Carrier 48DT Series Installation Instructions Manual Download | Manualshive

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Summary of Contents for 48DT Series

Page 1: ...gerant Charge 25 Refrigerant Charge 25 No Charge 25 Low Charge Cooling 25 To Use Cooling Charging Charts 26 Non Communicating Emergency Cooling Heating Mode 26 MAINTENANCE 27 30 Air Filter 28 Indoor F...

Page 2: ...umber are dedicated Low NOx units designed for California installations These models meet the California maximum oxides of nitrogen NOx emissions requirements of 40 nanograms joule or less as shipped...

Page 3: ...7 3 8 441 17 3 8 441 D IN MM 28 3 4 730 28 3 4 730 40 1 4 1022 40 1 4 1022 E IN MM 30 3 8 771 30 3 8 771 41 15 16 1065 41 15 16 1065 F IN MM 44 5 16 1126 44 5 16 1126 44 7 16 1129 44 7 16 1129 A05308...

Page 4: ..._0 B_C REC IREBCLEAFd_NC_S t 1i i It IETEt5 i_1 gr_i _r_9 U_ 3 O I_ EB S IR A S P 3_ R E_Iii_ SI_ _140 t36 _0 LIt_i _r_0 BLOCI OR O_CRE E _i _LS _1 81 l_ 61_OUt_E_ 8UlUlatES POWERENiRY SlOE i0 5_ 8 42...

Page 5: ...5 5 9_ 519 6 6 060 3 I 3 81 3 562 118585 0800 I a 8 89 0 1 2 lS 8 0 5 ia 5 0 940 lIB 64 g 08 30 11954 _a 2 18 84 8 3 000 a O 8 _ 5 a 00 5 1275 _ o 932 15 70 2 59 0 o o _ _5 _ 3 P _ L 59 n L _k ET S iN...

Page 6: ...T 024040 030040 036090 042060 042090 2 2 1 2 3 3 1 2 3 1 2 438 488 511 514 522 10 3 11 5 9 7 14 0 14 0 0 040 0 038 0 035 0 040 0 040 N A 0 038 0 035 0 042 0 042 2Ton 3Ton 3Ton 4Ton 4Ton EA36YD129 EA36...

Page 7: ...ed cooling airflow or the heating airflow velocity of 300 ftimin ute for throwaway type or 450 ftimimlte for high capacity type Air filter pressure drop for non standard filters must not exceed 0 08 i...

Page 8: ...erty damage Do not strip screws when re securing the unit If a screw is stripped replace the stripped one with a larger diameter screw included Rig_in_ Liftin_ of Unit 1 Bend top of brackets down appr...

Page 9: ...es Follow latest Sheet Metal and Air Conditioning Contractors National Association SMACNA and Air Conditioning Contractors Association ACCA minimum installation standards for residential heating and a...

Page 10: ...25ram MIN Fig 9 Condensate Trap 099013 Step 8 Install Gas Piping The gas supply pipe enters the unit through the access hole provided The gas connection to the unit is made to the 1 2 in FPT gas inlet...

Page 11: ...r to the unit rating plate NEC and local codes for maximum fuse circuit breaker size and minimum circuit amps ampacity for wire sizing See Table 3 for electrical data The field supplied disconnect may...

Page 12: ...RATURE SENSOR USINGTHE INFINITY CONTROL BOARD OATTERMINALS ISREQUIRED MANY INFINITY FEATURES AUTOHUMIDITY CONTROL COMFORT ROLLBACK ETC WILL BE LOST IFTHE OAT ISNOT CONNECTED Fordetailed mounting instr...

Page 13: ...TO DISCONNECT PER NEC L2 GROUND SCREW IN SPLICE BOX NOTE Use copper wire only LEGEND NEC National Electrical Code Field Wiring _ Splice Connections Fig 12 Line Power Connections A06299 HP AC Board Sp...

Page 14: ...load equipment refer to NEC Articles 430 and 440 the overcurrent protective de ice for the unit shall be Power Supply fuse The CGA Canadian Gas Association units may be fuse or circuit breaker 2 Minim...

Page 15: ...ectly positioned in fan orifice Top 1 3 of condenser fan blade should be within fan orifice venturi c Ensure fan hub is positioned correctly with respect to motor housing See Fig 23 d Make sure that a...

Page 16: ...SLOWLY 1 Low static pressure loading ofblower while access panel is removed willcause blower torun slowly Particularly atlow airflow requests This isnormal do not assume afault exists 2 Recheck airfl...

