Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 38AH044-084 specifications Ð Unit Control Box, Ð Condenser Fan Adjustment

Models: 38AH044-084

1 56

Download 56 pages 61.81 Kb

Page 51

Fig. 48 Ð Unit Control Box

	TRANSFORMERS
TIMERS
TIME-DELAY
RELAY
OIL PRESSURE	FUSE	TERMINAL	COMPRESSOR
SWITCHES	HOLDERS	BLOCKS	CONTACTORS

Fig. 48 Ð Unit Control Box

FAN CONTACTORS

COMPRESSOR CIRCUIT BREAKERS

FAN CIRCUIT

BREAKER

TERMINAL

BLOCKS

Required Compressor Modi®cation for 38AH044- 084 Optional Single-Circuit Units, When Com- pressor A1 is Out Ð To maintain unit operation, com- pressor no.1 must be operable. If it is not operable, the following temporary modi®cations must be made to keep the unit running:

1.	Change the oil pressure switch connections from com-
	pressor A1 to compressor A2.
2.	Connect compressor A2 into the Time Guard circuit as
	compressor A1 was originally.
3.	Open compressor A1 circuit breaker.

NOTE: Make sure the crankcase heaters are energized when compressors are off.

NOTE: Fan rotation is clockwise when viewed from top of unit.

Fig. 49 Ð Condenser Fan Adjustment

51

Image 51

Carrier 38AH044-084 specifications Ð Unit Control Box, Ð Condenser Fan Adjustment

Contents

Step 5 Ð Install Accessories CONTENTSSAFETY CONSIDERATIONS INSTALLATIONTable 1 Ð Rigging Center of Gravity Ð in. mm Refrigerant Charge Approximate Ð Lb Table 2A Ð Operational Corner Weights withTable 2B Ð Operational Corner Weights with Step 2 Ð Check Compressor MountingChart 1, Field Power Supply Connections Fig. 1 Ð Dimensions Ð Units 38AH044,054,064Chart 1, Field Power Supply Connections Fig. 2 Ð Dimensions Ð Units 38AH074,084DIAMETER Ð in. mm Fig. 3 Ð Dimensions Ð Unit 38AH094UNIT VOLTAGEDIAMETER Ð in. mm Fig. 4 Ð Dimensions Ð Unit 38AH104UNIT VOLTAGEDIAMETER Fig. 5 Ð Dimensions Ð Unit 38AH124UNIT VOLTAGEDIAMETER Ð Fig. 6 Ð Dimensions Ð Unit 38AH134UNIT VOLTAGE38AH 38AH RIG HERE RIG HERE and Sheet Metal Trim Kitand Sheet Metal Trim Unit 38AH134 Shown RIG HEREFig. 10 Ð Outer View, Compressor Mounting Fig. 9B Ð Field-InstalledSuction Line LoopFig. 9A Ð Typical Module with Cover Panels RemovedTable 5 Ð Liquid Lift Step 3 Ð Make Refrigerant Piping ConnectionsFig. 13 Ð Double Suction Riser Construction 38AH054-104 Dual-CircuitUnits Ð 60 Hz 38AH054-104 Dual-CircuitUnits Ð 50 Hz Optional Single-CircuitUnits and 38AH124,134 Modular Units Dual-CircuitÐ 60 HzModular Units Dual-CircuitÐ 60 Hz Modular Units Dual Circuit Ð 50 Hz Optional Single-CircuitUnits and 38AH124,134Modular Units Dual Circuit Ð 50 Hz TYP Ð Typical NOTE Lower split rst on, last off and 38AH094-134UnitsOptional Single-CircuitUnits LEGEND TXV Ð Thermostatic Expansion ValveFig. 16 Ð Units 38AH124 and 134 with Installed Connect Tubing from Evaporator to UnitPiping Kit Cover Unit 38AH134 Shown Kit RailsFig. 19 Ð Fully Assembled Piping and Trim Kit Unit 38AH134 ShownStep 4 Ð Make Electrical Connections OPTIONAL SINGLE-CIRCUITUNIT UNIT UNIT Table 14 Ð Fan Motor Electrical Data Page Field-supplied 38AH LENGTH Ð FU Ð Fuse FU Ð Fuse Field-supplied NOTES Field-supplied NOTES Field-supplied NOTES Step 5 Ð Install Accessories PRE-START-UPSystem Check START-UP Preliminary ChecksFig. 29 Ð 06E Compressors, Typical Adjust Refrigerant Charge If the initial check shows too much oil too high in the sight glass remove oil to proper level. See Preliminary Oil Charge for proper procedure for adding and removing oil Fig. 30 Ð Charging Chart Ð Unit 38AH044 50/60 Hz Ð Dual Circuit Fig. 32 Ð Charging Chart Ð Unit 38AH064 50/60 Hz Ð Dual Circuit Fig. 36 Ð Charging Chart Ð Unit 38AH044Charging Chart Ð Unit 38AH054 Fig. 35 ÐFig. 37 Ð Charging Chart Ð Unit 38AH064Charging Chart Ð Unit 38AH074 Fig. 39 Ð Charging Chart Ð Unit 38AH084Fig. 43 Ð Charging Chart Ð Module 134B Fig. 40 Ð Charging Chart Ð Unit 38AH094 50/60 HzFig. 41 Ð Charging Chart Ð Unit 38AH104 50/60 Hz Fig. 42 Ð Charging Chart Ð Modules 124A, 124BTable 17 Ð Fan Cycling Control Ð Psig kPag SERVICERefrigerant Circuit Compressor Motor ProtectionTable 18 Ð Pressure Switch Settings Psig kPag Fig. 44 Ð Unloader Location and SettingsCapacity Control Control for 38AH094-134Units Table 19A Ð One 2-StageThermostat CapacityControl for 38AH044-084 Dual-CircuitUnits Table 20 Ð One 2-StageThermostat CapacityCONTROL Fig. 45 Ð Accumulator and Fusible PlugFig. 46 Ð Pressure-ActuatedCapacity Control Valve Fig. 47 Ð Timer Cycle Fig. 48 Ð Unit Control Box Fig. 49 Ð Condenser Fan AdjustmentCompressor Replacement Ð Perform the following TROUBLESHOOTING TROUBLESHOOTING cont OUTDOOR UNIT START-UPCHECKLISTA. Preliminary Information B. Pre-Start-UpC. Start-Up