LG MULTI V PRHR083A Installation Manual page 14

INSTALLATION
14
CAUTION
!
HR Unit should be installed that top side is facing up. If not, it may cause failure of the
product.
Top side
WARNING
!
Before brazing work, remove gas in the HR Unit by cutting the three pipes in the small
circles on the figure. If not, it may cause injuries. Remove the caps before connecting pipes.
High pressure
gas pipe
Liquid pipe
Low pressurse
gas pipe
(Brazing Type)
After considering the indoor unit capacity,
determine the pipe sizes and cut the pipes connected to the indoor unit.
Ø15.88(5/8)
Gas pipe
CAUTION
!
• Whenever connecting the indoor units with the HR unit, install the indoor units in
numerical 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
Top side
Ø12.7(1/2)
Cutting
Liquid Pipe
Top side
Gas pipe Ø15.88(5/8) – Ø12.7(1/2)
Liquid pipe Ø9.52(3/8) – Ø6.35(1/4)
Brazing Type
Ø9.52(3/8) Ø6.35(1/4)