1/2 6 070 208/230/460/575/3/60 34 65 1/8 34 1/4 55 1/2 41 1/4 27 1/2 19 9 1/4 58 58 47 1/2 6 085 208/230/460/575/3/60 34 72 34 1/4 67 52 5/8 29 3/4 18 5/8 7 1/2 60 3/4 54 3/4 48 8 UNIT DIMENSIONS (IN INCHES) Note: 1. The model UCH085 cannot be directly coupled with models UCH030, 050 and 070 due to differences in header and frame size.

Note: If no spreader bar is used, damage to the module may occur. Figure 1 Figure 2 Lifting Strap Lifting Strap Spreader Bar Spreader Bar Spreader Bar Figure 1 Figure 2 Figure 3 Lifting and Transporting Modules Pallet jacks or forklifts are required for lifting and transporting the module. Each module has base cutouts provided for ease of maneuverability. 60” forks are recommended to prevent damage to chiller base. Rigging and Lifting Procedures

bolt holes provided in each base pan. Use bolts with a maximum diameter < 0.6”; length to be dependent on customer mechanical layout. See Base Pan top view drawing on the next page. Due to the low vibration of the modules, the application of spring isolators or pads is not required. Should isolators or pads be desired install in accordance with Figures 4 and 5. Figure 4 - Spring Vibration Isolators Option 4” Rail Minimum Recommended (by others) Spring Vibration Isolators (by others) 4” Rail Minimum Recommended (by others) 4” Rail Minimum Recommended (by others) Spring Vibration Isolators (by others) 4” Rail Minimum Recommended (by others) Note: Size and weight distribution is to be determined by a qualified structural engineer per individual job requirements. Figure 5 – Vibration Isolation Pads Option Mounting Rail and Vibration Isolation

33.675 The six mounting hole locations are circled in red. Dimensions are shown in inches. Top View of UC*030, 050, and 700 Base Pan Shown — Front of Unit 33.675

Notes: 1. Allow 36" clearance for electrical panels and 30" clearance for rear service access to modules. 2. Allow a minimum of 18" height clearance for 30, 50 and 70 ton modules. Allow a minimum of 24” height clearance for 85 ton modules. 3. Local building and/or electrical codes may require additional clearance. Consult applicable codes. CoolLogic Control Panel (Wall Mounted) Top View Rear Service Access Front Service Access 36” 36” 30” 30” 12”

9 ® www.climacoolcorp.com           Rejection Means                 H = High Temperature Model Configuration                 W = Water     E = Seismic Certification (030, 050 & 070 ton, Water Cooled only)     S = Standard     X = Special Options Nominal Tons 015 Refrigerant Options 025 0 = (None) 030 B = Hot Gas Bypass ‐ Both Circuits 050      (Not available with Heat Pump application) 070 P = Hot Gas Bypass with Pressure Relief Valves 085 R = Pressure Relief Valves  (standard for all UCR's) X = Special Options Design Series Water Isolation Valves A    0 = (None)    B = Evaporator & Condenser Motorized Valves    C = Evaporator Manual Valves & Motorized Condenser Valves       Voltage    E = Evaporator Motorized Valves & Manual Condenser Valves    F = 460/3/60 (less Manual Condenser Valves for Air Cooled)    H = 208‐230/3/60    M = Manual Valves  for Evap & Condsr    N = 575/03/60 (less Manual Condenser Valves for Air Cooled)    U = 380/3/50    X = Special Options   Application Controls & Electrical C = Cooling A = Standard Controls H = Heat Recovery S = Single Module Controls R = Reverse Cycle (Heat Pump) T = Single Module Controls with LonWorks X = Special Options X = Special Options   Refrigerant A = R‐410A   Compressor Type B = R‐134a (For use with hot water temperatures ≥ 140°, not available in 85 ton) S = Scroll X = Special Options X = Special Options ₁   ₂ UC F S ₈   ₄  ₅  ₆ ₇ ₉ ₁₀ 030 Ultimate Chiller Solution Model Key ₁₅ W A S A C A ₃ ₁₃ ₁₄ M 0 ₁₂ ₁₁ Model Key

and dehumidified space. The minimum foundation requirement for the chiller is a level surface capable of bearing the combined operating weight of the modules (See Physical Data on page 3). Service Access The recommended service clearances are 36” for front access, 18” height clearance for 30, 50 and 70 ton modules, and 24” height clearance for 85 ton module, 30” for rear access and at least 12” for side clearance or as required for field piping (See Recommended Service Clearances on page 7). Local building or electrical codes may require additional clearance – please consult applicable codes. Draining When performing standard maintenance procedures such as flushing a heat exchanger, it will be necessary to isolate either heat exchanger. ClimaCool modular chillers offer optional water isolation valves for this purpose. Access to a floor drain is helpful when performing standard maintenance procedures. Warning: Water valves must be reopened after flushing is complete. Assembling Modules ClimaCool recommends locking down the chiller to a concrete base or to three (3) 4” base mounting rails using the six (6) bolt holes provided in each base pan. Although the compressors are installed on anti-vibration mountings, further isolation of the chiller from the structure is recommended by installing vibration-eliminating springs or pads under the base rails on which the chiller will rest (See Mounting Rail and Vibration Isolation on page 6). One module should be chosen as the reference module and carefully located. Field installed mounting accessories are provided for adjoining each module. • Header grooved coupling kits containing four (4) grooved couplings with gaskets • Mounting hardware kit containing necessary bolts, spacers, nuts and washers • Header bank end cap kit containing four (4) grooved couplings with gaskets and four (4) end caps Field installing the mounting hardware kit will assist with alignment of the modules in a bank and eliminate offset inconsistencies. The 1/2” mounting holes are provided on sides of the unit base pan. First module should be set, set adjacent unit on mounting surface roughly aligned 1½ inches away from the first unit. While holding spacer in place work through first modules front base cutout to place a washer and insert bolt through front mounting hole and spacer. Repeat the process for the rear mounting hole. Line up mounting hole of adjacent module with bolt from previous module and working through adjacent modules front base cutout place a washer, split lock washer and nut. Using the appropriate tools tighten hardware assembly until seated. Inspect the pipe ends to ensure they are free from any indentations, projections, roll marks or other harmful surface defects such as loose paint, scale, dirt, chips, grease and rust. Inspect the grooved coupling gasket for any defects. Apply a thin layer of silicone or other non-petroleum lubricant to the sealing lips of the gasket as well as to the exterior of the gasket. Install gaskets on the pipe ends of one of the two modules to be mated. Be sure the gasket is completely on the pipe to avoid damage in the next step. Move the second module into position and line up the piping. Ensure you are maintaining alignment for any additional modules to be added. When pipe ends are aligned, slide the gasket over the ends and center it between the grooves. No part of the gasket should protrude into the groove of either pipe end. Place the coupling halves over the gasket and make sure that the coupling keys (the part that goes into the groove) are engaged into the grooves. Insert the bolts and install nuts to hand tight. Ensure the oval neck of the bolt engages into the bolt hole of the housing. Tighten nuts alternately and equally until the bolt pads meet and make metal to metal contact. Tighten nuts by another ¼ to ½ turn to make sure the nuts and bolts are snug and secure; the use of a torque wrench is usually not required. Uneven tightening of bolts may cause the gasket to be pinched resulting in immediate or delayed leaks. Header Insulation Chilled water piping is pre-insulated on each module at the factory (See Figure 7 - Header Insultation) with ¾” closed cell insulation. After bolting all modules together and leak testing, the entire coupling connection will need to be insulated by the installing contractor. Unit Installation Figure 6: Mounting Hardware Kit

Figure 7: Header Insulation Front Back Grooved Couplings Installation Inspect the pipe ends to ensure they are free from any indentations, projections, roll marks, or other harmful surface defects such as loose paint, scale, dirt, chips, grease and rust. Inspect the grooved coupling gasket for any defects. Grooved couplings are used to adjoin a bank of modules. This requires the temporary removal of all top, back and side sheet metal panels to obtain additional access to the headers. With the first unit positioned, the couplings can be installed using the following recommended instructions: Figure 9 - UCW/H Side View 3 1 2 4 Figure 10 Figure 11 • Remove the rubber gasket from the coupling. • Apply a thin layer of silicone or other non-petroleum lubricant to both the inner and outer surface of the gasket to reduce friction. • Slide the gaskets on the headers as shown in Figure 10. • Be sure the gasket is completely on the pipe to eliminate any damage to the gasket. • With gasket in place on each header of the positioned unit (see Figure 11), move the second module into position and line up the piping. Ensure alignment is maintained for any additional modules to be added. Sound Attenuation Panels and Gasket Attenuation panels are enclosures made of 18 gauge galvanized steel with powder coat paint finish and fiberglass insulation. Panel package includes one (1) upper panel made out of four (4) sections and one (1) lower panel for each side of bank (field installed), four (4) panels for each module in the bank (factory installed) and gasket sealant tape for installation between modules. Install panels by setting in place and locking down with the half turn latches or self tapping screws. Note: Panel package includes a compressed 1” x 1” gasket sealant tape for installation between modules. Install the tape on the outer frame on the side of one module prior to installing the adjacent modules. See Figure 8. • Review Figure 9, UCW/H Side View below. • Headers are numbered indicating the easiest order of coupling installation. • UCW/H chillers should have couplings installed on headers 1, 4 from the top and 2, 3 from the back of the unit.

and nut (see Figure 12). • Back the other nut off as far as possible while still keep- ing the coupling intact. • Install with the nuts facing up for fastening. • When the pipes ends are aligned, slide the gasket over the ends and center it between the grooves. • No part of the gasket should protrude into the groove of either pipe end. • Place coupling halves over the gasket and make sure that the coupling keys (the part that goes into the groove), are engaged into the grooves. • Insert the previously removed bolt from the bottom to re-attach the two sides of the coupling (see Figure 13). • Tighten nuts alternately and equally until the bolt pads meet and make metal-to-metal contact. • Tighten nuts by another ¼ to ½ turn to make sure the nuts and bolts are snug and secure, the use of a torque wrench is usually not required. • Uneven tightening of bolts may cause the gasket to be pinched resulting in immediate or delayed leaks. • Replace all sheet metal panels.

breaker/fused disconnect power supply within the main panel. The electrical service enters the individual modules through the top into the module’s ­control panel enclosure. Proper grounding of the module is mandatory. Before carrying out any electrical work, confirm that the main supply is isolated. A typical power wiring is located on page 47 – Power Distribution Drawing. Knockout drawings are provided. Do not drill into cabinet; shavings can damage electronic components. The power for all individual modules shall be in compliance with all local and national codes. CoolLogic Control System Wiring A separate 115 volt power supply is required to power the CoolLogic Master Control Panel. Communication between the Master Control Panel and chiller modules requires a simple two-conductor 18 AWG shielded cable rated at 60°C minimum, daisy chain connection. Control wiring cannot be installed in the same conduit as line voltage wiring or with wires that switch highly inductive loads such as contactor and relay coils. Refer to the Power Distribution Drawing on page 47 of this manual for more information. All wiring shall be in compliance with all local and national codes. Electrical Phase Sequencing Proper clockwise rotation for scroll compressor motors is important to prevent damage to the compressors. ClimaCool recommends the use of a phase sequence indicating instrument following the manufactures directions. An alternative is to “bump test” the compressors one at a time with pressure gauges attached to the high and low gauge ports of the compressors to check for proper rotation. Energize the compressor for a few seconds to ensure the discharge pressure gauge increases significantly. If the discharge pressure does not increase, proper rotation is reversed. Compressor rotation can be reversed by opening the main electrical disconnect and switching any two of the main power supply leads feeding that compressor’s contactor. Proper Voltage Balance Occasionally, in three phase circuits, a voltage imbalance occurs between phases. It is not recommended to operate equipment when an imbalance greater that 2% occurs. This causes motors to run at high temperatures and may affect their longevity. The following example describes how to calculate the average voltage of the three phases to see if the imbalance is greater than 2%. Example: Line 1 = 226v Line 2 = 230v Line 3 = 228v The average is: (226+230+228) / 3 = 228v Next, [100(228-226)] / 228 = 0.9% The voltage imbalance of the three phase circuit is 0.9%. This is well under the 2% range. Voltage/Phase Monitor Voltage/phase monitors are factory supplied for field installation with the CoolLogic Master Control Panel. The voltage/phase monitor helps guard the chiller bank against voltage fluctuations, phase failure or phase reversal conditions which could void your warranty. The voltage/ phase monitor has three wires that connect to the main three phase power chiller bank input. Two low voltage control wires are connected to the CoolLogic Master Control Panel. Do not install control wiring in the same conduit as line voltage wiring or with wires that switch highly inductive loads such as contactor and relay coils. Note: It is mandatory to install one (1) monitor per bank at main power distribution panel to monitor voltage and phasing of power to the modules. See Wiring Diagram on page 13. Electrical Connection CAUTION/ATTENTION Use only copper conductors for field installed wiring. Unit terminals are not designed to accept other types of conductors. Utilisez uniquement des conducteurs en cuivre pour le câblage. Bornes de l’unité ne sont pas conçus pour accepter d’autres types de conducteurs. If this unit uses a 3 Phase Scroll Compressor, the following instructions MUST BE followed: • Unit power supply MUST BE wired in the proper sequence to avoid damage to the 3 Phase Scroll Compressor; • Scroll Compressors with INCORRECT rotation show the following characteristics: - High sound level; - High suction pressure and low discharge pressure; - Low current draw. • If any of the three above characteristics exist, swap two of the three supply wires at the disconnect and recheck compressor for incorrect rotation. Si cet appareil utilise compresseur scroll 3-Phase, les instructions suivantes doivent être suivies: • L’alimentation de l’appareil doit être monté dans l’ordre correct pour éviter endommager le compresseur scroll 3-Phase • Compresseurs scroll avec rotation incorrecte montrent les caractéristiques suivantes: - Haut niveau de son; - Pression d’aspiration élevée et une faible pression de décharge; - Faible ampérage • Si l’un des trois éléments mentionnés ci-dessus sont remplies , échanger deux des trois lignes électriques alimen tant la interrupteur de sécurité et vérifier la rotation du compresseur. 3 PHASE SCROLL COMPRESSOR UNITS UNITÉ DE COMPRESSEUR SCROLL 3-PHASE CAUTION/ATTENTION Disconnect power supply (ies) before servicing. Refer servicing to qualified service personnel. Electric shock hazard. May result in injury or death! Unit to be serviced by qualified personnel only. Refrigerant system under pressure. Relieve pressure before using torch. Recover refrigerant and store or dispose of properly. Debrancher avant d’entre- prendre le dépannage de l’appareil. Consulter un réparateur qualifie pour le dépannage. Risque de choc électrique. Résiltat de mai dans dommages ou la mort! Conifer la maintenance à un technicien qualifie. Le systéme frigorifique sous pression. Décomprimer avant d’exposer à la flamme. Récuperer le frigorigene et le stocker ou le détrulre correctement. WARNING/AVERTISSEMENT CAUTION/ATTENTION