Page 17: ...1 J US COPP R CONDUCTORS ON G Ym L2 L2 Ey_ 12 BK FiEf D SJPPLY 208 230 VAC 60 JZ 3P i l co_f COT r H 0 _ I r RE__Y RE or S_AR_ Rco tRot 230V TsArs C SE Z CONNECT ON liI N DIA_R_BI DANGER ECTRiCA SkOC_...

Page 18: ...m defectNe switch or connections or inadequate combustion air supply flame roll out switch open STATUS CODE 34 IGNITION PROVING FAILURE Control will try three more times before lockout 14 occurs If fl...

Page 19: ...defrost There is a ten minute staging timer on first stage gas If call for heat still exists after 10 minutes the system will stage to second stage gas and run until the call for heat is satisfied NO...

Page 20: ...pressor voltage sensed then disappears while cooling or heat High Stage Ther mal Cutout 72 ing demand exists Possible causes are internal compressor over Ioad trip or start relay not releasing if inst...

Page 21: ...ce the dip switches are not used AUTO defrost adjusts the defrost interval time based on the last defrost time as follows When defrost time 3 minutes the next defrost interval 120 minutes When defrost...

Page 22: ...4 second post purge period The indoor blower and air cleaner terminal EAC 1 will remain energized for 90 120 150 or 180 seconds depending on selection of blower off delay selected in the UI The factor...

Page 23: ...eing installed Assume that the size of the dial is 2 cubic ft one revolution takes 129 sec and the heating value of the gas is 1050 Btu ft3 Proceed as follows a 129 sec to complete one revolution b 36...

Page 24: ...Turn ongas tounit e Check forleaks CHECK GAS INPUT PROPANE GAS Refer topropane kitinstallation instructions forproperly checking gas input NOTE For installations below 2 000 ft refer tothe unit rating...

Page 25: ...mponent test is completed one or more status codes 11 25 or 41 will flash See component test section or Status Code Label for explanation of status codes NOTE To repeat component test turn setup switc...

Page 26: ...board will enable the standard thermostat input terminals to allow simple thermostatic control of the 48DT unit For control with a standard thermostat disconnect the ABCD connectors from both control...

Page 27: ...31 25 336 99 94 89 79 2316 37 34 32 26 345 I01 96 91 81 2378 38 35 33 27 354 I03 98 93 83 2440 39 36 34 28 364 I05 100 95 85 2509 40 38 35 29 374 107 102 97 87 2578 41 39 36 30 384 I08 103 98 88 2647...

Page 28: ...the heating season For the first heating season inspect blower wheel bi monthly to determine proper cleaning frequency Step 4_Limit Switch Remove unit access panel to gain access to tire limit switch...

Page 29: ...Detecting oil generally indicates a refrigerant leak If oil is detected or if low performance is suspected leak test all refrigerant tubing using an electronic leak detector or liquid soap solution If...

Page 30: ...vice that may risk exposure of compressor oil to the roof take appropriate precautions to protect roofing Procedures which risk oil leakage include but are not limited to compressor replacement repair...

Page 31: ...may bestuck closed orthere isawiring error The control willflash the appropriate fault code COMPRESSOR THERMAL CUTOUT Ifthe control senses the compressor voltage after start up and is then absent for...

Page 32: ...or should fail lowambient cooling willnot be allowed Defrost willoccur ateach time interval during heating operation but willterminate after 5minutes If there isathermistor outofrange error defrost wi...

Page 33: ...ide with 520 psig low side retard Use hoses with 750 psig service pressure rating Leak detectors should be designed to detect HFC refrigerant Puron as with other HFCs is only compatible with POE oils...

Page 34: ...maged reversing valve Restriction in refrigerant system Dirty air filter Unit undersized far load U temperature set too low too high Law refrigerant charge Air in system Outdoor coil dirty er restrict...

Page 35: ...Lnadequate heating Poor flame characteristics CAUSE Water in gas line No power to unit No 24 v power suppmy to contr circuit Mis wired or loose connections Misaligned spark electrodes No gas at main...

Page 36: ...START UP ELECTRICAL SUPPLY VOLTAGE COMPRESSOR AMPS INDOOR EVAPORATOR FAN AMPS TEMPERATURES OUTDOOR CONDENSER AIR TEMPERATURE DB RETURN AIR TEMPERATURE DB WB COOLING SUPPLY AIR DB WB GAS HEAT SUPPLY A...

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