Pumped Refrigerant System Operation and Maintenance12
OA Piping Diagram
Item Description Item Description
Supply air temperature sensors
Solenoid valve
Micro-channel coil
Supply liquid temperature sensor
Fans
Refrigerant liquid pressure sensor
Return air temperature sensors
Evaporator pressure regulator (EPR)
Electronic expansion valve (EEV)
Refrigerant vapor pressure sensor
Remote rack inlet temperature sensor
Return vapor temperature sensor
Return air
Supply air
To RDUFrom RDU
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