Master 9369651014 Installation Instruction Sheet

INSTALLATION INSTRUCTION SHEET (PART NO. 9369651014) IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operating stand- ards. As the installer or service person, it is an important part of your job to install or service the system so it operates safely and efficiently. For safe installation and trouble-free operation, you must: • Carefully read this instruction booklet before beginning. • Follow each installation or repair step exactly as shown. • Observe all local, state, and national electrical codes. • Pay close attention to all danger, warning, and caution notices given in this manual. This symbol refers to a hazard or un- safe practice which can result in severe personal injury or death. This symbol refers to a hazard or un- safe practice which can result in per- sonal injury and the potential for prod- uct or property damage. • Hazel alerting symbols If Necessary, Get Help These instructions are all you need for most installation sites and main- tenance conditions. If you require help for a special problem, contact our sales/service outlet or your certified dealer for additional instruc- tions. In Case of Improper Installation The manufacturer shall in no way be responsible for improper instal- lation or maintenance service, including failure to follow the instruc- tions in this document. SPECIAL PRECAUTIONS When Wiring •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM. • Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked. • Highly dangerous electrical voltages are used in this system. Care- fully refer to the wiring diagram and these instructions when wir- ing. Improper connections and inadequate grounding can cause accidental injury or death. • Ground the unit following local electrical codes. • Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard. When Transporting •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers. When Installing... •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ...In a Ceiling or Wall Make sure the ceiling/wall is strong enough to hold the unit’s weight. It may be necessary to construct a strong wood or metal frame to provide added support. ...In a Room Properly insulate any tubing run inside a room to prevent “sweating” that can cause dripping and water damage to walls and floors. ...In Moist or Uneven Locations Use a raised concrete pad or concrete blocks to provide a solid, level foundation for the outdoor unit. This prevents water damage and ab- normal vibration. ...In an Area with High Winds Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle. ...In a Snowy Area (for Heat Pump-type Systems) Install the outdoor unit on a raised platform that is higher than drift- ing snow. Provide snow vents. When Connecting Refrigerant Tubing •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• • Keep all tubing runs as short as possible. • Use the flare method for connecting tubing. • Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free connection. • Check carefully for leaks before starting the test run. NOTE: Depending on the system type, liquid and gas lines may be either narrow or wide. Therefore, to avoid confusion the refrigerant tubing for your particular model is specified as either “small” or “large” rather than as “liquid” or “gas”. When Servicing •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• • Turn the power OFF at the main circuit breaker panel before open- ing the unit to check or repair electrical parts and wiring. • Keep your fingers and clothing away from any moving parts. • Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced. • After installation, explain correct operation to the customer, us- ing the operating manual. WARNING CAUSION Electrical Safety alert ENGLISH

how to install the air conditioning system. Please read over the en- tire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. 1. TYPE OF COPPER PIPE AND INSULATION MATERIAL Copper tubing for connecting the outdoor unit to the indoor unit and insulation material is available for purchase locally. When you pur- chase them, please specify the following. (1) Deoxidized annealed copper pipe for refrigerant piping as: Table 1 Small pipe Large pipe Outer diameter Thickness Outer diameter Thickness 1/4” (6.35 mm) 1/32” (0.8 mm) 1/2”(12.7 mm) 1/32” (0.8 mm) Cut each pipe to the appropriate length + 12” (30 cm) to 16” (40 cm) to dampen vibration between units. (2) Foamed polyethylene insulation for copper pipes as required to precise length of piping. Wall thickness of the insulation should not be less than 5/16” (8 mm). (3) Use insulated copper wire for field wiring. CAUTION Check local electrical codes and regulations before obtaining wire. Also, check any specified instruc- tions or limitations. 2. ADDITIONAL MATERIALS REQUIRED FOR INSTALLATION (1) Refrigeration (armored) tape (2) Insulated staples or clamps for connecting wire (See your local electrical codes.) (3) Putty (4) Refrigeration lubricant (5) Clamps or saddles to secure refrigerant piping 3. OPERATING RANGE Table 2 Temperature INDOOR OUTDOOR Maximum 90 °F (35 °C) DB humidity about 80% or less 110 °F(43.3 °C) DB Cooling Minimum 65 °F (18 °C) DB 32 °F(0 °C) DB STANDARD ACCESSORIES The following installation accessories are supplied. Use them as required. INDOOR UNIT ACCESSORIES UNIT A1, A2 Name and Shape Wall hook bracket Wall cap Remote control unit Battery (penlight) Remote control unit holder Cloth tape Tapping screw (big) (ø4 × 25) Tapping screw (small) (ø3 × 12) Seal A UNIT B Name and Shape Wall hook bracket — Remote control unit Battery (penlight) Remote control unit holder — Tapping screw (big) (ø4 × 20) Tapping screw (small) (ø3 × 12) — USE For indoor unit installation For through hole connection pipe protection For remote control unit Use as remote control unit holder For indoor unit installation For wall hook bracket installation For remote contorol unit holder installation For indoor unit installation Q’ty 1 1 1 2 1 1 8 2 1 Q’ty 1 1 4 1 12 2 OUTDOOR UNIT ACCESSORIES Cable mark Hexagon wrench Edge cover Tapping screw Binder Putty Stick on both ends of connection cord (to prevent incorrect wiring) For air purge For wiring conduit installation hole edge protection • For cabinet A and cabinet D mounting (1) • Spare (1) For power cord binding For sealing 1 1 1 2 2 1 CUSTOMER GUIDANCE Explain the following to the customer in accordance with the operat- ing manual: (1) Starting and stopping method, operation switching, temperature adjustment, timer, air flow switching, and other remote control unit operations. (2) Air filter removal and cleaning, and how to use the air louvers. (3) Give the operating manual and installation instruction sheet to the customer. A1-A A2-A B-A A1-A A2-A B-A A1-B A2-B B-B A1-B A2-B B-B