be clean. The pipe work installer must remove weld scale, rust and contamination during pipe work fabrication. The system water piping must be flushed thoroughly with recommended alkaline flush or other chemicals that are compatible with 316 stainless steel, prior to making connections to the ClimaCool chiller. There are certain necessary components that should always be installed in both the chilled water and condenser water systems. (See Water Piping Configuration Figures 19 and 20 on page 16). Piping configurations on multiple modules may also be found on pages 15. All water piping must be installed in accordance with applicable codes and standards. Temperature Sensor and Wells ClimaCool provides four (4) temperature sensors and wells with each chiller system programmed by the CoolLogic Control System. They must be field installed a minimum of 36” but no more than 60” away from the bank and before the strainer, on the chilled water inlet, chilled water outlet, condenser water inlet and condeser water outlet. (See Water Piping Configuration on page 16). Note: Sensors must be fully inserted into the well to obtain proper readings and must be 2 ½ pipe diameter minimum before or after an elbow. See Figures 14 and 15. Chiller/Heater System Water Header Bypass A bypass is required for any chilled water/evaporator, hot water/condenser (heating load) and source water side (geothermal, cooling tower or closed circuit cooler) with variable pumping. The bypass must be piped in such a way that the temperature and differential pressure sensors are still sensing active flow (See Water Piping Configuration Water Piping Pressure Differential Flow Sensor It is imperative that minimum and maximum water flow rates, as defined in the Operational Limitations tables on page 31, are not exceeded. To prevent operation of the chiller without sufficient water flow to the evaporator and condenser, it is required to install pressure differential flow sensors in both the chilled and condenser water circuits. Place one (1) on each side, downstream of the strainers on the inlet and outlet of a straight pipe, as close to the module as possible. Do not put in an elbow on the outlet. (See Water Piping Configurations on page 16). Note: Evaporator and condenser sides both require sensors of equal pressure ranges. Pressure Taps The installing contractor must provide access ports for connecting both the pressure differential flow sensors and pressure gauges for both the condenser and chilled water systems. A ¼” pressure tap is required on the inlet and the outlet of both water systems for a total of eight (8) taps. If a port is shared by the pressure differential flow sensor and the pressure gauge, it will require four (4) ½” taps. (See Water Piping Configurations on page 16). Water Isolation Valves It is recommended to provide bank water isolation valves for proper isolation and maintenance of the chiller, pump and strainer (See Water Piping Configurations on page 16). Strainers – Minimum 60 Mesh Screen Required ClimaCool chillers utilize brazed plate heat exchangers which are extremely sensitive to debris. Therefore, it is mandatory that all condenser and chilled water systems include a strainer with a minimum of 60 mesh screen for proper filtration. The strainers must be installed as shown in the Water Piping Configurations on page 16 and be in place at all times when the chiller(s) is/are in operation. ClimaCool’s warranty does not cover and does not apply to products which have defects or damages due to freezing of the water supply, an inadequate or interrupted water supply, corrosives or abrasives in the water supply, or improper or inadequate filtration or treatment of the water supply. Figure 14 - Temperature Sensors Figure 15 - Flow Sensors (DPT)

heater system bypass is to prevent deadheading of the pumps when all of the internal unit valves go closed as well as allow temperature and differential pressure sensors to sense active flow. The bypass should be sized for an absolute minimum of one module’s worth of design flow. Please refer to selection submittals for design flow rates. Modules can be designated for fixed bypass for heating, cooling and source flow, however, this limits the number of modules remaining for that duty. Also, with a module acting as a bypass increased wear of heat exchangers may be caused by abrasion from bypass flow. ClimaCool offers two types of water header bypass kits, direct return (Figure 16) and reverse return (Figure 17). The bypass kits must be installed on each water source loop and controls are integrated with the CoolLogic software. Installation location can be found on page 16 – Water Piping Configuration. This bypass can also be created with field supplied piping. The design piping must accommodate one module’s worth of design flow, and be positioned so that the temperature and differential flow sensors sense active flow in the bypass mode. (See Figures 19 and 20 on page 16 - Water Piping Configuration). The field supplied piped chiller/ heater system bypass must be controlled by others. There are system communication delays, polling and network conflicts that strictly prohibit the use of ClimaCool sensors and controls for control of field supplied bypasses or other field supplied items. Recommended method is to control via differential pressure or gpm flow meters across the chilled water/evaporator, hot water/condenser water systems. LOAD 1 FROM CHILLER BANK TYPICAL LOAD BYPASS VALVE ARRANGEMENT TO CHILLER BANK LOAD 2 LOAD 3 LOAD X TYPICAL CHILLED AND HOT WATER LOAD SIDE BYPASS VALVES SIZE EQUIVALENT TO ONE MODULE WORTH OF FLOW Figure 18 - Typical Load Bypass Valve Arrangement HEADER BYPASS REVERSE RETURN No.10 2" 90° No.50 Reducer 6 x 2 Module Header No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 Module Header SIDE VIEW 6" Grooved Coupling 6" Grooved Coupling 2" Grooved Coupling Hose Kit 2" Grooved Coupling 2" Belimo Ball Valve & Actuator No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 END VIEW No.10 2" 90° Elbow No.50 Reducer 6 x 2 Hose Kit 2" Belimo Ball Valve & Actuator 2" Grooved Coupling HEADER BYPASS REVERSE RETURN No.10 2" 90° No.50 Reducer 6 x 2 Module Header No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 Module Header SIDE VIEW 6" Grooved Coupling 6" Grooved Coupling 2" Grooved Coupling Hose Kit 2" Grooved Coupling 2" Belimo Ball Valve & Actuator No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 END VIEW No.10 2" 90° Elbow No.50 Reducer 6 x 2 Hose Kit 2" Belimo Ball Valve & Actuator 2" Grooved Coupling Figure 17 - Reverse Return No. 25 Grooved Branch 6 x 6 x 2 Module Header 6" Grooved Coupling HEADER BYPASS DIRECT RETURN & SIMULTANEOUS HTG & CLG No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 Module Header 6" Grooved Coupling SIDE VIEW No. 25 Grooved Branch 6 x 6 x 2 No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 END VIEW Hose Kit 2" Belimo Ball Valve & Actuator 2" Grooved Coupling 2" Belimo Ball Valve & Actuator Hose Kit 2" Grooved Coupling No. 25 Grooved Branch 6 x 6 x 2 Module Header 6" Grooved Coupling No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 Module Header 6" Grooved Coupling SIDE VIEW No. 25 Grooved Branch 6 x 6 x 2 No. 29 Reducing Tee w/Thd. Branch 6 x 6 x 2 END VIEW Hose Kit 2" Belimo Ball Valve & Actuator 2" Grooved Coupling 2" Belimo Ball Valve & Actuator Hose Kit 2" Grooved Coupling Figure 16 - Direct Return Water Piping TYPICAL CHILLED AND HOT WATER LOAD SIDE BYPASS VALVES SIZE EQUIVALENT TO ONE MODULE WORTH OF FLOW Load Side System Bypass (Air Handlers, Fan Coils, etc.) A load system bypass is required for preventing pump deadheading, allowing active flow system sensing and preventing starving flow from the chiller/heater system. Examples of an acceptable load side system bypass are: • Utilize a quantity of 3-way control valves on the largest loads farthest from the chiller/heater system. • Field piping with a control valve to provide a bypass across the larger system loads when their 2-way valves go closed. Please refer to Figure 18 for a typical load bypass valve arrangement. The load side system bypass should be sized for an absolute minimum of one module’s worth of design flow. (Please refer to selection submittals for design flow rates). A minimum of (6) six gallons per nominal system ton are also required to maintain proper system thermal inertia. This is to avoid short cycling of compressors in the chiller/heater system as well as prevent nuisance alarms.

Notes: 1. Figures 19 and 20 are required piping for proper water regulation and distribution through ClimaCool modular chillers. 2. Module order and incoming/outgoing water flow as shown in both Figure 19 and 20 can be set up as either a left-to-right or right-to-left configuration. 3. Condenser hydronic circuit shown. Piping configurations are similar for the chilled water hydronic circuit. 4. For condenser/heating and chilled water (evaporator) inlet/outlet location dimensions, refer to page 4 - Dimension Data. 5. A pressure differential flow sensor is a required safety device for ClimaCool modular chillers on the chilled and condenser/heating water circuits. 6. A strainer with a minimum of 60 mesh stainless steel screen is a required safety to protect the brazed plate heat exchangers on both chilled and condenser/heating water sides of the system. 7. Maximum water flow rates for both evaporator and condenser/heating water header systems for 30, 50 and 70 ton modules in one bank is 1,000 gpm. 8. Maximum water flow rates for both evaporator and condenser/heating water header systems for 85 ton modules in one bank is 2,400 gpm. 9. Bypass is mandatory for systems utilizing motorized valves. 10. Header bypass valve may be installed at either end of bank. 11. For over seven (7) modules, please consult the factory. Figure 19 - Field Piping Direct Return Figure 20 - Field Piping Reverse Return

2 - Chilled Water Circuit Figures 1 and 2 depict hydronic piping in each ClimaCool chiller module. Heat Exchanger Refrigerant Circuit #1 Refrigerant Circuit #2 Service Port (3/4”) Pete’s Port Pete’s Port Service Port (3/4”) From Cooling Tower To Cooling Tower Header Header Isolation Ball Valve (2, 2-1/2 or 3”) Isolation Ball Valve (2, 2-1/2 or 3”) Heat Exchanger Refrigerant Circuit #1 Refrigerant Circuit #2 Service Port (3/4”) Pete’s Port Service Port (3/4”) Chilled Water Outlet Chilled Water Inlet Sensor Well (internal) Cap Tube to Low Limit Protection Thermostat Header Header Isolation Ball Valve (2, 2-1/2 or 3”) Isolation Ball Valve (2, 2-1/2 or 3”) Pete’s Port 2 - Chilled Water Circuit Figures 1 and 2 depict hydronic piping in each ClimaCool chiller module. Heat Exchanger Refrigerant Circuit #1 Refrigerant Circuit #2 Service Port (3/4”) Pete’s Port Pete’s Port Service Port (3/4”) From Cooling Tower To Cooling Tower Header Header Isolation Ball Valve (2, 2-1/2 or 3”) Isolation Ball Valve (2, 2-1/2 or 3”) Heat Exchanger Refrigerant Circuit #1 Refrigerant Circuit #2 Service Port (3/4”) Pete’s Port Service Port (3/4”) Chilled Water Outlet Chilled Water Inlet Sensor Well (internal) Cap Tube to Low Limit Protection Thermostat Header Header Isolation Ball Valve (2, 2-1/2 or 3”) Isolation Ball Valve (2, 2-1/2 or 3”) Pete’s Port Note: Figure 21 and 22 depict hydronic piping in each ClimaCool chiller module and are shown with water isolation valves. Figure 21- Condenser Hydronic Circuit Figure 22 - Chilled Water Circuit

debris prior to initial operation. See Water Treatment for a comprehensive list of precautions on page 20. Filling, Purging and Leak Testing the System After the water systems have been properly installed, visually inspect all joints for tightness. If the chiller is to be installed in an existing system, the cleanliness of the existing system can be judged from the operating conditions of the present machines. The cooling tower in particular, should be inspected and cleaned, if required. It is good practice to flush and, ideally, to acid wash the existing system before connecting a new chiller. The following method is recommended to fill and leak check the water system for modules WITH Water Isolation Valves: 1. Close all water isolation valves inside each module which isolate the individual heat exchangers. 2. Ensure that all drain valves are closed and that all water main isolation valves are opened. 3. The system should be filled with clean water sent through the strainers and the system checked for leaks. 4. Once the main water lines and the chiller headers are filled with clean water, purge and repeat the filling process at least three times. 5. All modules are equipped with ¾” fill and flush valves with lines teed into the inlet and outlet connections into and out of each heat exchanger. Ensure these ¾” valves are CLOSED. 6. Open the water isolation valves inside each modular chiller and repeat the filling process, this time also checking for leaks inside each module. 7. Following the final filling and leak checking procedure, air should be purged from the system. The following system is recommended to fill and leak check the water system for modules WITHOUT Water Isolation Valves: 1. Ensure that all drain valves are closed. 2. All modules are equipped with ¾” fill and flush valves with lines teed into the inlet and outlet connections into and out of each heat exchanger. Ensure these ¾” valves are CLOSED. 3. The system should be filled with clean water sent through the strainers and the system checked for leaks. 4. Once the main water lines and the chiller headers are filled with clean water, purge and repeat the filling process at least three times. 5. Following the final filling and leak checking procedure, air should be purged from the system. Cleaning the System The following method is recommended to properly clean the water systems: 1. Before cleaning the system, install a temporary bypass line between the main supply and return water headers of both chilled and condenser water systems when possible. Open the main header bypass lines to divert the initial water flow around the module heat exchangers until you are confident the circulating water is mostly pure. 2. Provided main header bypass lines are installed, close all water isolation valves inside all modular chillers equipped with manual or automatic water isolation valves. If the modules are NOT equipped with water isolation valves, we recommend installing 3-way main header bypass valves so the initial water flow bypasses all module heat exchangers. 3. It is mandatory to run the pumps with the strainers in place (see Starting the Pumps section below for proper pump startup). All external hydronic branches should be open to all devices in the system. 4. Pressure drop across the strainer must be observed and as pressure change reaches 50% of the initial read, strainers must be isolated and cleaned. 5. Open all water isolation valves inside each module equipped with manual or automatic water isolation valves (see step 6 for modules NOT equipped with water valves). If bypass lines are not installed (described in step 1) it is recommended to drain out the initial fill of water to help flush out debris. Close off the main header bypass lines referred to in step 1 and open the flow to the main water headers. Repeat steps 3 and 4 until there is no more debris being collected by the strainers. 6. If bypass lines are not installed (described in step 1) and the modules are NOT equipped with water isolation valves, it is recommended to drain out the initial fill of water to help flush out debris. Remove and clean the strainers before refilling and purging the system again. Repeat steps 3 and 4 until there is no more debris being collected by the strainers. Starting the Pumps Follow the manufacturer’s recommendations when starting the pumps for the first time. The system should be checked for leaks and air purged with the pumps in operation. The pressure drop across the heat exchangers will give a good indication of flow through the system (See Condenser and Evaporator Water Pressure Drop Charts on page 22). This should be immediately checked against the expected pressure drop for the flow rate required. If the pressure drop begins to fall and the flow rate is falling, this could indicate the need to clean the strainers. Filling the Water System

care and maintenance of the modular chiller system. Proper water treatment is a specialized industry and it is recommended to consult an expert in this field to analyze the water for compliance with the water quality parameters listed in Table 1. The materials exposed to the water are type 316 stainless steel, pure copper and carbon steel. Other materials may exist external to the ClimaCool chiller. It is the user’s responsibility to ensure these materials are compatible with the treated water. Regular treatment of the water will increase longevity of your system. Failure to provide adequate filtration or treatment of evaporator and condenser water will void the ClimaCool module’s warranty. Heavy-Contaminated Water In such instances whereby the particulates in the water are excessive, it is recommended to install an intermediate plate and frame heat exchanger to isolate the ClimaCool chiller from the building water system. Cooling Tower The cooling tower should be located away from sources of external contaminates such as trees, dust or grass cuttings. Insect infiltration can be reduced by eliminating lights near the tower. A periodic visual inspection of the tower system should be made and contaminates removed as required. WATER CONTAINING CONCENTRATION Ammonia Less than 2.0 mg/l CaCO3 Alkalinity 30 - 500 mg/l CaCO3 Hardness 30 - 500 mg/l Chlorides Less than 200 mg/l Dissolved Solids Less than 1000 mg/l Iron Less than 5.0 mg/l Manganese Less than 0.4 mg/l Nitrate Less than 100 mg/l pH 7.0 - 9.0 Sulphate Less Than 200 mg/l Table 1 - Water Quality Parameters Water Treatment CAUTION/ATTENTION Excessive Chlorine, undissolved solids and other improper water conditions WILL DAMAGE the internal heat exchanger & WILL VOID YOUR WARRANTY! Chlore excessive, solides non dissous et les autres impropre conditions de l’eau, ENDOMMAGERA l’échangeur de chaleur interne et ANNULERA VOTRE GARANTIE!

