LG Multi V PRHR041

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Only for training and service purposes
LGE Internal Use Only
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Piping Diagrams
4. Piping Diagrams
s
s
s
ss
sss
s
s
s
s
s
Low pressure gas pipe
Liquid pipe
High pressure gas pipe
Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe
s
Solenoid
EEV
Sensor
A
B
C
D
4.1 HR Unit
Ⓐ : To be switched operation between cooling and heating by two Solenoid valve
Ⓑ : To be used decreasing noise according to sub-cooling of inlet and outlet of indoor unit
(Simultaneous operation)
Ⓒ : To prevent liquid charging between high pressure gas valve and HR unit at cooling mode
Ⓓ : To be controlled the pressure between high and low pressure pipe during operation switching