LG Multi F A2UW14GFA0 Engineering Product Data Book page 358

3. Installation of outdoor unit
a) Align the center of the pipings and sufficiently tight-
en the flare nut by hand.
b) Tighten the flare nut with a wrench.
c) Wrap the insulation material around the connect-
ing portion.
① Overlap the Refrigarant cable insulation material and the
indoor unit pipe insulation material. Bind them together
with vinyl tape so that there is no gap.
② Wrap the area which accommodates the rear piping
housing section with vinyl tape.
③ Align the center of the piping and sufficiently tighten the
brass cap by hand.
④ Tighten the brass cap with a wrench.
⑤ Wrap the joint part with insulation.
CAUTION
• Never use the plastic cap for sealing.
• Make sure to use brass cap with the end of pipe sealed or
welded tightly.
⑤ Branch pipe connection (BD unit ÷ indoor unit)
a) While piping installation you must use the connector.
• PMBD36** BD Unit
Indoor Units Gas
ⓐ
18k, 24k
Ø9.52(3/8)'Ø12.7(1/2)
b) Align the center of the pipings and sufficiently tighten the
flare nut by hand
a
*Connecting pipe size
Indoor Units
5k
7k
9k
12k
18k
24k
63 _
Heat pump 50Hz/R410A
[Unit : mm(inch)]
Liquid
ⓑ ⓐ
Not necessary
b
[Connector]
[Unit : mm(inch)]
Gas side Liquid side
Ø9.52(3/8) Ø6.35(1/4)
Ø9.52(3/8) Ø6.35(1/4)
Ø9.52(3/8) Ø6.35(1/4)
Ø9.52(3/8) Ø6.35(1/4)
Ø12.7(1/2) Ø6.35(1/4)
Ø12.7(1/2) Ø6.35(1/4)
CASE. 1
Ø 9.52
BD Unit side flare
CASE. 2
Ø 9.52
BD Unit side flare
Torque
wrench
ⓑ
[Unit : mm]
Indoor unit side flare
Ø 9.52(7k/9k/12k Btu/h)
Pipes
Flare nut
Pipes
Indoor unit side flare
Flare nut
Ø12.7(18k/24k Btu/h)
Connecting socket
Spanner (fixed)
Flare nut
Connection pipe