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11
REAR WALL CLEARANCES
For the minimum clearances between the unit and rear walls,
your setup must fall within one (or more) of the following:
A. Clearance between unit and strictly non-combustible
rear wall
(
i.e. brick wall, see Fig. 11-1)
• The unit must have a minimum clearance of 4" from
the non-combustible rear wall.
(To allow for proper ventilation and prevent dangerous
overheating.)
B. Clearance between unit and a protected combustible
rear wall
(i.e. a non-combustible wall in front of a combustible wall
to serve as a barrier. This can be accomplished by brick,
or a metal stud finished with non-combustible substrate,
see Fig. 11-2)
• The unit must have a minimum clearance of 14" from
the protected combustible rear wall.
(The 4" non-combustible material plus an additional 10"
clearance between the unit and protected rear wall.)
C. Clearance between unit and combustible rear wall
• The unit must have a minimum clearance of 18" from
the combustible rear wall (see Fig. 11-3).
BACKSPLASH CLEARANCE (if applicable)
If a non-combustible backsplash exists, it must have a minimum
of a 4" clearance from the rear of the unit (to allow for proper
ventilation and prevent dangerous overheating). See Fig. 11-4.
Important: This 4" backsplash clearance must first be met
prior to any non-combustible walls beginning
behind it.
SIDE WALL / CORNER WALL CLEARANCES
(if applicable)
The unit must have a minimum clearance of 24" from any
side walls (to account for variables in airflow that could affect
performance). See Fig. 11-5.
INSTALLATION REQUIREMENTS (Cont.)
Non-combustible
Backsplash
Min.
4"
Fig. 11-4 Backsplash clearance
Non-combustible
Min.
4"
(Clearance required for
rear wall)
Fig. 11-1 Clearance 'A' Diagram
Min.
14"
Non-combustible
substrate
Non-combustible 4"
Com-
bustible
(Clearance required for
rear wall)
Fig. 11-2 Clearance 'B' Diagram
Combustible
Min.
18"
(Clearance required for
rear wall)
Fig. 11-3 Clearance 'C' Diagram
Fig. 11-5 Side/corner wall clearance
Min.
24"
Clearances continued on following page
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