Trane 4WCZ5024E1000A Installation And Operation Manual Download Page 30 | Manualshive

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18-BB42D1-1A-EN

Refrigerant Circuit

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Summary of Contents for 4WCZ5024E1000A

Page 1: ...ult 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 May 2022 1 18 8 B BB B4 42 2D D1 1 1 1A A E EN N Single Packaged Heat Pump 15 SEER2 Two Stage Convertible 2 5 Ton R 410A 4WCZ5024E1000A 4WCZ5036E1000A 4WCZ5048E1000A 4WCZ5060E1000A N No ot te e Graphics in this document are fo...

Page 2: ... tr ri ic ca al l c cu ur rr re en nt t a ar re e g gr ro ou un nd de ed d I If f g gr ro ou un nd di in ng g w wi ir re es s s sc cr re ew ws s s st tr ra ap ps s c cl li ip ps s n nu ut ts s o or r w wa as sh he er rs s u us se ed d t to o c co om mp pl le et te e a a p pa at th h t to o g gr ro ou un nd d a ar re e r re em mo ov ve ed d f fo or r s se er rv vi ic ce e t th he ey y m mu us st t ...

Page 3: ... 12 Ductwork Installation 15 Attaching Downflow Ductwork to Roof Curb 15 Attaching Downflow Ductwork to Roof Frame 15 Attaching Horizontal Ductwork to Unit 15 Condensate Drain Piping 15 Air Filter Installation 15 Electrical Wiring 16 Unit Startup 18 Pre Start Quick Checklist 18 Starting the Unit in Cooling Mode 18 Starting the Unit in Heating Mode 18 Sequence of Operation 19 Final Installation Che...

Page 4: ...it I Im mp po or rt ta an nt t To prevent damage to the sides and top of the unit when hoisting use spreader bars see Rooftop Installation No Curb Frame p 12 2 Check the unit s nameplate to determine if the unit is correct for the intended application The power supply must be adequate for both the unit and all accessories 3 Check to be sure the refrigerant charge has been retained during shipment ...

Page 5: ...Refrigeration Control EXPANSION VALVE Drain Conn Size in 3 4 FEMALE NPT OUTDOOR FAN TYPE PROPELLER DIA IN 23 4 23 4 28 2 28 2 DRIVE NO SPEEDS DIRECT 1 CFM 0 0 in w g e 2550 3020 4220 4700 Motor HP R P M 1 12 810 1 6 830 1 6 830 1 4 830 Volts Ph Hz 208 230 1 60 F L Amps L R Amps LOCATED ON UNIT NAMEPLATE INDOOR FAN TYPE CENTRIFUGAL Dia x Width in 10x10 10x10 10x10 11x10 Drive No Speeds DIRECT VARIA...

Page 6: ...5 179 185 60 194 200 65 210 217 R 410A Subcooling Charging Table Liquid Temperature Liquid Pressure 8 ºF 10 ºF ºF PSIG 70 228 235 75 246 254 80 266 274 85 286 295 90 308 317 95 330 340 100 354 364 105 379 390 110 406 417 115 434 445 120 463 475 125 493 506 C Ch ha ar rg gi in ng g B Be el lo ow w 5 55 5 F F O OD D A Am mb bi ie en nt t i in n H He ea at ti in ng g O On nl ly y 1 The Subcool Chargi...

Page 7: ...ACK SIDE LEFT SIDE RIGHT SIDE FRONT SIDE TOP A BB CC DD Depth EE Width FF 497 8 19 5 8 576 22 11 16 CENTER OF GRAVITY TABLE NEXT PAGE CENTER OF GRAVITY TABLE NEXT PAGE 1093 72 43 1 16 1173 99 46 1 4 1284 99 50 5 8 1535 94 60 1 2 305 12 305 12 914 36 914 36 DIMENSIONS mm Inches HEIGHT OF UNIT TABLE NEXT PAGE 25 1 25 1 152 6 152 6 152 6 152 6 2 3 TON Units 3 5 5 TON Units RECOMMENDED SERVICE CLEARAN...

Page 8: ... 48 35 1 90 398 22 15 67 176 07 6 93 949 33 37 37 1050 93 41 37 304 80 12 0 92 33 3 63 66 51 2 62 406 40 16 0 W1 W2 W3 W4 BB CC 4WCZ5024 60 8 134 38 1 84 27 2 60 42 6 94 200 5 442 168 7 372 401 3 15 8 508 20 4WCZ5036 60 8 134 38 1 84 27 2 60 42 6 94 200 5 442 168 7 372 401 3 15 8 508 20 4WCZ5048 68 9 152 40 8 90 30 8 68 52 2 115 275 6 607 217 5 479 414 0 16 3 635 25 4WCZ5060 80 3 177 47 6 105 35 8...

