Trane UniTrane Installation, Operation And Maintenance Instructions

Maintenance UniTrane™ Fan-Coil and Force-Flo™ Air Conditioners 200 to 1,200 cfm Models FC and FF “ZO” and later design sequence Low vertical models FCKB and FCLB “SO” and later design sequence

UNT-SVX07B-EN Warnings, Cautions and Notices Warnings, Cautions and Notices. Note that warnings, cautions and notices appear at appropriate intervals throughout this manual. Warnings are provide to alert installing contractors to potential hazards that could result in personal injury or death. Cautions are designed to alert personnel to hazardous situations that could result in personal injury, while notices indicate a situation that could result in equipment or property-damage-only accidents. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions. Important Environmental Concerns! Scientific research has shown that certain man-made chemicals can affect the earth’s naturally occurring stratospheric ozone layer when released to the atmosphere. In particular, several of the identified chemicals that may affect the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs such as HCFCs and HFCs. Responsible Refrigerant Practices! Trane believes that responsible refrigerant practices are important to the environment, our customers, and the air conditioning industry. All technicians who handle refrigerants must be certified. The Federal Clean Air Act (Section 608) sets forth the requirements for handling, reclaiming, recovering and recycling of certain refrigerants and the equipment that is used in these service procedures. In addition, some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants. Know the applicable laws and follow them. SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury. When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are attached to the equipment. ATTENTION: Warnings, Cautions and Notices appear at appropriate sections throughout this literature. Read these carefully. �WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. �CAUTION: Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. It could also be used to alert against unsafe practices. NOTICE: Indicates a situation that could result in equipment or property-damage only accidents.

�WARNING Personal Protective Equipment (PPE) Required! Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards. • Before installing/servicing this unit, technicians MUST put on all Personal Protective Equipment (PPE) recommended for the work being undertaken. ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE. • When working with or around hazardous chemicals, ALWAYS refer to the appropriate MSDS sheets and OSHA guidelines for information on allowable personal exposure levels, proper respiratory protection and handling recommendations. • If there is a risk of arc or flash, technicians MUST put on all necessary Personal Protective Equipment (PPE) in accordance with NFPA70E for arc/flash protection PRIOR to servicing the unit. Failure to follow recommendations could result in death or serious injury. �WARNING Proper Field Wiring and Grounding Required! All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/ state electrical codes. Failure to follow code could result in death or serious injury. Trademarks Force-Flo, Trane, the Trane logo, and UniTrane are trademarks of Trane in the United States and other countries. All trademarks referenced in this document are the trademarks of their respective owners.

Model Number Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Receiving and Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Jobsite Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Installation Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Service Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Pre-Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Available Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Factory-Installed Piping Packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Vertical Concealed, Model A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Vertical Cabinet, Model B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Horizontal Concealed, Model C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Horizontal Cabinet, Model D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Horizontal Recessed, Model E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Vertical Wall Hung Cabinet, Model F (Force-Flo Units Only) . . . . . . . . . . 23 Vertical Recessed, Model H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Vertical Slope Top, Model J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Low Vertical Concealed, Model K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Low Vertical Cabinet, Model L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Inverted Vertical Cabinet, Model M (Force-Flo Units Only) . . . . . . . . . . . 28 Inverted Vertical Recessed, Model N (Force-Flo Units Only) . . . . . . . . . . 29 Fan-Coil Coil Connections, Vertical Units . . . . . . . . . . . . . . . . . . . . . . . . . 30 Fan-Coil Coil Connections, Horizontal Units . . . . . . . . . . . . . . . . . . . . . . . 30 Force-Flo Coil Connections, Vertical Units . . . . . . . . . . . . . . . . . . . . . . . . 31 Force-Flo Coil Connections, Horizontal Units . . . . . . . . . . . . . . . . . . . . . . 31 Force-Flo Coil Connections, Inverted Units . . . . . . . . . . . . . . . . . . . . . . . . 32 Fresh Air Opening Locations, Horizontal Units—Models C, D, and E . . . 33 Fresh Air Opening Locations, Vertical Units—Models A, B, F, H, J, K, L, M, and N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Wall Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Projection Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Installation—Mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Duct Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Piping Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Installation—General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Installing the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Vertical Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Horizontal Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 Cabinet Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Recessed Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Control Options (Including Factory-Installed) . . . . . . . . . . . . . . . . . . . . . . 52 Installing Wall-Mounted Wired Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Fan Mode Switch Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Wired Zone Sensor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Installing Wall-Mounted Wireless Zone Sensors . . . . . . . . . . . . . . . . . . . . . . 56 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Mounting the Sensor Back Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Replacing the Sensor Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Installation—Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Unit Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Supply Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Electrical Grounding Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Wall-Mounted Control Interconnection Wiring . . . . . . . . . . . . . . . . . . . . . 60 Controls Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Wired Controllers—Communication Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Units with Tracer ZN510 and ZN520 Only . . . . . . . . . . . . . . . . . . . . . . . . . 67 Device Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Recommended Communication Wiring Practices . . . . . . . . . . . . . . . . . . 67 Wireless Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Address Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Observing the Receiver for Readiness to Associate . . . . . . . . . . . . . . . . . 69 Associating the Sensor to the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Testing Signal Strength and Battery Status . . . . . . . . . . . . . . . . . . . . . . . 70 Configuring the Wireless Display Sensor (Model WDS only) . . . . . . . . . 71 Replacing the Sensor Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Sensor Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Wireless Sensor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 Pre-Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Pre-Startup Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Tracer™ ZN510 & ZN520 Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Fan Mode Switch Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Tracer ZN010 & ZN510 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Tracer ZN520 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 Sequence of Operation: Tracer ZN010 and ZN510 . . . . . . . . . . . . . . . . . . . . . 86 Binary Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Tracer ZN520 Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Cooling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Heating Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 Fan Mode Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Periodic Maintenance Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Troubleshooting the Relay (Daughter) Board . . . . . . . . . . . . . . . . . . . . . 113 Troubleshooting Wireless Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115 Troubleshooting Tracer ZN010, ZN510, and ZN520 . . . . . . . . . . . . . . . . 124 Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 CSTI Fan Speed Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 CSTI Non Fan Speed Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Line Voltage Fan Speed Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Tracer ZN010 with Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Tracer ZN510 with Main and Auxiliary Valves . . . . . . . . . . . . . . . . . . . . 130 ZN520 with 2-Stage Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

cabinet heater has a multiple charac- ter model number unique to that par- ticular unit. To determine a unit’s specific options, reference the model number on the unit nameplate on the fan scroll. The unit nameplate also identifies the serial number, sales order number, and installation and operating specifications. Following is a complete description of the fan-coil model number. Each digit in the model number has a corresponding code that identifies specific unit options. Note: Not all options are available on all cabinet styles. Contact your local Trane sales representative for more information. Digits 1, 2 — Unit Type FC = Fan-Coil FF = Force-Flo Digit 3 — Cabinet Type A = Vertical Concealed B = Vertical Cabinet C = Horizontal Concealed D = Horizontal Cabinet E = Horizontal Recessed H = Vertical Recessed J = Vertical Cabinet Slope Top K = Low Vertical Concealed L = Low Vertical Cabinet M = Inverted Vertical Cabinet N = Inverted Vertical Recessed Digit 4 — Development Sequence “B” Digits 5, 6, 7 — Unit Size Digit 8 — Unit Voltage 020 040 080 030 060 100 120 1 = 115/60/1 4 = 230/60/1 2 = 208/60/1 9 = 220–240/50/1 3 = 277/60/1 Digit 9 — Piping System/ Placement A = No piping, RH, No Auxiliary Drain Pan B = No piping, LH, No Auxiliary Drain Pan C = No piping, RH, with Auxiliary Drain Pan D = No piping, LH, with Auxiliary Drain Pan E = No piping, RH, No Auxiliary Drain Pan, Extended End Pocket F = No piping, LH, No Auxiliary Drain Pan, Extended End Pocket G = No piping, RH, with Auxiliary Drain Pan, Extended End Pocket H = No piping, LH, with Auxiliary Drain Pan, Extended End Pocket J = With piping package, RH K = With piping package, LH L = With piping package, RH, Extended End Pocket M = With piping package, LH, Extended End Pocket Digits 10, 11 — Design Sequence Digit 12 — Inlets A = Front Toe Space B = Front Bar Grille C = Front Stamped Louver D = Bottom Stamped Louver E = Bottom Toe Space F = Back Duct Collar G = Back Open Return H = Back Stamped Louver Digit 13 — Fresh Air Damper 0 = None A = Manual, Bottom Opening B = Manual, Back Opening C = Manual, Top Opening D = Auto, 2-Position, Bottom Opening E = Auto, 2-Position, Back Opening F = Auto, 2-Position, Top Opening G = Auto, Economizer, Bottom Opening H = Auto, Economizer, Back Opening J = Auto, Economizer, Top Opening K = No Damper, Bottom Opening L = No Damper, Back Opening M = No Damper, Top Opening Digit 14 — Outlets A = Front Duct Collar B = Front Bar Grille C = Front Stamped Louver D = Front Quad Grille G = Top Quad Grille H = Top Bar Grille J = Top Duct Collar Digit 15 — Color 0 = No Paint (Concealed Units Only) 1 = Deluxe Beige 2 = Soft Dove 3 = Cameo White 4 = Driftwood Grey 5 = Stone Grey 6 = Rose Mauve Digit 16 — Tamperproof Locks/ Leveling Feet 0 = None B = Keylock Access Door C = Keylock Panel and Access Door D = Leveling Feet F = Keylock Access Door with Leveling Feet G = Keylock Panel and Access Door with Leveling Feet Digit 17 — Motor A = Free Discharge B = High Static Digit 18 — Coil A = 2-Row Cooling/Heating B = 3-Row Cooling/Heating C = 4-Row Cooling/Heating D = 2-Row Cooling/1-Row Heating E = 2-Row Cooling/2-Row Heating F = 3-Row Cooling/1-Row Heating G = 2-Row Cooling Only H = 3-Row Cooling Only J = 4-Row Cooling Only K = 2-Row Cooling/Heating with Electric Heat L = 3-Row Cooling/Heating with Electric Heat M = 4-Row Cooling/Heating with Electric Heat P = 2-Row Cooling/Heating with 1-Row Heating Q = 2-Row Cooling/Heating with 2-Row Heating R = 3-Row Cooling/Heating with 1-Row Heating X = 2-Row Cooling Only, Electric Heat Y = 3-Row Cooling Only, Electric Heat Z = 4-Row Cooling Only, Electric Heat Digit 19 — Drain Pan Material 3 = Polymer Drain Pan 4 = Stainless Steel Main Drain Pan Digit 20 — Coil Air Vent A = Automatic Air Vent M = Manual Air Vent Model Number Descriptions

Digits 21, 22, 23 — Electric Heat kW — ( ) = 208 V Derate 000= No Electric Heat 010 = 1.0 kW (0.75 kW) 015 = 1.5 kW (1.1 kW) 020 = 2.0 kW (1.5 kW) 025 = 2.5 kW (1.9 kW) 030 = 3.0 kW (2.3 kW) 040 = 4.0 kW (3.0 kW) 050 = 5.0 kW (3.8 kW) 060 = 6.0 kW (4.5 kW) 070 = 7.0 kW (5.3 kW) 080 = 8.0 kW (6.0 kW) 100 = 10.0 kW Digit 24 — Reheat Coil 0 = None A = Steam Coil B = Hot Water Coil D = High Capacity Hot Water Coil Digit 25 — Disconnect Switch 0 = None D = Disconnect Switch Digit 26 — Filter 0 = None 1 = 1” Throwaway Filter 2 = 1” Throwaway MERV 8 Filter 3 = 1” Throwaway, 1 Extra 4 = 1” Throwaway MERV 8, 1 Extra 5 = 1” Throwaway, 2 Extras 6 = 1” Throwaway MERV 8, 2 Extras 7 = 1” Throwaway, 3 Extras 8 = 1” Throwaway MERV 8, 3 Extras Digit 27 — Main Control Valve 0 = None A = 2-Way, 2-Position, NO (30 psig) B = 3-Way, 2-Position, NO (28 psig) C = 2-Way, 2-Position, NC (30 psig) D = 3-Way, 2-Position, NC (20 psig) E = 2-Way, 2-Position, NO (50 psig) F = 3-Way, 2-Position, NO (28 psig) G = 2-Way, 2-Position, NC (50 psig) H = 3-Way, 2-Position, NC (28 psig) J = 2-Way, Modulating, 0.6 Cv (60 psig) K = 3-Way, Modulating, 0.6 Cv (60 psig) L = 2-Way, Modulating, 1.1 Cv (60 psig) M = 3-Way, Modulating, 1.1 Cv (60 psig) N = 2-Way, Modulating, 2.3 Cv (60 psig) P = 3-Way, Modulating, 2.7 Cv (60 psig) Q = 2-Way, Modulating, 3.3Cv (60 psig) R = 3-Way, Modulating, 3.8 Cv (60 psig) X = Field-supplied, NO Y = Field-supplied, NC Z = Field-supplied 3-Wire Modulating Digit 28 — Auxiliary Control Valve 0 = None A = 2-Way, 2-Position, NO (30 psig) B = 3-Way, 2-Position, NC (28 psig) C = 2-Way, 2-Position, NC (30 psig) D = 3-Way, 2-Position, NC (20 psig) E = 2-Way, 2-Position, NO (50 psig) F = 3-Way, 2-Position, NO (28 psig) G = 2-Way, 2-Position, NC (50 psig) H = 3-Way, 2-Position, NC (28 psig) J = 2-Way, Modulating, 0.6 Cv (60 psig) K = 3-Way, Modulating, 0.6 Cv (60 psig) L = 2-Way, Modulating, 1.1 Cv (60 psig) M = 3-Way, Modulating, 1.1 Cv (60 psig) N = 2-Way, Modulating, 2.3 Cv (60 psig) P = 3-Way, Modulating, 2.7 Cv (60 psig) Q = 2-Way, Modulating, 3.3Cv (60 psig) R = 3-Way, Modulating, 3.8 Cv (60 psig) X = Field-supplied, NO Y = Field-supplied, NC Z = Field-supplied 3-Wire Modulating Digit 29 — Piping Packages 0 = None A = Basic Ball Valve Supply and Return B = Basic Ball Valve Supply/Manual Circuit Setter C = Basic Ball Valve Supply and Return with Auto Circuit Setter D = Deluxe Ball Valve Supply and Return E = Deluxe Ball Valve Supply/Manual Circuit Setter F = Deluxe Ball Valve Supply and Return with Auto Circuit Setter Digit 30 — Control Type A = Fan Mode Switch E = Tracer ZN010 F = Tracer ZN510 G = Tracer ZN520 H = Customer Supplied Thermostat Interface (CSTI) Digit 31 — Control Option D = Unit-Mounted Fan Mode Switch K = Wall-Mounted Fan Mode Switch V = Unit-Mounted Fan Speed Switch w/Setpoint Dial Zone Sensor W = Wall-Mounted Fan Speed Switch w/Setpoint Dial Zone Sensor X = Unit-Mounted Fan Speed Switch w/Wall-Mounted Setpoint Dial Zone Sensor Y = Unit-Mounted Fan Speed Switch & Wall-Mounted Setpoint Dial w/Comm. Z = Unit-Mounted Fan Speed Switch, On/Cancel, Setpoint Dial w/ Comm. 1 = Wall-Mounted On/Cancel w/ Comm. 2 = Wall-Mounted Fan Speed Switch, Setpoint Dial, On/Cancel w/ Comm. 0 = Without Control Option 3 = Unit-Mounted Low Voltage Fan Speed Switch (Off /Hi /Med /Low) 4 = Wall-Mounted Digital Zone Sensor (OALMH, Setpoint, On/Cancel, Comm Jack) 5 = Wall-Mounted Digital Zone Sensor (On/Cancel, Comm Jack) 6 = Wireless Zone Sensor 7 = Wireless Display Sensor, Unit- Mounted Receiver Digit 32 - IAQ Options 0 = Without IAQ Options 1 = Dehumidification 4 = Dehumidification w/ Sensor Digits 33, 34 —Future Control Functions Digit 35 — Control Function #3 0 = None 2 = Condensate Overflow Detection

Digit 36 — Control Function #4 0 = None 2 = Low Temperature Detection Digits 37, 38 — Future Control Functions Digit 39 — Projection Panels and Falsebacks 0 = None A = 5/8” Standard Recessed Panel (Vertical Recessed Units Only) B = 2” Projection Panel C = 2.5” Projection Panel D = 3” Projection Panel E = 3.5” Projection Panel F = 4” Projection Panel G = 4.5” Projection Panel H = 5” Projection Panel J = 5.5” Projection Panel K = 6” Projection Panel L = 2”Falseback M = 3” Falseback N = 4” Falseback P = 5” Falseback Q = 6” Falseback R = 7” Falseback T = 8” Falseback Digit 40 — Main Autoflow Gpm Digit 41 — Auxiliary Autoflow Gpm Digit 42 — Subbases 0 = None A = 2” Subbase B = 3” Subbase C = 4” Subbase D = 5” Subbase E = 6” Subbase F = 7” Subbase Digit 43 — Recessed Flange 0 = None A = Recessed Flange 0 = None H = 3.5 A = 0.5 J = 4.0 B = 0.75 K = 4.5 C = 1.0 L = 5.0 D = 1.5 M = 6.0 E = 2.0 N = 7.0 F = 2.5 P = 8.0 G = 3.0 0 = None H = 3.5 A = 0.5 J = 4.0 B = 0.75 K = 4.5 C = 1.0 L = 5.0 D = 1.5 M = 6.0 E = 2.0 N = 7.0 F = 2.5 P = 8.0 G = 3.0 Digit 44 — Wall Boxes 0 = None A = Anodized Wall Box

load capabilities of 200 to 1200 cfm. See Figure 1 for unit components. Fan-coil units are available as two-pipe, with or without electric heat (one hydronic circuit) or four-pipe (two hydronic circuits). Force-Flo units feature two-pipe hydronic, electric heat only, or steam only. Also, these units feature a variety of factory mounted piping packages. Units with the three-speed fan switch only, are available with the switch mounted on the unit, or shipped separately, to be mounted in the occupied space. The unit mounted three-speed switch option can be ordered with a low voltage (24 vols AC) transformer and three fan speed relays. The three-speed switch option, which ships separately, comes with a low voltage (24 volt AC) transformer and three fan speed relays. The Tracer ZN010, ZN510, and ZN520 controllers are included inside the units control box assembly. These controllers utilize analog signals from a unit-mounted control device or from a control device mounted in the occupied space. The controls interface option, includes a 24 volt AC transformer, and an interface terminal board. Controls provided by an external source can be tied into the interface terminal board utilizing 1/4” female spade connectors. Figure 1. UniTrane fan-coil unit components (vertical cabinet model is shown) Factory assembled, installed and tested piping package with IAQ drain pan to collect condensate Two, three, or four-row coils Quiet operation Smaller unit footprint Factory installed and tested controls Removable, noncorrosive, positively-sloped drain pan that’s easy to clean 16-gage steel construction Easy to remove fan assembly Easy filter access without front panel removal Damper allows up to 100% fresh air Cleanable closed- cell insulation (non- fiberglass)

Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Receiving and Handling Upon delivery, inspect all components for possible shipping damage. See “Receiving Checklist” (below) for detailed instructions. Trane recommends leaving units and accessories in their shipping packages/skids for protection and ease of handling until installation. Shipping Package UniTrane fan-coil and Force-Flo cabinet heaters ship in individual cartons for handling and storage ease. Each carton has tagging information such as the model number, sales order number, serial number, unit size, piping connections, and unit style to help properly locate the unit in the floor plan. If specified, the unit will ship with tagging designated by the customer. Receiving Checklist Complete the following checklist immediately after receiving unit shipment to detect possible shipping damage. Jobsite Storage This unit is intended for indoor use only. Store the unit indoors to protect the unit from damage due to the elements. If indoor storage is not possible, make the following provisions for outdoor storage: 1. Place the unit(s) on a dry surface or raised off the ground to assure adequate air circulation beneath unit and to assure that no portion of the unit contacts standing water at any time. � Inspect individual cartons before accepting. Check for rattles, bent carton corners, or other visible indications of shipping damage. � If a unit appears damaged, inspect it immediately before accepting the shipment. Manually rotate the fan wheel to ensure it turns freely. Make specific notations concerning the damage on the freight bill. Do not refuse delivery. � Inspect the unit for concealed damage before it is stored and as soon as possible after delivery. Report concealed damage to the freight line within the allotted time after delivery. Check with the carrier for their allotted time to submit a claim. � Do not move damaged material from the receiving location. It is the receiver’s responsibility to provide reasonable evidence that concealed damage did not occur after delivery. � Do not continue unpacking the shipment if it appears damaged. Retain all internal packing, cartons, and crate. Take photos of damaged material. � Notify the carrier’s terminal of the damage immediately by phone and mail. Request an immediate joint inspection of the damage by the carrier and consignee. � Notify your Trane representative of the damage and arrange for repair. Have the carrier inspect the damage before making any repairs to the unit. � Compare the electrical data on the unit nameplate with the ordering and shipping information to verify the correct unit is received.

cause excessive moisture condensation and equipment damage. Installation Preparation Before installing the unit, consider the following unit location recommendations to ensure proper unit operation. 1. Clearances: Allow adequate service and code clearances as recommended in “Service Access” (the next section). Position the unit and skid assembly in its final location. 2. Structural support: Ensure the structural support is strong enough to adequately support the unit. The installer is responsible for supply support rods for installation of ceiling units. 3. Level: Verify the floor or foundation is level. Shim or repair as necessary. To ensure proper unit operation, install the unit level (zero tolerance) in both horizontal axes. Failure to level the unit properly can result in condensate management problems, such as standing water inside the unit. 4. Condensate line & piping: Consider coil piping and condensate drain requirements. Verify condensate line is continuously pitched 1 inch per 10 feet of condensate line run to adequately drain condensate. 5. Wall & ceiling openings: Vertical recessed/concealed units require wall/ceiling openings. Refer to submittal for specific dimensions before attempting to install. Horizontal recessed/concealed units must meet the requirements of the National Fire Protection Association (NFPA) Standard 90A or 90B concerning the use of concealed ceiling spaces as return air plenums. Refer to the submittal for specific dimensions of ceiling openings. 6. Exterior: Touch up painted panels if necessary. If panels need paint, sanding is not necessary. However, clean the surface of any oil, grease, or dirt residue so the paint will adhere. Purchase factory approved touch up epoxy paint from your local Trane Service Parts Center and apply. Service Access Service access is available from the front on vertical units and from the bottom on horizontal units. Cabinet and recessed units have removable front or bottom panels to allow access into the unit. See Figure 2, p. 13 for recommended service and operating clearances.

(airflow discharges from the front). The control panel is always on the end opposite the piping. The fan board assembly and main drain pan are easily removable for cleaning. See “Maintenance,” p. 101 for more details on servicing. Pre-Installation Checklist Complete the following checklist before beginning unit installation. Figure 2. Recommended service clearances model B, vertical cabinet model L, low vertical cabinet 12" both sides 24" 3" 36" model A, vertical concealed model K, low vertical concealed model H, vertical recessed 8.5" both sides 12" both sides 8.5" both sides 28" 28" model D, horizontal cabinet model C, horizontal concealed model E, horizontal recessed 24" front discharge � Verify the unit size and tagging with the unit nameplate. � Make certain the floor or foundation is level, solid, and sufficient to support the unit and accessory weights. See “Dimensions and Weights,” p. 14. Level or repair the floor before positioning the unit if necessary. � Allow minimum recommended clearances for routine maintenance and service. Refer to unit submittals for dimensions. � Allow one and one half fan diameters above the unit before the discharge ductwork makes any turns.

Table 1. Fan-coil component data Unit Size 02 03 04 06 08 10 12 Coil Data Face Area — ft2 (cm2) 0.8 (743) 0.8 (743) 1.1 (1020) 1.6 (1490) 2.1 (1950) 3.2 (2970) 3.2 (2970) LxDxH — in. (cm) 2-Row 15 x 1.7 x 8 15 x 1.7 x 8 20 x 1.7 x 8 29.5 x 1.7 x 8 38 x 1.7 x 8 57 x 1.7 x 8 57 x 1.7 x 8 (38 x 4 x 20) (38 x 4 x 20) (51 x 4 x 20) (75 x 4 x 20) (97 x 4 x 20) (145 x 4 x 20) (145 x 4 x 20) 3-Row 15 x 2.6 x 8 15 x 2.6 x 8 20 x 2.6 x 8 29.5 x 2.6 x 8 38 x 2.6 x 8 57 x 2.6 x 8 57 x 2.6 x 8 (38 x 7 x 20) (38 x 7 x 20) (51 x 7 x 20) (75 x 7 x 20) (97 x 7 x 20) (145 x 7 x 20) (145 x 7 x 20) 4-Row 15 x 3.5 x 8 15 x 3.5 x 8 20 x 3.5 x 8 29.5 x 3.5 x 8 38 x 3.5 x 8 57 x 3.5 x 8 57 x 3.5 x 8 (38 x 9 x 20) (38 x 9 x 20) (51 x 9 x 20) (75 x 9 x 20) (97 x 9 x 20) (145 x 9 x 20) (145 x 9 x 20) Volume — gal (L) 1-Row (Heat) 0.06 (0.23) 0.06 (0.23) 0.08 (0.30) 0.11 (0.42) 0.14 (0.53) 0.21 (0.79) 0.21 (0.79) 2-Row 0.12 (0.45) 0.12 (0.45) 0.15 (0.57) 0.22 (0.83) 0.28 (1.06) 0.42 (1.59) 0.42 (1.59) 3-Row 0.18 (0.68) 0.18 (0.68) 0.23 (0.87) 0.33 (1.25) 0.42 (1.59) 0.62 (2.35) 0.62 (2.35) 4-Row 0.24 (0.91) 0.24 (0.91) 0.30 (1.14) 0.44 (1.67) 0.56 (2.12) 0.83 (3.14) 0.83 (3.14) Fins/ft (cm) 2-Row 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 3-Row 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 4-Row 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) Reheat Coil Data (1-Row), Standard or High-Capacity(a) (a) Standard and high-capacity reheat coils share the same component data except that standard capacity reheat coils have 48 fins/ft (1.6 fins/cm) while high-capacity reheat coils have 144 fins/ft (4.7 fins/cm). Hot Water or Steam Face Area — ft2 (cm2) 0.6 0.6 0.8 1.2 1.6 2.4 2.4 (557) (557) (743) (1120) (1490) (2230) (2230) L x D x H — in. (cm) 15 x 1.5 x 6 15 x 1.5 x 6 20 x 1.5 x 6 29.5 x 1.5 x 6 38 x 1.5 x 6 57 x 1.5 x 6 57 x 1.5 x 6 (38 x 4 x 15) (38 x 4 x 15) (51 x 4 x 15) (75 x 4 x 15) (97 x 4 x 15) (145 x 4 x 15) (145 x 4 x 15) Volume — gal (L) 0.12 (0.45) 0.12 (0.45) 0.15 (0.57) 0.22 (0.83) 0.28 (1.06) 0.42 (1.59) 0.42 (1.59) Standard Capacity(a) Fins/ft (cm) 48 (1.6) 48 (1.6) 48 (1.6) 48 (1.6) 48 (1.6) 48 (1.6) 48 (1.6) High-Capacity(a) Fins/ft (cm) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) 144 (4.7) Fan/Motor Data Fan Quantity 1 1 1 2 2 3 3 Size — Dia” x Width” (cm) 6.31 x 4 6.31 x 6.5 6.31 x 7.5 6.31 x 6.5 6.31 x 7.5 (1) 6.31 x 7.5 6.31 x 7.5 (16 x 10) (16 x 17) (16 x 19) (16 x 17) (16 x 19) (16 x 19) (16 x 19) Size — Dia” x Width” (cm) (2) 6.31 x 6.5 (16 x 6.5) Motor Quantity 1 1 1 1 1 2 2 Filter Data 1” (cm) TA and Pl. Media Quantity 1 1 1 1 1 1 1 Size — in. (cm) 8-7/8 x 19-1/8 8-7/8 x 19-1/8 8-7/8 x 24-1/8 8-7/8 x 33-5/8 8-7/8 x 42-1/8 8-7/8 x 61-1/8 8-7/8 x 61-1/8 (23 x 49) (23 x 49) (23 x 61) (23 x 85) (23 x 107) (23 x 155) (23 x 155) 1” Fresh Air Filter (only on cabinet styles D, E, and H with bottom return and fresh air opening) Quantity 1 1 1 1 1 1 1 Size — in. (cm) 5-1/2 x 19-1/8 5-1/2 x 19-1/8 5-1/2 x 24-1/8 5-1/2 x 33-5/8 5-/2 x 42-1/8 5-1/2 x 61-1/8 5-1/2 x 61-1/8 (14 x 49) (14 x 49) (14 x 61) (14 x 85) (14 x 107) (14 x 156) (14 x 156)

Table 2. Low vertical fan-coil component data Unit Size 03 04 06 Coil Data Face Area — ft2 (cm2) 1.1 (1020) 1.6 (1490) 2.1 (1950) L x D x H — in. (cm) 2-Row 20 x 1.7 x 8 (51 x 4 x 20) 29.5 x 1.7 x 8 (75 x 4 x 20) 38 x 1.7 x 8 (97 x 4 x 20) 3-Row 20 x 2.6 x 8 (51 x 7 x 20) 29.5 x 2.6 x 8 (75 x 7 x 20) 38 x 2.6 x 8 (97 x 7 x 20) Volume — gal (L) 1-Row (Heat) 0.08 (0.30) 0.11 (0.42) 0.14 (0.53) 2-Row 0.15 (0.57) 0.22 (0.83) 0.28 (1.06) 3-Row 0.23 (0.87) 0.33 (1.25) 0.42 (1.59) Fins/ft 2-Row 144 (4.7) 144 (4.7) 144 (4.7) 3-Row 144 (4.7) 144 (4.7) 144 (4.7) Fan/Motor Data Fan Quantity 1 1 1 Size — Dia”x Width” (cm) 5 x 23 (13 x 59) 5 x 32 (13 x 83) 5 x 41 (13 x 105) Motor Quantity 1 1 1 Filter Data 1” (2.5 cm) TA Quantity 1 1 1 Size — in. (cm) 8-7/8 x 24-1/8 (23 x 61) 8-7/8 x 33-5/8 (23 x 85) 8-7/8 x 42-1/8 (23 x 107)

Available Models Model A: Vertical Concealed Model B: Vertical Short Model C: Horizontal Concealed Model D: Horizontal Cabinet Model E: Horizontal Recessed Model F: Wall Hung Cabinet (Force-Flo units only) Model L: Low Vertical Concealed Model K: Low Vertical Cabinet Model H: Vertical Recessed Model J: Slope-Top Cabinet Model M: Inverted Vertical Cabinet (Force-Flo units only) Model N: Inverted Vertical Recessed (Force-Flo units only)

Factory-Installed Piping Packages Note: This figure shows piping package components and basic arrangement. It is not an accurate picturial of what factory-installed piping packages look like. Auto Circuit Setter (C)

Vertical Concealed, Model A Vertical Concealed Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 32-11/16” 37-11/16” 47-3/16” 55-11/16” 74-11/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 22-13/16” 27-13/16” 37-5/16” 45-13/16” 64-13/16” D 17-5/16” 22-5/16” 31-13/16” 40-5/16” 59-5/16” E 19-5/16” 24-5/16” 33-13/16” 42-5/16” 61-5/16” Operating Weight 81 109 139 147 200 Shipping Weight 68 96 123 131 182 Notes: 1. Coil connections are always on the drain pan side and opposite the control box. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Vertical Cabinet, Model B Vertical Cabinet Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 33-5/16” 38-5/16” 47-13/16” 56-5/16” 75-5/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 7-5/8” 7-1/8” 8-7/8” 7-1/8” 7-5/8” D 18” 24” 30” 42” 60” E 19-5/16” 24-5/16” 33-13/16” 42-5/16” 61-5/16” F 41-5/16” 46-5/16” 55-3/16” 64-5/16” 83-5/16” Operating Weight 97 125 155 164 218 Shipping Weight 84 112 139 148 200 Notes: 1. Coil connections are always on the drain pan side and opposite the control box and unit control. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Horizontal Concealed, Model C Horizontal Concealed Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 32-11/16” 37-11/16” 47-3/16” 55-11/16” 74-11/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 22-13/16” 27-13/16” 37-5/16” 45-13/16” 64-13/16” D 19-3/8” 24-3/8” 33-7/8” 42-3/8” 61-3/8” E 18-1/8” 23-1/8” 32-5/8” 41-1/8” 60-1/8” F 19-5/16” 24-5/16” 33-13/16” 43-5/16” 61-5/16” Operating Weight 81 109 139 147 200 Shipping Weight 68 96 123 131 182 Notes: 1. Coil connections are always on the drain pan side and opposite the control box. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 33 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Horizontal Cabinet, Model D Horizontal Cabinet Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 33-5/16” 38-5/16” 47-3/16” 56-5/16” 75-5/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 7-5/8” 7-1/8” 8-7/8” 7-1/8” 7-5/8” D 18” 24” 30” 42” 60” E 17-1/4” 22-1/4” 31-3/4” 40-1/4” 59-1/4” F 41-5/16” 46-5/16” 55-3/16” 64-5/16” 83-5/16” G 8-5/8” 8-1/8” 9-7/8” 8-1/8” 8-5/8” H 16” 22” 28” 40” 58” J 19-3/4” 23-3/4” 31-3/4” 39-3/4” 59-3/4” Operating Weight 97 125 155 164 218 Shipping Weight 84 112 139 148 200 Notes: 1. Coil connections are always on the drain pan side and opposite the control box. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 33 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Horizontal Recessed, Model E Horizontal Recessed Unit Dimensions Unit Size 02–03 04 06 08 10–12 A 35-13/16” 40-13/16” 50-5/16” 48-13/16” 77-13/16” B 21-5/16” 262-5/16” 35-13/16” 44-5/16” 63-5/16” C 22-13/16” 273-13/16” 37-5/16” 45-13/16” 64-13/16” D 19-3/8” 24-3/8” 33-7/8” 42-3/8” 61-3/8” E 18-1/8” 23-1/8” 32-5/8” 41-1/8” 60-1/8” F 32-7/16” 37-7/16” 46-15/16” 55-7/16” 74-7/16” G 34-5/16” 39-5/16” 48-13/16” 57-5/16” 76-5/16” H 19-3/4” 23-3/4” 31-3/4” 39-3/4” 59-3/4” Operating Weight 78 88 128 139 253 Shipping Weight 68 78 118 129 243 Notes: 1. Coil connections are always on the drain pan side. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 33 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal. 6. Side View, Inlet option view gives dimensions for the telescoping panel.

Vertical Wall Hung Cabinet, Model F (Force-Flo Units Only) Vertical Wall Hung Cabinet Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 33-5/16” 38-5/16” 47-13/16” 56-5/16” 75-5/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 7-5/8” 7-1/8” 8-7/8” 7-1/8” 7-5/8” D 18” 24” 30” 42” 60” E 19-5/16” 24-5/16” 33-13/16” 42-5/16” 61-5/16” F 19-3/4” 23-3/4” 31-3/4” 39-3/4” 59-3/4” Operating Weight 97 125 155 164 218 Shipping Weight 84 112 139 148 200 Notes: 1. Coil connections are always opposite the control box side. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings.