Modules are designed for a leaving water temperature range from 40°F to 62°F. All cataloged modules can operate safely in this range without the need of special controls or glycol additives. Leaving water temperatures below 40°F can result in evaporator suction temperatures below the freezing point of water. Therefore, a glycol solution additive is required that will protect the evaporator from freeze ups at lower operating suction temperatures. The full range of leaving chiller fluid using glycol is 20°F to 62°F. Condenser Water Temperature The condensers are designed to operate most efficiently at lower entering water temperatures for lower power consumption. The expansion valve, however, relies on the pressure difference across the valve to drive the liquid refrigerant through. It is necessary to maintain a minimum pressure differential across the thermal expansion valve (equivalent to a 30°F difference between saturated liquid temperature in the condenser and saturated vapor temperature in the evaporator) to avoid loss of efficiency and system performance. This pressure differential is most commonly ensured by cycling the fans on the cooling tower to maintain the entering condenser water temperature above the minimum temperature of 60°F. An alternate method to maintain the minimum entering condenser water temperature above 60°F is to employ a bypass arrangement as shown in Figure 24 below. This valve is an automatic 3-way bypass valve, which senses the temperature of the mixed water entering the condenser. If this mixed water temperature falls below 60°F the valve will re-circulate the leaving condenser water and mix it into the entering condenser water stream (bypassing the cooling tower). The full range of entering condenser water is 60°F to 95°F for standard applications and maximum leaving hot water temperature of 135°F for high temperature applications. For entering water less than 60°F refer to Motorized Water Isolation Valves under Options and Accessories on page 41. Figure 24 - Condenser Water System Note: Only required for equipment without motorized condenser valves. Pressure Taps Thermometer Wells Isolation Valves Condenser Water Flow Sensor or Switch Pressure Relief Valve Flow to Tower Load Flow from Tower Cooling Tower Bypass Valve Strainer Isolation Valve Pump Backflow Preventer Strainer Drain Valve Backflow Preventer Pressure Relief Valve Water Temperature Requirements

100 Condenser Water Pressure Drop 30, 50, 70 & 85-Ton, UCW/UCH Series Model# UCW/UCH030 Model# UCW/UCH050 Model# UCW/UCH070 Model# UCW/UCH085 43 3 100 t. of Water) 35 60 80 40 50 30 25 20 16 18 45 15.5 26.0 34.7 17.3 21.7 13 10.8 8.7 19.5 7.0 7.8 Drop (PSI) 43.3 Pressure Drop (Ft 14 10 8 6 4 12 6.1 4.3 3.5 5.2 2.6 1.7 Pressure 1 10 1000 Flow (GPM) 100 120 140 160 180 200 220 240 400 500 80 60 40 30 2 0.87 0.43 260 300 280 350 100 Evaporator Water Pressure Drop 30, 50, 70 & 85-Ton, UCW/UCH Series Model# UCW/UCH030 Model# UCW/UCH050 Model# UCW/UCH070 Model# UCW/UCH085 80 34.7 43.3 (Ft. of Water) 35 60 40 50 30 25 14 10 20 45 16 18 12 15.5 26.0 17.3 21.7 13 10.8 6.1 4 3 8.7 19.5 7.0 7.8 5.2 sure Drop (PSI) Pressure Drop 10 8 6 4 2 4.3 3.5 2.6 1.7 0.87 Press 1 10 1000 Flow (GPM) 100 120 140 160 180 200 220 300 400 500 80 60 40 30 0.43 240 260 280

Note: Correction factors shown above are to be applied to Std. Product Data @ ARI 550/590 44°F. Leaving Chilled Water / 85°F Entering / 95°F Leaving Conditioned Water. Note: Correction factors shown above are to be applied to Std. Product Data chiller pressure drop curves for straight water. Note: Correction factors shown above are to be applied to Std. Product Data @ ARI 550/590 44°F. Leaving Chilled Water / 85°F Entering / 95°F Leaving Conditioned Water. Note: Correction factors shown above are to be applied to Std. Product Data chiller pressure drop curves for straight water.

Glycol Solution Freezing Point Table 2 - Performance Adjustment Factors vs. Altitude vs. Chiller Temperature Drop Chiller Water Temp. °F Capacity Mul5plier Flow
gpm Mul5plier kW
Power Mul5plier Capacity Mul5plier Flow
gpm Mul5plier kW
Power Mul5plier Capacity Mul5plier Flow
gpm Mul5plier kW
Power Mul5plier Capacity Mul5plier Flow
gpm Mul5plier kW
Power Mul5plier 8 0.995 1.246 0.998 0.990 1.244 1.003 0.986 1.238 1.006 0.980 1.232 1.012 10 1.000 1.000 1.000 0.993 0.997 1.004 0.989 0.990 1.007 0.983 0.996 1.014 12 1.005 0.834 1.001 0.996 0.831 1.004 0.992 0.826 1.008 0.986 0.821 1.016 14 1.010 0.716 1.001 0.998 0.714 1.005 0.994 0.709 1.009 0.989 0.704 1.018 Sea
Level 2000
H. 4000
H. 6000
H.

trained personnel. Prior to chiller startup, there are certain essential checks which must be completed. Failure to carry out these checks could result in damage to the chiller voiding the modules warranty. Electrical It is imperative to turn off the main electrical power supply and follow proper lock-out/tag-out procedures prior to servicing any of the chiller’s electrical components. The following procedures can be performed only after the electrical power is confirmed to be off: 1. The installation must be inspected and approved by the respective agent and be in compliance with all local and national electrical codes. 2. Check and tighten all electrical terminal connections on each module as required. Utilize any lock-out/tag- out procedures required for your project location when performing this operation. If no procedure exists, take all precautions necessary to prevent the power from being turned on. A systematic tightening of all terminals inside the electrical control panel on each module should be carried out. This will include the compressor motor terminals, which would require removal of the compressor terminal cover. Check connections at each safety and every termination in the panel. 3. Verify that a separate 115 volt power supply is used to power the CoolLogic Control System. Field connections are simplified requiring only a two conductor shielded cable daisy chain from the Master Control Panel to the modules. These control wires should be two-conductor shielded having #18 AWG minimum up to 50 feet, #16 AWG minimum up to 100 feet, rated at 60°C minimum. All field wiring must be identified (tagged). Refer to Power Distribution Drawing on page 53. 4. All field connections should be checked for tightness. 5. Check all fuses for proper sizing as indicated on the chiller data plate and/or the electrical diagram on the inside door of the electrical panel. 6. Verify proper operation of the mandatory field installed pressure differential flow sensor or switch. 7. On 208/230v units, confirm tranformers are properly tapped for the measured incoming power supply. 8. Verify proper installation of the mandatory factory provided, field installed voltage/phase monitor. Refrigeration 1. Refrigerant piping and components should be inspected for damage. 2. Place refrigerant gauges on the discharge and suction access ports of each refrigerant circuit to ensure a refrigerant charge is present. Leave the gauges on for compressor rotation check. 3. Confirm the settings on all pressure sensors. Water System 1. Confirm that leak testing has been carried out. 2. Confirm that the system is clean. 3. Confirm that necessary water treatment systems are in place with both the evaporator and condenser water systems. 4. Confirm that both the chilled water and condenser water circulating pumps are operational and water is flowing through both exchangers. 5. Shut the entering water valve and blow out some water to check for particles or coloration from suspended particles. Record the pressure differential across the chiller and condenser heat exchangers, measured at the pete’s ports at each module. 6. Confirm correct water flow rates through the condenser and evaporator. Acquire the design parameters for the chiller bank from the ClimaCool Selection Program data (available from the local representative). Compare the measured differential pressures from step 5 above with the predicted flow rates to ensure proper correlation to the flow results. 7. Verify proper installation of the mandatory factory provided, field installed temperature sensors and wells (sensor should be fully inserted in the well) and verify calibration of sensors read through the CoolLogic Control System. 8. Confirm installation of mandatory field installed condenser and chilled water strainers with a minimum of 60 mesh screens. Pre-Startup Disconnect power supply (ies) before servicing. Refer servicing to qualified service personnel. Electric shock hazard. May result in injury or death! Unit to be serviced by qualified personnel only. Refrigerant system under pressure. Relieve pressure before using torch. Recover refrigerant and store or dispose of properly. Debrancher avant d’entre- prendre le dépannage de l’appareil. Consulter un réparateur qualifie pour le dépannage. Risque de choc électrique. Résiltat de mai dans dommages ou la mort! Conifer la maintenance à un technicien qualifie. Le systéme frigorifique sous pression. Décomprimer avant d’exposer à la flamme. Récuperer le frigorigene et le stocker ou le détrulre correctement. WARNING/AVERTISSEMENT CAUTION/ATTENTION CAUTION/ATTENTION Use only copper conductors for field installed wiring. Unit terminals are not designed to accept other types of conductors. Utilisez uniquement des conducteurs en cuivre pour le câblage. Bornes de l’unité ne sont pas conçus pour accepter d’autres types de conducteurs.

(Installation, Operation & Maintenance (IOM) Manual is available at www.climacoolcorp.com) 2. Is there a minimum of 60 mesh strainer on condenser and evaporator inlet water? (Fill water to chiller being sure to pass through a minimum of 60 mesh strainer.) 3. Is condenser water system filled and flushed? (See “Filling the Water System” in ClimaCool IOM.) 4. Is Chilled water system filled, flushed and all air purged from system? (All air must be purged from system prior to startup. See “Filling the Water System” in ClimaCool IOM.) 5. Are all pumps tested and operational? 6. Are required GPM’s (verified by pressure differential) supplied to the Chilled water side? (See project specifications or selection and performance sheets available from ClimaCool Sales Rep.) 7. Are required GPM’s/Pressure differential being supplied to the Condenser? (See project specifications or selection and performance sheets available from ClimaCool Sales Rep.) 8. Are the pressure differential flow sensors properly installed and wired to the CoolLogic controller? 9. Have all chiller coupling connections been leak tested? 10. Is water presently circulating through chiller? 11. Verified that temperature sensors and voltage/phase monitor have been installed? 12. Verified power supply agrees with chiller nameplate? 13. Is power and communication wiring complete to each module? 14. Verified that wiring and devices meet with approved electrical submittal drawings? 15. Is required load available to run multiple compressors at startup? 16. Is control functional to maintain condenser water temperature? (This includes maintaining “minimum” inlet temperature. See “Operational Limitations” in IOM.) 17. Is water header bypass installed at the chiller? ClimaCool Provided? Field Provided? (Check one) If you checked “No” to any question above, provide the line reference number and the date of scheduled completion below. Please note all conditions must be complete prior to the startup date. *This form must be completed and submitted to ClimaCool Corp. a minimum of three (3) weeks prior to final scheduling of any startup. Note: If any of the above items are not complete at time of startup, back charges will be assessed for additional costs. Contractor Name: Address: (Authorized Signature) Phone: Date: Pre Startup Checklist* (Water-Cooled) UCW/H E-mail [email protected] Fax 405.815.3052 Doc: PreStartUp R-410A WaterCooled UCW/H SD #0011 Rev. 03.25.14 1

trained personnel. 1. Review all items are complete from the Pre-Startup Check List. 2. Cross reference model number with submittal sheet to verify that the units are the correct model type and voltage requirements. 3. Verify the location and wiring connections of all main header temperature sensors (should be a minimum of 36” but no more than 60” from the bank). Confirm that all sensors are FULLY INSERTED into their sensor wells and wired back to the correct terminals in the Master Control Panel. 4. Verify the location and ports for all water differential pressure sensors used for flow detection ((+) port piped to the inlet headers and the (-) ports piped to the outlet headers). • Verify the correct wiring using the +5VDC power supply to the differential sensor inputs. • Verify the correct output wiring from the differential sensors back to the master controller universal input (UI) channels 8 and 11. Confirm inputs 8 & 11 jumpers are sset for ‘volts’. Note: The differential sensor ports should NOT be piped to a location which includes strainer pressure drops. 5. Verify that all header inlets (condenser and evaporator) include strainer assemblies equipped with 60 mesh screens. 6. Inspect all refrigerant piping for oil leaks which may have occurred during shipment which might indicate a refrigerant leak. Check the high pressure cutout setting of the pressure controls. The setting should be 385 psig cutout for all UCW models, and 585 psig for all UCH models. 7. Verify the location and settings of the phase loss monitor. It should be in a location to sense the voltage condition in the main, high voltage panel which feeds high voltage to each module independently. (Review Electrical Connection of IO&M on page 10). Verify the low voltage output wiring from the phase loss monitor (terminals 4 and 5) back to the main CoolLogic controller, input channel 12. 8. Determine if the chiller modules are equipped with motorized water isolation valves. If so, verify the settings of the motorized valves auxiliary switch dial settings, to ensure they close near: • 15% for source valve (condenser) and for load side (evaporator or heat) 9. Confirm that the main water pumps are driven by VFD’s, and that all VFD’s are controlling the pump speeds to produce a nominal differential pressure drop across the chiller bank headers, measured precisely at the differential pressure sensor locations in step 4 above. Nominal differential pressure ranges are from 3 to 10 psid. 10. Confirm the jumper locations for all master controller and module controllers as shown on the wiring diagrams provided on the inside electrical door panels. • Set the rotary switches for the MAC Address of the master controller to be “01.” • Set the rotary switches for the module controllers to be “02” for module #1, “03” for module #2, and so on. 11. Tighten every screw and lug connection inside the CoolLogic master control panel and inside each module control panel high voltage section. Check auxiliary contacts on contactors ensure #1 auxiliary is wired on the #1 contactor. Open up the compressor junction box located on the front of each compressor and verify main electrical terminal lug tightness and the low voltage wires on protection module. 12. Verify the communication cable wiring to ensure it is 18 AWG, simple two conductor shielded cable and that the wiring is alone inside solid conduit between the master control panel and the first module control panel. Verify the cable’s outer jacket is not stripped more than one inch. If so, the wires may have become untwisted, causing signal reflections. Confirm the wires are connected correctly to the terminal blocks at the master and each module as follows: Black wire to Net- White wire to Net + Shield wire to Shield Verify that the shield part of the wires continues the daisy chain connection through to the last module but, that this shield is NOT connected to a terminal lug inside any module. 13. Power-up the master control panel and download the appropriate clipping file into the master controller, following instructions. 14. Power up each module control panel, turn OFF the two toggle switches located on the inside bottom of the low voltage side of the module electrical panel. Download the appropriate clipping file into the module controllers, following instructions. 15. Check for proper line or high voltage values at each module input power block, and the 24 VAC low voltage values for correctness (+/- 10% of nominal values). 16. On 208/230V units, confirm transformer(s) are properly tapped for the measured incoming power supply. 17. Use refrigerant gauge set suitable for the high pressure R-410A, and hook up to the suction and discharge ports of each module’s compressor stages separately. Bump start the compressors either by depressing the contactor manually, or by using the manual run commands from the Master Control Panel, (found in the FN 7, or the service menu). Bump the compressor only for 1-2 seconds to ensure the correct rotation of the scroll compressors (indicated by a rising highside pressure and a falling suction pressure). Startup

to the master controller using the “STATUS” menu, then indexing down to the desired compressor data screen. • If the compressor data parameters all read “0,” then communications are not yet established, and communications cable troubleshooting is required. • When all compressor data parameters read actual values which agree with the refrigerant gauge set and refrigerant line temperatures, then it is safe to assume that communications are established. 19. Set up the master controller parameters according to the specific job submittal sheets. • All parameters can be found in the FN 2 menu (setup), FN 6 menu (module factory settings), FN 7 menu (service), FN 8 menu (master factory settings). •It is imperative to access EVERY MENU and EVERY PARAMETER to ensure all settings are appropriate. 20. Set up the Building Automation System (BAS) interface parameters (as required) using the FN 0 menu (network number selection, IP addressing), FN 4 menu (device instances). Adjusting Unit Charge and Thermal Expansion Valves Using Subcooling and Superheat Method Due to varying installation conditions/applications and to optimize performance, proper refrigerant charge and thermal expansion valve (TXV) adjustment must be confirmed. After checking compressor rotation, choose a circuit to be tested first. Connect test equipment to monitor the suction line and liquid line temperatures simultaneously. Place a manifold gauge set on the suction line and liquid line then start the compressor. As long as the suction pressure is high enough to prevent the low pressure switch from tripping, run the compressor for five minutes. Verify proper subcooling. This is accomplished by subtracting the liquid line temperature from the saturated condensing temperature. The saturated condensing temperature is found by converting the liquid line pressure reading on the manifold gauge to the related temperature. The normal subcooling temperature range at the condenser is 5-15°F, BUT for total accuracy please follow the charge recommendations found in the selection program. If subcooling is too low, then refrigerant must be added to the system. Add charge and wait five minutes before checking results. If subcooling is too high, then refrigerant must be removed from the system. Verify proper superheat by subtracting the saturated evaporative temperature from the suction line temperature. The saturated evaporative temperature is found by converting the suction pressure reading on the manifold gauge to the related temperature. The proper superheat temperature range is 6-18°F at normal operating conditions (typically 44oF leaving chilled water temperature). If superheat is low, this may indicate that the expansion valve is overfeeding. To adjust the expansion valves, turn the adjustment stem clockwise. This will cause the superheat to rise. Wait five minutes before checking the results of this adjustment. Repeat until the desired superheat is achieved. Once adjusted, also check the discharge gas superheat (DGSH) to confirm reading is not less than 50°F and the discharge line temperature is not more that 220°F. To check discharge gas superheat, first obtain the saturated condensing temperature by converting the discharge pressure to saturated refrigerant temperature using a pressure temperature chart. Next, measure the discharge line temperature 6 to 10 inches from the compressor. Subtract the saturated condensing temperature from the discharge line temperature to find the discharge gas superheat. If the DGSH is below 50°F, liquid refrigerant is still present in the suction gas vapor returning to the compressor. The TXV will require additional clockwise adjustment to raise the discharge gas superheat into the acceptable range. Startup

Is Superheat in Range? Yes No Is Subcooling in Range? Yes No Is Superheat Low or High? High Low Turn TXV Adjustment Stem Clockwise Is Subcooling Low or High? High Low Add Refrigerant Is Subcooling Low or High? High Low Recheck Superheat and Complete Start-up and Warranty Form Add Refrigerant Remove Refrigerant Turn TXV Adjustment Stem Counter Clockwise Water Testing Extract three water samples from each water loop, Hot Water/Condenser, Chilled Water/Evaporator using the bottles provided (three (3) bags; each bag containing three (3) bottles) from the Water Sample test kit. Confirm that Startup Documentation All startup paperwork and documentation must be submitted to ClimaCool. Future warranty claims cannot be processed without a completed Startup and Warranty Registration form on file (See page 30). Note: Electronic version of the Startup forms available on www.climacoolcorp.com on the Service page. Caution: Do not charge to achieve subcooling temperature when the expansion valve is overfeeding. If the expansion valve is overfeeding, readings may still indicate low subcooling and low superheat, but circuit may not be undercharged. Subcooling & Superheat Flow Chart the sample bottles are filled to the top leaving no air in the bottles. All the sample bottles must have labels completed per instructions included with the bottles. Ship the bottles immediately to the appropriate water testing laboratory per the instructions.

