Carrier 50ZHA024-060 Physical Data, Install Electrical Connections, HIGH-VOLTAGE Connections

Table 2—Physical Data

UNIT 50ZHA	024	030		036		042	048		060
OPERATING WEIGHT (lbs)	293	324		377		389	384		433
COMPRESSOR TYPE			Scroll				Ultra Tech Scroll
REFRIGERANT Charge (lb)					R-22
	7.5	10.3		10.3		11.9	11.4		13.3
REFRIGERANT METERING DEVICE		Accurater						TXV
Orifice ID (in.)	.067	.067		.082		.086	—		—
Orifice OD (in.)	.049	.057		.059		.063	.070		.073
CONDENSER COIL			Copper Tubes, Aluminum Plate Fins
Rows...Fins/in.	2...21	2...21		2...21		2...21	2...21		2...21
Face Area (sq. ft.)	11.1	12.7		15.8		15.8	13.3		15.8
CONDENSER FAN				Propeller
Nominal Cfm	2600	2600		3200		3200	3200		3300
Diameter (in.)	20	20		20		20	20		20
Motor HP (RPM)	1/8 (825)	1/8 (825)		1/4 (1100)		1/4 (1100)	1/4 (1100)		1/2 (1100)
EVAPORATOR COIL			Copper Tubes, Aluminum Plate Fins
	3...17	3...17		4...17		4...17	4...17		4...17
Face Area (sq. ft.)
	4.3	4.9		4.9		6.1	4.9		6.1
Evaporator Blower				Direct Drive
Nominal Airflow (CFM)	800	1000		1200		1400	1600		1875
Size (in.)	10 x 8	10 x 8		11 x 9		11 x 9	11 x 10		11 x 10
Motor HP (RPM)	1/2 (1050)	1/2 (1050)		3/4 (1050)		3/4 (1050)	1 (1050)		1 (1050)
CONNECTING DUCT SIZES				Round
Supply Air (in.)					14
Return Air (in.)
					14
Return-Air Filters (in.)*	24 x 24	24 x 24		24 x 24		24 x 30	30 x 30		30 x 30
Throwaway

*Required filter sizes shown are based on the ARI (Air Conditioning and Refrigeration Institute) rated airflow at a velocity of 300 ft/min for throwaway type or 450 ft/min for high capacity type. Recommended filters are 1-in. thick.

Step 7—Install Electrical Connections

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

The unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of an electrical wire connected to the unit ground in the control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code), ANSI (American National Standards Institute)/NFPA (latest edition) (in Canada, Canadian Elec- trical Code CSA C22.1) and local electrical codes.

UNIT DAMAGE HAZARD

Failure to follow these precautions may result in damage to the unit being installed:

1.Make all electrical connections in accordance with NEC ANSI/NFPA (latest edition) and local electrical codes governing such wiring. In Canada, all electrical connec- tions must be in accordance with CSA standard C22.1 Canadian Electrical Code Part 1 and applicable local codes. Refer to unit wiring diagram.

2.Use only copper conductor for connections between field-supplied electrical disconnect switch and unit. DO NOT USE ALUMINUM WIRE.

3.Be sure that high-voltage power to unit is within operating voltage range indicated on unit rating plate.

4.Insulate low-voltage wires for highest voltage contained within conduit when low-voltage control wires are run in same conduit as high-voltage wires.

5.Do not damage internal components when drilling through any panel to mount electrical hardware, conduit, etc. Consult local power company for correction of improper voltage.

HIGH-VOLTAGE CONNECTIONS

The unit must have a separate electrical service with a field- supplied, waterproof disconnect switch mounted at, or within sight from the unit. Refer to the unit rating plate for maximum fuse/circuit breaker size and minimum circuit amps (ampacity) for wire sizing. See Table 6 for electrical data.

The field-supplied disconnect may be mounted on the unit over the high-voltage inlet hole. (See Fig. 2.)

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