INDOOR UNIT PIPING DIRECTION The piping can be connected in the five directions indicated by 1, 2, 3, 4, and 5 in (Fig. 4). When the piping is connected in direction 2 or 5, cut along the piping groove in the side of the front cover with a hacksaw. When connecting the piping in direction 3, cut a notch in the thin wall at the front bottom of the front cover. INSTALLING THE WALL HOOK BRACKET CUTTING THE HOLE IN THE WALL FOR THE CONNECTING PIPING CAUTION 1 Install the wall hook bracket so that it is correctly positioned horizontally and vertically. If the wall hook bracket is tilted, water will drip to the floor. 2 Install the wall hook bracket so that it is strong enough to withstand the weigtht of an adult. Fig. 4 Fig. 5 Fig. 6 Fasten with vinyl tape Lower 3-2/16” (80 mm) dia. hole (Rear) 2 Right outlet 3 Bottom outlet 1 Rear outlet 4 Left rear outlet 5 Left outlet (1) Before fastening the wall hook bracket to the wall with the screws, level it by tapping the hook at the center of bracket to the wall with the handle of a screwdriver. (2) Fasten the wall hook bracket to the wall with 6 or more screws through the holes near the outer edge of the bracket. (3) Check that there is no rattle at the wall hook bracket. Wall hook bracket Tapping screw (big) (Handle of screwdriver) Tap Hook String Wall hook bracket Hook Counter weight Center notch (1) Cut a 3-2/16” (80 mm) diameter hole in the wall at the position shown in (Fig. 6). (2) When cutting the wall hole at the inside of the wall hook bracket, cut the ø80 mm hole within the range of the left and right center marks. When cutting the wall hole at the outside of the wall hook bracket, cut the hole at least 3/8” (10 mm) below the center line. (3) Cut the hole so that the outside end is lower 3/16” to 3/8” (5 to 10 mm) than the inside end. (4) Always align the center of the wall hole. If misaligned, water leakage will occur. (5) Cut the wall pipe to match the wall thickness, stick it into the acces- sory wall cap-B, fasten the cap with vinyl tape, and stick the pipe through the hole. (The connection pipe is supplied in the installation set.) (Fig. 6) (6) For Left piping and right piping, cut the hole a little lower so that drain water will flow freely. (Fig. 6) NOTE: • Always align the center of the wall hole. If misaligned, water leakage will occur. • If the wall hole pipe is not used, the cord interconnecting the indoor and outdoor units may touch metal and cause electric leakage. 3/8” (10 mm) or over Wall cap-B (Wall pipe) (Inside) Wall (Outside) 3/16” to 3/8” (5 to 10 mm) low 3-2/16” (80 mm) dia. hole (Rights side hole only. 2-9/16” (65 mm) diameter hole is also possible.) 3/8” (10 mm) or over Lower Center mark

