Trane WCY036G1 manual

IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work. ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES HAZARDOUS VOLTAGE - DISCONNECT POWER BEFORE SERVICING WARNING: Single P ac kag e Heat Pump 13-14 SEER Con ver tible 2 - [...]

Page 2 TYPICAL ROOFTOP INSTALLATION WITH FULL PERIMETER CURBS (WCY024-060G Models) GENERAL INFORMA TION IMPORTANT: Read this entire manual before beginning instal- lation procedures. SAFETY NOTICE. THIS INFORMATION IS INTENDED FOR USE BY INDIVIDUALS POSSESSING ADEQUATE BACK- GROUNDS OF ELECTRICAL AND MECHANICAL EXPERI- ENCE. ANY ATTEMPT TO REPAIR A[...]

Page 3 ROOF INSULA TION ROOF DECK FIELD SUPPLIED RIGID INSULA TION SUPPL Y AIR DUCT RETURN AIR DUCT ROOF MOUNTING CURB FIELD SUPPLIED CANT STRIP FIELD SUPPLIE D SUPPORTS A T EACH END OF CURB ROOFING SEE NOTE 1 SEE NOTE 2 CONVERTING HORIZONTAL TO DOWNFLOW TYPICAL ROOFTOP INSTALLATION WITH BAYCURB030A (WCY024-060G Models) NOTE SUPPLY OPENING 1. REMOV[...]

Page 4 DIMENSIONAL D A T A 4 MOD EL CORNER WEIGHT(LBS) UNIT WEI G HT AB C D E F G H J KL M N P W1 W2 W3 W4 WCY 024G 79 74 74 104 331 56-1/2 36 29-3/16 18-9/16 11-1/1 6 6-9/16 6-13/16 17 21 25-3/8 17 -1/2 10 3 4-7/16 WCY 030G 82 64 86 110 342 21 24-3 /8 WCY 036G 110 82 88 118 398 64 36 29 -1/16 18-9/16 11 -1/ 16 6-9/16 11-1/8 17 19-1/4 27-1/2 17 -1/[...]

Page 5 DIMENSIONAL D A T A 5 From Dwg. 21D664 MODEL A B C D WCY024G WCY030G 56-1 /2 36 2 9-3/16 12-15 /1 6 WCO36G WCY042G 64 36 29-3/1 6 14- 1/2 WCY048G WCY060G 65-1/8 45 33-3/8 14 -13/1 6 RECOMM ENDED SER VI CE CLEARANC E BA CK * 6.0" LEFT SIDE 30.0" RIGHT SIDE 24.0" FR ONT SI DE 30.0" * 18" WITH F RESH AIR A CCESSO R Y * [...]

Page 6 REQUIRED CLEARANCE FOR UNIT INSTALLATION AND ROOF PENETRATION HOLE SIZE REQUIRED LOCA TIONS AND RECOMMEND A TIONS These units are designed for outdoor installation. For proper instal- lation, the following recommendations must be considered. NOTE: Unit shipped for horizontal installation. Convert to downflow per instruction. The discharge ai[...]

Page 7 INST ALLA TION IMPORTANT!: DO NOT LIFT THE UNIT WITHOUT TEST- LIFTING FOR BALANCE AND RIGGING.DO NOT LIFT THE UNIT IN WINDY CONDITIONS OR ABOVE PERSONNEL. DO NOT LIFT THE UNIT BY ATTACHING A CLEVIS, HOOKS, PINS OR BOLTS TO THE UNIT CASING, CASING HARD- WARE, ANGLES, TABS OR FLANGES. FAILURE TO OB- SERVE THESE WARNINGS MAY RESULT IN EQUIPMENT[...]

Page 8 8 7 NOTE: The inner perimeter of the Drip Lip on all units should be flush with the outer perimeter of the curb on the two sides shown here. See Figure 2 for the location of the unit overhang on the WCY036-060G Models with BAYCURB030A. SPREADER BARS OUTDOOR COIL END OF UNIT GASKET SEAL BASE OF UNIT REST ON TOP OF CURB RAILS DRIP LIP DIMPLE B[...]

Page 9 TYPICAL ROOFTOP APPLICATION WITH FRAME (WCY024-060G MODELS) INST ALLA TION ROOFTOP -- UNITS For roof top applications using a field fabricated frame and ducts, use the following procedure: 1. The frame must be located and secured by bolting or welding to the roof. Flashing is required. 2. The hole in the roof must be prepared in advance of i[...]

