PIPE CONNECTIONS BETWEEN INDOOR AND OUTDOOR UNIT
47
ENGLISH
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.)
Penetrations
Heat insulation
material
Adhesive + Heat - resistant poly-
ethylene foam + Adhesive tape
Outer
covering
Indoor Vinyl tape
Floor ex-
posed
Water-proof hemp cloth +
Bronze asphalt
Outdoor
Water-proof hemp cloth +
Zinc plate + Oily paint
NOTE
!
When using polyethylene cover as cover-
ing material, asphalt roofing shall not be
required.
Bad
example
• Do not insulate gas or low pressure pipe and liquid or high
pressurepipe together.
Liquid pipe
Gas pipe
Power cables
Finishing tape
Insulating material
Communication cables
• Be sure to fully insulate connecting portion.
These parts are not insulated.
Good
example
Liquid pipe
Communication cables
Communication cables
Separ
-ation
Gas pipe
Power cables
Insulating material
Power cables
Ⓐ Sleeve
Ⓑ Heat insulating material
Ⓒ Lagging
Ⓓ Caulking material
Ⓔ Band
Ⓕ Waterproofing layer
Ⓖ Sleeve with edge
Ⓗ Lagging material
Ⓘ Mortar or other incombustible caulking
Ⓙ Incombustible heat insulation material
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.
(Vinyl covering should not be used.)
1m1m
A
B
D
F
F
G
B
G
D
B
H
I
J
A
E
B
I
A
B
D
C
Inner wall (concealed)
Floor (fireproofing)
Penetrating portion on fire
limit and boundary wall
Roof pipe shaft
Outer wall Outer wall (exposed)
Heat insulation of refrigerant piping
1,MFL67798027,영영 2018. 6. 18. 영영 3:07 Page 47
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