[Rear piping, Right piping, Bottom piping] • Install the indoor unit piping in the direction of the wall hole and bind the drain hose and pipe together with vinyl tape. (Fig. 7) • Install the piping so that the drain hose is at the bottom. • Wrap the pipes of the indoor unit that are visible from the outside with decorative tape. Fig. 7 Cut off the piping outlet cutting groove with a hacksaw, etc. Decorative tape Right piping Notch the thin part of under cover A. Bottom piping Bind with vinyl tape Indoor unit drain hose (bottom) Rear piping Pipe (top) For left outlet piping, cut off the piping outlet cutting groove with a hacksaw. Drain cap Remove the drain cap by pulling at the projection at the end of the cap with pliers, etc. Indoor unit drain hose [For Left rear piping, Left piping] Interchanging the drain cap and the drain hose. • For left piping and left rear piping, align the marks on the wall hook bracket and shape the connection pipe. • After passing the indoor piping and drain hose through the wall hole, hang the indoor unit on the hooks at the top and bottom of the wall hook bracket. Fig. 8 Connection pipe (1/4” (6.35 mm) dia.) Align the marks. Connection pipe (3/8” (9.52 mm) dia. or 1/2” (12.7 mm) dia.) Indoor unit Top hooks Wall hook bracket Bottom hooks (Fitting) After hooking the indoor unit to the top hook, hook the fittings of the indoor unit to the two bottom hooks while lowering the unit and pushing it against the wall. [Installing the indoor unit] • Hang the indoor unit from the hooks at the top of the wall hook bracket. • Insert the spacer, etc. between the indoor unit and the wall hook bracket and separate the bottom of the indoor unit from the wall. Fig. 9 Spacer Indoor unit Wall hook bracket CAUTION After removing the drain hose, don’t forget to install the drain cap. NOTE: • To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 4” (100 mm) or more. • If the pipe is bent repeatedly at the same place, it will break. • Do not remove the flare nut from the indoor unit pipe until imme- diately before connecting the connection pipe. Fig. 10 Drain cap Indoor unit drain hose Insert the drain cap and drain hose until it butts against the drain port.

1. INDOOR UNIT (1) Install the indoor unit level on a strong wall which is not subject to vibration. (2) The inlet and outlet ports should not be obstructed : the air should be able to blow all over the room. (3) Do not install the unit where it will be exposed to direct sun- light. (4) Install the unit where connection to the outdoor unit is easy. (5) Install the unit where the drain pipe can be easily installed. (6) Take servicing, etc. into consideration and leave the spaces shown in (Fig. 1). Also install the unit where the filter can be removed. Fig. 1 Left side 5 cm or over 6 cm or over Right side 5 cm or over 150 to 200 cm 150 cm or over Fig. 3 UNIT B (Large) UNIT A2 (Small) UNIT A1 (Small) 2. OUTDOOR UNIT (1) If possible, do not install the unit where it will exposed to direct sunlight. (If necessary, install a blind that does not interfere with the air flow.) (2) Install the outdoor unit in a place where it will be free from be- ing dirty or getting wet by rain as much as possible. (3) Install the unit when connection to the indoor unit is easy. (4) Do not place animals and plants in the path of the warm air. (5) Take the air conditioner weight into account and select a place where noise and vibration are small. (6) Select a place so that the warm air and noise from the air condi- tioner do not disturb neighbors. (7) Provide the space shown in Fig. 2 so that the air flow is not blocked. Also for efficient operation, leave open three of the four directions front, rear, and both sides. (8) Install the unit near the special branch circuit. Fig. 2 CAUTION MINIMUM CIRCUIT AMPACITY 25A MAXIMUM OVERCURRENT PROTECTION 30A (TIME DELAY FUSE OR HACR TYPE CIRCUIT BREAKER) 30 cm or over 60 cm or over 60 cm or over 10 cm or over 1 cm or over ELECTRICAL REQUIREMENT Always make the air conditioner power supply a special branch cir- cuit and provide a special switch and receptacle. Do not extend the power cord.

