Piping Diagrams - LG MULTIV III Service Manual

Piping Diagrams

Piping Diagrams
1. HR Unit
Low pressure gas pipe
Liquid pipe
High pressure gas pipe
s
Solenoid
EEV
Sensor
Ⓐ : 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
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
B
A
s s
s
s
D
- 14 -
s s
s s
s
s
LGE Internal Use Only
s
C
s
s