Minimum Clearance To Combustible Enclosures - Napoleon Ascent X 70 Installation Manual

rough framing
EN
3.2

minimum clearance to combustible enclosures

1" [25mm] minimum all sides for vertical venting
above enclosure ceiling. When passing through a
ceiling, use firestop W500-0028 (not supplied).
1½" [38mm] minimum all sides for vertical venting
inside the enclosure.
78"
[198.1cm]
ceiling
59 1/2"
[151.1cm]
enclosure
height
* Refer to "venting requirements" and "venting installation" sections.
** Clearances within the enclosure may be higher (refer to "minimum framing dimensions" section).
16
W415-2371 / D / 01.05.21
Mylar
sleeve
Non-combustible
material
6 3/4"
[171.5mm]
Steel stud frame
34 7/8"
[88.6cm]
1" [25mm]
Combustible Non-combustible
Brick
3"
[76mm]
to top
5 3/4"
[146mm]
2"
[51mm] to
sides / bottom
Firestop
assembly
(not supplied)
1" [25mm]
0" [0mm] if non-combustible
finishing material is used
such as brick and stone.
49 3/4"
[126.4cm]
minimum
plus rise *