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MAGNUMZC MANUAL – April 2006
PAGE - -
16
HEARTH EXTENSION REQUIREMENTS
The
MAGNUM ZC
can be installed directly on a combustible or wood floor but we strongly recommend
placing a 3/8” thick rock board underneath the unit for added protection. HOWEVER, the floor of the
hearth extension (the area in front of the unit) must be protected from sparks and heat by a non-
combustible hearth extension. The minimum size of the protected area is 40”wide X 18”deep (1016 X 458
mm) extending in front of the loading door (SEE FIGURE 6). The
MAGNUM ZC
is certified for use
with either of the following installations:
ü
When installing the
MAGNUM ZC
and the hearth extension directly on a combustible floor, it is
REQUIRED that the hearth extension have an R value of 2.2 (3/8” rock board or mineral wool board)
OR
ü
If installing on a raised base or raised hearth, a “z” shaped piece of metal is used to join the underside
of the fireplace to the hearth extension (SEE FIGURE 7).
ü
Always install the hearth extension at least ¾” under the
MAGNUM ZC
fireplace.
ü
If hearth extension is equal or greater than 8” high and equal or greater than 16” deep, area in front
does not need protection.
40”
FIGURE 7
1”
17”
18”
H
EARTH
P
ROTECTION
40”
8”
MINIMUM
H
EAT
D
UCT
G
RILLS FOR
ZC-50