LG MULTI V PRHR022 Installation Manual page 11

CAUTION
!
HR Unit should be installed that top side is facing up. If not, it may cause failure of the prod-
uct.
Top side
WARNING
!
Before brazing work, remove gas in the HR Unit by cutting the three pipes in the small cir-
cles on the figure. If not, it may cause injuries. Remove the caps before connecting pipes.
Liquid pipe
Low pressure gas pipe
High pressure gas pipe
Liquid pipe Liquid pipe Liquid pipe
Low pressure gas pipe Low pressure gas pipe Low pressure gas pipe
High pressure gas pipe High pressure gas pipe High pressure gas pipe
(Brazing Type)
After considering the indoor unit capacity,
determine the pipe sizes and cut the pipes connected to the indoor unit.
Gas pipe
CAUTION
!
• Whenever connecting the indoor units with the HR unit, install the indoor units in numeri-
cal order from No.1.
Ex) In case of installing 3 indoor units : No. 1, 2, 3 (O), No. 1, 2, 4 (X), No.1, 3, 4 (X), No.2,
3, 4 (X).
• Take care of no thermal damage on the valves of the HR uint.
(Especially packing part of valve) Wrap the valve with a wet towel when brazing it.
Ceiling
Ø15.88 Ø12.7
Cutting
Top side
Gas pipe Ø15.88– Ø12.7
Liquid pipeØ9.52– Ø6.35
Brazing Type
Ø9.52
Liquid Pipe
INSTALLATION
11
Top side
Ø6.35