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9
SIDE AND REAR WALL CLEARANCES
For the minimum clearances between the unit and any side
or rear walls, your setup must fall within one (or more) of the
following:
A. Clearance between unit and strictly non-combustible
wall
(i.e. brick wall, see Fig. 9-1)
• The unit must have a minimum of 4" right, left, and rear
clearance from any non-combustible wall.
(To allow for proper ventilation and prevent dangerous
overheating.)
B. Clearance between unit and a protected combustible
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. 9-2)
• The unit must have a minimum of 14" right, left, and
rear clearance from the protected combustible wall.
(The 4" non-combustible material plus an additional
10" clearance between the unit and protected wall.)
C. Clearance between unit and combustible wall
• The unit must have a minimum of 18" right, left, and
rear clearance from any combustible wall (see Fig. 9-3).
INSTALLATION REQUIREMENTS (Cont.)
Fig. 9-3 Clearance 'C' Diagram
Combustible
Min.
18"
(Clearance required for
right, left, and rear)
Fig. 9-1 Clearance 'A' Diagram
Non-combustible
Min.
4"
(Clearance required for
right, left, and rear)
Fig. 9-2 Clearance 'B' Diagram
Min.
14"
Non-combustible
substrate
Non-combustible 4"
Com-
bustible
(Clearance required for
right, left, and rear)
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