Chiller No.: Serial No. 2: Evaporator: / ∆ P Evaporator: Yes N/A Condenser: / ∆ P Condenser: Yes N/A "Flow devices" shut off chiller below 40% of flow for Evaporator and 25% for Condenser: Yes ► All wiring terminations in module panel, safeties and compressors tightened: Yes No Yes No L1 L2 L3 L1/L2 L2/L3 L1/L3 Amperage: L1 L2 L3 Amperage: L1 L2 L3 Sight Glass Oil Level: Sight Glass Oil Level: Suction Pressure: Suction Pressure: Suction Temperature: Suction Temperature: Compressor Superheat: Compressor Superheat: Discharge Pressure: Discharge Pressure: Discharge Line Temperature (F): Discharge Line Temperature (F): Discharge Gas Superheat (F): Discharge Gas Superheat (F): Liquid Line Temperature: Liquid Line Temperature: Liquid Subcooling: Liquid Subcooling: Evaporator Entering Water Temperature: Evaporator Entering Water Temperature: Evaporator Leaving Water Temperature: Evaporator Leaving Water Temperature: Condenser Entering Water Temperature: Condenser Entering Water Temperature: Condenser Leaving Water Temperature: Condenser Leaving Water Temperature: Evaporator Pressure Differential: Condenser Pressure Differential: Software Version: ► Verify Safety Setting Limits: ► Verify Safety Setting Limits: Low Temp: Low Temp: Rep Signature: Print Name: E-Signature: Low Pressure: For initial MANDATORY water samples, bottles are provided. Follow instructions on label and mail the same day sample is taken. Bank Water Pressures Entering / Leaving Phase / Phase Compressor Circuit #1 Voltage / Ground Bank No.: Ambient Temp: Module Compressor Circuit #2 Startup and Warranty Registration Form (Water-Cooled UCW/H) 1 of 1 Sign, date and E-mail to: [email protected] or Fax: 405.815.3052 Attn: Technical Support ► Rotation of scroll compressor is correct: Compressor Water Samples Taken (Mark "X") (Authorized Signature) High Pressure: High Pressure: Low Pressure: Low Voltage (24V): Check Box Doc: WaterCooledStartup UCW/H SD #0012 Rev. 8.26.14 1

A log of temperatures and pressures should be taken regularly. Periodically conduct a visual inspection of the chiller to identify problems before they reach the point of failure. As with any mechanical system, it is necessary to conduct a series of checks to confirm correct operation of the chiller. Chiller Operation and Maintenance WARNING/AVERTISSEMENT WATER AND REFRIGERANT SYSTEMS UNDER PRESSURE • Isolate/Lockout source and relieve pressure BEFORE servicing equipment. • Failure to relieve pressure may result in property damage, serious bodily injury or death! EAU ET FRIGORIGÈNE EQUIPEMENTS SOUS PRESSION • Isoler la source / de verrouillage et de soulager la pression avant entretien de l’équi- pement. • Le défaut de soulager la pression peut entraîner des dommages matériels, des blessures corporelles graves ou la mort! Date SUN MON TUE WED THU FRI SAT Chilled Water Entering Temperature Chilled Water Leaving Temperature Condenser Water Entering Temperature Condenser Water Leaving Temperature Source Water Entering Temperature Source Water Leaving Temperature Chilled Water Pressure Drop Condenser Water Pressure Drop Source Water Pressure Drop Faults: Note By Module Number Chiller No. Technician Date SUN MON TUE WED THU FRI SAT Chilled Water Entering Temperature Chilled Water Leaving Temperature Condenser Water Entering Temperature Condenser Water Leaving Temperature Source Water Entering Temperature Source Water Leaving Temperature Chilled Water Pressure Drop Condenser Water Pressure Drop Source Water Pressure Drop Faults: Note By Module Number Chiller No. Technician Date SUN MON TUE WED THU FRI SAT Chilled Water Entering Temperature Chilled Water Leaving Temperature Condenser Water Entering Temperature Condenser Water Leaving Temperature Source Water Entering Temperature Source Water Leaving Temperature Chilled Water Pressure Drop Condenser Water Pressure Drop Source Water Pressure Drop Faults: Note By Module Number Chiller No. Technician Maintaining a Daily Log Daily • A daily operational log should be kept. • Perform visual inspection. • Record entering and leaving chiller water and condenser water temperatures and pressures. • Properly document all data taken. • Note any problems that may exist and immediately plan for further investigation. If repair is necessary, schedule for the earliest possible date. Weekly • Review daily log from previous week. • Perform visual inspection. • Properly document all data taken. • Note any problems that may exist and immediately plan for further investigation. If repair is necessary, schedule for the earliest possible date. Quarterly • Check Master Control Panel operating parameters and set points. • Check temperature drop/rise on each individual heat exchanger. * • Check compressor oil level. • Check compressor oil color. • Check water flow rates and pressure drops across evaporator and condenser heat exchangers. • Properly document all data taken. • Check all electrical connections for tightness. * The temperature drop/rise on a fully loaded (both compressors) heat exchanger is generally 10°F. If only one compressor is running the temperature drop/rise will be approximately 5°F. Some projects are designed to have a higher or lower temperature drop on either the evaporator or the condenser depending on application. Consult the bank performance sheet for your specific project for these values. If the temperature drop/rise is greater than the design, your heat exchanger may need to be back flushed or the strainer may need to be cleaned. Annual • Back flush all heat exchangers. If fouling is suspected use only ClimaCool recommended de-scalers (See Chemical Clean In Place Washing on page 32). • Remove and clean all waterside strainers. • Manually operate all waterside isolation valves, if provided, on each module. • Check all electrical connections for tightness. • Perform leak check on all refrigerant circuits. • Check all header piping couplings for tightness. • Check oil level and color on each compressor. • Check and test all refrigerant safeties for proper operation. • Check all peripheral systems for proper operation. • Check and test CoolLogic Control System. • Verify set points, sensors and general control configuration. • Properly document all data taken. Very Hot Water! L’eau Trés Chaude! WARNING/AVERTISSEMENT

such as flushing a heat exchanger, it will be necessary to close off a section of a module. This can easily be done if factory mounted water isolation valves are provided. Access to a floor drain is helpful when performing standard maintenance procedures. Back Washing It may become evident from the recorded weekly log data that the performance of the chiller is gradually degrading. This could be due to a buildup of debris or sludge obstructing the free passage of flow through the heat exchangers. This debris can be removed by a back washing process which involves the introduction of a forced, violent backwards flow through the heat exchanger using a carefully formulated flushing solution. To be effective, this back flow should be slightly higher than the normal flow, and in the opposite direction. The difficulties and practicality of this method depend on the back wash pumping system itself. Another method is to back flush each heat exchanger using city water as opposed to system water (see Figure 25 – City Water Cleaning Arrangement on page 33). The back washing procedure is accomplished by isolating each individual heat exchanger and introducing the city water using a connection hose to the ¾” service port to flow in an opposite direction from the normal heat exchanger flow direction. On the opposite ¾” service port, connect a drain hose to run to a suitable floor drain. Continue the back flow until all debris is removed. Warning: Water valves must be re-opened after flushing is complete. Chemical Clean In Place Washing Without Water Isolation Valves Chemical Clean in place washing will typically provide the best debris removal, even from severely clogged heat exchangers. In order to clean the heat exchangers for modules WITHOUT water isolation valves, it will be necessary to mechanically and electrically isolate each module separately from the bank of modules. The rest of the chiller modules will need to be disabled during this cleaning procedure as the flow through the main bank header will be interrupted. The cleaning tank, pump and pump strainer should be arranged in the manner shown in Figure 26 - In Place Cleaning Arrangement (page 33). The flow of the cleaning is arranged in the opposite flow to the normal operational direction. Connection points are provided using the ¾” service ports at each heat exchanger. The cleaning solution used can be either a detergent or hot water to remove particles and simple cleaning. If correct water treatment has been implemented, this should provide adequate cleaning for most situations. The solution can be pumped through the heat exchangers and allowed to “soak” for a time and then pumped again. Upon successful cleaning of a module, proceed to isolate a second module separately from the bank to repeat the cleaning process. Chemical Clean In Place Washing With Water Isolation Valves Chemical Clean in place washing will typically provide the best debris removal, even from severely clogged heat exchangers. It is only necessary to mechanically and electrically isolate one module at a time. The rest of the chiller modules can continue to operate to satisfy the required cooling load. The cleaning tank, pump and pump strainer should be arranged in the manner shown in Figure 26 - In Place Cleaning Arrangement on page 33. The flow of the cleaning is arranged in the opposite flow to the normal operational direction. Connection points are provided using the ¾” service ports at each heat exchanger. The cleaning solution used can be either a detergent or hot water to remove particles and simple cleaning. If correct water treatment has been implemented, this should provide adequate cleaning for most situations. The solution can be pumped through the heat exchangers and allowed to soak for a time and then pumped again. If it is required to remove carbonates, then an acidic wash should be used. A 2% solution of phosphoric or sulfamic acids in pure water are generally acceptable. These acid solutions should only be allowed to circulate within the heat exchanger for 10 to 15 minutes, followed by a thorough pure water flush for 10 to 15 minutes. Hydrochloric or sulfuric acids must not be used. In any case, consult the chemical supplier to establish the correct formulation and handling process. The materials exposed to the wash are stated on page 20 – Water Treatment. Once the washing is complete, the solution should be flushed out completely by pumping clean, fresh water through the chiller. To achieve a reasonable level of dilution, it may be required to change the water several times. After cleaning, the water quality and water treatment should be confirmed. Heat Exchangers

Notes: 1. When backwashing, be sure to flush in opposite direction of flow. 2. Be sure to open all manual valves before unit is put back into operation. Pete's Ports Isolation Ball Valves (2, 2 ½ or 3") Service Port (3/4") Heat Exchanger Figure 1 - City Water Cleaning Arrangement Figure 2 - In Place Cleaning Arrangement Connect to City Water Refrigerant Circuit Service Port (3/4") Refrigerant Circuit Connect to Drain Header Header To Cooling Tower From Cooling Tower Pete's Ports Isolation Ball Valves (2, 2 ½ or 3") Service Port (3/4") Heat Exchanger Refrigerant Circuit Service Port (3/4") Refrigerant Circuit Header Header To Cooling Tower From Cooling Tower Cleaning Tank Cleaning Pump Pete's Ports Isolation Ball Valves (2, 2 ½ or 3") Service Port (3/4 ) Heat Exchanger Figure 2 - In Place Cleaning Arrangement Connect to City Water Refrigerant Circuit Service Port (3/4") Refrigerant Circuit Connect to Drain Header Header To Cooling Tower From Cooling Tower Pete's Ports Isolation Ball Valves (2, 2 ½ or 3") Service Port (3/4") Heat Exchanger Refrigerant Circuit Service Port (3/4") Refrigerant Circuit Header Header To Cooling Tower From Cooling Tower Cleaning Tank Cleaning Pump Figure 26 - In Place Cleaning Arrangement

limitations may cause serious damage to the compressor. Water Flow Data UCW/H 030 UCW/H 050 UCW/H 070 UCW/H 085 Minimum Evaporator Water Flow (gpm) 40 65 85 100 Maximum Evaporator Water Flow (gpm) 165 250 250 350 Minimum Condenser Water Flow (gpm) 30 50 70 85 Maximum Condenser Water Flow (gpm) 165 250 250 485 Minimum Leaving Evaporator Water Temperature (No Glycol)(°F) 40 40 40 40 Minimum Leaving Evaporator Water Temperature (with Glycol)(°F) 20 20 20 20 Maximum Leaving Evaporator Water Temperature (°F) 62 62 62 62 Minimum Evaporator Water Differential Temperature (°F) 5 5.4 5.9 4.5 Maximum Evaporator Water Differential Temperature (°F) 20 20 20 20 Minimum Entering Condenser Water Temperature (°F) 60 60 60 60 Minimum Condenser Water Differential Temperature (°F) 6.5 6.9 7.2 5.5 Maximum Condenser Water Differential Temperature (°F) 30 30 30 30 Water Flow Data UCW 030 UCW 050 UCW 070 UCW 085 Maximum Leaving Condenser Water Temperature (0F) 110 110 110 110 Water Flow Data UCH 030 UCH 050 UCH 070 UCH 085 Maximum Leaving Condenser Water Temperature (0F) 135 135 135 135 Equipment Room Data UCW/H 030 UCW/H 050 UCW/H 070 UCW/H 085 Minimum Equipment Room Ambient Temperature (0F) 55 55 55 55 Maximum Equipment Room Ambient Temperature (oF) 105 105 105 105 UCW UCH UCW UCH Maximum Compression Ratio 5.0:1 5.7:1 4.8:1 5.7:1 Minimum Operating Pressure Differential (psi) 85 85 85 85 Maximum Operating Pressure Differential (psi) 290 475 290 475 Minimum Discharge Pressure (psig) 215 215 215 215 Maximum Discharge Pressure (psig) 395 590 395 590 Minimum Suction Pressure (No Glycol)(psig) 90 90 90 90 Minimum Suction Pressure (With Glycol)(psig) 70 70 70 70 Maximum Suction Pressure (psig) 155 155 155 155 Maximum Discharge Temperature (°F) 225 265 225 265 Minimum Subcooling (°F) 5 5 5 5 Maximum Subcooling (°F) 15 15 15 15 Minimum Superheat at Compressor (°F) 6 6 6 6 Maximum Superheat at Compressor (°F) 12 12 12 12 Maximum Oil Temperature (Max) (°F) 160 200 160 200 Maximum Saturation Discharge Temperature (°F) 120 145 114 145 Compressor Operating Limitations 30, 50, 70 Tons 85 Tons 1 1 1 1 Note: 1. The minimum/maximum flow rates are based on approximate temperature differential of 5oF to 20oF through the evaporator and 5oF to 30oF through the condenser. Flow rates vary based on applocationl verify with selection software.