Vertical Recessed, Model H Vertical Recessed Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 32-11/16” 37-11/16” 47-3/16” 55-11/16” 74-11/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 22-13/16” 27-13/16” 37-5/16” 45-13/16” 64-13/16” D 17-5/16” 22-5/16” 31-13/16” 40-5/16” 59-5/16” E 47” 51” 63” 65-1/2” 89-1/2” F 30” 30” 30” 33-1/2” 33-1/2” G 2-3/8” 2-3/8” 2-3/8” 4-1/8” 4-1/8” H 42” 48” 57” 63” 87” J 26-1/2” 26-1/2” 26-1/2” 27-1/2” 27-1/2” Operating Weight 78 88 128 139 253 Shipping Weight 68 78 118 129 243 Notes: 1. Coil connections are always on the drain pan side and opposite the control box. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Vertical Slope Top, Model J Vertical Slope Top Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 33-5/16” 38-5/16” 47-13/16” 56-5/16” 75-5/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 7-5/8” 7-1/8” 8-7/8” 7-1/8” 7-5/8” D 18” 24” 30” 42” 60” E 19-5/16” 24-5/16” 33-13/16” 42-5/16” 61-5/16” F 41-5/16” 46-5/16” 55-13/16” 64-5/16” 83-5/16” Operating Weight 97 125 155 164 218 Shipping Weight 84 112 139 148 200 Notes: 1. Coil connections are always on the drain pan side and opposite the control box and unit control. 2. Coil connections are 5/8” O.D. sweat. See p. 30 and p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Low Vertical Concealed, Model K 12-9/16" 2-11/16" 10-11/16" 1-13/16" 1-1/8" 1-13/16" 3-1/4" 6-7/16" 7-1/4" 3-9/16" 13-1/4" 14-1/4" 1-5/16" 14" 14-1/2" 1-15/16" 13-1/2" 9-5/16" 3-3/8" 2-9/16" 1-1/16" 2-3/8" 12-1/4" 12-1/2" 1-1/16" 6-1/4" Low Vertical Concealed Unit Dimensions (in.) and Weights (lb) Unit Size 03 04 06 A 41-7/16” 50-15/16” 59-7/16” B 26-1/4” 35-3/4” 44-1/4” C 27-15/16” 36-13/16” 45-15/16” D 22-5/16” 31-13/16” 40-5/16” E 24-1/4” 339-3/4” 42-1/4” Operating Weight 109 139 147 Shipping Weight 96 123 131 Notes: 1. Coil connections are always on the drain pan side and opposite the control box. 2. Coil connections are 5/8” O.D. sweat. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Low Vertical Cabinet, Model L 10-15/16" 4-7/16" 8-1/2" 10-15/16" 2-3/8" 12-1/4" 12-1/2" 3-7/8" 7-1/2" 9-13/16" 2-11/16" 1-13/16" 1-13/16" 3-1/4" 6-7/16" 11-5/16" 13-3/16" 1-5/16" 13-1/2" 1-15/16" 14-1/2" 11-5/16" 1-1/8" 3-1/16" Low Vertical Cabinet Unit Dimensions (in.) and Weights (lb) Unit Size 03 04 06 A 46-15/16” 56-7/16” 64-15/16” B 26-1/4” 35-3/4” 44-1/4” C 11-7/16” 13-5/16” 11-7/16” D 24” 30” 42” E 24-1/4” 33-3/4” 42-1/4” Operating Weight 125 155 164 Shipping Weight 112 139 148 Notes: 1. Coil connections are always on the drain pan side and opposite the control box. 2. Coil connections are 5/8” O.D. sweat. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings. 5. Serviceability for some components within this unit may require panel or drain pan removal.

Inverted Vertical Cabinet, Model M (Force-Flo Units Only) Inverted Vertical Cabinet Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 33-5/16” 38-5/16” 47-13/16” 56-5/16” 75-5/16” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 7-5/8” 7-1/8” 8-7/8” 7-1/8” 7-5/8” D 18” 24” 30” 42” 60” E 19-5/16” 24-5/16” 33-13/16” 42-5/16” 61-5/16” F 19-3/4” 23-3/4” 31-3/4” 39-3/4” 59-3/4” Operating Weight 97 125 155 164 218 Shipping Weight 84 112 139 148 200 Notes: 1. Coil connections are always opposite the control box side. 2. Coil connections are 5/8” O.D. sweat. See p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings.

Inverted Vertical Recessed, Model N (Force-Flo Units Only) Inverted Vertical Recessed Unit Dimensions (in.) and Weights (lb) Unit Size 02–03 04 06 08 10–12 A 27-7/8” 32-7/8” 42-3/8” 50-7/8” 69-7/8” B 21-5/16” 26-5/16” 35-13/16” 44-5/16” 63-5/16” C 22-13/16” 27-13/16” 37-5/16” 45-13/16” 64-13/16” D 2-3/8” 2-3/8” 2-3/8” 4-1/8” 4-1/8” E 47” 51” 63” 65-1/2” 89-1/2” F 30” 30” 30” 33-1/2” 33-1/2” G 26-1/2” 26-1/2” 26-1/2” 27-1/2” 27-1/2” H 42” 48” 57” 63” 87” Operating Weight 78 88 128 139 253 Shipping Weight 68 78 118 129 243 Notes: 1. Coil connections are always opposite the control box side. 2. Coil connections are 5/8” O.D. sweat. See p. 31 for locations. 3. All duct collar dimensions are to the outside of the collar. 4. See p. 34 for dimensions for outside air openings.

Fan-Coil Coil Connections, Vertical Units Fan-Coil Coil Connections, Horizontal Units

Force-Flo Coil Connections, Vertical Units Force-Flo Coil Connections, Horizontal Units

Fresh Air Opening Locations, Horizontal Units—Models C, D, and E Fresh air opening dimensions, horizontal units Unit Size 02–03 04 06 08 10–12 A 1’ 6” 1’ 11” 2’ 8-1/2” 3’ 5” 5’ 0” B 1’ 9-5/16” 2’ 2-5/16” 2’ 11-13/16” 3’ 8-5/16” 5’ 3-5/16”

Fresh Air Opening Locations, Vertical Units—Models A, B, F, H, J, K, L, M, and N Fresh air opening dimensions, vertical units Unit Size 02–03 04 06 08 10–12 A 1’ 6” 1’ 11” 2’ 8-1/2” 3’ 5” 5’ 0” B 1’ 9-5/16” 2’ 2-5/16” 2’ 11-13/16” 3’ 8-5/16” 5’ 3-5/16”

Wall Box Wall box dimensions Unit Size, Ref. only Dimensions A x B Internal Supports 02–03 24-3/8 x 4- 3/4 1 04 24-3/8 x 7-1/2 1 06 33-1/8 x 7-1/2 2 08 37-1/2 x 7-1/2 3 10–12 58-1/4 x 7-1/2 4 1/2” 1-3/8” 1/8” 4” Continuous Mortar Ribs Top and Bottom Clearance for Drainage Woven Aluminum Insect Screen 1/8” 1/8” 1/2” 3/4” Additional Internal Supports Equally Spaced Not to Exceed 12” O.C. Continuous Drip Lip Top and Bottom 5/8”

Projection Panel Projection panel dimensions Projection panel, all unit sizes Unit Size 02–03 04 06 08 10–12 A 3’ 11” 4’ 3” 5’ 3” 5’ 5-1/2” 7’ 5-1/2” B 2’ 6” 2’ 6” 2’ 6” 2’ 9-1/2” 2’ 9-1/2” C 2” 2-1/2” 3” 3-1/2” 4” 4-1/2” 5” 5-1/2” 6” 2” D 1-1/8” 1-5/8” 2-1/8” 2-5/8” 3-1/8” 3-5/8” 4-1/8” 4-5/8” 5-1/8” 1-1/8” E 8-5/8” 8-1/8” 7-5/8” 7-1/8” 6-5/8” 6-1/8” 5-5/8” 5-1/8” 4-5/8” 8-5/8” Unit to Wall—Top View Front View ISO Rear View ISO

of Air Conditioning and Ventilating Systems (NFPA 90A and 90B). Install all air ducts according to the National Fire Protection Association standards for the “Installation of Air Conditioning and Ventilation Systems other than Residence Type (NFPA 90A) and Residence Type Warm Air Heating and Air Conditioning Systems (NFPA 90B). �WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. The unit’s airflow configuration varies dependent on the model and options ordered. A one-inch duct collar is provided on units with a ducted return and/or discharge to attach ductwork to the unit. Trane recommends using galvanized sheet metal ductwork with fan-coil and cabinet heater units. Slide the sheetmetal duct over the duct collar flange of the unit, seal the joint and fasten with sheetmetal screws. Note: Do not run screws through the removable front panel on concealed units. Ductwork Recommendations Follow the general recommendations listed below when installing ductwork for the unit. 1. Discharge ductwork should run in a straight line, unchanged in size or direction, for a minimum equivalent distance of three fan diameters from the unit (approximately 20 inches). 2. When making duct turns and transitions avoid sharp turns and use proportional splits, turning vanes, and air scoops when necessary. 3. When possible, construct, and orient supply ductwork turns in the same direction as the fan rotation. Piping Considerations Hydronic Coil Piping Before installing field piping to the coil, consider the following . • All coil connections are 5/8-inch O.D. (or 1/2-inch nominal) female copper connections. • The supply and return piping should not interfere with the auxiliary drain pan or condensate line. See “Connecting the Condensate Drain” section for more detailed information. • The installer must provide adequate piping system filtration and water treatment. • Exterior condensate may be an issue (fan-coils only) if field piping does not have a control valve. Refer to the supply and return header locations in the “Dimensions and Weights” section. Note: When using a field supplied piping package in a fan-coil unit, allow sufficient room to install the auxiliary drain pan. In addition, piping package must not extend over edges of auxiliary drain pan. Connecting Field Piping to Coil 1. Remove the auxiliary drain pan, if it is in place, to prevent exposureto dripping solder or excessive temperatures.

Note: For vertical fan-coil units, push the main condensate drain hose and overflow condensate drain hose through the inside of the chassis end panel to prevent them from getting burned when making sweat connections. Be sure to pull the hoses back through and route to the auxiliary drain pan when the end panel has cooled. 3. Solder the joint using bridgit lead-free solder (ASTM B32-89) to provide a watertight connection. Avoid overheating factory soldered joints when soldering field connections to the coil to prevent leakage from occurring. 4. Insulate all piping to coil connections as necessary after connections are complete. Note: Maintain a minimum distance of one foot between the reduction fitting for the 1/2-inch diameter line and the fan-coil unit piping connections. 5. Install the optional auxiliary drain pan, which ships in the accessory packet. Water Piping Connections to Factory-Installed Piping Package Before installing water piping supply and return lines to factory piping package, note the following items. • All piping connections are 5/8-inch O.D. (1/2-inch nominal) female copper connections. • The fan-coil supply and return piping should not interfere with the auxiliary drain pan or condensate line. See “Condensate Drain,” p. 38 for more information. • The installer must provide adequate piping system filtration and water treatment. • If the unit has a factory deluxe piping package, the piping includes a strainer with a 20-mesh size screen, which allows minimal protection from debris. Therefore, clean the strainer regularly. Note: Maintain a minimum distance of one foot between the reduction fitting for the 1/2-inch diameter line and the fan-coil piping connections. 1. The factory piping package ships with brackets to adequately support the piping during shipment. Remove these brackets before connecting water piping to the unit. 2. Close the piping end valves to the fully open position to prevent damage to the valve seat during brazing. 3. Remove the auxiliary drain pan, if it is in place, to prevent exposure to dripping solder or excessive temperatures. 4. Solder water piping connections to supply and return end connections. Avoid overheating factory soldered joints to prevent the possibility of leakage. 5. Insulate fan-coil piping to auxiliary drain pan connections and any piping that is not above the auxiliary drain pan. Condensate Drain 1. De-burr the pipe end before making the connection to the drain pan. 2. Connect a 7/8-inch O.D. copper pipe or tube, with a 0.20 inch wall thickness, to the auxiliary drain pan. This should be a mechanical connection that allows easy removal of the auxiliary drain pan when servicing the piping end pocket. 3. Slide the copper pipe over the drain pan nipple and tighten the collar on the pipe with a hose clamp (installer supplied). Maintain a continuous drain line pitch of one inch per ten feet of drain line run to provide adequate condensate drainage. Extend the drain line straight from the drain pan a minimum distance of six inches before making any turns. The installer must provide proper support for the drain line to prevent undue stress on the auxiliary drain pan.

the auxiliary drain pan. Next, place a 3/8-inch inside diameter flexible plastic tube over the nipple and secure with a field supplied hose clamp. Note: The installer is responsible for adequately insulating field piping. See the “External Insulating Requirements section for more information. Condensate Overflow Detection Device The condensate overflow detection device is an option on fan-coil units with either a Tracer ZN010, ZN510, ZN520, or the customer-supplied control interface. The float switch, mounting bracket, and coiled leads ship attached inside the piping end pocket of the unit. Install the switch by placing the hole or slot in the bracket over the condensate overflow drain (of the auxiliary drain pan) with the switch float extending over the pan. Secure the drain pan by attaching the pan’s bracket with the factory provided clip. See Figure 3 and Figure 4. Automatic Changeover Sensor Two-pipe changeover units with either the Tracer ZN010, ZN510, and ZN520 controls have an automatic changeover sensor that determines heating or cooling mode based on the supply water temperature. On units with a factory piping package, the factory straps the changeover sensor to the piping supply water pipe. See Figure 5, p. 40 and Figure 6, p. 40. Figure 3. Condensate float switch installed in horizontal auxiliary drain pan Figure 4. Condensate float switch installed in vertical auxiliary drain pan

wires to the piping side end panel. The installer should attach the sensor parallel to and in direct contact with the supply water pipe. Note: The installer is responsible to ensure the changeover sensor is installed in a location that can sense active water temperature. Otherwise, the unit may fail to sense the correct operating mode and disable temperature control. When using field supplied three-way valves, install the changeover sensor upstream of the valve on the supply water pipe. When using field supplied two-way control valves, install the changeover sensor in a location that will detect active water temperature. The unit must always be able to sense the correct system water temperature, regardless of the control valve position. Note: The maximum length of the automatic changeover wire cannot exceed ten feet from the control panel. If the sensor extends beyond the unit chassis, use shielded conductors to eliminate radio frequency interference (RFI). Automatic Electric Heat Lockout Switch Two-pipe fan-coil units with auxiliary electric heat have an automatic electric heat lockout switch that disengages the electric heat when hydronic heat enables. If the unit has a factory piping package and electric heat, the factory attaches the switch to the supply water pipe. When the lockout switch detects the supply water temperature above 95°F, it disengages the electric heat. This eliminates electric heat and hydronic heat working simultaneously. Figure 5. Attach the changeover sensor to the entering water pipe as shown for changeover to work properly Figure 6. Close-up view of the changeover sensor

inside the piping side end panel. The installer should position the lockout switch on the supply water line of the unit by sliding its spring connector over the pipe. See Figure 7. Venting the Hydronic Coil The hydronic coil contains a vent, either manual or automatic, to release air from the unit. This vent is not sufficient for venting the water piping system in the building. The coil air vent is on the piping side, above the coil connections on the unit. See Figure 8 and Figure 9. Perform the following steps to vent the coil after installing the unit. Figure 7. Electric heat lock out switch installed Figure 8. Manual coil air vent with set screw

2. For units with manual air vents, back the set screw out to expel air from the unit and then re- tighten the set screw. The automatic air vent should require no adjustment for the coil to vent. However, if the coil does not vent immediately, unscrew the outer portion of the fitting to expel air from the port. If debris has become trapped in the vent, completely remove the outer portion of the fitting and clean. External Insulating Requirements Insulate and vapor seal surfaces colder than surrounding air dew-point a to prevent unplanned condensation. Trane recommends field-insulation of the following areas to prevent potential condensate problems: 1. Supply and return water piping connections 2. Condensate drain lines and connections 3. Fresh air intake duct connections 4. Discharge duct connections 5. Wall boxes Balancing The Manual Circuit Setter Valve The manual circuit setter valve is an optional end valve supplied on the return pipe of the factory piping package. The valve allows the operator to regulate water flow through the hydronic coil, balance the water flow through the unit with other units in the piping system, and serves as a shutoff or end valve. See Figure 10. Figure 9. Manual coil air vent with Shrader fitting

1. Establish water flow through the coil. Perform an open override of the valve if the control valve is closed to the coil, either manually or by Tracer. If the piping package has two-position, normally closed valves: Drive open the valve using a 24 V signal. If the piping package has two-position, normally open valves: Manually drive open the valve by removing power to the valve. Figure 10. Manual circuit setter valve Figure 11. Automatic circuit setter valve Figure 12. Automatic circuit setter valve

button stem on top of the valve and push the lever located on the side of the valve to the full open position. 2. For presetting, use the appropriate valve curve shown in Figure 13, p. 45 to determine which setting is necessary to achieve the appropriate pressure drop. The “M” line is the appropriate line. 3. Carefully remove the Schrader pressure port connection caps on the manual circuit setter, since they will be at the same temperature as the pipeline. 4. Bleed all air from the hoses and meter before reading the pressure drop. Refer to the gauge operating instructions. 5. Adjust the circuit setter valve by turning the valve stem until the appropriate pressure drop is achieved. 6. After achieving the proper setting, slightly loosen the two socket head cap screws and rotate the memory stop around until it touches the back side of the indicator. Then tighten the screws to securely set the open memory position. The memory stop indicates the last set open position. 7. If using a three-way valve: close the control valve to the coil, with the differential pressure meter still connected. This will divert flow to the bypass side of a three-way valve. Adjust the balancing fitting to obtain the same pressure drop across the circuit setter valve as in step two when the control valve was open to the coil.

provided with fan-coil or Force-Flo units, use the ‘M’ . NOTICE Coil Damage! In all steam coil installations, the condensate return connections must be at the low point of the coil to ensure condensate flows freely from the coil at all times. Failure to do so could cause physical coil damage from water hammer, unequal thermal stresses,freeze-up and/or corrosion. 1. Make piping connections to the steam coil as shown in Figure 15. Cap the unused connection. 2. The coil is already pitched within the unit to provide proper pitch to drain condensate out of the coil. Verify that the unit has been properly leveled. 3. Install a 1/2-inch, 15-degree swing check vacuum breaker in the unused condensate return tapping as close as possible to the coil. 4. Vent the vacuum breaker line to atmosphere or connect it into the return main at the discharge side of the steam trap. 5. Pitch all steam supply and return mains down a minimum of one inch per ten feet in the direction of flow. 6. Do not drain the steam mains or take-off through the coils. Drain the mains ahead of the coils through a steam trap to the return line. 7. Overhead returns require one psig of pressure at the steam trap discharge for each two-feet elevation to ensure continuous condensate removal. 8. Proper steam trap selection and installation is necessary for satisfactory coil performance and service life. For installation, use the following steps: a. Position the steam trap discharge at least 12 inches below the condensate return connection. This provides sufficient hydrostatic head pressure to overcome trap losses and ensure complete condensate removal. b. Trane recommends using flat and thermostatic traps because of gravity drain and continuous discharge operation. c. Use float and thermostatic traps with atmospheric pressure gravity condensate return, with automatic controls or where the possibility of low pressure supply steam exists. d. Always install strainers as close as possible to the trap inlet side. Reference Figure 14 for an example of a properly piped steam coil.