Page 9: ...ruction on converting the supply and return airflow covers to down airflow 3 The field assembled Roof Mounting Curb BAYCURB050A or BAYCURB051A or a field fabricated curb should be in place before the unit is hoisted to the roof top The Roof Mounting Curb frame must be installed on a flat level section of the roof maximum of 1 4 per foot pitch and provide a level mounting surface for the unit Also ...

Page 10: ... least two 2 inches of insulation and weatherproof There must be a weatherproof seal where the duct enters the structure 5 Do not expose the unit to direct roof water runoff 6 Seal all holes through exterior walls in accordance with local codes 7 Continue with the following installation sections to complete the installation Ductwork Filter and Electrical Wiring Rooftop Installation Curb Mounting C...

Page 11: ... rigging and hoisting requires accessory kit BAYLIFT002BA It includes a kit of four 4 lifting lugs 2 Insert the four lifting lugs in the openings provided in the drip lip on each end of the unit A tap or jerk to the lug will overcome the interference that arises due to the dimple on the lug 3 When hoisting the unit be sure that a proper method of rigging is used Use slings and spreader bars for pr...

Page 12: ...tors must be of a flame retardant material All duct work outside of the structure must be insulated and weatherproofed in accordance with local codes 11 Access and service clearances for the unit must be given careful consideration when locating the duct entrance openings Determine Unit Clearances p 7 provide unit dimensions 12 Continue with the following installation sections to complete the inst...

Page 13: ...ails Drip lip on perimeter of unit Spreader Bars Gasket Seal Drip Lip Dimple BAYLIFT002A Lifting Lugs Table 3 Curb Dimensions This drawing was prepared by the manufacturer in order to provide detail regarding job layout only This drawing is not intended to be used as a basis to construct build or modify the item depicted in the drawing The manufacturer is not responsible for the unauthorized use o...

Page 14: ...Center Support Center Support required on all frame applications Angle Iron Frame Table 5 Typical Rooftop Down Airflow Application with Frame Return Air Roof Flashing Channel Iron Center Support center support required on all frame applications Angle Iron Frame Roof Flashing Supply Air U Un ni it t I In ns st ta al ll la at ti io on n ...

Page 15: ...ductwork must be weatherproofed between the unit and the building When attaching ductwork to a horizontal unit provide a flexible watertight connection to prevent noise transmission from the unit to the ducts The flexible connection m mu us st t be indoors and made out of heavy canvas N No ot te e Do not draw the canvas taut between the solid ducts Figure 6 Attaching Horizontal Airflow Ductwork FI...

Page 16: ...weatherproof disconnect within close proximity and w wi it th hi in n s si ig gh ht t o of f t th he e u un ni it t If disconnect must be mounted to the cabinet the location shown in Table 9 p 16 should be the only one considered O Ov ve er r C Cu ur rr re en nt t P Pr ro ot te ec ct ti io on n The branch circuit feeding the unit must be protected as shown on the unit s rating plate P Po ow we er ...

Page 17: ...ol wiring should not be run in conduit with power wiring unless Class 1 wire of proper voltage rating is used Route the thermostat cable or equivalent single leads of No 18 AWG colored wire from the thermostat subbase terminals through the rubber grommet on the unit See Determine Unit Clearances p 7 for the control entry 24V Entry location Make connections as shown on the wiring diagrams Do not sh...

Page 18: ... AU UT TO O mode O Op pe er ra at ti in ng g P Pr re es ss su ur re e C Ch he ec ck ks s After the unit has operated in the cooling mode for a short period of time install pressure gauges on the gauge ports of the discharge and suction line valves behind the Compressor access panel Check the suction and discharge pressures and compare them to the normal operating pressures provided in the unit s S...

Page 19: ... NG G M MO OD DE E T Th he er rm mo os st ta at t c ca al ll l f fo or r h he ea at t 2 2 s st ta ag ge e t th he er rm mo os st ta at t C Ca al ll l f fo or r 1 1s st t s st ta ag ge e h he ea at ti in ng g o on nl ly y With the room thermostat set to H HE EA AT T and the fan set to A AU UT TO O no power is supplied from the room thermostat O terminal to the unit switchover valve coil SOV and the...

Page 20: ...oil temperature is the difference or delta T measurement This delta T measurement is representative of the operating state and relative capacity of the heat pump system Measuring the change in delta T determines the need for defrost The coil sensor also senses outdoor coil temperature for termination of the defrost cycle E EC CM M F Fa an n M Mo ot to or r A Ad dj ju us st tm me en nt ts s If the ...

Page 21: ...installing them in the unit or duct system N No ot te e It may be necessary to replace permanent filters annually if washing fails to clean the filter or if the filter shows signs of deterioration Be sure to use the same type and size as was originally installed C Co on nd de en ns se er r C Co oi il l Be sure to keep all vegetation and debris away from the condenser coil area Service Maintenance ...