Page 10 TYPICAL GROUND LEVEL APPLICATION (WCY024-060G MODELS) INST ALLA TION GROUND LEVEL -- HORIZONTAL UNITS For ground level installations, the unit should be positioned on a pad the size of the unit or larger. The unit must be level on the pad. The pad must not come in contact with the structure (See Figure 11.) Be sure the outdoor portion of th[...]

Page 11 DUCT ATTACHMENT METHODS 3 / 4 " PVC OR COPPER TUBING AND FITTINGS 1-1/2" MIN. TYPICAL CONDENSATE DRAIN PIPING A 3/4-inch female NPT condensate drain connection is pro- vided on the evaporator access panel end of the unit. See Figure 4. Provide a trap and fill it with water before starting the unit to avoid air from being drawn thr[...]

Page 12 ELECTRICAL CONNECTIONS Electrical wiring and grounding must be installed in accordance with local codes or, in the absence of local codes, with the National Electrical Code ANSI/NFPA 70, Latest Revision. ELECTRICAL POWER It is important that proper electrical power be available for the unit. Voltage variation should remain within the limits[...]

Page 13 WCY-G FIELD WIRING DIAGRAM Thermostat System Switch until power has been applied long enough to evaporate any liquid R-22 in the compressor. It is recommended that the sump heater be energized for eight (8) hours prior to starting. After all electrical wiring is complete, set the thermostat system switch in the OFF position so that the comp[...]

Page 14 ST AR T - UP To start the unit in the cooling mode, set the thermostat system switch to COOL and move the thermostat COOL indicator to a setting below room temperature. The condenser (outdoor) fan motor compressor and evaporator (indoor) fan motor will operate automatically. OPERATING PRESSURES After the unit has operated in the cooling mod[...]

Page 15 SEQUENCE OF OPERA TION GENERAL Operation of the unit heating and cooling cycles is automatic for HEAT and COOL functions. (The optional automatic changeover thermostat, when in the AUTO position, automatically changes to heat or cool with sufficient room temperature change.) The fan switch can be placed in either the ON position, causing co[...]

Page 16 FLASH RA TE INDICA TIONS: 1 — Flash/Second = Normal operation. 2 — Flashes/Second = F ault A (Low ∆ T) i.e.: Inoperativ e compressor , loss of charge, open ambient sensor , shor ted coil sensor . 3 — Flashes/Second = F ault B (20 defrosts ter minated on time) F ault C (High ∆ T) i.e.: SO V stuck in heating, shor ted ambient sensor[...]

Page 17 DEMAND DEFR OST CONTROL CHECK OUT SYMPTOMS CHECKS YES/NO A CTIONS 1. LED off . 1. 24V R-B & Y -B at board, with unit running? N Repair low v oltage wiring. Y Complete Check #2. 2.Shor t FRC_DFT pin to TEST_COMMON pin. Is defrost cycle initiated? N Replace defrost control. Y LED is bad but control will still funct ion. 2. LED flashing ve[...]

Page 18 ROUTINE MAINTENANCE BY OWNER You can do some of the periodic maintenance functions for your WCY-G unit yourself; this includes replacing the dispos- able or cleaning the permanent air filters, cleaning the unit cabinet, clearing the condenser coil, and conducting a general unit inspection on a regular basis. Be sure to inspect them at least[...]

Page 19 LIMITED WARRANTY HIGH EFFICIENCY HEAT PUMP WCZ, WCY AND WCX Models Less Than 20 Tons for Residential Use* (Parts Only) This limited w ar ranty is extended by American Standard Inc., to the original purc haser and to any succeeding owner of the real proper ty to whic h the Heat P ump is originally af fixed, and applies to products purc hased[...]

Page 20 Technical Literature - Printed in U.S.A. LIMITED WARRANTY HIGH EFFICIENCY HEAT PUMP WCZ, WCY, WCX, WCC, WCD, WCH, WCM AND WSC Models Less Than 20 Tons for Commercial Use* (Parts Only) This warr anty is extended by American Standard Inc., to the original purchaser and to any succeeding owner of the real proper ty to which the Heat Pump is or[...]