EN
W415-1707 / B / 06.04.18
25
rough framing - before appliance installation
4.1.1 minimum clearance to combustible enclosures
single-sided
The L series requires a minimum enclosure height of 73” (185.4cm) measured from the bottom of the appliance.
For temperature requirements, this area must be left unobstructed. Some venting configurations that require
more vertical rise will require a larger enclosure to provide minimum vertical clearance between vent pipes and
combustibles. It is also recommended that the enclosure be ventilated at the top and bottom to circulate the
hot air.
note:
Shaded components (finish framing) must
be non-combustible materials.
note:
3” [76mm] top (outside
of enclosure)
2” [51mm] sides /
bottom (outside of en-
closure)
0” to non-combustible
finishing such as brick
and stone
6” [152mm] minimum
(inside enclosure)
0” to bottom of the
appliance
0” to side standoffs
1/2” finishing flange
When passing through
a ceiling, use firestop
spacer W500-0028
(not supplied)
When passing through
a wall, use firestop
spacer W615-0162
(supplied with W010-
4178 firestop spacer
assembly)
1” [25mm] minimum
all sides for sections
of vertical venting.
Horizontal vent sections:
A minimum clearance of 3” (76mm) on the top outside of the enclosure and 2” (51mm) on
the sides and bottom outside of the enclosure all around the vent pipe on all horizontal runs to combustibles is required.
Horizontal vent sections within enclosures require a minimum clearance of 6”(152mm) at the top of the vent pipe.
Vertical vent sections:
A minimum of 1” (25mm) all around the vent pipe on all vertical runs to combustibles is required
except for clearances in appliances enclosures. Vertical vent sections within enclosures require a minimum clearance of
1” (25mm) around the vent pipe.
3” [76mm] top (outside of enclosure)
73”
minimum
2” [51mm] sides / bottom (outside of enclosure)