Code of System Components in Piping Diagram FT Float and thermostatic steam trap BT Bucket steam trap GV Gate valve OV Automatic two-position (on-off) control valve TV Automatic three-way control valve VB Vacuum breaker CV Check valve ST Strainer AV Automatic or manual air vent Figure 15. Main steam coil connection diagram vacuum breaker (if desired) steam supply plugged condensate return

Follow the procedures below to install the unit properly. Refer to “Dimensions and Weights,” p. 14 for specific unit dimensions and mounting hole locations. Vertical Units NOTICE Electrical Wiring! Do not allow electrical wire to fall between the unit and installation surface. Failure to comply may result in electrical shorts or difficulty accessing wires. Install vertical units in an upright position using the 5/8-inch diameter double key slot hanger holes, located on the back of unit. The hanger holes allow a maximum shank size of 5/16-inch diameter threaded rods or lag screws (installer provides). 1. Prepare wall openings for recessed units. Reference unit submittal for each unit size dimensions. When installing vertical units, consideration should be given for units with an outside air intake. 2. If the unit has leveling legs, adjust them correctly to level unit. 3. Mark the position of the keyslot hanger holes on the wall according to the dimensions given in “Dimensions and Weights,” p. 14 for each unit model and size. Align the hole locations evenly. 4. Insert the threaded rods or lag screws in the wall before setting the unit in place. 5. Remove the front panel (cabinet unit only) by lifting it upward. 6. Position the hanger holes, located on the back of the unit, over the rod or lag screw heads, pushing the unit downward to properly position. 7. Complete piping and wiring connections, in addition to any necessary ductwork to the unit as instructed in the following sections. Ensure that the auxiliary drain pan is in position on fan-coil units. 8. Install the front panel before starting the unit. On cabinet units, replace the front panel by aligning the bottom tabs on the unit with the respective slots on the panel bottom. Slide the front panel down onto the tabs while holding the panel close as possible to the cabinet. While the bottom tabs are engaged, slide the front panel upward enough to allow the top engaging edge of the front panel to lap over the engaging edge of the unit. This should allow the panel to drop down and lock into position. On recessed units, install the front panel by aligning and locking together the interlocking support channel of the panel and unit. While holding the panel against the unit, tighten the screws at the top of the panel until it fits tight against the unit’s front. Do not over tighten the screws. NOTICE Motor Overload! All unit panels and filters must be in place prior to unit startup. Failure to have panels and filters in place may cause motor overload. Horizontal Units Install horizontal units suspended from the ceiling using the four 5/8-inch diameter double key slot hanger holes, located on the top of the unit. The hanger holes allow a maximum shank size of 5/16-inch diameter threaded rods or lag screws (installer provided). Follow the installation procedure below.

90B, concerning the use of concealed ceiling spaces as return air plenums. 1. Prepare the ceiling opening for recessed units. Reference the unit submittals for dimensions. 2. Position and install the suspension rods or a suspension device (supplied by installer) according to the unit model and size in “Dimensions and Weights,” p. 14. 3. On cabinet units, remove the bottom panel by using a 5/32-inch Allen wrench to unscrew fasteners. Swing the panel down and lift outward. 4. Level the unit by referencing the chassis end panels. Adjust the suspension device. 5. Complete piping and wiring connections, in addition to any necessary ductwork as instructed in the following sections. Ensure that the auxiliary drain pan is in position on fan-coil units. 6. Install the bottom panel before starting the unit. 7. Ensure condensate drain line is pitched one inch per ten feet of pipe away from the fan-coil unit. Cabinet Units Install the bottom panel by placing the hinged end on the unit’s hinged end (always at the return end of the unit). Refer to “Dimensions and Weights,” p. 14 for keyslot hanger hole locations. Swing the panel upward into position. Secure the panel with the fasteners provided. Do not overtighten the fasteners. Recessed Units Refer to “Dimensions and Weights,” p. 14 for mounting locations and unit weights. Follow the procedure below and see Figure 16, p. 50. 1. Insert the mounting bolts through the panel brackets of the trim ring and secure to the hanger holes on the unit. Tighten the mounting bolts to pull the trim ring snug against the finished ceiling. 2. Install the bottom panel by placing the hinged end on the trim ring hinged end (always at the unit’s return end). 3. Adjust the expansion collar’s inner duct (only on fan-coil units with a bottom return) to ensure a tight fit against the insulation located on the perimeter of the bottom panel’s return louver. 4. Close the s-hook on each end of safety chain assembly. Insert s-hooks through holes in unit and door. Close s-hook on door. 5. Insert retaining screws through bottom panel door and place retaining rings on screws. 6. Swing the bottom panel upward into position. Hook the safety chain to the bottom panel and the unit. Tighten the panel to the unit with the fasteners provided. NOTICE Unit Leveling! All unit panels and filters must be in place prior to unit start-up. Failure to have panels and filters in place may cause motor overload.

• On sizes 8, 10, and 12 center installation position and use 2- or 3.5-inch bolts, whichever is best suited for installation. Also, install two safety chains assemblies on these sizes. • Expansion collar is furnished with fan-coil with bottom return only. The collar is not necessary for Force-Flo units. Installation Checklist The following checklist is only an abbreviated guide to the detailed installation procedures given in this manual. Use this list to ensure all necessary procedures are complete. For more detailed information, refer to the appropriate sections in this manual. Figure 16. Installing the trim ring assembly on horizontal recessed units

Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. NOTICE Unit Leveling! The unit must be installed level (zero tolerance) in both horizontal axis for proper operation. Do not use the coil or drain pan as the reference point because the coil may be pitched and the drain pan has an inherent positive slope to provide proper drainage. � 1. Inspect the unit for shipping damage. � 2. Level installation location to support the unit weight adequately. Make all necessary wall or ceiling openings to allow adequate air flow and service clearances. � 3. Ensure the unit chassis is installed level. � 4. Verify that wall and ceiling openins are properly cut per the unit submittals. � 5. Verify that installation of horizontal concealed units meets the national Fire Protection Association (N.F.P.A.) Standard 90A or 90B concerning the use of concealed ceiling spaces as return air plenums. Verify correct ceiling opening dimensions on unit submittals. Secure the unit and any accessory items properly to the wall or ceiling support rods. � 6. Complete all piping connections correctly. � 7. Check field sweat connections for leaks and tighten the valve stem packing, and piping pkg unions if necessary. � 8. Install the auxiliary drain pan properly under piping package on fan-coil units. � 9. Complete condensate drain line connections on fan-coil units. � 10. Pitch condensate drain line away from fan-coil one-inch drop per ten feet of pipe. � 11. Install automatic changeover sensor option on the supply water line, if applicable. � 12. Install automatic electric heat lockout switch option on the supply water line, if applicable. � 13. Install condensate overflow switch option correctly on the auxiliary drain pan, if applicable. � 14. Ensure the low temperature detection device option is correctly installed. � 15. Complete all necessary duct connections. � 16. Complete all interconnection wiring for the wall-mounted fan mode switch or zone sensor per the wiring schematic and guidelines established in “Wall-Mounted Control Interconnection Wiring,” p. 60. � 17. Install the wall-mounted fan mode switch, or zone sensor module options properly. For wireless zone sensors, be sure to set the address (see “Address Setting,” p. 68). � 18. Connect electrical supply power according to the NEC and unit wiring diagrams. � 19. Remove any miscellaneous debris, such as sheetrock dust, that may have infiltrated the unit during construction. � 20. Replace the air filter as required.

Installation instructions for the wall-mounted sensors are provided in this chapter. General Information Control Options (Including Factory-Installed) Tracer ZN010 Options Tracer ZN510 and ZN520 Options Unit-mounted zone sensor: Digit 30 = E and Digit 31 = V Wall-mounted zone sensor: Digit 30 = F or G and Digit 31 = 1 Wall-mounted zone sensor: Digit 30 = E and Digit 31 = W Wall-mounted zone sensor: Digit 30 = F or G and Digit 31 = 2 Split-mounted zone sensor, unit-mounted fan mode and wall-mounted setpoint dial: Digit 30 = E and Digit 31 = X Split-mounted zone sensor, unit-mounted fan mode and wall-mounted setpoint dial: Digit 30 = F or G and Digit 31 = Y Unit-mounted zone sensor: Digit 30 = F or G and Digit 31 = Z X13790843-01 X13511530-01 (wall) X13651467-02 (comm) X13790841-01 X13790842-01 (wall) X13651467-02 (comm) X13511529-01 (wall) X13790849-01 (unit) X13511527-01 (wall) X13790849-01 (unit) X13651467-02 (comm) X13790844-01

Reference the wall-mounted zone sensor dimensions in Figure 17, p. 54. Position the sensor on an inside wall three to five feet above the floor and at least 18 inches from the nearest outside wall. Installing the sensor at a lower height may give the advantage of monitoring the temperature closer to the zone, but it also exposes the sensor to airflow obstructions. Ensure that air flows freely over the sensor. Tracer ZN510 and ZN520 Options (continued) Wall-mounted wired display sensor with setpoint adjustment: Digit 30 = F or G and Digit 31 = 4 Wall-mounted wireless temperature sensor (WTS) (setpoint adjustment, no fan speed adjustment) and unit-mounted receiver: Digit 30 = F or G and Digit 31 = 6 Wall-mounted wireless display sensor (WDS) and unit-mounted receiver: Digit 30 = F or G and Digit 31 = 7 X13790886-04 (wall) X13790821-01 (wall) X13790860-02 (unit) X13790822-04 (wall) X13790860-02 (unit)

• Areas of direct sunlight • Areas in the direct airstream of air diffusers • Exterior walls and other walls that have a temperature differential between the two sides • Areas that are close to heat sources such as sunlight, appliances, concealed pipes, chimneys, or other heat-generating equipment • Drafty areas • Dead spots behind doors, projection screens, or corners • Walls that are subject to high vibration • Areas with high humidity • High traffic areas (to reduce accidental damage or tampering) • Metal barriers between the receiver and the sensor (for example, plastered walls with metal lathe or metal roof decks) • Thick, solid concrete walls between the receiver and the sensor • Placing the sensor inside metal enclosures Figure 17. Wall-mounted zone sensor dimensions 2.9 in (73.5 cm) TYP 0.24 in (6 mm) TYP R.07 in (R1.9) mm 0.31 in (8 mm) 1.08 in (27.5 mm) 0.12 in (3 mm) 4.68 in (118.9 mm) 3.39 in (86 mm) 2.48 in (63 mm) 0.63 in (15.9 mm) 1.45 in (36.8 mm) 2.62 in (66.5 mm)

If a parallel approach by a person in a wheelchair is required, reduce the maximum height to 48 inches. Note: Consult section 4.27.3 of the 2002 ADA (Americans with Disability Act) guideline, and local building codes, for further details regarding wheelchair requirements. Mounting Surfaces Using the hardware provided, mount the back plate of the sensor to a flat surface such as sheetrock or plaster, or an electrical junction box. The sensor must be mounted plumb for accurate temperature control and to ensure proper air movement through the sensor. • If mounting onto sheetrock or plaster, use the plastic threaded anchors (pre-drilling holes is not usually necessary) and the two M3.5 x 20 mm mounting screws. • For mounting onto an electrical junction box, use the two 6-32 x 3/4 in. screws. Before beginning installation, consider the location considerations below. Also, refer to the unit wiring schematic for specific wiring details and point connections. Location Considerations Avoid mounting the sensor in an area subject to the following conditions: • Dead spots, such as behind doors or in corners that do not allow free air circulation. • Air drafts from stairwells, outside doors, or unsectioned hollow walls. • Radiant heat from the sun, fireplaces, appliances, etc. • Airflow from adjacent zones or other units. • Unheated or uncooled spaces behind the controller, such as outside walls or unoccupied spaces. • Concealed pipes, air ducts, or chimneys in partition spaces behind the controller. Fan Mode Switch Installation The fan mode switch ships loose inside the unit accessory bag. Follow the steps below to install the fan mode switch. Items needed: 2 x 4 electrical junction box 1. Remove the brown wire if not using a field-supplied damper. 2. Remove the terminals, cut and strip wires as required for installation. 3. Level and position a 2 x 4 electrical junction box. 4. Follow the instructions given in “Wall-Mounted Control Interconnection Wiring,” p. 60 and route the wires as shown in the wiring diagram. Refer to the typical wiring diagram or to the unit specific diagram on the unit. 5. Position the fan mode switch over the junction box with the two screws supplied. Wired Zone Sensor Installation Follow the procedure below to install the wired zone sensor module. 1. Note the position of the setpoint adjustment knob and gently pry the adjustment knob from the cover using the blade of a small screwdriver. 2. Insert the screwdriver blade behind the cover at the top of the module and carefully pry the cover away from the base. 3. To mount the sensor back plate:

b. Secure the back plate against the mounting surface using included hardware. 4. To install the zone sensor module to a standard junction box: a. Level and install a 2“ x 4” junction box (installer supplied) vertically on the wall. b. Pull the control wires through the cutout. Attach the module to the wall using the screws provided. 5. Strip the insulation on the interconnection wires back 0.25-inch and connect to TB1. 6. Screw down the terminal blocks. 7. To replace the cover: a. Hook the cover over the top of the back plate. Apply light pressure to the bottom of the cover until it snaps in place. b. Install the security screw into the bottom of the cover (if desired). If installing a Tracer ZN510 or Tracer ZN520 zone sensor, see “Tracer ZN510 and ZN520 Options,” p. 52 and p. 53 for more information. Installing Wall-Mounted Wireless Zone Sensors General Information This section provides a description of the sensors, as well as part numbers and dimensions. Product Description Trane® wireless sensor sets are compatible with any Trane unit controller that uses a standard 10 kΩ temperature input. The sets include sensor, receiver, wiring harness, and two AA lithium batteries. No further software or hardware is necessary for site evaluation, installation, or maintenance. Zone temperature is standard on all models. Note: A service tool cannot be connected to a Trane wireless sensor. Trane wireless sensors include the following models: Wireless Display Sensor (Model WDS) This configurable sensor has an LCD display. It provides the same functions as many currently available Trane wired sensors. Configurable features for fan-coils include: • Temperature units: Fahrenheit (ºF) or Celsius (ºC) • Temperature resolution: 1.0, 0.5, or 0.1 degrees • Ability to display setpoint only (zone temperature does not display) • Single or no setpoint • Fan settings: high, medium, low, auto, off • Timed override request function • Lockable settings to protect agains unauthorized use • Service pin request Wireless Temperature Sensor (Model WTS) This sensor measures and transmits the zone temperature only. Dimensions The following illustration provides specific dimension details. The dimensions are the same for all wireless sensor models.

units). For most installations, barriers limit proper radio signal strength more than distance. For best radio transmission range and reliability, mount the receiver and sensor in line of sight. Where this is not possible, try to minimize the number of barriers between the pair of devices. In general, sheetrock walls and ceiling tiles offer little restriction to the transmission of the radio signal throughout the building. The transmission range for the sensor is as follows: • Open range: 2,500 ft (762 m) (packet error rate = 2%) • Usable range: 200 ft (61 m) • Typical range: 75 ft (23 m) Mounting the Sensor Back Plate To mount the sensor back plate: 1. Hold the back plate against the mounting surface and mark the screw locations. 2. Secure the back plate against the mounting surface using included hardware. The following figure shows an example of mounting the back plate of the sensor into sheetrock or plaster. 0.31 in (8 mm) TYP R.07 in (R1.9 mm) 2.9 in (73.5 mm) TYP 0.24 in (6 mm) 1.08 in (27.5 mm) 0.12 in (3 mm) 3.39 in (86 mm) 4.68 in (118.9 mm) 0.63 in (15.9 mm) 1.45 in (36.8 mm) 2.62 in (66.5 mm)

To replace the cover: 1. Hook the cover over the top of the back plate. Apply light pressure to the bottom of the cover until it snaps in place. 2. Install the security screw into the bottom of the cover (if desired). Security screw

Specific unit wiring diagrams, based on unit options ordered, are provided inside each unit and can be easily removed for reference. Use these diagrams for connections or trouble analysis. Wiring diagrams are attached on the inside of the front panel of vertical cabinet and recessed models and on the fan and motor panel of vertical concealed and all horizontal models. Supply Power Wiring �WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Refer to the unit nameplate to obtain the minimum circuit ampacity (MCA) and maximum fuse size (MFS) or maximum circuit breaker (MCB) to properly size field supply wiring and fuses or circuit breakers. Refer to the unit operating voltage listed on the unit wiring schematic, submittal, or nameplate. Reference the wiring schematic for specific wiring connections. NOTICE Use Copper Conductors Only! Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors may result in equipment damage. Note: All field wiring should conform to NEC and all applicable state and local code requirements. The control panel box is always on the end opposite the piping connections. Access the control box by removing the two screws that secure the front cover. This will allow the panel to be removed, to provide access to the electrical components. �WARNING Hazardous Electrical Shorts! Insulate all power wire from sheet metal ground. Failure to do so may cause electrical shorts that could result in death or serious injury. If the unit does not have a disconnect switch, the power leads and capped ground wire are inside the control panel. If the unit has a disconnect switch, the power leads are wired to the junction box switch on the control panel. Pull the capped ground wire into the junction box. Electrical Grounding Restrictions All sensor and input circuits are normally at or near ground (common) potential. When wiring sensors and other input devices to the Tracer controller, avoid creating ground loops with grounded conductors external to the unit control circuit. Ground loops can affect the measurement accuracy of the controller.

