Napoleon BGD36CFNTR Installation And Operating Instructions Manual page 30

0
bGD42CF MANTLE CLEARANCES AND ENCLOSURES
Combustible mantle clearance can vary according to the mantle depth. Figure 79. Use the graph to help evaluate the
clearance needed. These same requirements apply to any combustibles protruding on either side of the fireplace.
FIGURE 79
18"
FIGURE 80
12"
NONCOMBUSTIBLE
MATERIAL
FIGURE 81
M
A
N
T
L
E
FROM
TOP OF
OPENING
W45-0566 / A / 07..06
8" MANTLE
6" MANTLE
4" MANTLE
2" MANTLE
16"
14"
NONCOMBUSTIBLE
MATERIAL
12"
TOP OF FRONT
OPENING
TOP OF
COMBUSTIBLE
ENCLOSURE
HEAT
SHIELD
2"
1"
H
E
22
I
20
G
H
18
T
16
14
12
0
2 4 6 8 10 12
MANTLE WIDTH
FIRESTOP
SPACER
HEAT
SHIELD
2"
1"
If this unit is installed flush to the finishing material then
a minimum of 4.5" of Cement Board or non-combustible
equivalent must be used on the top only of the Front
Face.
22
M H 20
A E
18
N I
T G
16
L H
14
E T
12
0
2 4
MANTLE WIDTH
6 8 10 12