INDOOR UNIT PIPING DIRECTION The piping can be connected in the five directions indicated by 1, 2, 3, 4, and 5 in Fig. 11. When the piping is connected in direction 2 or 5, cut a notch along the piping groove in the side of the under cover with a hacksaw. When connecting the piping in direction 3, cut a notch in the thin wall at the front bottom of the under cover. Fig. 11 1 Rear outlet 2 Right outlet 3 Bottom outlet 4 Left rear outlet 5 Left outlet (Rear) INSTALLING THE WALL HOOK BRACKET Removing the wall hook bracket Remove the wall hook bracket in the following order: 1 Remove one side of under cover B by pulling it forward (arrow direction in Fig. 12). 2 Remove the other side of under cover B by pulling it for- ward (arrow direction in Fig. 12). 3 Remove the tapping screw installed to under cover A. (Fig. 13) 4 While pulling the right side of under cover A forward (re- leasing the inside stopper), slide under cover A to the left and unhook the two inside hooks. (Fig. 13) 5 Next, remove under cover A by pulling the left side forward (arrow direction in Fig. 13). 6 Remove the four tapping screws holding the wall hook bracket. (Fig. 14) Fig. 12 1 2 Under cover B 3 4 Tapping screw Under cover A Hook Stopper 5 Fig. 13 Fig. 14 Tapping screw 6 Wall hook bracket (1) Install the wall hook bracket so that it is correctly positioned hori- zontally and vertically. If the wall hook bracket is tilted, water will drip to the floor. (2) As the weight of the indoor unit is 37 to 44 Ibs (17 to 20 kg), it should be installed after properly examining the place where it is intended to be installed. If the place is not strong enough, a plank or girder should be used to make the place sufficiently strong so that the wall can support the weight. [Installation directly to a wall] Before fastening the wall hook bracket to the wall with the screws, level it by tapping the hook at the center of bracket to the wall with the handle of a screwdriver. • Fasten the wall hook bracket to the wall with 6 or more screws and anchor bolts through the holes near the outer edge of the bracket. • Do not install the wall hook bracket at only one place or at an angle. For a concrete wall, embed anchor bolts 3/8” (10 mm dia.) into the wall at the hook bracket holes 15/32” × 23/32” dia (12 × 18 mm dia.). Allow the anchor bolts to stick out at least 23/32” (18 mm) from the wall. (Fig. 15) Install the unit to the anchor bolts with nuts through the wall hook bracket. Use 2 bolts for concrete wall and 4 bolts for blister concrete wall. • Finally tighten the bolts and wood screws after confirming, using the level indicator, that the clamp is horizontal. CAUTION Install the wall hook bracket horizontally and perpen- dicularly. If the wall hook bracket is tilted, water will drip to the floor. Fig. 15 Fig. 16 Wall hook bracket 12-19/32” (320) 23-17/32” (598) 14-13/32” (366) 18-15/32” (216) 2-1/4” (57) 2-5/32” (55) 2-1/4” (57) 2-5/32” (55) 5-1/4” (133) 8-19/32” (219) 9-5/8” (244) 14-11/16” (373) 23-25/32” (604) 9-15/32” (241) 24-1/2” (622) 24-23/32” (628) 18-23/32” (466) 18-19/32” (472) 1-13/32” (36) 3” (76) 5-5/32” (131) 7-5/16” (186) 9-1/2” (241) 12-13/32” (315) 20-ø15/32”×23/32” (12×18) hole for bolt 84-ø1/4” (6) hole for tapping screw Piping inlet Piping inlet Bolt Wall 23/32” (18 mm) max. 31/32” (24) Anchor bolt Center notch Hook Wall hook bracket String Counter weight Hook Tapped Tapping screw (big) Wall hook bracket (Handle of screwdriver)

FOR THE CONNECTING PIPING FORMING THE DRAIN HOSE AND PIPE WARNING If the wall pipe is not used, the cord interconnecting the indoor and outdoor units may touch metal and cause electric leakage. (1) Cut a 3-15/16” (100 mm) diameter hole in the wall at the position shown in Fig. 17. (2) When cutting the wall hole at the inside of the installation frame, cut the hole to a point of intersection of center marks. When cutting the wall hole at the outside of the installation frame, cut the hole at least 3/8” (10 mm) below this center point. (3) Cut the hole so that the outside end is lower 3/16” to 3/8” (5 to 10 mm) than the inside end. (4) Always align the center of the wall hole. If misaligned, water leakage will occur. (5) Cut the wall pipe to match the wall thickness, stick it into the wall cap, fasten the cap with vinyl tape, and stick the pipe through the hole. (The connection pipe is supplied in the installation set.) (Fig. 17) Fig. 17 (6) For 5 left piping and 2 right piping, cut the hole a little lower so that drain water will flow freely (Fig. 17). Lower Lower Center mark Fasten with vinyl tape (Wall pipe) 3/8” (10 mm) or over (Inside) Wall (Outside) Wall cap 3/16” to 3/8” (5 to 10 mm) less 3/8” (10 mm) or over 3-15/16” (100 mm) dia. hole [1 Rear piping, 2 Right piping, 3 Bottom piping] • Install the indoor unit piping in the direction of the wall hole and bind the drain hose and pipe together with vinyl tape. (Fig. 18) • Install the piping so that the drain hose is at the bottom. CAUTION 1 Do not remove the flare nut from the indoor unit pipe until immediately before connecting the con- nection pipe. 2 To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 4˝ (100 mm) or more. 3 If the pipe is bent repeatedly at the same place, it will break. Fig. 18 Cut off the piping outlet cutting groove with a hacksaw, etc. Decorative tape Right piping Notch the thin part of under cover A. Bottom piping Bind with vinyl tape Indoor unit drain hose (bottom) Rear piping Pipe (top) • Perform “ELECTRICAL WIRING” before performing this piping. • Wrap the pipes of the indoor unit that are visible from the outside with decorative tape. • After passing the indoor piping and drain hose through the wall hole, hang the indoor unit on the hooks at the top of the wall hook bracket. Fig. 19 Indoor unit Top hooks Wall hook bracket [For 4 Left rear piping, 5 Left piping] • Left piping and left rear piping can be easily installed by removing the pipe bracket. Removing the pipe bracket Remove the three tapping screws holding the pipe bracket as shown below. Fig. 20