IT1 may create immediate or premature unit component failure. All input/output circuits (except isolated relay contacts and optically isolated inputs) assume a grounded source, either a ground wire at the supply transformer to control panel chassis, or an installer supplied ground. Wall-Mounted Control Interconnection Wiring The installer must provide interconnection wiring to connect wall-mounted devices such as a fan mode switch or zone sensor module. Refer to the unit wiring schematic for specific wiring details and point-to-point wiring connections. Dashed lines indicate field wiring on the unit wiring schematics. All interconnection wiring must conform to NEC Class 2 wiring requirements and any state and local requirements. Refer to Table 3 for the wire size range and maximum wiring distance for each device. Recommendation: Do not bundle or run interconnection wiring in parallel with or in the same conduit with any high-voltage wires (110 V or greater). Exposure of interconnection wiring to high voltage wiring, inductive loads, or RF transmitters may cause radio frequency interference (RFI). In addition, improper separation may cause electrical noise problems. Therefore, use shielded wire (Beldon 83559/83562 or equivalent) in applications that require a high degree of noise immunity. Connect the shield to the chassis ground and tape at the other end. Note: Do not connect any sensor or input circuit to an external ground connection. Table 3. Maximum wiring distances for low voltage controls (ft) Device Wire Size Range Fan Speed Switch 14–22 AWG 500 Zone Sensor 16–22 AWG 200 Table 4. Low vertical free-discharge motors, 115 volt Size FLA HP (kW) RPM 03 0.7 0.03 (0) H 1090 M 770 L 560 04 0.8 0.03 (0) H 1090 M 750 L 560 06 1.1 0.03 (0) H 1115 M 760 L 560 Note: Actual rpm will vary with application and configuration Table 5. Decimal to fractional HP (kW) conversion FC Decimal Fraction 02 0.03 1/30 0.07 1/15 03 0.04 1/25 0.05 1/20 0.08 1/12 Note: Fractional HP (kW) values are approximate values and not necessarily actual HP (kW).

0.03 1/30 Table 6. Free-discharge motors on units with two-row, electric, or steam coils Unit Size 115 Volt 208–230 Volt 277–480 Volt rpm FLA hp (kW) FLA hp (kW) FLA hp (kW) H M L 02 0.60 0.03 (0.02) 0.3 0.03 (0.02) 0.2 0.03 (0.02) 980 840 655 03 0.70 0.04 (0.02) 0.4 0.04 (0.02) 0.3 0.04 (0.02) 980 780 580 04 0.90 0.05 (0.04) 0.5 0.05 (0.04) 0.4 0.05 (0.04) 1050 780 580 06 1.20 0.07 (0.05) 0.6 0.07 (0.05) 0.5 0.07 (0.05) 1030 780 580 08 1.40 0.12 (0.09) 0.9 0.12 (0.09) 0.6 0.12 (0.09) 1080 800 600 10 0.90 0.05 (0.04) 0.5 0.05 (0.04) 0.4 0.05 (0.04) 1050 780 580 1.20 0.07 (0.05) 0.6 0.07 (0.05) 0.5 0.07 (0.05) 1030 780 580 12 0.90 0.05 (0.04) 0.5 0.05 (0.04) 0.4 0.05 (0.04) 1050 780 580 1.40 0.12 (0.09) 0.9 0.12 (0.09) 0.6 0.12 (0.09) 108 800 600 Note: Actual rpm will vary with application and configuration. Size 10 and 12 units have two motors. Table 7. High-static motors on units with two-row, electric, or steam coils Unit Size 115 Volt 208–230 Volt 277–480 Volt rpm FLA hp (kW) FLA hp (kW) FLA hp (kW) H M L 2 1.10 0.07 (0.05) 0.6 0.07 (0.05) 0.5 0.07 (0.05) 1480 1110 865 3 1.40 0.08 (0.06) 0.7 0.08 (0.06) 0.6 0.08 (0.06) 1400 1175 860 4 1.60 0.10 (0.07) 0.8 0.10 (0.07) 0.7 0.10 (0.07) 1475 1315 1070 6 2.60 0.16 (0.12) 1.2 0.16 (0.12) 1 0.16 (0.12) 1400 1070 855 8 3.40 0.24 (0.18) 1.4 0.24 (0.18) 1.1 0.24 (0.18) 1475 1285 975 10 1.60 0.10 (0.07) 0.8 0.10 (0.07) 0.7 0.10 (0.07) 1475 1315 1070 2.60 0.16 (0.12) 1.2 0.16 (0.12) 1 0.16 (0.12) 1400 1070 855 12 1.60 0.10 (0.07) 0.5 0.10 (0.07) 0.7 0.10 (0.12) 1475 1315 1240 3.40 0.24 (0.18) 0.9 0.24 (0.18) 1.1 0.24 (0.18) 1475 1285 975 Note: Actual rpm will vary with application and configuration. Size 10 and 12 units have two motors. Table 5. Decimal to fractional HP (kW) conversion (continued) FC Decimal Fraction Note: Fractional HP (kW) values are approximate values and not necessarily actual HP (kW).

Unit Size 115 Volt 208–230 Volt 277–480 Volt rpm FLA hp (kW) FLA hp (kW) FLA hp (kW) H M L 2 0.60 0.03 (0.02) 0.3 0.03 (0.02) 0.2 0.03 (0.02) 980 840 655 3 0.80 0.05 (0.04) 0.5 0.05 (0.04) 0.4 0.05 (0.04) 1080 800 600 4 1.00 0.06 (0.04) 0.6 0.06 (0.04) 0.5 0.06 (0.04) 1080 800 600 6 1.40 0.12 (0.09) 0.9 0.12 (0.09) 0.6 0.12 (0.09) 1080 800 600 8 1.70 0.13 (0.10) 1.0 0.13 (0.10) 0.8 0.13 (0.10) 1080 800 600 10 1.00 0.06 (0.04) 0.6 0.06 (0.04) 0.5 0.06 (0.04) 1080 800 600 1.40 0.12 (0.09) 0.9 0.12 (0.09) 0.6 0.12 (0.09) 1080 800 600 12 1.00 0.06 (0.04) 0.6 0.06 (0.04) 0.5 0.06 (0.04) 1080 800 600 1.70 0.13 (0.10) 1.0 0.13 (0.10) 0.8 0.13 (0.10) 1080 800 600 Note: Actual rpm will vary with application and configuration. Size 10 and 12 units have two motors. Table 9. High-static motors on units with three- and four-row coils Unit Size 115 Volt 208–230 Volt 277–480 Volt rpm FLA hp (kW) FLA hp (kW) FLA hp (kW) H M L 2 1.10 0.07 (0.05) 0.6 0.07 (0.05) 0.5 0.07 (0.05) 1480 1110 865 3 1.30 0.08 (0.06) 0.7 0.08 (0.06) 0.5 0.08 (0.06) 1500 1355 1110 4 2.10 0.13 (0.10) 0.9 0.13 (0.10) 0.7 0.13 (0.10) 1580 1375 1240 6 3.40 0.24 (0.18) 1.4 0.24 (0.18) 1.1 0.24 (0.18) 1475 1285 975 8 3.40 0.24 (0.18) 1.4 0.24 (0.18) 1.1 0.24 (0.18) 1475 1285 975 10 2.10 0.13 (0.10) 0.9 0.13 (0.10) 0.7 0.13 (0.10) 1580 1375 1240 3.40 0.24 (0.18) 1.4 0.24 (0.18) 1.1 0.24 (0.18) 1475 1285 975 12 2.10 0.13 (0.10) 0.9 0.13 (0.10) 0.7 0.13 (0.10 ) 1580 1375 1240 3.40 0.24 (0.18) 1.4 0.24 (0.18) 1.1 0.24 (0.18) 1475 1285 975 Note: Actual rpm will vary with application and configuration. Size 10 and 12 units have two motors. Table 10. Fan-coil electric heat kW Unit Size Unit Voltage kW kW kW kW kW kW kW kW kW kW kW 02 115 1.0 1.5 2.0 230 1.0 1.5 2.0 277 1.0 1.5 2.0 208 0.8 1.1 1.5 1.9 03 115 1.0 1.5 2.0 2.5 230 1.0 1.5 2.0 2.5 277 1.0 1.5 2.0 2.5 208 0.8 1.1 1.5 1.9 2.3 04 115 2.0 2.5 3.0 230 2.0 2.5 3.0 277 2.0 2.5 3.0 208 1.5 1.9 2.3 3.0

for Fan-Coils with Single Phase Electric Heat Heater amps = (heater kW x 1000)/heater voltage Note: Use 120 V heater voltage for 115 V units. Use 240 V heater voltage for 230 V units. MCA = 1.25 x (heater amps + all motor FLAs) MFS or HACR type circuit breaker = (2.25 x largest motor FLA) + second motor FLA + heater amps (if applicable) HACR (heating, air-conditioning and refrigeration) type circuit breakers are required in the branch circuit wiring for all fan-coils with electric heat. Select a standard fuse size or HACR type circuit breaker equal to the MCA. Use the next larger standard size if the MCA does not equal a standard size. Standard fuse sizes are: 15, 20, 25, 30, 35, 40, 45, 50, 60 amps Fan-coil electric heat MBh = (heater kW) (3.413) 06 115 2.0 3.0 230 2.0 3.0 4.0 5.0 6.0 277 2.0 3.0 4.0 5.0 6.0 208 1.5 2.3 3.0 3.8 4.5 5.3 08 115 2.0 3.0 230 2.0 3.0 4.0 5.0 6.0 7.0 277 2.0 3.0 4.0 5.0 6.0 7.0 208 1.5 2.3 3.0 3.8 4.5 5.3 6.0 10 115 3.0 230 3.0 4.0 5.0 6.0 7.0 8.0 277 3.0 4.0 5.0 6.0 7.0 8.0 208 2.3 3.0 3.8 4.5 5.3 6.0 12 115 3.0 230 3.0 4.0 5.0 6.0 7.0 8.0 10.0 277 3.0 4.0 5.0 6.0 7.0 8.0 10.0 208 2.3 3.0 3.8 4.5 5.3 6.0 Table 11. Electric heat kW, low vertical fan-coil Unit Size Unit Voltage kW kW kW kW 3.0 115.0 1.0 1.5 2.0 4.0 115.0 1.0 1.5 2.0 2.5 6.0 115.0 1.0 1.5 2.0 2.5 Note: Low vertical units are only available with electric heat in combination with the two-row cooling coil. Table 10. Fan-coil electric heat kW (continued) Unit Size Unit Voltage kW kW kW kW kW kW kW kW kW kW kW

Unit Size Volts Hz Phase Wires Heater kW Heater amps/ph 02 208.0 60 1 2 2.25 10.9 240.0 1 2 3.0 12.5 277.0 1 2 3.0 10.9 208.0 3 3 2.25 6.3 240.0 3 3 3.0 7.3 480.0 3 4 3.0 3.7 03 208.0 60 1 2 4.5 21.7 240.0 1 2 6.0 25.0 277.0 1 2 6.0 21.7 208.0 3 3 4.5 12.6 240.0 3 3 6.0 14.5 480.0 3 4 6.0 7.3 04 208.0 60 1 2 5.7 27.5 240.0 1 2 7.5 31.3 277.0 1 2 7.5 27.1 208.0 3 3 5.7 15.9 240.0 3 3 7.5 18.1 480.0 3 4 7.5 9.1 06 208.0 60 1 2 7.9 38.0 240.0 1 2 10.5 43.8 277.0 1 2 10.5 38.0 208.0 3 3 7.9 21.9 240.0 3 3 10.5 25.3 480.0 3 4 10.5 12.7 Note: All data based on individual units. Electric heat will operate only with fan at high speed. Table 13. Force-Flo single stage, low kW electric heat Unit Size Voltage # Wires kW amps/ph kW amps/ph kW amps/ph 02 208/60/1 2 0.8 3.7 1.5 7.3 240/60/1 2 1.0 4.2 2.0 8.4 277/60/1 2 1.0 3.7 2.0 7.3 03 208/60/1 2 2.3 10.9 240/60/1 2 3.0 12.5 277/60/1 2 3.0 10.9 208/60/3 3 2.3 6.3 240/60/3 3 3.0 7.3 480/60/3 4 3.0 3.7 04 208/60/1 2 2.3 10.9 240/60/1 2 3.0 12.5 277/60/1 2 3.0 10.9 208/60/3 3 2.3 6.3 240/60/3 3 3.0 7.3 480/60/3 4 3.0 3.7

Table 14. Force-Flo two-stage electric heat Unit Size Volts Hz Phase Wires 1st Stage kW Total kW Total amps/ph 02 208 60 1 2 0.8 2.3 10.9 240 1 2 1.0 3.0 12.5 277 1 2 1.0 3.0 10.9 208 3 3 0.8 2.3 6.3 240 3 3 1.0 3.0 7.3 480 3 4 1.0 3.0 3.7 03 208 60 1 2 1.5 4.5 21.7 240 1 2 2.0 6.0 25.0 277 1 2 2.0 6.0 21.7 208 3 3 1.5 4.5 12.6 240 3 3 2.0 6.0 14.5 480 3 4 2.0 6.0 7.3 Table 13. Force-Flo single stage, low kW electric heat (continued) Unit Size Voltage # Wires kW amps/ph kW amps/ph kW amps/ph

Table 14. Force-Flo two-stage electric heat (continued) Unit Size Volts Hz Phase Wires 1st Stage kW Total kW Total amps/ph

Units with Tracer ZN510 and ZN520 Only Communications Tracer ZN510 and ZN520 controllers are LonTalk® devices that interface with the Trane Tracer Summit building management system. Reference the unit wiring diagram or submittals. Ground shields at each Tracer ZN510 and ZN520, taping the opposite end of each shield to prevent any connection between the shield and anther ground. Refer to the most recent version of Trane publication CNT-SVX04A-EN (Tracer ZN.520 Unit Controller: Installation, Operation and Programming Guide) for the communication wiring diagram. Communication wire must conform to the following specification: 1. Shielded twisted pair 18 AWG 2. Capacitance 23 (21–25) picofarads (pF) per foot 3. Listing/Rating—300 V 150C NEC 725-2 (b) Class 2 Type CL2P 4. Trane Part No. 400-20-28 or equivalent, available through Trane BAS Buying Group Accessories catalog. Note: Communication link wiring is a shielded, twisted pair of wire and must comply with applicable electrical codes. Follow these general guidelines when installing communication wiring on units with a Tracer ZN510 or ZN520 controller: • Maintain a maximum 5000 ft. aggregate run. • Install all communication wiring in accordance with the NEC and all local codes. • Solder the conductors and insulate (tape) the joint sufficiently when splicing communication wire. Do not use wire nuts to make the splice. • Do not pass communication wiring between buildings because the unit will assume different ground potentials. • Do not run power in the same conduit or wire bundle with communication link wiring. Note: You do not need to observe polarity for LonTalk communication links. Device Addressing LonTalk devices are given a unique address by the manufacturer. This address is called a Neuron ID. Each Tracer ZN510 and ZN520 controller can be identified by its unique Neuron ID, which is printed on a label on the controller’s logic board. The Neuron ID is also displayed when communication is established using Tracer Summit or Rover service tool. The Neuron ID format is 00-01-64-1C-2B-00. Wire Characteristics Controller communication-link wiring must be low capacitance, 18-gage, shielded, twisted pair with stranded, tinned-copper conductors. For daisy chain configurations, limit the wire run length to 5,000 ft. Truck and branch configurations are significantly shorter. LonTalk wire length limitations can be extended through the use of a link repeater. Recommended Communication Wiring Practices The following guidelines should be followed while installing communication wire. • LonTalk is not polarity sensitive. Trane recommends that the installer keep polarity consistent throughout the site. • Only strip away two inches maximum of the outer conductor of shielded cable.

