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
Temperature
Outdoor Unit HEX
Outdoor Unit HEX
Temperature Sensor
Outdoor Unit HEX
Temperature Sensor
Low Hot
Temperature Sensor
Vapor Valve
High Pressure
4-Way Valve 2
Sensor
Suction
4-Way Valve 1
Sensor
Receiver
Temperature
Receiver
Outlet
Low
Pressure Sensor
Oil
Balance
Oil
Balance
Comp 1
Discharge
Comp 2
Temperatue Sensor
Discharge
Oil Separator Oil Separator
Temperatue Sensor
Liquid Pipe
Temperature Sensor
Low Pressure Vapor Pipe
High Pressure Vapor Pipe
Liquid Pipe
Inverter
Comp 1
Inverter
Comp 2
Sub-Cooling Circuit
Sub-Cooling HEX
Sub-Cooling Circuit Inlet
Outlet Temperature Sensor
SC
Temperature Sensor
EEV
Accum
Pressure Switch
Upper Hot
Upper Outdoor EEV
Low Outdoor
EEV
Receiver
Inlet
SC
Vapor Valve
Suction
Oil Return
Heatsink
Active Path
Injection
Valve
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