• For left piping and left rear piping, preset the end of the pipe to the dimensions shown in Fig. 21 from the mark on the wall hook bracket and form the connection pipe. • Bend the connection piping at a bend radius of at least 4“ (100 mm) and position it no more than 2“ (50 mm) from the wall. Fig. 21 Connection pipe 1/2” (12.7 mm dia.) About 17-5/16” (440 mm) About 14-31/32” (380 mm) Connection pipe 1/4” (6.35 mm dia.) Bend (R100) with a pipe bender • When extending the drain hose at the indoor unit, install the accessory drain insulation. Fig. 22 • Place the indoor unit drain hose behind the piping. [Installing the indoor unit] • Piping work can be made easier by laying out, shaping, and tem- porarily fastening the connection pipe, drain hose, and connec- tion cord as shown in Fig. 23 beforehand. Fig. 23 (Left piping) Drain insulation Drain hose Vinyl tape Indoor unit drain hose Indoor unit Connection cord Pipe Connect the piping Drain hose INSTALLING THE INDOOR UNIT After connecting the piping, fasten the bottom of the indoor unit and the wall hook bracket with the tapping screws. Fig.24 Indoor unit Wall hook bracket Pipe bracket Tapping screw WARNING 1 Install the unit where it will not be tilted by more than 5°. 2 When installing the outdoor unit where it may exposed to strong wind, fasten it securely. • Set the unit on a strong stand, such as one made of concrete blocks to minimize shock and vibration. • Do not set the unit directly on the ground because it will cause trouble. OUTDOOR UNIT PROCESSING When the outdoor unit will be exposed to strong wind, fasten it with bolts at the places indicated by the arrows (Fig. 25). Fig. 25 Bottom 25-19/32” (650 mm) 4-ø12 hole (Anchor bolt M10) 15-3/4” (400 mm)

CAUTION The maximum lengths of product are shown in Table 1. If the units are further apart than this, correct op- eration can not be guaranteed. 1. LIMITATION OF REFRIGERANT PIPING LENGTH Table 3 Fig. 26 2. FLARING (1) Cut the connection pipe to the necessary length with a pipe cutter. (2) Hold the pipe downward so that cuttings will not enter the pipe and remove the burrs. (3) Insert the flare nut onto the pipe and flare the pipe with a flaring tool. Fig. 27 3. BENDING PIPES The pipes are shaped by your hands. Be careful not to collapse them. Fig. 28 Do not bend the pipes in an angle more than 90°. When pipes are repeatedly bent or stretched, the material will harden, making it difficult to bend or stretch them any more. Do not bend or stretch the pipes more than three times. Total max length (A1+A2) Total max length (B) Max length for each indoor unit (A1 or A2 or B) Max height difference (H) 98 ft (30 m) 49 ft (15 m) 49 ft (15 m) 26 ft (8 m) INDOOR UNIT OUTDOOR UNIT Check if [L] is flared uniformly and is not cracked or scratched. L dimension Thin pipe (6.35 mm dia.) 1.4 to 1.7 mm Thick pipe (12.7mm dia.) 1.9 to 2.2 mm 4. CONNECTION (1) Install the outdoor unit wall cap (supplied with the optional instal- lation set or procured at the site) to the wall hole pipe. (2) Connect the outdoor unit and indoor unit piping. (3) After matching the center of the flare surface and tightening the nut hand tight, tighten the nut to the specified tightening torque with a torque wrench. (Tighten the flare nut of the outdoor unit 3- way valve after air purging.) Fig. 29 Table 4 Flare Nut Tightening Torque Do not remove the cap from the connection pipe before connecting the pipe. Fig. 30 Flare nut 6.35 mm (1/4”) dia. 12.7 mm (1/2”) dia. Tightening torque 15.7 to 17.6 N • m (160 to 180 kgf • cm) 49.0 to 53.9 N • m (500 to 550 kgf • cm) Tightening torque standard (using a 20 cm wrench) Wirst strength Arm strength Tighten with two wrenches. Torque wrench Wrench (fixed) Flare nut Connection pipe To prevent Gas leakage, coat the flare surface with refrigerator oil. Indoor unit pipe Torque wrench Flare nut Connection pipe OUTDOOR UNIT L