sharing 24 Vac between LonTalk UCMs. • Avoid over-tightening cable ties and other forms of cable wraps. A tight tie or wrap could damage the wires inside the cable. • Do not run LonTalk cable alongside or in the same conduit as 24 Vac power. • In an open plenum, avoid lighting ballasts, especially those using 277 Vac. • Do not use a trunk and branch configuration, if possible. Trunk and branch configurations shorten the distance cable can be run. Wireless Temperature Sensor Note: Receivers ship installed on the unit. To remove the receiver, press in the retention tabs on the underside of the receiver enclosure (see Figure 18, p. 68) and push upward. Address Setting The process of establishing communication between a receiver and sensor is referred to as association. The following limitations apply: • Each associated receiver/sensor set that communicates within the reception range of the wireless system must have a unique address. It is not possible to associate more than one sensor to a receiver, nor is it possible to associate more than one receiver to a sensor. To associate a receiver and sensor, the two devices must have their rotary address switches set to the same address. Important: Set the addresses before applying power to the receiver and before removing the insulation strip (Figure 19, p. 69) from the sensor. To set the receiver and sensor addresses: 1. Using a small screwdriver, set the three rotary address switches (locations S1, S2, S3) on the receiver to an address between 001 and 999 (see Figure 19, p. 69). You do not have to remove the covers to access the rotary address switches. Note: Do not use 000 as an address. An address of 000 returns the receiver outputs to their factory defaults (zone temperature and setpoint outputs: 72.5°F [22.5°C]), removes all association knowledge, and prevents association with a sensor. Figure 18. Retention tabs on underside of receiver enclosure

as the receiver (see Figure 19). Note: Do not use 000 as an address. An address of 000 removes all association knowledge, reverts the sensor to a low-power hibernation mode, and sends a disassociation request to the receiver. 3. Record the address and location of the receiver and sensor pair. Observing the Receiver for Readiness to Associate After initial power up, the receiver conducts a channel scan for 20 seconds. During this time, the receiver selects from 16 available channels the clearest channel on which to operate. LED1, LED2, and LED3 flash rapidly in succession (round-robin style) while the channel scan is in progress, as shown in part 1 of the illustration. Important: Do not attempt association (leave the insulation strip in place) until the channel scan is finished. After the channel scan is finished, LED3 begins blinking (one-blink pattern) to show that the receiver is ready to be associated with a sensor (see part 2 of the following figure). Figure 19. Setting the rotary address switches on the receiver and the sensor S5 GND R77 C35 S1 S2 C33 LED4 S4 S5 S3 LED1 LED2 LED3 LED5 C34 J1 COMM - 24VAC/DC SETPOINT HEATING SET SIGNAL POWER ADDDRESS FAN/SYSTEM ZONE COMM + INSTALL WIRELESS GND B1 + INSTALL WIRELESS S4 S3 S2 S1 ADDRESS STATUS BATTERY LED5 SIGNAL LED3 LED2 LED1 Pb Pb-FREE STATUS LED4 L TALL LESS L TA LE Do not remove the insulation strip yet. Receiver Sensor 2 1 LED3 0 20 Sec.

To associate the sensor to the receiver: 1. Remove the sensor cover by firmly pressing the thumb tab at the bottom of the cover and pulling the cover away from the back plate. 2. Verify that the sensor is set to the same address as the receiver it is to be associated with. 3. Power the sensor by removing the insulation strip from between the two batteries. Association is automatically initiated between the sensor and the receiver. When LED3 on the receiver stops blinking, association has been established. If the first association attempt is unsuccessful, the sensor automatically re-attempts association with the receiver every 10 minutes. Note: An associated sensor that has lost communication with the receiver will transmit an association request every 50 minutes. You can manually initiate association (see “Manual Association,” p. 120”). Testing Signal Strength and Battery Status To verify that the association process was successful and that the batteries have adequate charge: 1. Firmly press and release the Test button on the bottom of the sensor (as illustrated below). 2. For model WTS, view LED1, LED2, and LED3 to determine the signal strength. View LED5 to determine the battery status (see the following figure for model WTS sensors). Note: The LEDs will turn Off after 5 seconds to conserve battery strength. For model WDS, determine the signal strength and battery status by viewing the symbols on the sensor display (see the following figure for model WDS sensors). 3. Record the results in your commissioning statement. Note: For more information, see “Testing Signal Strength,” p. 117 and “Testing Battery Status,” p. 118.

Note: Sensors shipped with the fan-coil are pre-configured for three speeds. The configuration of the sensor determines which system features can be accessed and changes can be made by the tenant (for example, changes to cooling/heating mode, setpoint, or fan speed. Verify system and associated unit features before configuring the sensor. The building owner or operator may choose to limit tenant access to certain features. This can be done through configuration. Or, if a sensor is configured to match all control capabilities of the building automation system, the locking feature can be used to restrict the tenant from making changes. Configuration Procedure To configure settings on the model WDS sensor, follow this procedure in the order presented. 1. Press the configuration button for 3 seconds. LED1 LED2 LED3 LED5 Model WTS sensor Model WDS sensor Test button Push firmly, then release Push firmly, then release Test button

symbol appears on the display and the menus are separated by lines, as illustrated below. 2. Press the center button on the keypad to begin the configuration process. Configuration button Center button

• Press or to scroll to the next selection (as illustrated). • Press or to move to the next menu (as illustrated). 4. Review the display to ensure that you have selected the correct configuration. 5. To return the display to operating mode, press the configuration button (see Step 1, p. 71). Note: The sensor will revert to operating mode if no buttons are pressed for 10 minutes. Setting Configuration Options Temperature • Choose Fahrenheit or Celsius • Choose the degree resolution (whole degrees, half degrees, or tenths of degrees). Setpoint System Fan Note: Not all fan options are available for all systems. Occupancy (timed override) . . . . . . dual setpoint no setpoint single setpoint no system options enabled auto/off/low med/high auto/off/ low/high auto/off off/high (on) off/low/high off/low/ med/high no fan options enabled (Default)

temperature (default) or setpoint. To select either option: 1. Verify that the sensor is in operating mode and at the home screen. 2. Press the up and down arrows for 3 seconds. The arrow indicates setpoint display, as shown in the figure. Locking or Unlocking Settings. You can lock or unlock the setpoint, system, or fan setting to prevent changes. To lock or unlock a setting: 1. Verify that the sensor is in operating mode and at the home screen. 2. Choose a setting to lock or unlock: • Select the setpoint by pressing the up or down arrow. • From the system menu press the down arrow to select the fan menu. Use the left or right arrow to choose the setting. 3. Press the left and right arrows for 4 seconds. Arrow indicates setpoint is shown on display Setpoint Fan menu

will appear on the display. If you press a keypad button to try change a locked setting, the locked symbol will flash. Replacing the Sensor Cover To replace the cover: 1. Hook the cover over the top of the back plate. Apply light pressure to the bottom of the cover until it snaps in place. 2. Install the security screw into the bottom of the cover (if desired). Sensor Operations Temporary Occupancy (Timed Override) Temporary occupancy (timed override) is available on model WDS. Temporary occupancy is selected for after-business-hours adjustment of temperature setting, fan settings, or heat/cool settings, when the system has changed to unoccupied mode. System control will revert to unoccupied after a pre-determined time period. Note: Not all systems support the occupancy function. Model WDS Sensor To request and cancel temporary occupancy on a model WDS sensor, see “Requesting Temporary Occupancy,” p. 78. End-of-Range Temperature Values Receiver: The end-of-range temperature limits of the receiver for all models are 32°F to 122°F (0°C to 50°C). The receiver cannot replicate temperature values outside this range. If the sensor transmits a temperature value to the receiver that is out of the receiver replication range, the receiver will “freeze” the output at the end-of-range values. This value will remain frozen until the transmitted temperature moves to between the end-of-range temperature limits. Sensor: The end-of-range temperature setpoint limits for the model WDS sensor is 50°F (10°C) to 89.6°F (32°C). Security screw

When power is applied to the receiver, one of the following sequences occurs. The sequence is dependent on the address setting and the association status of the receiver. Address set to 000 and receiver is not associated with a sensor • LED5 is constantly On, indicating power is applied and the receiver is functional. • All models: Zone temperature and cooling setpoint default to 72.5°F (22.5°C). WDS only: The heating setpoint defaults to 70.5°F (21.4°C) and the fan/system output will be 2230 Ω (see “Output Values—Failure and Default Modes of Operation,” p. 122). • Status LED3 will display a 2-blink pattern diagnostic (Table 39, p. 117). Address set from 001 to 999 and receiver is not associated with a sensor • LED5 is constantly On, indicating power is applied and the receiver is functional. • All models: Zone temperature and cooling setpoint default to 72.5°F (22.5°C). WDS only: The heating setpoint defaults to 70.5°F (21.4°C) and the fan/system output will be 2230 Ω (see “Output Values—Failure and Default Modes of Operation,” p. 122). • The receiver conducts an energy scan for 20 seconds to determine the clearest channel on which to operate. • LED3 flashes On every 2 seconds when it is ready to accept a sensor association request. When an association request is made by a sensor, the receiver instructs the sensor on which power level to operate. Then the receiver and sensor begin operation at the appropriate channel and power level (see “Observing the Receiver for Readiness to Associate,” p. 69). Address set from 001 to 999 (and not changed since most recent power-up) and receiver is associated with a sensor • LED5 is constantly On, indicating power is applied and the receiver is functional. • Zone temperature and setpoint default to 72.5°F (22.5°C). WDS only: Heating setpoint defaults to 70.5°F (21.4°C), Fan = Auto, System = Off. • The receiver waits for a broadcast transmission from its associated sensor. When a transmission is received, the receiver positions its zone temperature and setpoint outputs appropriately. • If the receiver does not receive a communicated signal from its associated sensor within 35 minutes, zone temperature and setpoint outputs fail, generating a unit controller alarm (see “Output Values—Failure and Default Modes of Operation,” p. 122). Note: Once a receiver communicates to a WTS sensor, the receiver disables (opens) its zone setpoint output indefinitely. Sensor Transmission Time and Temperature Variables Sensor transition time variables are as follows: • The maximum time between sensor temperature transmissions is 15 minutes. • The minimum time between sensor temperature transmissions is 30 seconds. • The minimum time for transmitting temperature setpoint changes is 10 seconds. Note: If a sensor transmits a message to the receiver and the receiver does not reply, the sensor will retransmit the message to the receiver every 30 seconds until communication to the receiver is re-established. Sensor temperature time variables are as follows: • The minimum change in zone temperature required to force a sensor transmission is: – 0.2°F (0.11°C) when the temperature range is between 60°F (15.6°C) and 80°F (26.7°C) – 0.5°F (0.28°C) when the temperature range is between 32°F (0°C) and 60°F (15.6°C) or between 80°F (26.7°C) and 122°F (50°C))

– 0.1°C for a model WDS sensor Operating Mode (Model WDS) This section describes how to operate the Trane wireless sensor, model WDS. Figure 20 shows an example of a model WDS that has been configured and is in operating mode. Changing Room Temperature Changing Heating and Cooling Room Temperature Settings (applies to some systems) Figure 20. Wireless sensor (model WDS) in operating mode . Keypad Test button Test symbols (appear only when Test button is pushed Occupancy indicator/Error code Temperature System settings (not available for fan-coil or Force-Flo units) Fan settings This symbol shows the current room temperature, or your setpoint selection while you are making an adjustment. 1. To increase the room temperature, press . To decrease the room temperature, press . 2. To confirm, press or wait 5 seconds. The display will return to the home screen. When you select a setpoint, this symbol appears. . Some systems allow you to select both heating and cooling room temperature settings. If your system has this option, this symbol appears when you adjust the temperature setting. 1. Press or to select the heating/cooling setting. 2. If in cooling mode, press to change to heating mode. If in heating mode, press to change to cooling mode. 3. Press or to select the heating/cooling setting. 4. To confirm, press or wait 5 seconds. The home screen will appear. When you adjust the cooling setting, the top arrow and snowflake flash. When you adjust the heating setting, the bottom arrow and flame flash.

Requesting Temporary Occupancy Error Codes Lock Symbol Testing Signal Strength Testing Battery Status Wireless Sensor Specifications The following table presents specifications for all models of the wireless sensor sets. Indicates that the fan will operate as needed to reach the selected temperature. 1. From the home screen, activate the fan setting menu by pressing and then . 2. Press or to choose the desired fan setting. 3. When the symbol for the desired setting appears, confirm your choice by • Pressing (the home screen will appear), or • Pressing or (the next menu will appear), or • Waiting five seconds. Indicates that the fan setting is On. The number of arrows indicates fan speed (3: high, 2: medium, 1: low). The example shown indicates a fan on high speed. Not all systems offer all three speeds. Indicates that the fan setting is Off. Select to request occupancy • If you need heating or cooling after normal business hours, you can “request” temporary occupancy by pressing and holding it for 2 seconds. The occupied symbol remains on the screen and the unoccupied symbol disappears. After 30 seconds, the unoccupied symbol will re-appear. • To cancel temporary occupancy, press and hold for 2 seconds. The unoccupied symbol will remain on the screen and the occupied symbol will disappear. After 30 seconds, the occupied symbol will re-appear. Select to cancel occupancy Indicates an error code If an error code (E0–E7) is displayed, technical assistance may be required. Indicates that a setting is locked The lock symbol appears if you try to adjust a setting that cannot be changed. Indicates excellent signal strength Indicates satisfactory signal strength Indicates poor signal strength Press the Test button to display the signal strength symbols. Indicates full battery power Indicates 50% of battery life left. Indicates 25% of battery life left. Replace batteries. Flashing symbol indicates that approximately 14 days of operation remain. Press the Test button to display the battery status symbols. Use only UL-listed non-rechargeable 1.5 V lithium AA batteries (Trane p/n X13770035010 or equivalent).

32ºF to 122ºF (0ºC to 50ºC) Receiver operating temperature -40ºF to 158ºF (-40ºC to 70ºC) Storage temperature -40ºF to 185ºF (-40ºC to 85°C) Storage and operating humidity range 5% to 95%, non-condensing Accuracy 0.5°F over a range of 55ºF to 85°F (12.8ºC to 29.4°C) Resolution 0.125ºF over a range of 60ºF to 80ºF (15.56ºC to 26.67°C) 0.25ºF when outside this range Setpoint functional range (WDS only) 50ºF to 89.6ºF (10ºC to 32ºC) Receiver voltage 24 V nominal ac/dc ±10% Receiver power consumption <1 VA Housing Polycarbonate/ABS blend, UV protected, UL 94-5VA flammability rating, suitable for application in a plenum Mounting 3.24 in (8.26 cm) for 2 mounting screws (supplied) Sensor battery (2) AA, 1.5 V, 2800 mAh, lithium, 5-year life, UL listed Range(a) Open range: 2,500 ft (762 m) (packet error rate = 2%) Usable: 200 ft (61 m) Typical: 75 ft (23 m) Output power 100 mW Radio frequency 2.4 GHz (IEEE Std 802.15.4-2003 compliant) (2405 to 2480 MHz, 5 MHz spacing) Radio channels 16 Address range 000 to 999 Minimum time between transmissions 30 seconds Maximum time between transmissions 15 minutes (a) Range values are estimated transmission distances for satisfactory operation. Actual distance is job specific and must be determined during site evaluation.

shown. United States compliance (all models) UL listed: UL 94-5VA Flammability rating UL 916: Energy management equipment FCC CFR47, Section 15.247 & Subpart E Digital Modulation Transmission with no SAR (FCC Identification TFP- 13651127) This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 20 cm separation distance: To comply with FCC’s RF exposure limits for general population/uncontrolled exposure, the antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. Canada compliance (all models) CSA22.2 No. 205-M1983 Signal Equipment Industry Canada (Certification no: IC: 6178A-13651127) Industry Canada statement: the term “IC” before the certification/registration number signifies only that the Industry Canada technical specifications were met. Section 14 of RSS-210: The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF field in excess of Health Canada limits for the general population. IEEE compliance for radio frequency range (all models) IEEE 802.15.4-2003, IEEE Standard for Information Technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements, Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low Rate Wireless Personal Area Networks (LR-WPANs)

are complete before unit startup. This does not replace the detailed instructions in the appropriate sections of this manual. Disconnect electrical power before performing this checklist. Always read the entire section carefully to become familiar with the procedures. �WARNING Hazardous Voltage w/Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer’s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Receiving Unit Location 1. Ensure the unit location is adequate for unit dimensions, ductwork, piping, and electrical connections. 2. Ensure access and maintenance clearances around the unit are adequate. Unit Mounting 1. Ensure unit is installed level. Component Overview 1. Ensure the fan rotates freely in the correct direction. 2. Ensure all unit access panels and air grilles are in place. 3. Verify that a clean air filter is in place. 4. Properly set the damper position to meet the fresh air requirement. Unit Piping 1. Properly vent the hydronic coil to allow water flow through the unit. 2. Units with deluxe piping package: Tighten unions adequately. 3. Set water flow to the unit properly if unit piping has the circuit setter valve. 4. Check strainers (if supplied) for debris after apply system water. 5. Install the auxiliary drain pan and route the main drain pan hoses to the auxiliary drain pan on vertical fan-coil units. 6. Verify the condensate drain piping is complete for the unit drain pan. 7. Ensure the drain pan and condensate line are not obstructed. Remove any foreign matter that may have fallen into the drain pan during installation. � Inspect unit and components for shipping damage. File damage claims immediately with the delivering carrier. � Check unit for missing material. Look for ship-with options and sensors that may be packaged separately from the main unit (see “Receiving and Handling,” p. 11). � Check nameplate unit data so that it matches the sales order requirements.

These operating conditions may be beyond the design parameters of the unit and may adversely affect the unit. � Check all electrical connections for tightness.

