Thermal Insulation Of Refrigerant Pipe - LG APUW100LFT0 Installation Manual

CONNECTING PIPES
20

Thermal insulation of refrigerant pipe

Be sure to give insulation work to refrigerant pipe by covering liquid pipe and gas pipe separately
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
insulation 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.)
B
Liquid pipe
Good example
A
Gas pipe
B
C Power wiring cable
Insulating material
D
Communication wiring cable
E
Do not insulate gas or low pressure pipe and liquid or high
•
pressure pipe together.
CAUTION
!
Cutting line of insulation must look upper direction. Thickness of insulation is 15 mm
(Gas pipe) and 19 mm (Liquid pipe) or over.
NOTE
!
Recommended Insulation material
Material : EPDM
Thickness : 15 mm (Gas pipe) and 19 mm (Liquid pipe) or over.
Density : less than 0.032 ±0.005(g/cm
Thermal conductivity : less than 0.03(kcal/m.hr.°C)
Communication
Power wiring
C
cable
D
D
A
E
Separation
2
)
Heat insulation Adhesive + Heat - resistant poly-
material ethylene foam + Adhesive tape
Indoor
Floor
Outer
exposed
covering
Outdoor Water-proof hemp cloth +
NOTE
!
When using polyethylene cover as cover-
ing material, asphalt roofing shall not be
required.
wiring cable
Be sure to fully insulate connecting portion.
•
Vinyl tape
Water-proof hemp cloth +
Bronze asphalt
Zinc plate + Oily paint