Mitsubishi Electric CITY MULTI PUHY-P-YKB-A1 Manuel D'installation page 30

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9-7-2. Insulation for the section of the pipe that goes through a wall

(1) Inner wall (concealed)

(4) Floor (waterproof)

Insulation material

Caulking material

Waterproof layer

Sleeve with a flange

Caulk with a nonflammable material such as mortar.

Nonflammable insulation material

・When caulking the gaps with mortar, cover the section of the pipe that goes through the wall with a metal sheet to

prevent the insulation material from sagging. For this section, use nonflammable insulation and covering materials.

(Vinyl tape should not be used.)

(2) Outer wall

(5) Rooftop pipe shaft

(3) Outer wall (exposed)

(6) Protecting the penetrating parts in a fire limit zone

or through a parting wall