Refer to the Trane publication, CNT-IOP-1 (ComfortLink 10 Controller: Installation, Operation and Programming Guide) for Tracer ZN510 and CNT-SVX04A-EN for Tracer ZN520. The factory pre- programs the Tracer ZN510 and ZN520 with default values to control the temperature and unit airflow. Use Tracer Summit building automation system or Rover™ software to change the default values. Follow the procedure below to operate the Tracer ZN510 or ZN520 in a stand-alone operation: 1. Turn power on at the disconnect switch option. 2. Position the fan mode switch to either high, medium, low, or the auto position. 3. Rotate the setpoint dial on the zone sensor module to 55°F for cooling or 85°F for heating. The appropriate control valve will actuate assuming the following conditions: 1. Room temperature should be greater than 55°F and less than 85°F. 2. For a 2-pipe fan-coil unit with an automatic changeover sensor, the water temperature input is appropriate for the demand placed on the unit. For example, cooling operation is requested and cold water (5° lower than room temperature) flows into the unit. 3. Select the correct temperature setpoint. Note: Select and enable zone sensor temperature settings to prevent freeze damage to unit. General Information Relay (Daughter) Board The relay board is a new component on all models (except those with a unit-mounted, line-voltage fan speed switch) that replaces all the loose wires in the control box. It consolidates many control components onto one board, therefore making it easy to troubleshoot in the field. There is an LED on the board that indicates when power is supplied to the board. All connections are made to match up only with the applicable component to, thus prevent miswiring. Factory switches are pre-set and locked in place with lock-tight. The switch settings can be broken if field-modifications are needed. However, switches must be properly set for the unit to operate safely and properly. See Figure 21. Manual Fan Mode Switch The manual fan mode switch is available with a four-position switch (off-hi-med-lo) allows manual fan mode selection and is available unit- or wall-mounted. See Figure 22. Figure 21. Relay board

three 24-volt relays using a factory-wired transformer and relays to control the fan motor. Tracer ZN010 & ZN510 Tracer ZN010 is a stand-alone device that controls fan-coils and cabinet heaters. Tracer ZN510 can be stand-alone or use peer-to-peer communications. The controller is easily accessible in the control end panel for service. The control end panel is on the end of the unit opposite the piping. See Figure 23. Fan Mode Switch Operation Off Fan is turned off, two-position damper option spring-returns closed. Hi, Med, Lo Fan runs continuously at the selected speed. The two-position damper option opens to an adjustable mechanical stop position. Tracer ZN010 & ZN510 Operation Off Fan is off; control valves and fresh air damper option close. Low air temperature detection option is still active. Figure 22. Fan speed switch Figure 23. Tracer ZN010 board

Fan and fresh air damper cycle with control valve option to maintain setpoint temperature. In cooling mode, the fan cycles from off to medium and in heating mode it cycles from off to low. When no heating or cooling is required, the fan is off and the fresh air damper option closes. Low/Med/High (Continuous Fan) Fan operates continuously while control valve option cycles to maintain setpoint temperature. Fresh air damper option is open. Tracer ZN520 Operation Off Fan is off; control valve options and fresh air damper options close. The low air temperature detection option is still active. Auto Fan speed control in the auto setting allows the modulating (3-wire floating point) or 2–position control valve option and three-speed fan to work cooperatively to meet precise capacity requirement, while minimizing fan speed (motor/energy/acoustics ) and valve position (pump energy, chilled water reset ). As the capacity requirement increases at low fan speed, the water valve opens. When the low fan speed capacity switch point is reached, the fan switches to medium speed and the water valve repositions to maintain an equivalent capacity. The reverse sequence takes place with a decrease in required capacity. Low/Med/High The fan runs continuously at the selected speed and the valve option will cycle to meet setpoint.

Note: This section applies only to units with a Tracer ZN010 or ZN510 controller. Power-Up Sequence When 24 Vac power is initially applied to the Tracer ZN010 or ZN510, the following sequence occurs: 1. All outputs are controlled off. 2. Tracer ZN010 and ZN510 reads all input values to detemine initial values. 3. The random start time (0-25 seconds) expires. 4. Normal operation begins. Entering Water Temperature Sampling Function Both Tracer ZN010 and ZN510 use an entering water temperature sampling function to test for the correct water temperature for the unit operating mode. For all applications not involving changeover, the water temperature does not affect unit operation. The entering water temperature sampling function opens the main hydronic valve, waits no more than three minutes to allow the water temperature to stabilize, then measures the entering water temperature to see if the correct water temperature is available. The entering water must be five degrees or more above the space temperature to allow hydronic heating and five degrees or more below the space temperature to allow hydronic cooling. If the correct water temperature is available, the unit begins normal heating or cooling operation. If the measured entering water temperature is too low or high, the controller closes the valve and waits 60 minutes before attempting to sample the entering water. Refer to Table 15. Binary Inputs BIP1: Low Temperature Detection Option The factory hard wires the low temperature detection sensor to binary input #1 (BIP1) on the Tracer ZN010 and ZN510. The sensor defaults normally closed (N.C.), and will trip off the unit on a low temperature diagnostic when detecting low temperature. In addition, the Tracer ZN010 and ZN510 control unit devices as listed below: Fan: Off Valves: Open Electric heat: Off Damper: Closed Note: See “Diagnostics,” p. 107 for more information. Table 15. Unit mode as related to water temperature Unit Type EWT Sensor Required? Coil Water Temperature 2-pipe changeover Yes COOLS if: Space temp - EWT ≥ 5°F HEATS if: EWT - space temp ≥ 5°F 4-pipe changeover Yes COOLS if: Space temp - EWT ≥ 5°F HEATS if: EWT - space temp≥ 5°F 2-pipe heating only No Hot water assumed 2-pipe cooling only No Cold water assumed 4-pipe heat/cool No Cold water assumed in main coil Hot water assumed in aux. coil

The factory hard wires the condensate overflow sensor to binary input #2 (BIP2) on the Tracer ZN010 and ZN510. The sensor defaults normally closed (N.C.), and will trip off the unit on a condensate overflow diagnostic if condensate reaches the trip point. In addition, the Tracer ZN010 and ZN510 control unit devices as listed below: Fan: Off Valves: Closed Electric heat: Off BIP3: Occupancy Sensor Binary input #3 (BIP3) on Tracer ZN010 and ZN510 is available for field- wiring an occupancy sensor, such as a binary switch or a timeclock, to detect occupancy. The sensor can be either normally open or normally closed. Refer to Table 16. Binary Outputs Refer to Table 17 for the Tracer ZN010 and ZN510’s six binary outputs. Both Tracer ZN010 and ZN510 accept a maximum of five analog inputs. Refer to Table 18, p. 88. Table 16. Occupancy sensor state table Sensor Type Sensor Position Unit Occupancy Mode Normally open Open Occupied Normally open Closed Unoccupied Normally closed Open Unoccupied Normally closed Closed Occupied Table 17. Binary outputs Binary output Description Pin BOP1 Fan high speed J1-1 BOP2 Fan medium speed J1-2 BOP3 Fan low speed J1-4 BOP4 Main valve J1-5 BOP5 Auxiliary valve/electric heat J1-6 BOP6 2-position fresh air damper J1-7 Notes: 1. In a four-pipe application, BOP4 is used for cooling and BOP5 is used for heating. 2. If no valves are ordered with the unit, the factory defaults for the Tracer ZN010 and ZN510 controller are: BOP4 configured as normally closed BOP5 configured as normally open 3. If the fresh air damper option is not ordered on the unit, BOP6 will be configured as none.

1. Space temperature measurement (10 KΩ thermistor) 2. Local setpoint 3. Fan mode switch Wall-mounted zone sensors include a thermistor as a component of the internal printed circuit board. Unit mounted zone sensors use a sensor placed in the unit’s return air stream. Each zone sensor is equipped with a thumbwheel for setpoint adjustment. Fan Mode Switch The zone sensor may be equipped with a fan mode switch. The fan mode switch offers selections of off, low, medium, high, or auto. Supply Fan Operation Refer to Table 19 for fan mode operation. Tracer ZN010 and ZN510 will operate in either continuous fan or fan cycling mode. The fan cycles when the fan mode switch is placed in auto. The fan runs continuous when placed in the high, medium, or low position. Use Rover, Trane’s installation and service tool, to change auto defaults. Table 18. Analog inputs Analog Input Description Application Zone Space temperature Space temperature detection Set Local setpoint Thumbwheel setpoint Fan Fan mode input Zone sensor fan switch Analog input 1 (AI1) Entering water temperature Entering water temperature detection Analog input 2 (AI2) Discharge air temperature Discharge air temperature detection Notes: 1. 1.The zone sensor, entering water temperature sensor, and the discharge air temperature sensor are 10 KΩ thermistors. Figure 28, p. 113 provides the resistance-temperature curve for these thermistors. 2. Zone sensor: Wall-mounted sensors include a thermistor soldered to the sensor’s circuit board Unit mounted sensors include a return air sensor in the unit’s return air stream. 3. Changeover units include an entering water temperature sensor. Table 19. Fan mode operation Heating Mode Cooling Mode Fan mode Occupied Unoccupied Occupied Unoccupied Off Off Off Off Off Low Low Off/high(a) Low Off/high(a) Medium Medium Off/high(a) Medium Off/high(a) High High Off/high(a) High Off/high(a) Auto Continuous Heat default Off/high(a) Cool default Off/high(a) Cycling off/heat default Off/high(a) Off/cool default Off/high(a) Notes: 1. During the transition from off to any fan speed but high, Tracer ZN010 and ZN510 automatically starts the fan on high speed and runs for three seconds before transitioning to the selected speed (if it is other than high). This provides enough torque to start all fan motors from the off position. 2. When the heating output is controlled off, Tracer ZN010 and ZN510 automatically controls the fan on for an additional 30 seconds. This delay allows the fan to dissipate any residual heat from the heating source, such as electric heat.

The Tracer ZN520 operates the fan in the following modes: 1. occupied 2. unoccupied 3. occupied standby 4. occupied bypass 5. Tracer Summit with supply fan control Occupied When the controller is in the occupied mode, the unit attempts to maintain the space temperature at the active occupied heating or cooling setpoint, based on the measured space temperature, the discharge air temperature, the active setpoint, and the proportional/integral control algorithm. The modulating control algorithm used when occupied or in occupied standby is described in the following sections. Additional information related to the handling of the controller setpoints can be found in the previous Setpoint operation section. Unoccupied Mode When the controller is in the unoccupied mode, the controller attempts to maintain the space temperature at the stored unoccupied heating or cooling setpoint, based on the measured space temperature, the active setpoint and the control algorithm, regardless of the presence of a hardwired or communicated setpoint. Similar to other configuration properties of the controller, the locally stored unoccupied setpoints can be modified using Rover™ service tool. In unoccupied mode, a simplified zone control algorithm is run. During the cooling mode, when the space temperature is above the cool setpoint, the primary cooling capacity operates at 100%. If more capacity is needed, the supplementary cooling capacity turns on (or opens to 100%). During the heating mode, when the space temperature is below the heat setpoint, the primary heating capacity turns on. All capacity is turned off when the space temperature is between the unoccupied cooling and heating setpoints. Note that primary heating or cooling capacity is defined by unit type and whether heating or cooling is enabled or disabled. For example, if the economizer is enabled and possible, it will be the primary cooling capacity. If hydronic heating is possible, it will be the primary heating capacity. (a) Whenever two states are listed for the fan: The first state (off) applies when there is not a call for heating or cooling. The second state (varies) applies when there is a call for heating or cooling. The heat default is factory configured for low fan speed, and the cool default is medium. Table 20. Valid operating range and factory default setpoints Setpoint/parameter Default Setting Valid Operating Range Unoccupied cooling setpoint 85°F 40°F to 115°F Occupied cooling setpoint 74°F 40°F to 115°F Occupied heating setpoint 71°F 40°F to 115°F Unoccupied heating setpoint 60°F 40°F to 115°F Cooling setpoint high limit 110°F 40°F to 115°F Cooling setpoint low limit 40°F 40°F to 115°F Heating setpoint high limit 105°F 40°F to 115°F Heating setpoint low limit 40°F 40°F to 115°F Power-up control wait 0 sec 0 sec to 240 sec

The controller can be placed into the occupied standby mode when a communicated occupancy request is combined with the local (hardwired) occupancy binary input signal. When the communicated occupancy request is unoccupied, the occupancy binary input (if present) does not affect the controller’s occupancy. When the communicated occupancy request is occupied, the controller uses the local occupancy binary input to switch between the occupied and occupied standby modes. During occupied standby mode, the controller’s economizer damper position goes to the economizer standby minimum position. The economizer standby minimum position can be changed using Rover service tool. In the occupied standby mode, the controller uses the occupied standby cooling and heating setpoints. Because the occupied standby setpoints typically cover a wider range than the occupied setpoints, the Tracer ZN520 controller reduces the demand for heating and cooling the space. Also, the outdoor air economizer damper uses the economizer standby minimum position to reduce the heating and cooling demands. When no occupancy request is communicated, the occupancy binary input switches the controller’s operating mode between occupied and unoccupied. When no communicated occupancy request exists, the unit cannot switch to occupied standby mode. Occupied Bypass Mode The controller can be placed in occupied bypass mode by either communicating an occupancy request of Bypass to the controller or by using the timed override On button on the Trane zone sensor. When the controller is in unoccupied mode, you can press the On button on the zone sensor to place the controller into occupied bypass mode for the duration of the bypass time (typically 120 minutes). Occupancy Sources There are four ways to control the controller’s occupancy: • Communicated request (usually provided by the building automation system or peer device) • By pressing the zone sensor’s timed override On button • Occupancy binary input • Default operation of the controller (occupied mode) A communicated request from a building automation system or another peer controller can change the controller’s occupancy. However, if communication is lost, the controller reverts to the default operating mode (occupied) after 15 minutes (configurable, specified by the “receive heartbeat time”), if no local hardwired occupancy signal exists. A communicated request can be provided to control the occupancy of the controller. Typically, the occupancy of the controller is determined by using time-of-day scheduling of the building automation system. The result of the time-of-day schedule can then be communicated to the unit controller. Tracer Summit with Supply Fan Control If the unit is communicating with Tracer Summit and the supply fan control programming point is configured for Tracer (the factory configures as local), Tracer Summit will control the fan regardless of the fan mode switch position. When the fan mode switch is set to Off or when power is restored to the unit, all Tracer ZN520 lockouts (latching diagnostics) are manually reset. The last diagnostic to occur is retained until the unit power is disconnected. Refer to Trane publication, CNT-SVX04A-EN (Tracer ZN.520 Unit Controller: Installation, Operation and Programming Guide) for specific instructions regarding the procedure for running the Tracer ZN520.

occupied standby setpoints. During the cooling mode, the Tracer ZN520 controller attempts to maintain the space temperature at the active cooling setpoint. Based on the controller’s occupancy mode, the active cooling setpoint is one of the following: • Occupied cooling setpoint • Occupied standby cooling setpoint • Unoccupied cooling setpoint The controller uses the measured space temperature, the active cooling setpoint, and discharge air temperature along with the control algorithm to determine the requested cooling capacity of the unit (0%–100%). The outputs are controlled based on the unit configuration and the required cooling capacity. To maintain space temperature control, the Tracer ZN520 cooling outputs (modulating hydronic valve, two-position hydronic valve, or outdoor air economizer damper) are controlled based on the cooling capacity output. The cooling output is controlled based on the cooling capacity. At 0% capacity, all cooling capacities are off and the damper is at minimum position. Between 0% and 100% capacity, the cooling outputs are controlled according to modulating valve logic (modulating valves) or cycled on (2-position valves). As the load increases, modulating outputs open further and binary outputs are energized longer. At 100% capacity, the cooling valve or damper is fully open (modulating valves) or on continuously (and 2-position valves). Unit diagnostics can affect fan operation, causing occupied and occupied standby fan operation to be defined as abnormal. Refer to the Troubleshooting section for more information about abnormal fan operation. The Tracer ZN520 controller operates the supply fan continuously when the controller is in the occupied and occupied standby modes, for either heating or cooling. The controller only cycles the fan off with heating and cooling capacity in the unoccupied mode. The economizer is used for cooling purposes whenever the outdoor temperature is below the economizer enable setpoint and there is a need for cooling. The economizer is used first to meet the space demand, and other forms of cooling are used if the economizer cannot meet the demand alone. See modulating outdoor air damper operation for additional information. Cascade cooling control initiates a discharge air tempering function if the discharge air temperature falls below the discharge air temperature control low limit, all cooling capacity is at minimum, and the discharge control loop determines a need to raise the discharge air temperature. The controller then provides heating capacity to raise the discharge air temperature to its low limit. Discharge Air Tempering The discharge air tempering function enables when cold outdoor air is brought in through the outdoor air damper, causing the discharge air to fall below the discharge air temperature control low limit. The controller exits the discharge air tempering function when heat capacity has been at 0% for five minutes. Heating Operation During heating mode, the Tracer ZN520 controller attempts to maintain the space temperature at the active heating setpoint. Based on the occupancy mode of the controller, the active heating setpoint is one of the following: • Occupied heating • Occupied standby heating • Unoccupied heating During dehumidification in the heating mode, the controller adjusts the heating setpoint up to the cooling setpoint. This reduces the relative humidity in the space with a minimum of energy usage.

