Manuals / Brands / Household Appliance / Air Conditioner / Carrier / Household Appliance / Air Conditioner

Carrier 50ZH024-060 Fig. 24Typical Heat Pump Operation, Cooling Mode

1 24

Download 24 pages, 1.47 Mb

Fig. 24–Typical Heat Pump Operation, Cooling Mode

C95044

STRAINER

ACCUMULATOR

COMPRESSOR

STRAINER

LCS

OUTDOOR COIL INDOOR COIL

A

B

D

C

Check Valves

AClosed

BOpen

CClosed

DOpen

LEGEND

LCS Loss of Charge Switch

Acutrol Metering Device

Check Valve (Arrow indicates direction of flow)

COOLING CYCLE

1. Hot gas from compressor flows through the 4-way valve and is

directed to the heating liquid line check valve. It is then con-

densed and subcooled through converging circuits. Refrigerant leaves

the outdoor coil by way of the strainer and the check valve in the

cooling liquid line.

2. The refrigerant then feeds the indoor coil through the Acutrol

metering device on each circuit.

3. Each circuit evaporates the refrigerant and the circuits are com-

bined in the indoor coil header with some of the circuits flowing

through the check valve.

4. The refrigerant then flows through the 4-way valve, accumulator,

and back to the compressor.

Contents

Main 50ZH024-060 Packaged Heat Pump Units Installation, Start-Up and Service Instructions Fig. 1Unit 50ZH Page Fig. 2Unit Base Dimensions, 50ZH024-030 C00156 REQUIRED CLEARANCE FOR OPERATION AND SERVICING REQUIRED CLEARANCE TO COMBUSTIBLE MA TL. NEC. REQUIRED CLEARANCES. Fig. 3Unit Base Dimensions, 50ZH036048 Fig. 4Unit Base Dimensions, 50ZH060 C00158 REQUIRED CLEARANCE FOR OPERATION AND SERVICING REQUIRED CLEARANCE T O COMBUSTIBLE MA TL. NEC. REQUIRED CLEARANCES. Fig. 5Shipping Location of Duct Flanges (Size 060 Only) Fig. 6Flanges Installed on 50ZH060 Units Fig. 7Area Not to Be Drilled More Than 3/4-in. Fig. 8Typical installation Fig. 9Condensate Trap (Using Tubing) Table 2Minimum Airflow for Safe Electric Heater Operation (CFM) Table 1 Physical Data Fig. 10PVC Condensate Trap Fig. 11Unit Electrical Connection Fig. 12Control Box Wiring Fig. 13Line Power Connections Fig. 14Control Connections Fig. 15ATypical Unit Electrical Diagram (208/230160) Fig. 15BAccessory Electric Heater Wiring Table 3Electrical Data50ZH Never operate a motor where a phase imbalance in supply volt- age is greater than 2%. Fig. 16Cooling Charging Chart, 50ZH024 Units Fig. 17Cooling Charging Chart, 50ZH030 Fig. 18Cooling Charging Chart, 50ZH036 Units Fig. 19Cooling Charging Chart, 50ZH042 Units Fig. 20Cooling Charging Chart, 50ZH048 Units Fig. 21Cooling Charging Chart, 50ZH060 Units Page Table 4Dry Coil Air Delivery* Horizontal Discharge (Deduct 10 percent for 208 Volt Operation) Table 5Wet Coil Pressure Drop Fig. 21Outdoor-Fan Adjustment (024048 Size) Fig. 22Outdoor-Fan Adjustment (060 Size) Table 6Filter Pressure Drop (in. wg) Table 7Accessory Electric Heat Pressure Drop (in. wg) Fig. 23Typical Heat Pump Operation, Heating Mode A B D C Fig. 24Typical Heat Pump Operation, Cooling Mode A C95044 B D C Fig. 2550ZH Balance Point Chart Balance Point Worksheet Building Heat Loss, BTUH Unit Integrated Heating Capacity (BTUH) Table 8TroubleshootingCooling and Heating START-UP CHECKLIST (REMOVE AND STORE IN JOB FILE)