High Flow Valves - Carrier 50ZH024-060 Installation, Start-Up And Service Instructions Manual

Check Valves
A
Open
B
Closed
C Open
D Closed
LCS
1. Hot gas from compressor flows through the 4-way valve and is
directed to the cooling liquid line check valve. It is then condensed
and directed through subcooling circuits and out to the strainer
and the check valve in the heating liquid line.
2. The refrigerant then feeds the outdoor coil through the Acutrol
metering device on each circuit.
Check valves are also located in the liquid lines near the strainers.
The Strainers are the larger of the two components.
Step 12—High Flow Valves
Located on the compressor hot gas and suction tubes are High
Flow Valves. Large black plastic caps distinguish these valves
with O-rings located inside the caps. These valves can not be
accessed for service in the field. Ensure the plastic caps are in
place and tight or the possibility of refrigerant leakage could occur.
OUTDOOR COIL
A
LEGEND
Loss of Charge Switch
Acutrol Metering Device
Check Valve (Arrow indicates direction of flow)
Fig. 23–Typical Heat Pump Operation, Heating Mode
B
LCS
STRAINER
C
HEATING CYCLE
3. Each circuit evaporates the refrigerant and the circuits are com-
bined in the outdoor 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.
19
INDOOR COIL
D
C95045