air temperature, along with the control algorithm, to determine the requested heating capacity of the unit (0%–100%). The outputs are controlled based on the unit configuration and the required heating capacity. Unit diagnostics can affect the Tracer ZN520 controller operation, causing unit operation to be defined as abnormal. Refer to the Troubleshooting section for more information about abnormal unit operation. The heating output is controlled based on the heating capacity. At 0% capacity, the heating output is off continuously. Between 0% and 100% capacity, the heating output is controlled according to modulating valve logic (modulating valves) or cycled on (two-position valves). As the load increases, modulating outputs open further and binary outputs are energized longer. At 100% capacity, the heating valve is fully open (modulating valves) or on continuously (two-position valves). The Tracer ZN520 fan output(s) normally run continuously during the occupied and occupied standby modes, but cycle between high and off speeds with heating/cooling during the unoccupied mode. When in the occupied mode or occupied standby mode and the fan speed is set at the high, medium, or low position, the fan runs continuously at the selected speed. Refer to the Troubleshooting section for more information on abnormal fan operation. When the unit’s supply fan is set to auto, the controller’s configuration determines the fan speed when in the occupied mode or occupied standby mode. The fan runs continuously at the configured heating fan speed or cooling fan speed. For all fan speed selections except off, the fan cycles off during unoccupied mode. The economizer outdoor air damper is never used as a source of heating. Instead, the economizer damper (when present) is only used for ventilation; therefore, the damper is at the occupied minimum position in the occupied mode. The damper control is primarily associated with occupied fan operation. Fan Mode Operation For multiple fan speed applications, the Tracer ZN520 controller offers additional fan configuration flexibility. Separate default fan speeds for heating and cooling modes can be configured. The fan runs continuously for requested speeds (off, high, medium, or low). When the fan mode switch is in the Auto position or a hardwired fan mode input does not exist, the fan operates at the default configured speed. See Table 21 for default fan configuration for heat and cool mode. During unoccupied mode, the fan cycles between high speed and off with heating and cooling fan modes. If the requested speed is off, the fan always remains off. During dehumidification, when the fan is on Auto, the fan speed can switch depending on the error. Fan speed increases as the space temperature rises above the active cooling setpoint. Additional flexibility built into the controller allows you to enable or disable the local fan switch input. The fan mode request can be either hardwired or communicated to the controller. When both Table 21. Fan configuration Auto Fan Operation Fan Speed Default Heating Continuous Off Low Medium High Cooling Continuous Off Low Medium High

Table 23, and Table 24. Continuous Fan Operation During occupied and occupied standby modes, the fan normally is on. For multiple speed fan applications, the fan normally operates at the selected or default speed (off, high, medium, or low). When fan mode is auto, the fan operates at the default fan speed. During unoccupied mode, the controller controls the fan off. While unoccupied, the controller heats and cools to maintain the unoccupied heating and cooling setpoints. In unoccupied mode, the fan is controlled on high speed only with heating or cooling. The unit fan is always off during occupied, occupied standby, and unoccupied modes when the unit is off due to a diagnostic or when the unit is in the off mode due to the local zone sensor module, a communicated request, or the default fan speed (off). Table 22. Local fan switch enabled Communicated Fan Speed Input Fan Switch (Local) Fan Operation Off Ignored Off Low Ignored Low Medium Ignored Medium High Ignored High Auto Off Low Medium High Auto Off Low Medium High Auto (configured default, determined by heat/cool mode) Table 23. Fan operation in heating and cooling modes Fan Mode Heating Cooling Occ. Unocc. Occ. Unocc. Off Off Off Off Off Low Low Off/high Low Off/high Medium Med Off/high Med Off/high High High Off/high High Off/high Auto Default fan sp. Off/high Default fan sp. Off/high Table 24. Local fan switch disabled or not present Communicated Fan Speed Input Fan Operation Off Off Low Low Medium Medium High High Auto (or not present) Auto (fan runs at the default speed)

priority. Fan Cycling Operation Tracer ZN520 does not support fan cycling in occupied mode. The fan cycles between high speed and off in the unoccupied mode only. The controller’s cascade control algorithm requires continuous fan operation in the occupied mode. Fan Off Delay When a heating output is controlled off, the Tracer ZN520 controller automatically holds the fan on for an additional 30 seconds. This 30-second delay gives the fan time to blow off any residual heat from the heating source, such as a steam coil. When the unit is heating, the fan off delay is normally applied to control the fan; otherwise, the fan off delay does not apply. Fan Start on High Speed On a transition from off to any other fan speed, the Tracer ZN520 controller automatically starts the fan on high speed and runs the fan at high speed for 0.5 seconds. This provides the ample torque required to start all fan motors from the off position. Entering Water Temperature Sampling Function Only units using the main hydronic coil for both heating and cooling (2-pipe changeover and 4-pipe changeover units) use the entering water temperature sampling function. Two-pipe changeover and 4-pipe changeover applications allow the main coil to be used for heating and for cooling; therefore, these applications require an entering water temperature sensor. When three-way valves are ordered with a Tracer ZN520 control, the controller is factory- configured to disable the entering water temperature sampling function, and the entering water sensor is mounted in the proper location. Disabling entering water temperature sampling eliminates unnecessary water flow through the main coil when three-way valves are used. The controller invokes entering water temperature sampling only when the measured entering water temperature is too cool to heat or too warm to cool. Entering water is cold enough to cool when it is five degrees below the measured space temperature. Entering water is warm enough to heat when it is five degrees above the measured space temperature. When the controller invokes the entering water temperature sampling function, the unit opens the main hydronic valve for no more than three minutes before considering the measured entering water temperature. An initial stabilization period is allowed to flush the coil. This period is equal to 30 seconds plus 1/2 the valve stroke time. Once this temperature stabilization period has expired, the controller compares the entering water temperature against the effective space temperature (either hardwired or communicated) to determine whether the entering water can be used for the desired heating or cooling. If the water temperature is not usable for the desired mode, the controller continues to compare the entering water temperature against the effective space temperature for a maximum of three minutes. The controller automatically disables the entering water temperature sampling and closes the main hydronic valve when the measured entering water exceeds the high entering water temperature limit (110°F). When the entering water temperature is warmer than 110°F, the controller assumes the entering water temperature is hot because it is unlikely the coil would drift to a high temperature unless the actual loop temperature was very high. If the entering water temperature is unusable — too cool to heat or too warm to cool — the controller closes the hydronic valve and waits 60 minutes before initializing another sampling. If the controller determines the entering water temperature is valid for heating or cooling, it resumes normal heating/cooling control and effectively disables entering water temperature sampling until it is required.

The Tracer ZN520 controller supports one or two-stage electric heat operation for heating. To control the space temperature, electric heat is cycled to control the discharge air temperature. The rate of cycling is dependent upon the load in the space and the temperature of the incoming fresh air from the economizer (if any). Two-pipe changeover units with electric heat use the electric heat only when hot water is not available. Manual Fresh Air Damper Units with the manual fresh air damper option ship with the damper in the closed position, which is adjustable from zero to 100% in 25% increments. To adjust the position, first remove the air filter to expose the damper stop screw on the control panel end. Relocate the stop screw to the appropriate position. Then loosen the stop screw wingnut and adjust the linkage. Economizer Damper Option With a valid outdoor air temperature (either hardwired or communicated), Tracer ZN520 uses the modulating economizer damper as the highest priority source of cooling. Economizer operation is only possible through the use of a modulating damper. Economizing is possible during the occupied, occupied standby, unoccupied, and occupied bypass modes. The controller initiates the economizer function if the outdoor air temperature is cold enough to be used as free cooling capacity. If the outdoor air temperature is less than the economizer enable setpoint (absolute dry bulb), the controller modulates the outdoor air damper (between the active minimum damper position and 100%) to control the amount of outdoor air cooling capacity. When the outdoor air temperature rises 5°F above the economizer enable point, the controller disables economizing and moves the outdoor air damper back to its predetermined minimum position based on the current occupancy mode or communicated minimum damper position. Dehumidification Dehumidification is possible when mechanical cooling is available, the heating capacity is located in the reheat position, and the space relative humidity setpoint is valid.The controller starts dehumidifying the space when the space humidity exceeds the humidity setpoint. The controller continues to dehumidify until the sensed humidity falls below the setpoint minus the relative humidity offset.The controller uses the cooling and reheat capacities simultaneously to dehumidify the space. While dehumidifying, the discharge air temperature is controlled to maintain the space temperature at the current setpoint. A typical scenario involves high humidity and high temperature load of the space.The controller sets the cooling capacity to 100% and uses the reheat capacity to warm the discharge air to maintain space temperature control. Dehumidification may be disabled via Tracer or configuration. Note: If the unit is in the unoccupied mode, the dehumidification routine will not operate. Table 25. Relationship between outdoor temperature sensors and damper position Outdoor Air Temp. Modulating Outdoor Air Damper Occupied or Occupied Bypass Occupied Standby Unoccupied None or invalid Open to occupied minimum position Open to occupied standby minimum position Closed Failed Open to occupied minimum position Open to occuied standby minimum position Closed Present and economizing feasible Economizing minimum postion to 100% Economizing between occupied standby minimum position to 100% Open & economizing when unit is operating, closed Present & economizing not feasible Open to occupied minimum position Open to occupied standby minimum position Closed

(setpoint, heat/cool mode, fan request, space temperature, etc.) to and from other controllers on the communication link, with or without the existence of a building automation system. This applies to applications where multiple unit controllers share a single space temperature sensor (for rooms with multiple units but only one zone sensor) for both standalone (with communication wiring between units) and building automation system applications. For this application you will need to use the Rover service tool. For more information on setup, refer to the Trane publication EMTX-SVX01G-EN, or the most recent version. Binary Inputs The Tracer ZN520 controller has four available binary inputs (see Table 26). Normally, these inputs are factory-configured for the following functions: • Binary input 1: Low temperature detection (freezestat) • Binary input 2: Condensate overflow • Binary input 3: Occupancy/ Generic • Binary input 4: Fan status Note: The generic binary input can be used with a Tracer Summit® building automation system only. Each binary input default configuration (including normally open/closed) is set at the factory. However, you can configure each of the four binary inputs as normally open or normally closed. The controller will be set properly for each factory-supplied binary input end-device. When no device is connected to the input, configure the controller’s input as not used. Binary Outputs Binary outputs are configured to support the following: • Three fan stages (when one or two fan stages are present, medium fan speed can be configured as exhaust fan) • One hydronic cooling stage • One hydronic heating stage (dehumidification requires this to be in the reheat position) Table 26. Binary input configurations Binary Input Description Configuration Controller Operation Contact Closed Contact Open BI 1 Low temperature detection(a) (a) During low temperature, condensate overflow, and fan status diagnostics, the Tracer ZN520 control disables all normal unit operation of the fan, valves, and damper. Normally closed Normal Diagnostic(b) (b) Table 27, p. 97 shows the controller’s response to low temperature detection, condensate overflow, and fan status diag- nostics. BI 2 Condensate overflow(a) Normally closed Normal Diagnostic(b) BI 3 Occupancy Normally open Unoccupied Occupied BI 3 Generic binary input Normally open Normal(c) (c) The generic binary input does not affect unit operation. A building automation system reads this input as a generic binary input. Normal(c) BI 4 Fan status(a) Normally open Normal Diagnostic(d) (d) If the fan mode input is in the off position or the controller is in the unoccupied mode with the fan off, the fan status input will be open. A diagnostic will not be generated when the controller commands the fan off. A diagnostic will only be generated if the fan status input does not close after one minute from energizing a fan output or any time the input is open for one minute. The controller waits up to one minute after energizing a fan output to allow the differential pressure to build up across the fan. Note: The occupancy binary input is for standalone unit controllers as an occupied/unoccupied input. However, when the controller receives a communicated occupied/unoccupied request, the communicated request has priority over the hardwired input.

• One or two-stage electric heat (dehumidification requires this to be in the reheat position) • Face and bypass damper • Modulating outdoor air damper • One baseboard heat stage For more information, see Table 27. Table 27. Binary output configuration Binary Output Configuration J1-1 Fan high J1-2 Fan medium J1-3 Fan low J1-4 (Key) J1-5 Cool valve—open, or 2-position valve(a) (a) For Tracer ZN520 units configured and applied as 2-pipe hydronic heat/cool changeover, terminals J1-5 and J1-6 are used to control the primary valve for both heating and cooling. For Tracer ZN520 units configured and applied as 2-pipe hydronic heat/cool changeover with electric heat, terminals J1-5 and J1-6 are used to control the primary valve (for both cooling and heating), and terminals J1-9 and J1-10 are used only for the electric heat stage. For those 2-pipe changeover units, electric heat will not be energized while the hydronic supply is hot (5° or more above the space temperature). J1-6 Cool valve—close Note 1 J1-9 Heat valve—open, or 2 position valve, or 1st electric heat stage(a) J1-10 Heat valve—close or 2nd Electric heat stage(a) J1-11 Fresh air damper—open J1-12 Fresh air damper—close TB4-1 Generic/baseboard heat output TB4-2 24 Vac

• Space temperature measurement (10kΩ thermistor) • Local setpoint (either internal or external on the zone sensor module) • Fan switch • Timed override (On) and Cancel timed override • Communication jack Space Temperature Measurement Trane zone sensors use a 10kΩ thermistor to measure the space temperature. Typically, zone sensors are wall-mounted in the room and include a space temperature thermistor. As an option, the zone sensor can be unit-mounted with a separate space temperature thermistor located in the unit’s return air stream. If both a hardwired and communicated space temperature value exist, the controller ignores the hardwired space temperature input and uses the communicated value. External Setpoint Adjustment Zone sensors with an external setpoint adjustment (1kΩ) provide the Tracer ZN520 controller with a local setpoint (50°F to 85°F or 10°C to 29.4°C). The external setpoint is exposed on the zone sensor’s front cover. Table 28. Analog inputs Description Terminals Function Range Zone TB3-1 Space temperature input 5°F to 122°F (-15°C to 50°C) Ground TB3-2 Analog ground NA Set TB3-3 Setpoint input 40°F to 115°F (4.4°C to 46.1°C) Fan B3-4 Fan switch input 4821 to 4919 W (off) 2297 to 2342 W (auto) 10593 to 10807 W (low) 13177 to 13443 W (medium) 15137 to 16463 W (high) Ground TB3-6 Analog ground NA Analog input 1 J3-1 Entering water temperature -40°F to 212°F (-40°C to 100°C) J3-2 Analog ground NA Analog input 2 J3-3 Discharge air temperature -40°F to 212°F (-40°C to 100°C) J3-4 Analog ground NA Analog input 3 J3-5 Fresh air temp/generic temp -40°F to 212°F (-40°C to 100°C) J3-6 Analog ground NA Analog input 4 J3-7 Universal input 0% to 100% Generic 4–20mA 0% to 100% Humidity 0 to 2000 ppm CO2 J3-8 Analog ground NA Ground J3-9 Analog ground NA Notes: 1. The zone sensor, entering water temperature sensor, discharge air sensor, and the outside air temperature sensor are 10KΩ thermistors. 2. Zone sensor: Wall-mounted sensors include a thermistor soldered to the sensor’s circuit board. Unit mounted sensors include a return air sensor in the units return air stream. 3. Changeover units include an entering water temperature sensor.

calculated based on the hardwired setpoint value, the configured setpoints, and the active mode of the controller. The hardwired setpoint is used with the controller’s occupancy mode (occupied, occupied standby, or unoccupied), the heating or cooling mode, the temperature deadband values, and the heating and cooling setpoints (high and low limits) to determine the controller’s active setpoint. When a building automation system or other controller communicates a setpoint to the controller, the controller ignores the hardwired setpoint input and uses the communicated value. The exception is the unoccupied mode, when the controller always uses the stored default unoccupied setpoints. After the controller completes all setpoint calculations, based on the requested setpoint, the occupancy mode, the heating and cooling mode, and other factors, the calculated setpoint is validated against the following setpoint limits: • Heating setpoint high limit • Heating setpoint low limit • Cooling setpoint high limit • Cooling setpoint low limit These setpoint limits only apply to the occupied and occupied standby heating and cooling setpoints. These setpoint limits do not apply to the unoccupied heating and cooling setpoints stored in the controller’s configuration. When the controller is in unoccupied mode, it always uses the stored unoccupied heating and cooling setpoints.The unit can also be configured to enable or disable the local (hardwired) setpoint. This parameter provides additional flexibility to allow you to apply communicated, hardwired, or default setpoints without making physical changes to the unit. Similar to hardwired setpoints, the effective setpoint value for a communicated setpoint is determined based on the stored default setpoints (which determines the occupied and occupied standby temperature deadbands) and the controller’s occupancy mode. Fan Switch The zone sensor fan switch provides the controller with an occupied (and occupied standby) fan request signal (Off, Low, Medium, High, Auto). If the fan control request is communicated to the controller, the controller ignores the hardwired fan switch input and uses the communicated value. The zone sensor fan switch input can be enabled or disabled through configuration using the Rover service tool. If the zone sensor switch is disabled, the controller resorts to its stored configuration default fan speeds for heating and cooling, unless the controller receives a communicated fan input. When the fan switch is in the off position, the controller does not control any unit capacity. The unit remains powered and all outputs drive to the closed position. Upon a loss of signal on the fan speed input, the controller reports a diagnostic and reverts to using the default fan speed. On/Cancel Buttons Momentarily pressing the on button during unoccupied mode places the controller in occupied bypass mode for 120 minutes. You can adjust the number of minutes in the unit controller configuration using Rover service tool. The controller remains in occupied bypass mode until the override time expires or until you press the Cancel button. Communication Jack Use the RJ-11 communication as the connection point from Rover™ service tool to the communication link—when the communication jack is wired to the communication link at the controller. By accessing the communication jack via Rover™, you can access any controller on the link.

link is applied between unit controllers and a building automation system. Communication also is possible via Rover, Trane’s service tool. Peer-to-peer communication across controllers is possible even when a building automation system is not present. You do not need to observe polarity for LonTalk communication links. The controller provides six 0.25-inch quick-connect terminals for the LonTalk communication link connections, as follows: • Two terminals for communication to the board • Two terminals for communication from the board to the next unit (daisy chain) • Two terminals for a connection from the zone sensor back to the controller Table 29. Zone sensor wiring connections TB1 Description 1 Space temperature 2 Common 3 Setpoint 4 Fan mode 5 Communications 6 Communications