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 Unit
Indoor Unit
Indoor Unit
Indoor HEX
Indoor HEX
Indoor HEX
Indoor HEX
Fan
Fan
Fan
Fan
EEV
EEV
EEV
M
Outdoor
Sensor
Temperature
Outdoor Unit HEX
Outdoor Unit HEX
Temperature Sensor
Outdoor Unit HEX
Temperature Sensor
Low Hot
Temperature Sensor
High Pressure
Sensor
Vapor Valve
4-Way Valve 2
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 Oil Separator
Temperatue Sensor
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
Comp 1 Vapor
Injection Injection
Pressure Sensor
Comp 2 Vapor
Pressure Switch
Remarks
Temperature Sensor
SVC Valve EEV
Check Valve
Strainer
Solenoid Valve
M
Fan
Motor
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