efficient and extremely reliable. The information contained in this manual will be useful for their care. Compressor Rotation All scroll-type machines are unidirectional and will only compress in one direction. Operating in the reverse rotation can be destructive and will be indicated by a loud operating noise together with a lack of compression. Compressor Anti-Short Cycle Timer Built into the logic of the CoolLogic Control System is an anti-short cycle timer which will prevent the compressors from restarting immediately following a compressor shutdown. Minimum on 75 seconds and minimum off 200 seconds. Compressor Lubrication The compressor operates on a sealed system and oil can only be lost if a leak occurs. There are few cases when oil will need to be added to a machine in normal operation. Oil Type The oil in scroll compressors will be either Polyolester type oil (POE) or polyvinyl-ether type oil (PVE). Both refrigerant oils require special handling and should be protected from contamination. They are extremely hygroscopic and will absorb moisture rapidly from the air. It is strongly recommended to store and dispense both oils from sealed metal cans. Note: Refer to compressor name plate for proper oil type. Different oils cannot be mixed. Oil Levels The oil level in the compressor should be checked with the compressor running. The compressor oil level may vary during operation and particularly on the startup. The normal operating compressor oil level should be between 1/3 and 1/2 of the sight glass. During operation, a certain amount of oil is carried out into the refrigerant system. The system has been designed to bring the oil back to the compressor. If the level in the sight glass falls, it may be due to the operating conditions and enough time should be given to allow the oil to return before more oil is added. This could take up to six hours of operation. The compressor should not be allowed to operate with less than 1/8 of the sight glass for longer than four to six hours. Adding Oil The compressor must never be ran in a vacuum. A suitable hydraulic pump should be used to add oil and reserved for this process. It is imperative that oil type be verified prior to adding to a compressor. Oil should only be added to a compressor while it is operating to observe valid oil sight glass levels. Oil is pressure-injected either into a gauge connection on the suction line or injected into the oil process port at the bottom of the compressor housing. Only enough oil should be added to raise the level above the 1/3 sight glass point. Compressor Information ATTENTION To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must be serviced only by technicians who meet local, state and federal proficiency requirements. All refrigerant discharged from this unit must be recovered WITHOUT EXCEPTION. Technicians must follow industry accepted guidelines and all local, state and federal statues for the recovery and disposal of refrigerants. If a compressor is removed from the unit, system refrigerant circuit oil will remain in the compressor. To avoid leakage of compressor oil, the refrigerant lines of the compressor must be sealed after it is removed. If this unit uses a 3 Phase Scroll Compressor, the following instructions MUST BE followed: • Unit power supply MUST BE wired in the proper sequence to avoid damage to the 3 Phase Scroll Compressor; • Scroll Compressors with INCORRECT rotation show the following characteristics: - High sound level; - High suction pressure and low discharge pressure; - Low current draw. • If any of the three above characteristics exist, swap two of the three supply wires at the disconnect and recheck compressor for incorrect rotation. Si cet appareil utilise compresseur scroll 3-Phase, les instructions suivantes doivent être suivies: • L’alimentation de l’appareil doit être monté dans l’ordre correct pour éviter endommager le compresseur scroll 3-Phase • Compresseurs scroll avec rotation incorrecte montrent les caractéristiques suivantes: - Haut niveau de son; - Pression d’aspiration élevée et une faible pression de décharge; - Faible ampérage • Si l’un des trois éléments mentionnés ci-dessus sont remplies , échanger deux des trois lignes électriques alimen tant la interrupteur de sécurité et vérifier la rotation du compresseur. 3 PHASE SCROLL COMPRESSOR UNITS UNITÉ DE COMPRESSEUR SCROLL 3-PHASE CAUTION/ATTENTION

SIZE ClimaCool Corp. CCE-08001-2.VSD DWG NO CCE-08001-2.VSD REV SHEET 1 OF 1 TITLE REFRIGERATION CIRCUIT DIAGRAM DATE DRAWN BY Gus Olivera SCALE NONE A FILENAME CCE-08001-2.vsd REVISED C APPROVED DATE 04/2012 DESCRIPTION UCW/H WATER COOLED SCROLL CHILLER (REFRIGERANT CIRCUIT #1 OF 2 SHOWN) SYMBOL LEGEND = TEMPERATURE SENSOR = LEGEND ITEM # = SOLDER JOINT = PRESSURE TRANSDUCER = "TEE" SOLDER JOINT = REFRIGERANT FLOW PATH = PRESSURE ACCESS FITTING LL = LIQUID LINE SL = SUCTION LINE SP = SUCTION PRESSURE HP = HEAD PRESSURE TXV = THERMAL EXPANSION VALVE DX = DI RECT EXPANSION W/C = WAT ER COOLED TXV BULB EQUALIZER LINE FLUSH SHUT-OFF VALVE CHILLER WATER INLET VALVE CHILLER WATER OUTLET VALVE S4 S5 S2 S3 CONDENSER WATER PIPING CHILLER WATER PIPING 1 2 5 6 7 8 9 4 REFRIGERANT CIRCUIT #2 REFRIGERANT CIRCUIT #1 REFRIGERANT CIRCUIT #1 REFRIGERANT CIRCUIT #2 3 COMPONENT LEGEND 1. SCROLL COMPRESSOR 2. HIGH PRESSURE SAFETY SW. 3. HOT GAS BYPASS VALVE 4. W/C BRAZED PL. CONDENSER 5. PRESSURE RELIEF VALVE 6. LIQUID LINE FILTER DRIER 7. SIGHT GLASS MOISTURE INDICATOR 8. THERMAL EXPANSION VALVE 9. W/C BRAZED PL. EVAPORATOR S1. DISCHARGE TEMPERATURE SENSOR S2. COND. INLET TEMPERATURE SENSOR S3. COND. OUTLET TEMP. SENSOR S4. EVAP. INLET TEMPERATURE SENSOR S5. EVAP. OUTLET TEMP. SENSOR S6. SUCTION TEMPERATURE SENSOR PT1. DISCHARGE PRESSURE TRANSDUCER PT2. SUCTION PRESSURE TRANSDUCER FILL SHUT-OFF VALVE CHILLER OUTLET WATER MAIN (6"or 8") CHILLER INLET WATER MAIN (6"or 8") FILL SHUT-OFF VALVE CONDENSER WATER INLET VALVE CONDENSER WATER OUTLET VALVE FLUSH SHUT-OFF VALVE CONDENSER OUTLET WATER MAIN (6" or 8") CONDENSER INLET WATER MAIN (6" or 8") PETE'S PORTS PETE'S PORTS PT2 PT1 (WHEN USED) (WHEN USED) EQUALIZER LINE (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) # PT# S # S1 (WHEN USED) S6 (WHEN USED)

SIZE ClimaCool Corp. CCE-09001-2.VSD DWG NO CCE-09001-2.VSD REV SHEET 1 OF 1 TITLE REFRIGERATION CIRCUIT DIAGRAM DATE DRAWN BY Gus Olivera SCALE NONE A FILENAME CCE-09001-2.vsd REVISED C APPROVED DATE 04/2012 DESCRIPTION UCH WATER COOLED SCROLL HEAT PUMP CHILLER (REFRIGERANT CIRCUIT #1 OF 2 SHOWN) SYMBOL LEGEND = TEMPERATURE SENSOR = LEGEND ITEM # = SOLDER JOINT = PRESSURE TRANSDUCER = "TEE" SOLDER JOINT = REFRIGERANT FLOW PATH = PRESSURE ACCESS FITTING LL = LIQUID LINE SL = SUCTION LINE SP = SUCTION PRESSURE HP = HEAD PRESSURE TXV = THERMAL EXPANSION VALVE DX = DIRECT EXPANSION W/C = WATER COOLED EQUALIZER LINE FLUSH SHUT-OFF VALVE CHILLER WATER INLET VALVE CHILLER WATER OUTLET VALVE S4 S5 S2 S3 CONDENSER WATER PIPING CHILLER WATER PIPING 1 2 5 6 7 8 9 4 REFRIGERANT CIRCUIT #2 REFRIGERANT CIRCUIT #1 REFRIGERANT CIRCUIT #1 REFRIGERANT CIRCUIT #2 3 COMPONENT LEGEND 1. SCROLL COMPRESSOR 2. HIGH PRESSURE SAFETY SW. 3. REVERSING VALVE 4. W/C BRAZED PL. CONDENSER 5. PRESSURE RELIEF VALVE 6. BI-FLOW LIQUID LINE FILTER DRIER 7. SIGHT GLASS MOISTURE INDICATOR 8. BI-FLOW THERMAL EXPANSION VALVE 9. W/C BRAZED PL. EVAPORATOR S1. DISCHARGE TEMPERATURE SENSOR S2. COND. INLET TEMPERATURE SENSOR S3. COND. OUTLET TEMP. SENSOR S4. EVAP. INLET TEMPERATURE SENSOR S5. EVAP. OUTLET TEMP. SENSOR S6. SUCTION TEMPERATURE SENSOR PT1. DISCHARGE PRESSURE TRANSDUCER PT2. SUCTION PRESSURE TRANSDUCER FILL SHUT-OFF VALVE CHILLER OUTLET WATER MAIN (6"or 8") CHILLER INLET WATER MAIN (6"or 8") FILL SHUT-OFF VALVE CONDENSER WATER INLET VALVE CONDENSER WATER OUTLET VALVE FLUSH SHUT-OFF VALVE CONDENSER OUTLET WATER MAIN (6"or 8") CONDENSER INLET WATER MAIN (6"or 8") PETE'S PORTS PETE'S PORTS PT2 PT1 (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) (WHEN USED) # PT# S # S1 S6 TXV BULB REFRIGERANT FLOW COOLING HEATING (WHEN USED)

of the service technician or installing contractor. The service technician should be familiar with the following codes: • ASHRAE Standard Safety Code for Mechanical Refrigeration, ANSI/ASHRAE 15-1978 • American National Standard Code for Pressure Piping, ANSI B31.5-1974 Factory Tested ClimaCool modular chillers have been pressure-tested, evacuated, fully charged and run tested at design water flow rates prior to shipment. In the unlikely event that a refrigerant leak is detected at startup, the following guidelines should be consulted before reprocessing the refrigeration systems. Refrigerant System Reprocessing Debris and moisture can enter copper tubing in a matter of minutes. All tubing, coil connections or any refrigerant containing portions should be temporarily capped or sealed to keep contaminants to a minimum. Filter driers should be opened just prior to brazing into the system to prevent moisture infiltration whenever possible, and flood the system with low pressure dry nitrogen while brazing to prevent oxidation inside the copper piping. After all of the repairs have been made to the refrigeration system, a pressure test using refrigerant and nitrogen should be performed. Pressurize the system with dry nitrogen to 20 psi and check for any obvious leaks. If no leaks are present, introduce a “trace” amount of refrigerant to the system (raise system pressure to 30-40 psi). With a dry nitrogen tank equipped with a regulator set to 150 psi, continue to pressurize the system to 150 psi. Using a leak detector, carefully check the system for any remaining leaks. If the system is free of leaks you may release the pressure. Evacuating the System The compressors should never run while the system is in a vacuum. This could cause immediate failure to the compressors. After the system has been leak tested and sealed, any moisture that entered the system should be dehydrated and removed. While the pressure is reduced under a vacuum, the boiling point of moisture trapped inside the lines is also reduced. A pressure of .0095 psia, or 500 microns absolute pressure or better must be reached and sustained for several hours in order for the system to be considered free from moisture. It is necessary to use a micron meter equipped with an absolute pressure gauge (or transducer) to take this reading. ClimaCool recommends the triple evacuation process to ensure the proper removal of moisture and contaminants from the refrigeration system. After the initial vacuum is reached and held on the system, allow dry nitrogen back into the system until the pressure reaches zero psig or slightly higher. Then, repeat the entire evacuation process described above. The evacuation process is considered complete ONLY after a successful “blank-off” test is performed. A “blank-off” test is defined as: • Pulling a vacuum level less than 500 microns on the system and holding it for several hours. • Record the vacuum level in the system in microns, then close off the vacuum pump from the system for 15 minutes, and continue to monitor the micron level inside the refrigeration system. • If the vacuum level inside the system does NOT rise more than 400 microns above the recorded vacuum level at the start of the 15 minute period, then the evacuation process is complete. If the vacuum level rises more than 400 microns in 15 minutes, then continue to evacuate the system for 1-2 hours, and repeat a “blank-off” test. Recharging the System After all repairs have been completed, the system has been leak tested and proper vacuum pressures have been reached and maintained, refrigerant may be recharged into the system. With a known weight of refrigerant in the cylinder, use the gauge manifold set to connect the cylinder’s liquid charging port to the charging access port near the refrigerant liquid line valve. Open the compressor suction and discharge line valves, if available. Gradually meter the appropriate weight of liquid refrigerant into the condenser side of the system first, until no additional refrigerant can be dispensed. Accurate refrigerant charge per circuit may be found in the Physical Data information on page 3. Then continue the charging process by filling the evaporator side of the system with refrigerant. Close the refrigerant cylinder charging port, close all gauge manifold ports and start the compressor. Be careful when continuing to charge the balance of the refrigerant, constantly maintaining a positive compressor suction pressure (>25 psig) at all times. Refrigeration System Re-Processing and Charging ATTENTION To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must be serviced only by technicians who meet local, state and federal proficiency requirements. All refrigerant discharged from this unit must be recovered WITHOUT EXCEPTION. Technicians must follow industry accepted guidelines and all local, state and federal statues for the recovery and disposal of refrigerants. If a compressor is removed from the unit, system refrigerant circuit oil will remain in the compressor. To avoid leakage of compressor oil, the refrigerant lines of the compressor must be sealed after it is removed. WARNING/AVERTISSEMENT WATER AND REFRIGERANT SYSTEMS UNDER PRESSURE • Isolate/Lockout source and relieve pressure BEFORE servicing equipment. • Failure to relieve pressure may result in property damage, serious bodily injury or death! EAU ET FRIGORIGÈNE EQUIPEMENTS SOUS PRESSION • Isoler la source / de verrouillage et de soulager la pression avant entretien de l’équipement. • Le défaut de soulager la pression peut entraîner des dommages matériels, des blessures corporelles graves ou la mort!

General Factory-assembled and wired water cooled, water chiller. Chiller consists of two compressors, one evaporator and condenser, safety and operational controls. The modular water cooled package chiller shall incorporate one or more modules with two independent refrigerant circuits. Modules shall be capable of independent operation powered by a field installed fused disconnect switch (or equivalent circuit breaker) supplied by others, so that any one module can be shut down for repair without interrupting the remaining chiller modules in operation. Basic Construction The frame design shall consist of heavy gauge galvanized steel with 3 mil powder coat paint finish baked at 350° for resilience in transport and installation. The module must have a low center of gravity, detachable schedule 40 carbon steel pipe water headers, designed to connect to adjacent modules through the use of 300 psi rated grooved cou- plings, base with cutouts for forklift or pallet jack and the frame must be designed to fit through a standard 36” doorway. Each module has sound attenuation panels to ensure quiet operation. Refrigeration Circuit All refrigeration circuits shall contain R-410A non-ozone depleting HFC. Each independent circuit shall consist of a scroll compressor, thermostatic expansion valve for refrigerant metering, sight glass, filter drier and high and low pressure safety controls. The modular chiller bank must be able to produce chilled water even in the event of a failure of one or more refrigerant circuits. Evaporator Each evaporator shall be highly efficient, refrigerant- to-water, dual circuited, brazed plate heat exchangers constructed of 300 stainless steel; designed, tested, and UL stamped in accordance with ASME Section VIII pressure vessel code for 650 psig working refrigerant pressure. The evaporator heat exchanger shall be mounted to eliminate the effect of migration of refrigerant to the cold evaporation with consequent liquid slugging on startup. The evaporator shall be mounted on two layers of noise attenuating rubber isolation pads which also act as a thermal barrier. The evaporator shall be wrapped with ¾” closed cell insulated blanket. The closed cell insulation s hall be provided on suction side refrigerant tubing including refrigerant-to-chiller heat exchanger to prevent condensation Condenser Each condenser shall be highly efficient, refrigerant- to-water, dual circuited, brazed plate heat exchangers constructed of 300 stainless steel; designed, tested, and UL stamped in accordance with ASME Section VIII pressure vessel code for 650 psig working refrigerant pressure on the condenser. The condenser heat exchanger shall be mounted to eliminate the effect refrigerant migration to the cold evaporation with consequent liquid slugging on startup. The condenser shall be mounted on two layers of noise attenuating rubber isolation pads which also acts as a thermal barrier. Compressors Each module shall contain two scroll compressors independently circuited for redundancy. Each compressor shall be mounted with rubber isolated compressor mounts to the module base and each shall include compressor overload protection, high discharge pressure and low suction pressure cutouts. Control Panel Master Controllers shall be provided for individual control as well as system integration. The control shall consist of a simple two-conductor shielded daisy chain connection to allow communication between modules with minimal field wiring. The remote air cooled chiller control panel shall be a NEMA Type 1 enclosure including: power distribution block, compressor fusing, contactors, finger safe control fusing, transformer, isolation relays, status and alarm relay, 16-bit microprocessor master controller with built in native Building Automation System (BAS) communication protocols, (BACnet, LonWorks, Modbus and N2), status indicating lights showing: 1) compressor operation (on/off), 2) unit alarm status, 3) power on, two toggle switches to disable each individual compressor during start-up or troubleshooting. CoolLogic Control System Remote Master Control system shall be fully compatible with the Building Automation System via native BACnet and LonWorks, Modbus and N2 communication. Scheduling of the various compressors shall be performed by the master microprocessor based controller. A compressor run time equalization sequence is provided to ensure even distribution of compressor run time. A load limit control shall be available to limit the number of compressors that can be energized at one time. The CoolLogic Control System shall monitor and report the following for each refrigeration circuit in each module: • Discharge pressure and temperature faults • Suction pressure and temperature faults • Compressor winding high temperature fault • Low evaporator leaving chilled water temperature fault

The Master Controller shall monitor and report the following system parameters for the chiller system: • Chilled water entering and leaving temperature • Condenser water entering and leaving temperature • Evaporator and condenser water flow availability Any module failure condition shall cause a “fault” indication at the Master Control Panel and shutdown of that compressor circuit with the transfer of the load requirements to the next available compressor circuit. In the case of a system “fault” the entire chiller will be shut down. When any fault occurs, the CoolLogic Control System shall record conditions at the time of the fault, and store the data for recall. This information shall be capable of recall through the keypad of the Master Control Panel and displayed on the 4 line by 40 character, back-lit LCD. A history of faults shall be maintained including date and time for each fault (up to the last 100 occurrences). Internal leaving chilled water reset control will insure that the parallel evaporators are operated above the freeze point for part load operation. Factory Testing Each remote air cooled chiller module shall be pressure- tested, evacuated and charged with nitrogen.

