Mitsubishi Electric City Multi PURY-HP-TNU-A Série Manuel D'installation page 25

Between a BC controller and indoor unit (R2 system)
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 covering B Under the floor and exposed
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.
9-7-2. Insulation for the section of the pipe that goes through a wall
(1) Inner wall (concealed)
Ⓐ Ⓑ
(4) Floor (waterproof)
Ⓓ
Ⓕ
Ⓖ
Ⓑ
Sleeve
Ⓐ
Insulation material
Ⓑ
Lagging
Ⓒ
Caulking material
Ⓓ
Band
Ⓔ
Waterproof layer
Ⓕ
Sleeve with a flange
Ⓖ
WT09112X02
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
High-pressure pipe or liquid pipe
Ⓐ
Ⓔ
Ⓔ
Low-pressure pipe or gas pipe
Ⓑ
Ⓐ
Electric wire
Ⓒ
Finishing tape
Ⓓ
Insulation material
Ⓔ
Ⓒ
Ⓓ
(2) Outer wall
Ⓓ
Ⓒ
Ⓐ
Ⓑ
(5) Rooftop pipe shaft
Ⓓ
Ⓑ
Ⓒ
Ⓕ
ø28.58 (ø1-1/8)–ø38.1 (ø1–1/2)
Min. 15 (5/8)
(3) Outer wall (exposed)
Ⓔ
Ⓑ
Ⓗ
(6) Protecting the penetrating parts in a fire limit zone or through a
parting wall
Ⓗ
Ⓘ
Ⓐ
1000 1000
(39-3/8) (39-3/8)
GB-23
[mm (in)]