s
s
s
s
s
s
s
s
s
s
s
s
s
HR unit
s
s
s
s
s
s
s
s
s
EEV
Indoor Unit
Indoor HEX
Fan
EEV
Indoor Unit
Indoor HEX
Fan
EEV
Indoor Unit
Indoor HEX
Fan
EEV
Indoor Unit
Indoor HEX
Fan
M
M
Fan
Motor
Outdoor
Sensor
Outdoor Unit HEX
Temperature
Outdoor Unit HEX
Temperature Sensor
Outdoor Unit HEX
Temperature Sensor
Low Hot
Temperature Sensor
High Pressure
4-Way Valve 2
Sensor
Vapor Valve
Suction
4-Way Valve 1
Sensor
Receiver
Temperature
Receiver
Outlet
Low
Pressure Sensor
Oil
Balance
Oil
Balance
Comp 1
Discharge
Comp 2
Discharge
Temperatue Sensor
Oil Separator
Temperatue Sensor
Oil Separator
Liquid Pipe
Temperature Sensor
Low Pressure Vapor Pipe
Liquid Pipe
High Pressure Vapor Pipe
Inverter
Comp 1
Inverter
Comp 2
Sub-Cooling Circuit
Sub-Cooling HEX
Sub-Cooling Circuit Inlet
Outlet Temperature Sensor
SC
EEV
Temperature Sensor
Accum
Pressure Switch
Upper Hot
Upper Outdoor EEV
Low Outdoor
Vapor Valve
EEV
Receiver
Inlet
SC
Suction
Oil Return
Heatsink
Active Path
Valve
Injection
Comp 1 Vapor Comp 2 Vapor
Injection
Pressure Sensor
Pressure Switch
Remarks
Temperature Sensor
SVC Valve EEV
Check Valve
Strainer
Solenoid Valve
High Temperature High Pressure Vapor
High Temperature High Pressure Liquid
High Temperature High Pressure Liquid (Conditional)
Low Temperature Low Pressure Vapor
Bypass EEV
Bypass Temp
Comp 1
Dome
Sensor
Temperature
Comp 2
Dome
Sensor
Temperature
5. Piping Diagrams