Field installed, high quality, low maintenance stainless steel filtration systems with 60 or 80 mesh stainless steel screens will reduce operating costs and prevent nuisance condenser issues. Strainer package can be equipped with optional pressure differential alarm and automatic time flush. Heat Pump Factory installed reverse cycle heating and cooling operation compatible with boiler/tower or geothermal systems. Heat Recovery Factory installed option providing hot water, as high as 140°F, while simultaneously producing chilled water for the chiller system. Hot Gas Bypass Factory installed on both circuits allowing unit operation below the minimum step of unloading. Manual Strainers Field installed strainers utilize Y-style and Basket strainers of cast iron 200 psi or carbon 275 psi with 60 mesh stainless steel screens to increase efficiency and ensure long equipment life. All strainers are field installed external to the chiller bank for ease of service. Motorized or Manual Water Isolation Valves and Flush Ports Factory installed water isolation valves and flush ports shall provide isolation to the module for maintenance and cleaning of evaporator and condenser heat exchangers while adjacent modules continue normal operation. Both motorized and manual valves include standard ¾” fill and flush valves. Note: All Heat Pump configurations require motorized valves. Motorized condenser water valves provide head pressure regulation for low entering condenser water temperature applications (less than 60°F). Available choices include: • One each motorized valve for evaporator and condenser with one each manual valves for the evaporator and condenser. • One each motorized valve for the evaporator and one each manual valve for the evaporator and two each manual valves for the condenser. • Two each manual valves for the evaporator and the condenser. Pressure Differential Flow Sensor Field installed to prevent operation of chiller without sufficient water flow to the evaporator and/or condenser. Seismic Certification Factory installed seismic tested in accordance with OSHPD standars for cooling only chillers. Water Header Bypass Field installed water header bypass may be utilized to prevent deadheading the pump. A bypass is mandatory with all motorized valve applications. Options available for following: Direct Return: • Motorized evaporator/condenser water isolation valves • Motorized evaporator/manual condenser water isolation valves Reverse Return: • Motorized evaporator/condenser water isolation valves • Motorized evaporator/manual condenser water isolation valves Options and Accessories

Safety Considerations Prior to installation, this manual must be read carefully and all instruction understood. Personal injury or product damage can occur if the following safety precautions are overlooked or ignored. We strongly recommend that you follow these safety precautions and avoid the potential hazards listed below when operating and maintaining the strainer: 1. After unpacking your strainer, carefully inspect your strainer housing, lid assembly and screen for damaged or missing parts. Contact ClimaCool’s customer service department for any replacement parts. 2. The strainer should not be modified or used in a manner not consistent with the manufacture’s recommendations. If there are any questions regarding its application or installations, contact ClimaCool’s customer service department. 3. Absolutely under no conditions should the strainer lid or pressure gauges be removed while the strainer is pressurized. 4. Standard bolted lid models should never exceed 150 psi; V-Band clamp models should never exceed 125 psi. 5. Install back-flow prevention devices (or check valves) both upstream and downstream of the strainer to prevent back flow or vacuum effects which can cause damage to the strainer housing or screen. 6. Install properly sized pressure relief valves both upstream and downstream of the strainer. This will help prevent damage to the strainer and screen in the event that water flow is stopped abruptly, or if water hammering occurs. The pressure relief valves should be set to relieve pressure at 1.2 times the strainer’s maximum operating pressure (not to exceed the maximum rated pressure). Consult your local dealer or pressure relief valve manufacturer to obtain properly sized valves for your application. Note: Minimum 60 mesh screen is required. At no time should the internal pressure exceed the maximum rated pressure of the strainer. Strainer Installation Recommendations Follow the recommended guidelines below for strainer installation: 1. The Carbon Steel (CS) strainer should be placed on a firm, supporting surface. Failure to do so can cause stress on the weld joints. It is recommended a concrete pad be poured under the base of the strainer. The weight of the CS strainer should not be supported by the main water lines connecting it. 2. The inlet and outlet connections should be securely fastened. The arrows depict flow direction (see Figure 27). 3. The back-mount pressure gauges should be installed in the gauge ports located on the front of the strainer body. These gauges will allow you to monitor the pressure differential across the strainer screen providing an indication when the strainer element is clogged and requires cleaning. 4. The CS strainer lid must be securely fastened according to the following torque specifications to ensure product safety and an adequate seal. Torque Specifications Clamped Lid Models: CS strainer models 3CS and 4CS have “over-center latch clamp” lid designs. The over-center clamp does not require adjustment when installing or removing the lid. The lock washer is set at the factory for proper clamp compression and normally requires no field adjustment. Minor tightening may be necessary over time. The lids are installed as follows: 1. Place the clamp around the strainer lid. 2. Latch the T-bolt with the receiver and push the latch handle towards the strainer body until the safety catch engages. Bolted Lid Models: CS strainer models 6CS, 8CS and 10CS have “bolted” lid designs. Grade 5 zinc-plated bolts, nuts and washers are used to attach the lids to these strainers. See Table 3 for proper lid bolt size and torque rating for each strainer (See page 43). (Exercise care when tightening the lid bolts so as not to damage the strainer lid or housing). It is important to follow the torque specifications as over-tightening may result in premature failure of the bolts. It is equally important to follow a star wheel torque pattern when tightening the lid bolts (See Figure 28). The strainer lid may not be seated down completely after the first torque sequence. A second torque sequence should be adequate to seat the lid securely to the body. Stainless Steel Strainer Option

collected and settles to the bottom of the strainer reservoir. CS-3 strainers must have a valve installed on the drainage port. The larger CS strainers (4CS, 6CS, 8CS and 10CS) are equipped with a flush port (or drainage port) extending inside the strainer. When it becomes time to clean the strainer, the flush port valve should be opened while the strainer is in operation (while pressurized and with water flowing). A thorough flushing of the strainer reservoir will depend upon the length of time the flush valve remains opened. This flush time will typically range from 15 to 60 seconds depending on the flow, inlet water pressure and the amount of debris collected by the strainer. As a general rule, the larger strainers will require higher inlet water pressures in order to achieve a complete flushing. For example, the 4CS model can be flushed with inlet water pressures as low as 15-20 psi, while the 6CS can be flushed with 30-35 psi. The 8CS and 10CS models should be flushed with inlet water pressures greater than 40 psi. Note: When shutting down the chiller for extended periods of time, the strainer should be isolated and completely drained. Strainer Element Cleaning If your strainer assembly is equipped with optional pressure gauges, you will be able to monitor the pressure differential between the inlet and outlet sides of the strainer. When this pressure differential reaches 5-10 psi the strainer element may require cleaning. Caution: Prior to dismantling the strainer for cleaning, it is imperative that the strainer assembly is isolated and completely de-pressurized. Follow the steps below when cleaning the CS strainer element: Step 1. (Bolted Lid Models): Remove the top of the strainer by removing the Grade 5 Zinc plated bolts from the lid. Step 1. (Clamped Lid Models): Remove the top of the strainer by taking off the band-clamp assembly.* Step 2. Lift the strainer element (conical screen) out of the strainer body. Step 3. Carefully scrub down the strainer element with a rigid nylon brush until all matter is loosened. Do not use a steel brush. Step 4. Wash the strainer element off with clean water. It is preferable to use a hose with a significant amount of water pressure. Do not use a pressure washer. Step 5. Wash all matter from the strainer gaskets and clean the inner-ring where the bottom of the strainer element rests. Step 6. Make sure the U-shaped gasket is fitted securely to the bottom of the strainer element. Reposition the strainer element into the body of the strainer. Step 7. Make sure the strainer head gasket is secure on top of the strainer body. On V-band models, O-rings should be seated completely in the body flange. Reposition the strainer lid back on the strainer body. Tighten the lid securely either with the bolts or with the band-clamp. * For clamped models, opening and closing is achieved without adjusting the lock nut. It is tightened at the factory to the correct compression. (Minor tightening may be necessary if the gasket loses memory over time.) To open the clamp, depress the safety latch and pull the over-center lever outward. To close the clamp, make sure the T-bolt is seated in its receiver and push the over-center lever back toward the strainer housing. Be sure that the safety latch is engaged before putting the unit to use. Figure 28 - Recommended Torquing Sequence Table 3 Table 1 Strainer Bolt Size (inches) Recommended Torque (ft. lbs) 3CS 5/16 - 18 60 - 80 4CS 3/8 - 16 15 - 25 6CS 1/2 - 13 45 - 55 8CS 1/2 - 13 45 - 55 10CS 5/8 - 11 80 - 100 Stainless Steel Strainer Option

Water hammer is a phenomenon that can occur in fluid systems with long pipes. Water hammer is a rapid change of pressure caused by a rapid change in velocity. If the flow has been abruptly shut off downstream, the pressure in the entire system is raised very quickly. What Causes Water Hammer? Any action that can cause a rapid change in the velocity of the flow can set off a water hammer, such as closing a downstream valve, pump stoppage, etc. Typically, for short lengths of pipe (below 500 feet) downstream valves that are closed within 1/10 of a second can generate water hammer. What Can Water Hammer Do? Pressure spikes from water hammer can raise fluid pressures to dangerously high values. These pressure spikes can cause serious damage to valves, pipes, strainers, joints, etc. The CS strainer is rated to an absolute maximum pressure of 150 psi for bolted lid models, and 125 psi for clamped lid models. A water hammer pressure spike that raises the pressure higher than the maximum rated pressure may result in strainer damage, voiding the manufacturer’s warranty. What Can I Do to Prevent Water Hammer? There are certain precautions that can be taken to prevent or decrease the effect of water hammer. The addition of a surge tank or accumulator fitted with a suitable pressure relief valve strategically located within the water system may provide adequate protection against the effects from water hammer. Careful attention should be given to the design and control strategy for valves and pumps so their actions do not invite a water hammer. Stainless Steel Strainer Options Automatic Timer Flush (ATF) Package Option The ATF-EA-1.5 flush valve package provides an automatic method for flushing away the debris collected in the strainer’s reservoir. The power supply and timer controls for the valve package are housed inside the ATF control box. The ATF controls can be pre-programmed to set the flushing duration and the time interval between flushes. System Components 1. Timer based valve controller: (see Figure 29) sets the flush duration (length of the flush) and the flush interval (time between flushes). 2. Electric Ball Valve: designed for dirty water use (see Figures 29 and 30). Figure 29 A GREEN POINTER INNER RING (LENGTH OF FLUSH) (FACTORY SET AT 8-SECONDS) RED POINTER OUTER RING (TIME BETWEEN FLUSHES) (FACTORY SET AT 24-HOURS) Figure 30 B [email protected] POWER FROM PDA OR 120V PLUG IN TRANSFORMER OPEN/CLOSE INDICATOR COVER-PLATE SCREWS (4) IN CORNERS OF BOX (TIMER BASED VALVE CONTROLLER) CONTROL SWITCH Figure 31 Valve Specifications (See Figure 31) A. Water-resistant polypropylene motor case B. High torque motors with perma-lube gears C. Open and close indicator D. Stainless steel ball valve and hardware E. Auto reset circuit breaker F. 90° bi-directional rotation G. Controller case Stainless Steel Strainer Option

as an open floor drain. The flush line should not undergo any changes in elevation and should be sloped downward in the direction of drainage. Do not pipe the flush or drain line into a pressurized line. Note: The Automatic Timer Flush Package needs to be programmed when it is received by the end-user. The programming is simple and takes only a few moments. However, because every application has different parameters that affect the required frequency between flushes and the duration of the flush, the end-user must choose the controller’s settings (refer to your specific strainer manual). To Program the ATF Controller 1. Plug the transformer into a 120-VAC outlet. 2. Insert the 12-VDC plug coming from the transformer into the jack on the underside of the ATF box. 3. Test for power by pressing the manual flush side of the control switch (lower switch light should come on then the valve will start to open). 4. Adjust the “ON TIME” (Valve Open) by turning the inner timer ring with the GREEN POINTER clockwise to increase duration. The ON TIME RANGE is factory set at eight seconds. (See Figure 29). 5. Adjust the “OFF TIME” (Valve Close) by turning the outer ring with the RED POINTER clockwise to increase duration. The OFF TIME RANGE is factory set at twenty- four (24) hours. (See Figure 29). 6. Set the control switch to auto flush. The red off light on the timer will come on and the upper light on the switch will come on and stay on. During the flush cycle the on light on the timer and the lower switch light will come on. Control Switch Control switch flushing is initiated by pressing and holding down the manual control switch located on the front of the controller (See Figure 30). The manual flush control switch can also be used to conveniently drain the water out of the strainer before removing the conical screen element from the strainer housing. A yellow indicator arrow on top of the ATF valve will rotate in sync with the ball valve to show the valve position (open or closed). When the manual flush control switch is released, the valve will automatically close. SAFETY FIRST! - Keep fingers away from valve opening to avoid getting caught in the moving parts. The electric motor supplied a sufficient amount of power to cause personal injury. Take precaution when handling. Water Resistance The valve and controller are water-resistant, but not water-proof. Do not install below ground level where the component can be submerged in water. Only remove the cover plate from the valve controller when setting or changing the flush settings. Keep the cover tightly sealed on the unit during normal operation. Pressure Differential Alarm Package Option The pressure differential alarm (PDA) option continually monitors and displays the strainer’s inlet and outlet differential pressure. When the strainer element (conical strainer basket) becomes significantly clogged, the pressure differential switch-gauge will trigger an audible siren and a visual flashing alarm light. These alarms are intended to alert maintenance personnel that the strainer element must be removed and cleaned (See Strainer Element Cleaning on page 43). Figure 32 PSID High PSID Low PRESSURE DIFFERENTIAL ALARM PACKAGE Alarm Reset Button FRONT VIEW LEFT SIDE VIEW Power To ATF 110 Volt/12 Volt DC Wall Transformer Visual Alarm Audible Alarm Pressure Diferential Switch-Gauge LED Power Indicator Diferential Set-Point Contact Cover-Plate Screw (4) in Corners of Box (DO NOT REMOVE). Visual Alarm RIGHT SIDE VIEW TOP VIEW BOTTOM VIEW AUX Contacts (On or Of with Alarm) Red & Black Cable Retainer Operation Instructions Remove the power supply and insert the connector end into the socket on the bottom of the PDA housing (See Figure 32 above) and plug the transformer into the power source. Standard systems are supplied with a 120V power supply to the primary of the transformer, with an output secondary of 12 VDC. The pressure differential switch-gauge is factory set to 7-8 psi. The CS strainer operates at a pressure differential slightly less than 1 psi during maximum flow when the strainer screen is clean. By the time the differential pressure reaches 7-8 psi, the strainer element will be significantly clogged and require immediate removal and cleaning. To adjust the pressure differential switch-gauge setting, insert a 1/16” allen wrench and rotate the differential set point contact to the desired location (See Figure 32). Note: It is not recommended to set the differential switch-gauge higher than 10 psi. Disabling the alarm or increasing the alarm set point could result in damage to the strainer element and allow debris to pass into the system. Stainless Steel Strainer Option

and visual alarms will be triggered and will remain engaged until both the alarm condition is corrected and the alarm-reset button is pressed (if the alarm-reset button is pressed but the differential pressure is beyond the set point, the alarms will re-engage immediately). After the strainer is cleaned and put back in service, the differential pressure should return to 1 psi. Auxiliary Contacts The PDA option is equipped with a remote alarm feature. The remote alarm contacts are located at the two black and red banana clip posts (See Figure 32). The alarm can be set up in one of two ways: 1. A remote alarm signal of 12 VDC can be sent to a central monitoring station or 2. A set of auxiliary contacts will indicate a “closed” condition when the alarm activates. (Locate the Auxiliary Contact Schematic inside the PDA box by removing the four screws on the cover plate). Water Resistance The Pressure Differential Alarm Controller is water-resistant, but not water proof. Do not install below ground level where the box can be submerged in water. Do not remove the cover plate from the PDA controller. Keep the cover tightly sealed on the module during normal operation. Problem • Seals damaged or worn out • Install repair kit • Valve is not stopping at proper closed position • Adjust limit switches Valve stem leaks • Worn stem seals • On metal valves: tighten stem packing nut 1/2 turn. CAUTION! Over tightening stem nut could cause drag on motor and trip internal circuit breaker. May require repair kit or new valve. • Loose body bolts or excessive operation pressure • Check bolts and observe recommended pressure ratings • Defective seals • Install repair kits or new valve • Swollen seals or product buildup in valve chamber • Check valve for compatibility with product, may require valve cleaning or new valve • Valve bolts too tight • Loosen bolts slightly • Stem nut too tight • Loosen stem nut slightly Troubleshooting for ATF Package Solution Valve is leaking past ball Valve hard to turn Valve body leaks Table 4 Stainless Steel Strainer Option