Page 22: ...ue 1 Flash Second Normal operation 2 Flashes Second Fault A Low ΔT Inoperative compressor loss of charge open ambient sensor shorted coil sensor 3 Flashes Second Fault B 20 defrosts terminated on time Fault C High ΔT SOV stuck in heating shorted ambient sensor open coil sensor closed TXV OD motor failure OD fan on in defrost undercharged unit 4 Flashes Second Fault A C or A B For additional inform...

Page 23: ...lean N Complete Check 2 2 Coil sensor open or reading a very high resistance Y Replace coil sensor 3 Ambient sensor reading less than normal N Complete Check 3 Y Replace ambient sensor 4 OD fan off in defrost N Replace defrost control 8 Defrost initiates on approximately 30 45 minute intervals 1 TEST_COMMON pin shorted to TST pin Y Remove short 2 Do both sensors check OK N Replace defective sensor...

Page 24: ...40 60 80 100 120 115 125 135 145 155 165 175 185 40 60 80 100 120 40 50 60 70 80 90 100 110 120 130 140 150 160 5 5 15 25 35 45 55 65 200 250 300 350 400 450 500 5 5 15 25 35 45 55 65 40 50 60 70 80 90 100 110 120 130 140 150 160 5 5 15 25 35 45 55 65 200 250 300 350 400 450 500 5 5 15 25 35 45 55 65 Heating with Thermal Expansion Valve INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM 80 70 AND 60 DE...

Page 25: ... 135 145 155 165 175 185 40 60 80 100 120 115 125 135 145 155 165 175 185 40 60 80 100 120 40 50 60 70 80 90 100 110 120 130 140 150 160 5 5 15 25 35 45 55 65 200 250 300 350 400 450 500 5 5 15 25 35 45 55 65 40 50 60 70 80 90 100 110 120 130 140 150 160 5 5 15 25 35 45 55 65 200 250 300 350 400 450 500 5 5 15 25 35 45 55 65 Heating with Thermal Expansion Valve INDOOR ENTERING DRY BULB CURVES TOP ...

Page 26: ... 135 145 155 165 175 185 40 60 80 100 120 115 125 135 145 155 165 175 185 40 60 80 100 120 40 50 60 70 80 90 100 110 120 130 140 150 160 5 5 15 25 35 45 55 65 200 250 300 350 400 450 500 5 5 15 25 35 45 55 65 40 50 60 70 80 90 100 110 120 130 140 150 160 5 5 15 25 35 45 55 65 200 250 300 350 400 450 500 5 5 15 25 35 45 55 65 Heating with Thermal Expansion Valve INDOOR ENTERING DRY BULB CURVES TOP ...

Page 27: ...18 BB42D1 1A EN 27 Figure 12 4WCZ5060E Cooling Heating DWG NO 4WCZ5060E U Un ni it t S St ta ar rt tu up p ...

Page 28: ...tting Low 975 976 964 965 959 964 957 963 953 956 949 946 945 941 945 949 High 1394 1397 1377 1376 1371 1377 1367 1376 1362 1366 1355 1354 1350 1344 1350 1356 4WCZ5048 1 EXTERNAL STATIC PRESSURE IN WG Horizontal Airflow Cooling Down Airflow Motor Speed 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 350 CFM Ton Setting Low 954 948 973 977 977 977 973 970 966 969 957 975 950 979 944 962 High 1363 1354 ...

Page 29: ...L AIRFLOW 4WCZ5024 4WCZ5036 4WCZ5048 4WCZ5060 7 OFF 8 OFF LOW 700 CFM 1050 CFM 1400 CFM 1750 CFM 7 ON 8 OFF HIGH 800 CFM 1200 CFM 1600 CFM 2000 CFM 7 OFF 8 ON HIGH 800 CFM 1200 CFM 1600 CFM 2000 CFM 7 ON 8 ON HIGH 800 CFM 1200 CFM 1600 CFM 2000 CFM U Un ni it t S St ta ar rt tu up p ...

Page 30: ...30 18 BB42D1 1A EN Refrigerant Circuit U Un ni it t S St ta ar rt tu up p ...

Page 31: ... TXV Stuck Open Low Superheat High Superheat Restricted I D Airflow Ref Circuit Restrictions REFRIGERANT CIRCUIT Liquid Pressure too High P S P S S Liquid Pressure too Low S P S S S Suction Pressure too High S P P S S Suction Pressure too Low S S P S Liquid Refrigerant Floodback TXV System S S P I D Coil Frosting P S P S Compressor Runs Inadequate or No Cooling S P P S S S S P S ELECTRICAL Compres...

Page 32: ...ctices 18 BB42D1 1A EN 13 May 2022 Supersedes New 2022 Important Product Information Packaged Unit Serial Number_____________________________________________________ Packaged Unit Model Number_____________________________________________________ Date of Installation_______________________________________________________________ Dealer________________________________________________________________...

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