Thermal Insulation For Pipes - Mitsubishi Electric CITY MULTI PURY-WP200YJM-A Installationshandbuch

9-7. Thermal insulation for pipes

Insulate pipes to prevent condensation.
- Condensation may collect and drip from the unit onto the ceiling or floor.
Insulate the high- and low-pressure pipes, and liquid and gas pipes separately with polyethylene foam insulation
materials. Inadequate insulation may cause condensation to drip. Pipes in the ceiling are especially vulnerable to
condensation and require adequate insulation.
9-7-1. Insulation material
・Check that the insulation materials meet the standards in the table below.
Between an outdoor unit and HBC controller
Thickness [mm (in)]
Heat resistance
Between an HBC controller and indoor unit
Refer to the HBC controller Installation Manual for details.
Ⓒ
Ⓑ
Ⓐ
Ⓓ
Ⓔ
Glass fiber + Steel wire
Insulation
material A
Adhesive + Heat-resistant polyethylene foam + Adhesive tape
Indoor
Outer
Under the floor and exposed
covering B
Outdoor
* If a polyethylene cover is used as an outer covering, asphalt roofing is not necessary.
・Do not insulate the electric wires.
Ⓑ
Ⓐ
Ⓑ
Ⓒ
Ⓓ
Ⓔ
WT08842X01
High-pressure pipe
Min. 10 (7/16)
Min. 120°C (248°F)
Ⓐ
Steel wire
Ⓑ Pipe
Ⓒ Oily mastic asphalt or asphalt
Ⓓ Insulation material A
Ⓔ Outer covering B
Vinyl tape
Waterproof hemp cloth + Bronze asphalt
Waterproof hemp cloth + Zinc plate + Oily paint
Ⓐ High-pressure pipe or liquid pipe
Ⓔ
Ⓔ
Ⓑ
Low-pressure pipe or gas pipe
Ⓐ
Ⓒ Electric wire
Ⓓ Finishing tape
Ⓔ Insulation material
Ⓒ
Ⓓ
Low-pressure pipe
Min. 20 (13/16)
GB-31