1. Ensure working conditions (pressure/temperature) are within the specified capacity of the product being installed. Please refer to the certified drawings to assist in determining these values. 2. Inspect all sealing surfaces to ensure gasket surfaces are free of defects (no nicks or cuts). The pipeline should also be checked for proper alignment. WYE strainers should never be utilized to realign an existing piping system. 3. Ensure that the pipeline’s mating flanges are the same type as the WYE strainer being installed. Raised face flange ends cannot be mated to flat face flange ends. 4. Ensure strainer end-to-end length and installation gap are within 1/4 in gap for gasket, and have sufficient clearance for easy opening of cover and screen removal. 5. If the WYE strainer is to be located on the discharge side of a pump, then a safety release valve must be installed between the WYE strainer and the pump. Figure 34: WYE Strainer - Flanged Ends WYE Strainers Figure 33: WYE Strainer Straining Illustration Figure 35: Bolting Sequence Pattern Note: Excessive bolt torque may damage flanges. Please refer to established flange bolt torques for guidelines. Installation Procedure: 1. Also, for maximum efficiency, install a differential pressure gauge at inlet and outlet connections or at the strainer gauge tap (if provided). 2. WYE strainers must be positioned in the pipeline ahead of the equipment requiring protection. 3. To provide for easier maintenance, the WYE strainer should be located where the drain plug can be removed. Additionally, ensure the drain or blow-off is located at the lowest position when installed. If installed in the vertical position, the WYE side of the strainer must be pointing downward. 4. Ensure there is ample space at the WYE side of the strainer for screen removal. 5. Before placing the WYE strainer into place, support the existing pipeline with pipe supports near the inlet and outlet connections. 6. Place the WYE strainer into the pipeline ensuring that the flow arrow on the body of the WYE strainer is pointing in the direction of the pipeline flow. For large or heavy strainers, appropriate material handling equipment must be used. 7. Install a standard ANSI (1/8” thick) flange gasket between the WYE strainer and pipeline flanges, on both sides. Install lubricated flange bolts and hand tighten. Flange bolts should then be tightened, using a star or crisscross pattern to evenly load the bolts, in accordance with established piping standards. This is illustrated in Figure 35. High Particle Retention & Accumulation Areas Flitered Flow Unflitered Flow Machined Seats and Caps for Fine Filtration Manual or Automated Valve Mounted to Blow Off Enables Self Cleaning Operation Once proper installation has been successfully completed, start the system gradually, at start up as well as after shut down. This eliminates sudden shock to the strainer and other equipment in the line. This is extremely important for steam service.

properly installed. The pressure differential across the strainer should be checked periodically to determine if the screen needs to be cleaned or replaced. If the pressure differential goes unchecked and the screen becomes completely clogged, the screen will break and require replacing. Note: Strainer screens are not designed to withstand the same pressure ratings as the housings. If the screen becomes completely clogged, it will be exposed to the same pressure as the housing. In most cases, this will cause the screen to fail and potentially damage downstream equipment. Regular maintenance involves: • Timely cleaning or replacement of screen • Periodically checking for leaks During normal use, the screen will become clogged with foreign matter, causing the differential pressure to increase. Once the differential pressure has increased to an unacceptable value, typically by 5 psi to 10 psi, it is time to clean or replace the screen. It is not advisable to let the differential pressure increase by 20 psi. This may cause the screen to fail and possibly damage downstream equipment. A convenient and safe way to determine when the screen needs to be replaced is to install pressure gauges on the inlet and outlet sides of the strainer. The maximum acceptable pressure drop across the strainer will indicate when the screen needs to be replaced. Screen size and construction determine the maximum pressure drop that a strainer screen can withstand. WYE Strainers Screen Removal/Cleaning/Replacement 1. Isolate the strainer by closing the inlet and outlet valve connections on either side of the WYE strainer. Make sure valves are bubble tight. 2. Open vent to relieve pressure inside and drain fluid from the strainer. 3. Once pressure is relieved, remove the WYE side cap or cover. 4. Remove screen and clean. Do not permit screed to dry as it will be difficult to remove debris after it has hardened. Avoid banging or hitting the screen to remove stubborn debris. 5. Inspect screen and cover gasket for damage. If either is damaged, replace. Always ensure there is a spare gasket and screen on hand prior to maintenance. 6. Remove any debris or sludge from within the strainer. 7. Replace cleaned or new screen into its original position, ensuring it is squarely positioned on the screen. 8. Replace cover gasket and cap or cover. Tighten cap or cover to specified torque rating. Follow the Start-up procedure outlined within the Operation Instructions. Start-Up Procedure 1. To remove all fluid from the strainer belly, a drip-leg can be installed or the piping can be placed at a 1/4” slope. Note: With piping systems that contain fluids other than water or when the working temperature is above 120°F, fluid must be drained to safe area, away from the operator. Operators should always be fitted with appropriate equipment (goggles, gloves, vests etc.) when venting or servicing is performed. 2. Start the piping system by opening the outlet valve nearest the WYE strainer’s outlet first. Then gradually open the inlet valve nearest the WYE strainers’ inlet, approximately 25% of normal operational flow. It is important to start the system gradually to avoid displacing or damaging the WYE strainer. 3. Continue to open the inlet valve until the desired service flow has been reached.

function, not by the size of the pipeline. Pre Installation Checklist: 1. Inspect the basket strainer’s flange ends and the pipeline’s mating flanges to ensure gasket surfaces are free of defects. The pipeline should also be checked for proper alignment. Strainers should never be utilized to realign an existing piping system. 2. Ensure that the pipeline’s mating flanges are the same type as the basket strainer being installed. Raised face flange ends cannot be mated to flat face flange ends. 3. Ensure that the pipeline setup allows a horizontal installation of the basket strainer. 4. If pipeline strain is a concern when installing larger basket strainers (6” and above), a concrete or steel pad should be used to provide additional support. Larger basket strainers can also be fitted with legs to assist in reducing strain on the pipeline. 5. If the basket strainer is to be located on the discharge side of a pump, then a safety release valve must be installed between the basket strainer and the pump. Installation Procedure: 1. To provide for easier maintenance, the basket strainer should be located where the drain plug can be removed and where there is ample space above the basket strainer for screen removal. 2. Before placing the basket strainer into place, support the existing pipeline with pipe supports near the inlet and outlet connections of the basket strainer. 3. Place the basket strainer into the pipeline ensuring that the flow arrow on the body of the basket strainer is pointing in the direction of the pipeline flow. For large or heavy strainers, lift the basket strainer into place using slings positioned underneath the inlet and outlet connections. Figure 36 - Installed Basket Strainer with Bolted Cover Figure 37: Bolting Sequence Pattern Note: Excessive bolt torque may damage flanges. Please refer to established flange bolt torques for guidelines. Operation Once proper installation has been successfully completed, start the system gradually, at start up as well as after shut down. This eliminates sudden shock to the strainer and other equipment in the line. This is extremely important for steam service. Start-Up Procedure 1. Remove air from the pipeline by opening the vent near the basket strainer. Note: With piping systems that contain fluids other than water or when the working temperature is above 120°F, fluid must be drained to safe area, away from the operator. Operators should always be fitted with appropriate equipment (goggles, gloves, vests etc.) when venting or servicing is performed. 2. Start the piping system by opening the outlet valve nearest the basket strainer’s outlet first. Then gradually open the inlet valve nearest the basket strainer’s inlet, approximately 25% of normal operational flow. It is important to start the system gradually to avoid displacing or damaging the basket strainer. 3. Continue to open the inlet valve until the desired service flow has been reached. Basket Strainer Cover Basket Strainer Screen Pipeline Flow 4. Install a standard ANSI (1/8” thick) flange gasket between the basket strainer and pipeline flanges, on both sides. Install lubricated flange bolts and hand tighten. Flange bolts should then be tightened, using a star or crisscross pattern to evenly load the bolts, in accordance with established piping standards. This is illustrated in Figure 37. Start the piping system by opening the outlet valve nearest the basket strainer’s outlet first. Then gradually open the inlet valve nearest the basket strainer’s inlet, approximately 25% of normal operational flow. It is important to start the system gradually to avoid displacing or damaging the basket strainer. Continue to open the inlet valve until the desired service flow has been reached.

properly installed. The pressure differential across the strainer should be checked periodically to determine if the screen needs to be cleaned or replaced. If the pressure differential goes unchecked and the screen becomes completely clogged, the screen will break and require replacing. Note: Strainer screens are not designed to withstand the same pressure ratings as the housings. If the basket becomes completely clogged, it will be exposed to the same pressure as the housing. In most cases, this will cause the basket to fail and potentially damage downstream equipment. Regular maintenance involves: • Periodically checking for leaks • Timely cleaning or replacement of screen During normal use, the basket will become clogged with foreign matter, causing the differential pressure to increase. Once the differential pressure has increased to an unacceptable value, typically by 5 psi to 10 psi, it is time to clean or replace the screen. It is not advisable to let the differential pressure increase by 20 psi. This may cause the screen to fail and possibly damage downstream equipment. A convenient and safe way to determine when the screen needs to be replaced is to install pressure gauges on the inlet and outlet sides of the strainer. The maximum acceptable pressure drop across the strainer will indicate when the screen needs to be replaced. Screen size and construction determine the maximum pressure drop that a strainer screen can withstand. Please consult factory for exact pressure ratings. Strainer Element Cleaning Before removing the cover of the basket strainer, the pressure inside the vessel must be reduced to atmospheric via suction or venting. Failure to do so may result in serious bodily injury. 1. Isolate the basket strainer by closing the inlet and outlet valve connections on either side of the basket strainer. 2. Open vent or drain plug to relieve pressure inside the basket strainer. Drain fluid up to screen seat level. 3. Once pressure is relieved, remove the cover. 4. Remove baskets and clean. Avoid banging or hitting the screen to remove stubborn debris. 5. Inspect basket and cover gasket for damage. If either is damaged, replace. Always ensure there is a spare gasket and basket on hand prior to maintenance. 6. Remove any debris or sludge from within the basket strainer. 7. Replace clean basket into its original position, enrusing it is squarely positioned on the screen seat. 8. Replace cover gasket and replace and tighten cover. Follow the Start-up precedure outlines within the Operation Instructions.

Rated Min.Cir. MaxFuse Rec. Discon. Rated Min.Cir. Locked MaxBreaker Rec. Load Amps Size Fuse Switch Load Amps Rotor Size Fuse Amps1 (MCA)2 (MOP)3, 4 Size 4,5 Size6 Amps1 (MCA)2 (LRA)7 (MOP)3 Size5 UCW030AHASAXB0S 208-230/3/60 85 96 125 110 150 42.7 53.3 425 90 70 UCW030AFASAXB0S 460/3/60 39 43 60 50 70 19.3 24.1 187 40 30 UCW030ANASAXB0S 575/3/60 31 35 50 40 50 15.4 19.3 148 30 25 UCW050AHASAXB0S 208-230/3/60 147 166 225 200 225 73.7 92.1 500 150 N/A UCW050AFASAXB0S 460/3/60 67 75 100 90 100 33.3 41.7 250 70 60 UCW050ANASAXB0S 575/3/60 53 60 80 70 80 26.7 33.3 198 50 45 UCW070AHASAXB0S 208-230/3/60 190 214 300 250 300 95.1 118.9 600 200 N/A UCW070AFASAXB0S 460/3/60 86 97 125 110 150 43.0 53.8 310 90 70 UCW070ANASAXB0S 575/3/60 69 77 110 90 110 34.4 43.0 255 70 60 UCW085AHASAXB0S 208-230/3/60 225 253 350 300 350 112.4 140.5 732 250 N/A UCW085AFASAXB0S 460/3/60 102 115 175 150 175 50.8 63.5 368 110 N/A UCW085ANASAXB0S 575/3/60 82 92 125 110 125 40.7 50.8 292 90 70 1. 2. 3. 4. 5. 6. 7. 8. 9. UCW085 575V / 60 Hz: Min. 518V Max. 632V NOTES: Module internal wiring is per NEC. Voltage Tolerance Range: 208-230V / 60 Hz: Min. 187V Max. 253V 460V / 60 Hz: Min. 414V Max. 506V MCA - Minimum Circuit Ampacity is: 125% of the RLA of the largest compressor motor plus 100% of the RLA of all other concurrent motors and/or electrical loads. RLA - Rated Load Amps are calculated as per UL1995. MOP - Maximum Overcurrent Protected Device Amp Size is rounded down from: 225% of the RLA of the largest compressor motor plus 100% of the RLA of all other concurrent electrical loads. Model Type Model # Voltage Recommended Dual Element Fuse Sizing: Rounded up from 150% of the RLA of the largest compressor motor plus 100% of the RLA Disconnect Switch for Module Power Wiring supplied by others. These are recommended values for electrical power LRA - Locked Rotor Amps are instantaneous starting amperage per compressor. Power Wiring - per Module UCW030 UCW050 UCW070 MOP Device or Recommended Fusing Device for Module Power Wiring supplied by others. These are recommended values for electrical power protection of modules selected. Internal Wiring - per Compressor

Rated Min.Cir. MaxFuse Rec. Discon. Rated Min.Cir. Locked MaxBreaker Rec. Load Amps Size Fuse Switch Load Amps Rotor Size Fuse Amps1 (MCA)2 (MOP)3, 4 Size 4,5 Size6 Amps1 (MCA)2 (LRA)7 (MOP)3 Size4, 5 UCH030AHASAXB0S 208-230/3/60 113 127 175 150 175 56.4 70.5 425 125 N/A UCH030AFASAXB0S 460/3/60 51 57 80 70 80 25.5 31.9 173 50 40 UCH030ANASAXB0s 575/3/60 41 46 60 60 70 20.4 25.5 128 45 35 UCH050AHASAXB0S 208-230/3/60 189 213 300 250 300 94.7 118.4 605 200 N/A UCH050AFASAXB0s 460/3/60 86 96 125 110 150 42.8 53.5 272 90 70 UCH050ANASAXB0s 575/3/60 69 77 110 90 110 34.3 42.8 238 70 60 UCH070AHASAXB0s 208-230/3/60 249 280 400 325 400 124.3 155.4 599 250 N/A UCH070AFASAXB0s 460/3/60 112 126 175 150 175 56.2 70.3 310 125 N/A UCH070ANASAXB0s 575/3/60 90 101 125 125 150 45.0 56.2 239 100 70 UCH085AHASAXB0s 208-230/3/60 317 357 500 400 500 158.5 198.1 732 350 N/A UCH085AFASAXB0s 460/3/60 144 162 225 200 225 71.7 89.6 368 150 N/A UCH085ANASAXB0s 575/3/60 115 129 175 150 175 57.3 71.7 292 125 N/A 1. RLA - Rated Load Amps are calculated as per UL1995. 2. 3. 4. 5. 6. 7. LRA - Locked Rotor Amps are instantaneous starting amperage per compressor. 8. Module internal wiring is per NEC. 9. Power Wiring - per Module Model Type Model # Voltage UCH050 UCH070 UCH085 Internal Wiring - per Compressor UCH030 575V / 60 Hz: Min. 518V Max. 632V MOP Device or Recommended Fusing Device for Module Power Wiring supplied by others. These are recommended values for electrical power protection of modules selected. Disconnect Switch for Module Power Wiring supplied by others. These are recommended values for electrical power protection of modules selected. NOTES: MCA - Minimum Circuit Ampacity is: 125% of the RLA of the largest compressor motor plus 100% of the RLA of all other concurrent motors and/or electrical loads. MOP - Maximum Overcurrent Protected device amp size is rounded down from: 225% of the RLA of the largest compressor motor plus 100% of the RLA of all other concurrent electrical loads. Recommended Dual Element Fuse Sizing: Rounded up from 150% of the RLA of the largest compressor motor plus 100% of the RLA of all other concurrent electrical loads. Voltage Tolerance Range: 208-230V / 60 Hz: Min. 187V Max. 253V 460V / 60 Hz: Min. 414V Max. 506V

