Combustible Mantel; Sidewalls/Surrounds - Heat & Glo HST-48D Owner's Manual

E. Combustible Mantel
• Refer to shaded areas of Figure 11.4
for locations and dimensions of a

combustible mantel.

• A combustible mantel may be
positioned no lower than 12 in. (305
mm) above the top of the fireplace
opening.
• A combustible mantel may have a
maximum depth of 12 in. (305 mm).
• Combustible trim and materials cannot
be placed within 6 in. (152mm) of the
fireplace opening (top or sides).
• Combustible materials projecting
more than 1 1/2 in. (38 mm) shall not
be placed within 12 in. (305 mm) from
the top of the fireplace opening.
• Combustible trim must not cover the
metal surfaces of the fireplace.
• Mantel clearance is in accordance with
Section 7-3.3.3 of ANSI/NFPA211.
F. Sidewalls/Surrounds
• Adjacent combustible sidewalls must be located a minimum of 12 in. (305 mm) from the fireplace opening.
• Combustible or non-combustible mantel legs, surrounds and stub walls may be constructed per Figure 11.5.
Figure 11.5 Mantel Leg or Wall Projections (acceptable on both sides of opening)
40
Figure 11.4 Clearances to Mantels or other Combustibles above Fireplace
Gridlines at 1 in. scale
FLUSH
FRONT
11 3/8 in.
[289 mm]
12 in.
[305 mm]
Heat & Glo • HST-48D US-CAN • 4012-040 • Rev L • 7/12
Combustible Wall
2 x 4 stud wall
Standoffs
Non-combustible
Decorative Facing
such as: Steel, iron,
brick, tile, concrete,
slate, tile, plasters
Seal joint with
non-combustible
sealant
42 in.
[1067 mm]
fireplace opening
47 in.
[1194 mm]
width of fireplace
[305 mm]
Combustible
Decorative Facing
12 in./305 mm
Mantel
12 in./305 mm
minimum
6 in./152 mm
1 1/ 2 in.
38 mm minimum
maximum
Measured from top of fireplace opening
4 in.
BRICK
[102 mm]
FRONT
9 3/4 in.
[248 mm]
12 in.
7 ft (2134 mm)
minimum
base of fireplace
to ceiling