Multi F LMU540HV Installation Manual

Installation Manual 39
ENGLISH
Flaring Work and Connection of Piping
Align the center of the piping and sufficiently
tighten the flare nut by hand.
Connecting pipe order
1) A~D-UNIT gas side pipe
2) A~D-UNIT 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.
Main gas
side valve
Main liquid
side valve
Gas side piping
Liquid
side piping
A-UNIT
B-UNIT
C-UNIT
D-UNIT
Outdoor unit(36 kBtu/h class)
Connection of piping - Outdoor
(Only Indoor Units
18 kBtu/h class )
Outside diameter Torque
mm inch N. m kgf.m lbf.ft
Ø6.35 1/4 14~18 1.4~1.8 10~13
Ø9.52 3/8 34~42 3.5~4.3 25~31
Ø12.7 1/2 49~61 5.0~6.2 36~45
Ø15.88 5/8 69~82 7.0~8.4 51~60
Ø19.05 3/4 100~120 10.0~12.2 73~88