A. For solid core wiring (or F-cable) (1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation to about 15/16” (25 mm) of expose the solid wire. (2) Using a screwdriver, remove the terminal screw(s) on the terminal board. (3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw. (4) Shape the loop wire properly, place it on the terminal board and tighten securely with the terminal screw using a screwdriver. B. For strand wiring (1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation to about 3/8” (10 mm) to expose the strand wiring. (2) Using a screwdriver, remove the terminal screw(s) on the terminal board. (3) Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped wire end. (4) Position the round terminal wire, and replace and tighten the ter- minal screw using a screwdriver. Fig. 32 Solid wire Insulation Strip 15/16” (25 mm) Strip 3/8” (10 mm) Strandwire Screw with special washer Screw with special washer Round terminal Round terminal terminal board Round terminal Wire Wire WARNING 1 Before starting work, check that power is not be- ing supplied to indoor units and the outdoor unit. 2 Match the terminal block numbers and connection cord colors with those of the indoor unit side. Er- roneous wiring may cause burning of the electric parts. 3 Connect the connection cords firmly to the termi- nal block. Imperfect installation may cause a fire. 4 Always fasten the outside covering of the connec- tion cord with cord clamps. (If the insulator is clamped, electric leakage may occur.) 5 Always connect the ground wire. WIRING SYSTEM DIAGRAM INDOOR UNIT OUTDOOR UNIT TERMINAL TERMINAL INDOOR UNIT A1 1 2 3 1 2 3 G G G 14AWG (Inter-unit) Power lines DISCONNECT SWITCH (FIELD SUPPLY) TERMINAL INDOOR UNIT A2 1 2 3 4 5 6 G DISCONNECT SWITCH (FIELD SUPPLY) Grounding line G G TERMINAL INDOOR UNIT B 1 2 3 7 0 8 9 A G DISCONNECT SWITCH (FIELD SUPPLY) Grounding line N Grounding line 230/208 V 230/208 V 230/208 V 230/208 V 230/208 V 230/208 V 230/208 V 230/208 V 230/208 V Power supply line Single-phase, 230/208 V,10AWG FUSE Loop Fig. 33

(1) Remove the outdoor unit cabinet A and cabinet D. Fig. 34 * After removing the screws, remove cabinet A by pushing it down Cabinet A mounting direction Cabinet D Cabinet A mounting direction * Use the accessory screws at these points only (2) Open the connection knockout holes of the desired direction with nippers, etc. After opening the knockout holes, install the acces- sory edge cover to protect the opened places. Fig. 35 Cabinet D Knockout hole Edge cover Pipe mounting hole Power supply line Inter-Unit line (3) Connect the piping and power supply cord from the mounting holes. (4) Temporarily mount the conduit tubes on the conduit plate. (5) Properly connect both the power supply and inter-unit wire har- ness to the corresponding terminals on the terminal board. Refer to the wiring system diagram in Fig. 33. (6) Ground the unit in accordance with local codes. (7) Be sure to size each wire allowing several inches longer than the required length for wiring. (8) Use lock nuts to secure the conduit tubes. Fig. 36 � � � � Lock Nut Conduit plate Inter-Unit line Power supply line

UNIT A1 and A2 (1) Remove the intake grill (Fig. 50). (2) Remove the front panel (Fig. 51 and 52). (3) Remove the screw 1 , and remove Cover-C. (4) Remove the screw 2 , and remove Cover-D. (5) Remove the screw 3 , and remove the Conduit holder. (6) Fasten the Inter-unit wire harness to the Conduit holder using the Lock nut. (7) Install the Conduit holder to its original state with the screw 3. Fig. 37 (8) Install Cover-D to its original state with the screw 2. (9) Install Cover-C to its original state with the screw 1. Fig. 38 Cover-C Cover-D Screw Screw Inter-unit wire harness Cover-C Cover-D Screw Screw Inter-unit wire harness Conduit holder Lock nut UNIT B (1) Remove the intake grill (Fig. 54). (2) Remove the front panel (Fig. 55 and 56). (3) Remove the control box cover (Fig. 39). Removing the control box cover Fig. 39 (4) Process the end of the connection cords to the dimension shown in Fig. 40 and bend the end of each wire as shown. (5) Connect the end of the connection cord fully into the terminal board and fasten with the screw. Fig. 40 1 2 3 4 5 6 Earth screw Lock nut Plug Terminal board 25 mm 20 mm Connection cord (Inter-Unit line) REMOTE CONTROL UNIT CODE SWITCHING Fig. 41 JM1 JM2 JM3 A B C D A B C D Indoor unit Printed circuit board AUTORESTART REMOCON 2 REMOCON 1 Remote control unit signal selector switch Remote control unit ACL Match the remote control unit signal selector switch selection and printed circuit board setting according to Table 5. If these are not matched, the remote control unit cannot be operated for the air conditioner. Table 5 Jumper wire JM 2 JM 3 Connect Connect Connect Disconnect Disconnect Connect Disconnect Disconnect After setting the remote control unit signal selector switch, press the ACL button. Remote control unit signal selector switch A (Primary setting) B C D (UNIT B model only)

