Thermal Insulation Of Refrigerant Piping - LG UB85W.N94R0 Installation Manual

Thermal insulation of refrigerant piping

Be sure to give insulation work to refrigerant piping 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 insulation 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.)
• Do not insulate gas or low pressure pipe and liquid or high
pressurepipe together.
Bad
example
Good
example
Liquid pipe
Gas pipe
Power cables
!
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)
Liquid pipe
Gas pipe
Power cables
Finishing tape
Insulating material
Communication cables
Power cables Communication cables
Separ
-ation
Insulating material
Communication cables
2 )
The indoor unit installation
Heat insulation Adhesive + Heat - resistant
material polyethylene foam + Adhesive tape
Indoor
Floor
Outer
exposed
covering
Outdoor
Note :
When using polyethylene cover as
covering material, asphalt roofing shall not
be required.
• Be sure to fully insulate connecting portion.
Vinyl tape
Water-proof hemp cloth +
Bronze asphalt
Water-proof hemp cloth +
Zinc plate + Oily paint
These parts are not insulated.
Installation Manual 13