LG LMN078HVT Installation Manual

30 Multi Air Conditioner
Flaring Work and Connection of Piping
Align the center of the piping and sufficiently
tighten the flare nut by hand.
Connecting pipe order
1) ROOM A~C gas side pipe
2) ROOM A~C liquid side pipe
Finally, tighten the flare nut with torque wrench
until the wrench clicks.
• When tightening the flare nut with torque
wrench ensure the direction for tightening
follows the arrow on the wrench.
Ø 12.7(1/2 inch)
Connector
Outdoor unit
Liquid
side piping
Main Liquid
side valve
Main gas
side valve
ROOM A
ROOM B
ROOM C
Gas side
piping
Connection of piping - Outdoor
Outside diameter Torque
mm inch N
.
m kgf
.
m lbf
.
ft
Ø 6.35 1/4 14~18 1.4~1.8 10~13
Ø 9.52 3/8 34~42 3.5~4.3 25~31
Ø 12.7 1/2 49~61 5.0~6.2 36~45
Ø 15.88 5/8 69~82 7.0~8.4 51~60
Ø 19.05 3/4 100~120 10.0~12.2 73~88
Outdoor unit (36,42 kBtu/h class)
(only indoor units
18,24 kBtu/h class)
(only indoor units
36 kBtu/h class- connect “D ROOM”)
(BD Unit : PMBD3641)
(BD Unit : PMBD3640)
A ROOM
B ROOM
C ROOM
D ROOM
A ROOM
B ROOM
C ROOM
D ROO
M
BD Unit
Refrigerant Connections Pipe
Size (inch (mm))
Connectable
Indoor Unit
Capacity (kBtu/h
class)
Liquid Gas
PMBD3620
1/4 (Ø 6.35)
x 2 EA
3/8 (Ø 9.52) x 2
EA
7,9,12,15,18,24 k
PMBD3630
1/4 (Ø 6.35)
x 3 EA
3/8 (Ø 9.52) x 3
EA
7,9,12,15,18,24 k
PMBD3640
1/4 (Ø 6.35)
x 4 EA
3/8 (Ø 9.52) x 4
EA
7,9,12,15,18,24 k
PMBD3641
1/4 (Ø 6.35)
x 4 EA
3/8 (Ø 9.52)
x 3 EA
7,9,12,15,18,24 k
(A,B,C ROOM)
1/2 (Ø 12.7)
x 1 EA
24,36 k
(D ROOM)
h BD Unit(PMBD3641) includes the socket.
(Ø 12.7 → Ø 15.88 x 1 EA, Ø 6.35 → Ø 9.52 x 1 EA)

LG LMN078HVT Specifications

General

Brand	LG
Model	LMN078HVT
Category	Air Conditioner
Language	English