Thermal Insulation For Pipes - Mitsubishi CITY MULTI PUHY-P-YKB-A1 Serie Manual De Instalación

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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 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.
Thickness [mm (in)]
Heat resistance
* The insulation thickness may need to be increased in high-temperature/humidity conditions.
* Even when specifications are defined by your client, the standards in the table should be met.
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.
・Make sure that the pipe connections all the way from the indoor unit are properly insulated.
KD79S703H01
Pipe size [mm (in)]
ø6.35 (ø1/4)–ø25.4 (ø1)
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
Liquid pipe
Gas pipe
Electric wire
Finishing tape
Insulation material
ø28.58 (ø1-1/8)–ø41.28 (ø1–5/8)
Min. 15 (5/8)
GB-27

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