Mitsubishi Electric CITY MULTI PUHY-P-YSMF-B Manuel D'installation page 26

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
H Lagging material
Branch piping section
26
C
Insulate the header using the insula-
tion material attached to the branch
pipe kit as shown in the figure.
Outer wall
D
A B
Roof pipe shaft
G
D
B
H
F
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
Penetrating portion on fire limit and boundary wall
I
A
1m 1m
J