Heat & Glo Fireplace Heat-N-Glow Woodburning Fireplace BW36 - Manual (Page 11)

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Figure 7
Sidewalls/Surrounds
A combustible mantel may be positioned no lower
than 12” above the top of the firebox opening. The
combustible mantel may have a maximum depth of
12”. Combustible trim materials, projecting no more
than 1 1/2” from the face of the fireplace, can be
placed no closer than 6” from the top and side of the firebox opening. (See the shaded areas on each
side of the firebox, as defined in Figure 7).
Combustible trim must not cover the black metal sur-
faces of the fireplace. This mantel clearance is in
accordance with Section 7-3.3.3 of ANSI/NFPA 211.
E. CHIMNEY REQUIREMENTS
When planning your fireplace location, the chimney construction and necessary clearances must be considered.
The fireplace system and chimney components have been tested to provide the following flexibility in construc-
tion. The following figures are the minimum distances from the base of the unit.
Minimum overall straight height 14.5 ft.
Minimum height with Offset/Return 14.5 ft.
Maximum height 90 ft.
Maximum chimney length between an Offset/Return 12 ft.
Maximum distance between Chimney Stabilizers 35 ft.
Double Offset/Return minimum height 20 ft.
Maximum unsupported chimney length between Offset/Return 6 ft.
Maximum straight unsupported chimney height above firebox 25 ft.
4. SIDEWALLS/SURROUNDS.
5. MANTEL.
BW36 SERIES WOODBURNING FIREPLACE
CAT. # A B
BW36 36" 38
5
/
8
"
BW36C 36" 38
5
/
8
"
9 3 /
4
"
14 3 /
8
"
50°
12"
39°
4"
BRICK
FRONT
FLUSH FRONT
12"
A
B
12"
12"
MIN.
TOP OF
FIREPLACE
OPENING
33 5 /
8
"
No one builds a better fire
1. USING OFFSETS AND RETURNS.
To bypass any overhead obstructions, the chimney
may be offset using a 15° offset/return (SL315) or a
30° offset/return (SL330). Perform the following steps
to determine the correct chimney component combi-
nation for your particular installation.
An offset and return may be attached together or a
chimney section(s) may be used between an offset
and return. However, the distance between two
elbows must never exceed 12 feet in total
length.
a. Measure how far the chimney needs to be
shifted to enable it to avoid the overhead
obstacle. See Figure 8, dimension “A”.
b. After determining the offset dimension, refer
to Table 1 (page 13) and find the “A” dimen-
sion closest to but not less than the dis-
tance of shift needed for your installation.
Adjacent combustible side walls must be located a minimum of 12" from the fireplace opening. See Figure 7. If
you are using a decorative surround constructed of combustible material, it may be located within the shaded
area defined in Figure 7. Short stub walls are also acceptable if they are contained within the shaded area.