tioner, do not mix gas other than the specified refrigerant (R22) inside the refrigerant cycle. 2 Charging of additional refrigerant (R22) accord- ing to the piping length is unnecessary. 3 After connecting the piping, check the joints for gas leakage with gas leak detector. (1) Remove the cap, and connect the gauge manifold and the vacuum pump to the charging port by the service hoses. (2) Vacuum the indoor unit and the connecting pipes until the pres- sure in them lowers to below 1.5 mmHg. (3) Disconnect the service hoses and fit the cap the charging port (Tightening torque : 8.8 to 11.8 N • m (90 to 120 kgf • cm)). (4) Remove the blank caps, and fully open the spindles of the 2-way and 3-way valves with a hexagon wrench (torque: 4.9 to 6.9 N • m (50 to 70 kgf • cm)). (5) Tighten the blank caps of the 2-way valve and 3-way valve to the specified torque: 2-way valves torque: 19.6 to 24.5 N • m (200 to 250 kgf • cm) 3-way valves torque: 31.4 to 37.2 N • m (320 to 380 kgf • cm) Fig. 31 Connecting pipe 3-way valve Blank cap Charging port Service hose with valve core OUTDOOR UNIT Cap OUTDOOR UNIT 3-way valve 2-way valve Service hose Gauge manifold Vacuum pump Connection pipe WARNING 1 The rated voltage of this product is 230-208 V A.C. 60 Hz. 2 Before turning on the verify that the voltage is within the 187 V to 253 V range. 3 Always use a special branch circuit and install a special receptacle to supply power to the room air conditioner. 4 Use a circuit breaker and receptacle matched to the capacity of the room air conditioner. When connecting the power supply to the out- door unit, always install a circuit breaker between the outdoor unit and the power supply. Use the circuit breaker has an isolation distance of at least 3 mm between the contacts of each pole. 5 Perform wiring work in accordance with stand- ards so that the room air conditioner can be op- erated safely and positively. 6 Install a leakage circuit breaker in accordance with the related laws and regulations and electric com- pany standards. CAUTION 1 The power source capacity must be the sum of the room air conditioner current and the current of other electrical appliances. When the current contracted capacity is insufficient, change the contracted capacity. 2 When the voltage is low and the air conditioner is difficult to start, contact the power company the voltage raised.

• For rear, right, and bottom piping, butt the connection piping insu- lation material against the indoor unit piping and fasten it with seal A (UNIT B only) and vinyl tape so there is no gap. • For left and left bottom piping wrap the piping with cloth tape within the range that encompasses the piping housing section at the rear of the indoor unit. (2) Push the bottom of the indoor unit against the wall and hook the two pawls at the bottom of the indoor unit to the mounting plate hooks. At this time, check the following: • Are the top and bottom hooks seated positively? Check by moving the indoor unit forward, backward, left and right. • Is the indoor unit installed level and perpendicular? • For left rear piping, is the drain hose at the bottom of the wall hole pipe? (3) Temporarily fasten the connection cable along the connection pip- ing with vinyl tape and wrap decorative tape around the part that is visible from the body. For right, bottom, and left piping, securely wrap the part coming from the body with decorative tape so that the piping does not swell. (Overlap wrapping of outdoor parts about 1/3 of the width of the tape from the bottom of the piping so that water will not enter.) (4) Fasten the connection pipe to the outside wall with a saddle, etc. (5) Fill the gap between the outside wall pipe hole and the pipe with sealer so that rain water and wind cannot blow in. (6) Fasten the drain hose to the outside wall, etc. UNIT B Installing the under covers (1) Installing under cover A (Fig. 42) 1 Hook the two pipe bracket hooks to the two holes in the back of under cover A. 2 While pulling the left side of under cover A forward about 1 cm (at this time, hold hook 1 so that it does not come unhooked), slide under cover A to the right and hook the hook. 3 Push the left side of under cover A in the arrow direction and attach the two side hooks to the base. 4 Install under cover A to the pipe bracket with the tapping screw. Fig. 42 (2) Installing under cover B (Fig. 43) 5 Push the left side of under cover B in the arrow direction and attach the two hooks to under cover A. 6 Push the right side of under cover B in the arrow direction and attach the two side hooks to the base. Fig. 43 Pipe bracket Base Side hook Under cover A Hook Hole Stopper Tapping screw 3 1 2 4 Under cover A Under cover B Side hook Base Fig. 44 Indoor unit pipe (heat insulation) Connection pipe (heat insulation) Vinyl tape Fig. 45 Fig. 47 Fig. 46 Fig. 48 Fig. 49 Butt connection pipe (heat insulation) against the indoor unit pipe (heat insulation) and wrap with seal A so that there is no gap. Seal A Wrap with cloth tape Drain hose Cloth tape Pipe Left piping Connection cord Pipe Drain hose For connection from the left rear Connection pipe Wall pipe Connection cord Drain hose (View from indoors) GOOD Drain hose BAD BAD BAD Saddle Lifted up Wave End in water (Outside wall cap) (Sealer putty) (Outdoors) Wall (Saddle) Pipe 6 5 Check the following:

