D. Finishing Material
Refer to Section 11 for combustible/non-combustible ma-
terials. Refer to Figure 11.9 for non-combustible zone.
WARNING! Risk of Fire! You must maintain clearances.
•
Use only non-combustible framing material below
standoffs.
•
Sheetrock, wood or other combustibles must NOT be
used as sheathing or facing in the non-combustible
zone.
•
DO NOT cover metal fireplace front with combustible
materials.
•
Install combustible materials only to specified clearances
on top front and side edges.
WARNING! Risk of Fire!
•
DO NOT obstruct air inlets or outlets.
•
DO NOT modify grilles. Modifying or covering grilles
could cause temperature rise and fire hazard.
•
Finishing materials must not interfere with: air flow
through grilles or louvers; operation of louvers or doors;
access for service.
•
Complete framing and apply facing material (drywall)
over framing.
•
A bead of 300-deg F minimum non-combustible sealant
must be used to close off any gaps at the top and sides
between the fireplace and facing to prevent cold air
leaks.
•
Large gaps can be bridged with fiberglass rope
gasket.
•
Only non-combustible materials may be used to cover
the metal fireplace front.
Finished combustible wall
Combustible material
Non-combustible
decorative facing
(up to full brick depth)
Continuous,
non-combustible sealant
Tile, stone or other
non-combustible material
HX3 or HX4
Hearth Ext
or equivilent
insulation
Figure 11.10 Decorative Facing
38
Hearth
Refractory
Metal strips are placed 2 in. (51 mm)
under the front of the fireplace and must
extend beyond the front and sides of
fireplace opening by 2 in. (51 mm)
Heatilator • A36C & A42C • 28396 • Rev AQ • 10/12
These surfaces
may be covered
with non-combustible
material.
Figure 11.9 Non-combustible Facing
Flat 2 x 4 stud wall
2 x 4 header, flush with
front of stand-offs
Floor constructed of wood or
other combustible material
High temperature
sealant.