Mitsubishi Electric City Multi Y Série Manuel D'installation page 22

Penetrations
Inner wall (concealed)
A B
Floor (fireproofing)
D
F
G
B
A Sleeve
B Heat insulating material
C Lagging
D Caulking material
E Band
F Waterproofing layer
G Sleeve with edge
Branch piping section
22
Outer wall
D
C
Roof pipe shaft
G
Insulate the header using
the insulation
material attached to the
branch pipe kit
as shown in the figure.
A B
Penetrating portion on fire limit and boundary wall
D
B
H
F
H Lagging material
I Mortar or other incombustible caulking
J Incombustible heat insulation material
When filling a gap with mortar, cover the penetration part with steel plate
so that the insulation material will not be caved in. For this part, use
incombustible materials for both insulation and covering. (Vinyl covering
should not be used.)
Outer wall (exposed)
E
B
I
I
J
A
1m 1m