LG Multi V - 4. Piping Diagrams

Piping Diagrams
- 45 -
Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
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
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
PRHR042A