Carrier 50ZH024-060 instruction manual Physical Data

Table 1 Ð Physical Data

UNIT 50ZH	024	030		036		042	048	060
OPERATING WEIGHT (lbs)	232	254		277		295	328	368
COMPRESSOR TYPE					Scroll
REFRIGERANT Charge (lb)					R-22
	3.7	5.8		5.9		6.6	9.1	9.7
REFRIGERANT METERING DEVICE				Acutrol™ System
OUTDOOR COIL			Copper Tubes, Aluminum Plate Fins
Rows...Fins/in.	1...17	2...17		1...17		2...17	2...17	2...17
Face Area (sq ft)	7.9	6.7		11.1		9.3	11.1	12.7
OUTDOOR-FAN MOTOR CFM					Propeller
	1800	2000		2600		2600	2600	3200
Nominal Rpm
	825	1100		1100		1100	1100	1100
Motor Hp
	1/8	1/4		1/4		1/4	1/4	1/2
Diameter (in.)
	20	20		20		20	20	20
INDOOR COIL			Copper Tubes, Aluminum Plate Fins
Rows...Fins/in.	2...15	3...15		3...15		3...15	4...15	4...15
Face Area (sq ft)	3.1	3.1		4.0		4.0	4.4	4.9
INDOOR FAN MOTOR				Direct Drive
Blower Motor Size (in.)	10 x 8	10 x 8		10 x 9		10 x 9	10 x 9	10 x 10
Nominal Cfm	800	1000		1200		1400	1600	2000
Rpm Range	550-1000	550-1000		800-1050		800-1050	1000-1100	950-1100
Number of Speeds	3	3		3		3	2	3
Factory Speed Setting	Low	Med		Low		Med	Low	Low
Motor Hp	1/4	1/4		1/2		1/2	3/4	1
CONNECTING DUCT SIZES				Round				Square
Supply Air (in.)			14					13.9 x 13.9
Return Air (in.)			14					13.9 x 27.8
FIELD-SUPPLIED RETURN-AIR FILTER²	24 x 24	24 x 24		24 x 24		24 x 24	24 x 30	24 x 30
Throwaway (in.)

* 460-v motors are 2-speed or 3-speed.

²Required filter sizes shown are based on the ARI (Air Conditioning and Refrigeration Institute) rated airflow at a velocity of 300 ft/min for throwaw ay type or 450 ft/min for high capacity type. Recommended filters are 1-in. thick.

TRAP

OUTLET

1" min.

2" min.

C00009

Fig. 10±PVC Condensate Trap

The field-supplied disconnect may be mounted on the unit over the high-voltage inlet hole. See Fig. 2-4.

Operation of unit on improper line voltage constitutes abuse and may cause unit damage that could affect warranty.

ROUTING POWER LEADS INTO UNIT

Use only copper wire between disconnect and unit. The high- voltage leads should be in a conduit until they enter the unit; conduit termination at the unit must be watertight. Run the high-voltage leads through the hole on the control box side of the unit (see Fig. 11 for location). When the leads are inside the unit, run leads to the control box (Fig. 12). For single-phase units, connect leads to the black and yellow wires; for 3-phase units, connect the leads to the black, yellow, and blue wires (see Fig. 13).

CONNECTING GROUND LEAD TO UNIT GROUND

Refer to Fig. 12 and 13. Connect the ground lead to the chassis using the unit ground lug in the control box.

ROUTING CONTROL POWER WIRES

Form a drip-loop with the thermostat leads before routing them into the unit. Route the thermostat leads through grommeted hole provided in unit into unit control box (See Fig. 11). Connect thermostat leads and unit power leads as shown in Fig. 13 & 14.

Route thermostat wires through grommet providing a drip-loop at the panel. Connect low-voltage leads to the thermostat as shown in Fig. 14.

The unit transformer supplies 24-v power for complete system including accessory electrical heater. Transformer is factory wired for 230-v operation. If supply voltage is 208 v, rewire transformer primary as described in the Special Procedures for 208-v Opera- tion section below.

ACCESSORY ELECTRIC HEAT WIRING

Refer to accessory electric heat installation instructions for infor- mation on installing accessory electric heat. Accessory electric heat wiring is shown in Fig. 15A & 15B.

SPECIAL PROCEDURES FOR 208-V OPERATION

Make sure that the power supply to the unit is switched OFF and install lockout tag before making any wiring changes. Electrical shock can cause serious injury or death.

1.Remove wirenut from connection of ORG wire to BLK wire. Disconnect the ORG transformer-primary lead from the BLK wire. Save wirenut. See unit wiring label.

2.Remove the wirenut from the terminal on the end of the RED transformer-primary lead.

3.Save the wirenut.

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