Power Distribution Drawing Notes: 1. Breaker panel represents field power supply and is to be installed by others. Not provided as part of the ClimaCool modular chiller system. 2. Breaker panels can be supplied for skid mount pump/tank packages or new construction projects as options. Consult your local ClimaCool Representative. 3. Control wiring by others. 4. Field connections are simplified requiring only a two-conductor shielded cable daisy chain from the master controller to the modules. (See Figure 38). Specifications for ARC156 Wiring • Description - Single twisted pair, low capacitance, CL2P, TC foam FEP, plenum rated cable • Conductor - 18 AWG (7x30) stranded copper (tin plated) 0.0.0 in. (0.762mm) O.D. • Insulation – Foamed FEP, 0.015 in. (0.381mm) wall, 0.060 in. (1.524mm) O.D. • Twist Lay – 2 in. (50.8mm) lay on pair, 6 twists/foot (20 twists/meter) nominal • Shielding – Aluminum/Mylar shield with 24 AWG (7x32) TC drain • DC Resistance – 15.2 Ohms/1000 feet (50 Ohms/km) nominal • Capacitance – 12.5 pF/ft (41 pF/meter) nominal conductor to conductor • Characteristic Impedance – 100 Ohms • Weight – 12 lb/1000 feet (17.9 kg/km) • UL temperature rating – SmokeGard: 167°F (75°C) Halar: -40 to 302°F (-40 to 150°C) • Voltage – 300 Vac, power limited • UL: NEC CL2P, or better Cable Shields Do not ground the shield to earth ground or to the control module’s power ground. The PROT485 and the individual control modules allow the shield to float a limited amount so that there are no ground loops. If the voltage on the shield becomes too great relative to the earth ground, then the excess voltage is bled off with protective devices on the PROT485 or on the control modules. Noise Avoidance Avoid running communication wires or sensor input wires next to AC power wires or the control module’s relay output wires. These can be a source of noise that can affect signal quality. Common sources of noise are: Spark ignitors Radio transmitters Variable speed drives Electric motors (> 1hp) Generators Relays Transformers If noise is a problem and you cannot move the wiring, use ferrite clamp-on chokes on the cabling to improve signal quality. Induction heaters Large contactors (ex.motor starters) Video display devices Lamp dimmers Fluorescent lights Parallel runs with power lines Other electronic modules Figure 38

could result in exposure to electrical safety hazards. Please refer to the safety warnings provided in this manual. Failure to follow all of the recommended safety warnings provided could result in death or serious injury. When possible, Chiller Will Not Start Possible Cause Remedy Power off Check main disconnect switch. Main line open Check main fuses. Incorrect wiring Check the wiring diagram. Loose terminals/connections Tighten the terminal connections. Control circuit open Check interlocks with auxiliary equipment, pressure and temperature controls. Improper phasing of main power Change any two of three phases of main power. Compressor Hums But Does Not Start Possible Cause Remedy Low voltage Check at main power entry and unit power entry (consult power company if low). Phase loss Check power wiring and fuses. Compressor Runs But Does Not Cool Possible Cause Remedy Improper phasing of main power Switch any two of three phases of main power. Compressor Cuts Out On Low Pressure Safety Control Possible Cause Remedy Main chilled water valve closed or restricted Open valve to full open position. Module chilled water isolation valves, if provided, closed or restricted Open valves to full open position. Refrigerant storage Check for leaks – add refrigerant. No load on water chiller Check water pump operation. Restriction in liquid line Plugged liquid line drier – replace liquid line drier. Expansion valve clogged or inoperative Repair/replace the expansion valve. Low discharge pressure Raise and control discharge pressure within design limits. Low water flow through the cooler Check water flow through the cooler. Chilled water temperature too cold Raise water temperature setpoint. Fouled evaporator brazed plate heat exchanger Clean-in-place heat exchanger as described in IOM (page 31). Improper chilled water circulation Use an ample sized cleanable strainer in the chilled water circuit; make certain the strainer is clean to insure full flow of chilled water (strainer screen must be 60 mesh minimum). Faulty suction pressure transducer Verify transducer calibration using a calibrated manifold gauge and replace if defective. Wrong suction pressure cutout setpoint Verify suction pressure cutout setpoint to be set equal to the corresponding leaving chilled solution freeze temperature equivalent pressure on a PT chart. (i.e. If the solution freeze point is 32oF, the equivalent pressure setpoint will be 101 psig). disconnect all electrical power including remote disconnects before servicing. Follow proper lockout/tagout procedures. Only a qualified licensed electrician or persons trained to handle live electrical components should be allowed to work with energized electrical components. page 32

Possible Cause Remedy Main condenser water valve closed or restricted Open valve to full open position. Module condenser water isolation valves, if provided, closed or restricted Open valves to full open position. Water regulating valve incorrectly set or defective Reset or replace. Compressor discharge valve partially closed Open valve to full open position. Non-condensable gases in hydronic system Recover non-condensable gases from bleed valve on condenser or at bleed valve of the building condenser water system. Overcharge of refrigeration Recover refrigerant from system while in operation until the first sign of bubbles are shown in the sight glass. Add back refrigerant just until bubbles clear. Condenser water temperature high Check water supply temperature against requirements; if cooling tower is used check spray nozzles on cooling tower. Improper condenser water circulation Use an ample sized cleanable strainer in the condenser water circuit; make certain the strainer is clean to insure full flow of condenser water (strainer must be 60 mesh minimum). It may sometimes be necessary to treat water to prevent formation of deposits. Insufficient water flow through the condenser Check water flow through condenser against design requirements. Fouled condenser brazed plate heat exchanger Clean-in-place heat exchanger as described in IOM (page 31). Defective high pressure switch Replace high pressure switch. Causes and Prevention of Freeze-Ups Possible Cause Remedy Improper charging Charge per ClimaCool data plate information, located on the chiller, following the Superheat and Subcooling procedure described in IOM (page 25). Improper chilled water circulation Use an ample sized cleanable strainer in the chilled water circuit; make certain the strainer is clean to insure full flow and velocity of chilled water (strainer screen must be 60 mesh minimum). It may sometimes be necessary to treat water to prevent formation of deposits. Not draining for winter shutdown When the system is shut down for the winter, remove the drain plugs from the flush ports and drain the cooler. Blow out remaining water with air. Faulty leaving chilled solution temperature Verify sensor calibration using a calibrated thermometer and replace if defective. Wrong freeze-up protection temperature setpoint Verify leaving chilled solution freeze protection temperature setpoint to be set at 8oF above solution freeze point. Note: See page 44 for Troubleshooting for Stainless Steel Strainer ATF Package. ATTENTION To avoid the release of refrigerant into the atmosphere, the refrigerant circuit of this unit must be serviced only by technicians who meet local, state and federal proficiency requirements. All refrigerant discharged from this unit must be recovered WITHOUT EXCEPTION. Technicians must follow industry accepted guidelines and all local, state and federal statues for the recovery and disposal of refrigerants. If a compressor is removed from the unit, system refrigerant circuit oil will remain in the compressor. To avoid leakage of compressor oil, the refrigerant lines of the compressor must be sealed after it is removed. Disconnect power supply (ies) before servicing. Refer servicing to qualified service personnel. Electric shock hazard. May result in injury or death! Unit to be serviced by qualified personnel only. Refrigerant system under pressure. Relieve pressure before using torch. Recover refrigerant and store or dispose of properly. Debrancher avant d’entre- prendre le dépannage de l’appareil. Consulter un réparateur qualifie pour le dépannage. Risque de choc électrique. Résiltat de mai dans dommages ou la mort! Conifer la maintenance à un technicien qualifie. Le systéme frigorifique sous pression. Décomprimer avant d’exposer à la flamme. Récuperer le frigorigene et le stocker ou le détrulre correctement. WARNING/AVERTISSEMENT CAUTION/ATTENTION page 32 page 29

WARRANTY DISCLAIMER It is expressly understood that unless a statement is specifically identified as a warranty, statements made by ClimaCool Corp., an Oklahoma corporation (“CC”), or its representatives, relating to CC’s products, whether oral, written or contained in any quote, sales literature, catalog or any agreement, are not express warranties and do not form a part of the basis of the bargain, but are merely CC’s opinion or commendation of CC’s products. EXCEPT AS SPECIFICALLY SET FORTH HEREIN, THERE IS NO EXPRESS WARRANTY AS TO ANY OF CC’S PRODUCTS. CC MAKES NO WARRANTY AGAINST LATENT DEFECTS. CC MAKES NO WARRANTY OF MERCHANTABILITY OF THE GOODS OR OF THE FITNESS OF THE GOODS FOR ANY PARTICULAR PURPOSE. GRANT OF LIMITED EXPRESS WARRANTY CC warrants CC’s products purchased and retained in the United States of America and Canada to be free from defects in material and workmanship under normal use and maintenance only as follows: FOR MODULAR CHILLERS: (a) All modular chillers built or sold by CC for twelve (12) months from the date of unit start-up or eighteen (18) months from date of shipment (from CC’s warehouse), whichever comes first; and (b) Any repair and replacement parts, which are not supplied under warranty, for ninety (90) days from date of shipment (from CC’s warehouse) and (c) If such extended warranty is purchased, the compressors in all modular chillers built or sold by CC shall extend for sixty (60) months from the date of shipment (from CC’s warehouse). FOR ROOF TOP UNITS: (a) All roof top units built or sold by CC for twelve (12) months from the date of unit start-up or eighteen (18) months from date of shipment (from CC’s warehouse), whichever comes first; (b) All compressors supplied by CC with CC’s roof top units for sixty (60) months from date of shipment (from CC’s warehouse); (c) All gas fired stainless steel heat exchangers supplied by CC with CC’s roof top units for ten (10) years from date of shipment (from CC’s warehouse); and (d) Any repair and replacement parts, which are not supplied under warranty, for ninety (90) days from date of shipment (from CC’s warehouse). All parts must be returned to CC’s warehouse in Oklahoma City, Oklahoma, freight prepaid, no later than sixty (60) days after the date of the failure of the part. If CC determines the part to be defective and within CC’s Limited Express Warranty, CC shall, when such part has been either replaced or repaired, return such to a CC recognized dealer, contractor or service organization, F.O.B. CC’s warehouse, Oklahoma City, Oklahoma, freight prepaid. The warranty on any part repaired or replaced under warranty expires at the end of the original warranty period. This warranty does not cover and does not apply to: (1) Fuses, refrigerant, fluids, oil; (2) Products relocated after initial installation; (3) Any portion or component of the system that is not supplied by CC, regardless of the cause of the failure of such portion or component; (4) Products on which the units identification tags or labels have been removed or defaced; (5) Products on which payment to CC is or has been in default; (6) Products which have defects or damage which result from improper installation, wiring, electrical imbalance characteristics or maintenance (including, without limitation, defects or damages caused by voltage surges, inadequate voltage conditions, phase imbalance, any form of electrical disturbances, inadequate or improper electrical circuit installation or protection, failure to perform common maintenance, etc.); or are caused by accident, misuse or abuse, fire, flood, alteration or misapplication of the product; (7) Products which have defects or damage which result from a contaminated or corrosive air or liquid supply, operation at abnormal temperatures, or unauthorized opening of refrigerant circuit; (8) Products subjected to corrosion or abrasion or chemicals; (9) Mold, fungus or bacteria damage; (10) Products manufactured or supplied by others; (11) Products which have been subjected to misuse, negligence or accidents; (12) Products which have been operated in a manner contrary to CC’s printed instructions; (13) Products which have defects, damage or insufficient performance as a result of insufficient or incorrect system design or the improper application of CC’s products; (14) Products which have defects or damages due to freezing of the water supply, an inadequate or interrupted water supply, corrosives or abrasives in the water supply, or improper or inadequate filtration or treatment of the water or air supply: (15) Products which are defects caused by overfiring, use of incorrect fuel, or improper burn or control adjustments; or (16) Products which have incomplete or inadequate combustion. CC is not responsible for: (1) The costs of any fluids, refrigerant or other system components, or the associated labor to repair or replace the same, which is incurred as a result of a defective part covered by CC’s Limited Express Warranty; (2) The costs of labor, refrigerant, materials or service incurred in removal of the defective part, or in obtaining and replacing the new or repaired part; or, (3) Transportation costs of the defective part from the installation site to CC or the return of any part not covered by CC’s Limited Express Warranty. Limitation: This Limited Express Warranty is given in lieu of all other warranties. If, notwithstanding the disclaimers contained herein, it is determined that other warranties exist, any such warranty, including without limitation, any express warranties or any implied warranties of fitness for any particular purpose and merchantability, shall be limited to the duration of the Limited Express Warranty. LIMITATION OF REMEDIES In the event of a breach of this Limited Express Warranty, CC will only be obligated at CC’s option to repair the failed part or module or to furnish a new or rebuilt part or module in exchange for the part or module which has failed. If, after written notice to CC’s Head Office in Oklahoma City, Oklahoma of each defect, malfunction or other failure and a reasonable number of attempts by CC to correct the defect, malfunction or other failure and the remedy fails of its essential purpose, CC shall refund the purchase price paid to CC in exchange for the return of the sold good(s). Said refund shall be the maximum liability of CC. THIS REMEDY IS THE SOLE AND EXCLUSIVE REMEDY AGAINST CC FOR BREACH OF CONTRACT, FOR THE BREACH OF ANY WARRANTY OR FOR CC’S OWN NEGLIGENCE OR IN STRICT LIABILITY. LIMITATION OF LIABILITY CC shall have no liability for any damages if CC’s performance is delayed for any reason or is prevented to any extent by any event such as, but not limited to any, war, civil unrest, government restrictions or restraints, strikes, or work stoppages, fire, flood, accident, allocation, shortages of transportation, fuel, material or labor, acts of God or any other reason beyond the sole control of CC. CC EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGE IN CONTRACT, FOR BREACH OF ANY EXPRESS OR IMPLIED WARRANTY, OR IN TORT, WHETHER FOR CC’S OWN NEGLIGENCE OR AS STRICT LIABILITY. OBTAINING WARRANTY PERFORMANCE Normally, the contractor or service organization who installed the products will provide warranty performance for the owner. Should the installer be unavailable, contact any CC recognized contractor or service organization. If assistance is required in obtaining warranty performance, write: ClimaCool Corp.  P.O. Box 2055  Oklahoma City, Oklahoma 73101  (405) 815-3000  e-mail: [email protected] NOTE: Some states or Canadian provinces do not allow limitations on how long an implied warranty lasts, or the limitation or exclusion of consequential or incidental damages, so the foregoing exclusion and limitations may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state and from Canadian province to Canadian province. Please refer to the CC Installation, Operation and Maintenance Manual for operating and maintenance instructions. CLIMACOOL CORPORATION LIMITED EXPRESS WARRANTY/LIMITATION OF REMEDIES AND LIABILITY WITH EXTENDED COMPRESSOR WARRANTY

time for order may be changed without notice and may not be as described herein. Please contact ClimaCool’s Customer Service Department at 405-815-3000 for specific information on the current design and specifications. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely ClimaCool’s opinion or commendation of its products. AHRI Certified™ is a trademark of the Air Conditioning, Heating, and Refrigeration Institute. ‘USGBC®’ and related logo is a trademark owned by the U.S. Green Building Council® and is used with permission. Doc# 97B0064N03 © ClimaCool Corp. 2018 Rev.: 11/18 15 S. Virginia Oklahoma City, OK 73106 Phone: 405-815-3000 Fax: 405-815-3052 www.climacoolcorp.com ®