Heat Insulation Of Refrigerant Piping - LG MULTI V S ARUV040GSR0 Installation Manual

1,MFL67798026,영영 19. 3. 14. 영영 4:49 Page 46
PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
46

Heat insulation of refrigerant piping

Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe sepa-
rately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint
between indoor unit and insulating material, and insulating materials themselves. When insula-
tion work is insufficient, there is a possibility of condensation drip, etc. Pay special attention to in-
sulation work to ceiling plenum.
Ⓐ Heat insulation material
Ⓑ Pipe
Ⓒ Outer covering(Wind the connection part
and cutting part of heat insulation material
with a finishing tape.)
• Do not insulate gas or low pressure pipe and liquid or high
pressurepipe together.
Bad
example
Good
example
Liquid pipe
Gas pipe
Power cables
Penetrations
Inner wall (concealed)
A
B
Floor (fireproofing)
D
F
G
B
Liquid pipe
Gas pipe
Power cables
Finishing tape
Insulating material
Communication cables
Power cables Communication cables
Separ
-ation
Insulating material
Communication cables
Outer wall Outer wall (exposed)
D
C
B
A
Penetrating portion on fire
Roof pipe shaft limit and boundary wall
I
G
D
B
H
A
F
1m
Heat insulation Adhesive + Heat - resistant poly-
material ethylene foam + Adhesive tape
Indoor
Floor ex- Water-proof hemp cloth +
Outer
posed
covering
Outdoor Water-proof hemp cloth +
NOTE
!
When using polyethylene cover as cover-
ing material, asphalt roofing shall not be
required.
• Be sure to fully insulate connecting portion.
Ⓐ Sleeve
Ⓑ Heat insulating material
E Ⓒ Lagging
B
Ⓓ Caulking material
Ⓔ Band
I Ⓕ Waterproofing layer
Ⓖ Sleeve with edge
Ⓗ Lagging material
Ⓘ Mortar or other incombustible caulking
Ⓙ Incombustible heat insulation material
J
When filling a gap with mortar, cover the
penetration part with steel plate so that
the insulation material will not be caved
in. For this part, use incombustible mate-
rials for both insulation and covering.
1m
(Vinyl covering should not be used.)
Vinyl tape
Bronze asphalt
Zinc plate + Oily paint
These parts are not insulated.