Connection Of Piping - Outdoor - LG MU5R40 Installation Manual

FLARING WORK AND CONNECTION OF PIPING
16
Check
- Compare the flared work with figure below.
- If flare is noted to be defective, cut off the
flared section and do flaring work again.

Connection of piping - Outdoor

Align the center of the piping and sufficiently
tighten the flare nut by hand.
Connecting pipe order
1) ROOM A~E gas side pipe
2) ROOM A~E 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 fol-
lows the arrow on the wrench.
Outside diameter
mm
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Ø19.05
Torque
N . m
inch
1/4 16±2
3/8 38±4
1/2 55±6
5/8 75±7
3/4 110±10
Smooth all round
Inside is shining without scratches.
= Improper flaring =
Inclined Surface
damaged
Even length
all round
Outdoor unit
Main liquid
side valve
Liquid
side piping
Cracked Uneven
thickness
Ø12.7(1/2 inch) Connector
Main gas
side valve
Gas side piping
ROOM A
ROOM B
ROOM C
ROOM D
ROOM E