Carrier 50ZH Series Installation, Start-up And Service Instructions Manual

Also see for 50ZH030: Installation, Start-Up and Service Instructions Product data Installation instructions Product data

A OpenB ClosedC OpenD ClosedLEGENDLCS Loss of Charge Switch] Acutrol Metering Devicer_ Check Valve indicates direction of(Arrow flow)HEATING CYCLE1. Hot gas from compressor flows through the 4-way valve and isdirected to the cooling liquid line check valve. It is then condensedand directed through subcooling circuits and out to the strainerand the check valve in the heating liquid line.2. The refrigerant then feeds the outdoor coil through the Acutrolmetering device on each circuit.3. Each circuit evaporates the refrigerant and the circuits are com-bined in the outdoor header with some of the circuits flowing th roughthe check valve.4. The refrigerant then flows through the 4-way valve, accumulator,and back to the compressor.Fig. 25-Typical Heat Pump Operation, Heating ModeC950452O