(1) Open the intake grille. (2) Open the intake grille and lift the intake grille upward until the hook at the top of the intake grille is unhooked. Fig. 54 2. FRONT PANEL REMOVAL (1) Remove the four tapping screws. (2) Remove the front panel by lifting the bottom of the front panel upward. Fig. 55 3. FRONT PANEL INSTALLATION (1) Hook the top hole of the front panel to the hook of the base. (2) Fasten the front panel with the screw. Fig. 56 FRONT PANEL REMOVAL CAUTION Install the front panel and intake grille securely. If in- stallation is imperfect, the front panel or intake grille may fall off and cause injury. UNIT A1 and A2 1. INTAKE GRILLE REMOVAL (1) Place your fingers at both lower ends of the grille panel, and lift forward; if the grille seems to catch partway through its movement, continue lifting upward to remove. (2) Pull past the intermediate catch and open the intake grille wide so that it becomes horizontal. Fig. 50 2. UNLOCK THE INTAKE GRILLE Hold the intake grille with one hand and pull the knobs on the right and the left all the way to unlock the intake grille. Fig. 51 (1) Remove the two screws. (2) Unhook the tab at the center of the front panel. (3) Remove the front panel by lifting it in the arrow direction. Fig. 52 3. FRONT PANEL INSTALLATION (1) Engage the body tabs by pressing on the top of the unit at the three points indicated by the arrows until the tabs make a sound. (2) Engage the tab at the center of the front panel and fasten the front panel with the two screws. Fig. 53 Tapping screw (Hook) Open Lift Intake grille Lift Lift (Hook) Open Front panel (Top hook) Front panel (Top hole) Intake grille Be sure that the top hole of the front panel is attached securely to the hook of the base. Mounting shaft Raise the horizontal intake grille to remove it. Tab Tab Knob

INSTALLATION • Perform test operation and check items 1 and 2 below. • For the operation method, refer to the operating manual. • The outdoor unit may not run, depending on the room tempera- ture. In this case, press the TEST RUN button of the remote control unit while the room air conditioner is running. Fig. 57 UNIT A1, A2 UNIT B Remote control unit (rear) TIME ADJUST button TEST RUN button Operation can be checked by the lighting and flashing of the display section OPERATION and TIMER lamps. Perform judgment in accordance with the following. • Test run When the air conditioner is run by pressing the remote control unit test run button, the OPERATION and TIMER lights flash slowly at the same time. • Error The OPERATION and TIMER lights operate as follows (Table 6) according to the error contents. Table 6 CHECK ITEMS (1) INDOOR UNIT (1) Is operation of each button on the remote control unit normal? (2) Does each light function normally? (3) Do air flow direction louvers operate normally? (4) Is the drain normal? (5) Is there any abnormal noise and vibration during operation? (2) OUTDOOR UNIT (1) Is there any abnormal noise and vibration during operation? (2) Will noise, wind, or drain water from the unit disturb the neighbors? (3) Is there any gas leakage? • Do not operate the air conditioner in the test run mode for a long time. • For the operation method, refer to the operating manual and per- form operation check. Error display Error contents OPERATION light TIMER light Room temperature thermistor abnormal temperature detected OPERATION light TIMER light Piping thermistor abnormal temperature detected 0.5 sec 0.1 sec 5 sec ON 0.5 sec OFF ON OFF 0.1 sec Two quick flashes repeated 0.1 sec ON/OFF repeated Three quick flashes repeated 0.1 sec ON/OFF repeated 0.5 sec 0.1 sec 5 sec ON 0.5 sec OFF ON OFF 0.1 sec CAUTION 1 Check that the indoor unit correctly receives the signal from the remote control unit, then install the remote control unit holder. 2 Select the remote control unit holder selection site by paying careful attention to the following: Avoid places in direct sunlight. Select a place that will not be affected by the heat from a stove, etc. Install the remote control unit holder to a wall or pillar with the tap- ping screws. Fig. 58 UNIT A1, A2 Remote control unit holder fixing Remote control unit holder Tapping screw (small) Remote control unit mounting Remote control unit 1 Push 1 Set Fig. 59 For use as Hand Control Screws Insert Slide up 1 Mount the Holder. 2 Set the Remote Control Unit. 3 To remove the Remote Control Unit For use as Wall Attachment Screws Insert Screw Slide 1 Mount the Holder. 2 Set the Remote Control Unit. 3 Attach the unit to the holder as shown. PART. NO 9369651014