Minimum Clearances To Combustibles - Superior DRT63STTEN Installation And Operation Instructions Manual

Innovative Hearth Products
DRT63ST Direct-Vent Gas Fireplaces

MINIMUM CLEARANCES TO COMbUSTIbLES

Appliance and Vent Clearances
The appliance is approved with zero clearance to combustible materials
on both sides (as detailed in Table 5), with the following exceptions:
• When the unit is installed with one side flush with a wall, the wall on the
other side of the unit must not extend beyond the front edge of the unit.
• In addition, when the unit is recessed, the side walls surrounding the
unit must not extend beyond the front edge of the unit (see Figure 10).
MINIMUM CLEARANCES TO COMbUSTIbLES
back / Sides
Top Spacers
Floor
Unit bottom to Ceiling
Vertical Vent Pipe
Horizontal Vent Pipe
SERVICE CLEARANCES
Front
Table 5

4" (102 mm) above any horizontal/inclined vent component.
 See Step 1 ("FRAMING") on Page 15 for clearance requirements to
nailing flanges on each side of unit and any adjacent screw heads.
Min. Height of Combustible Enclosure
To provide for the lowest possible combustible enclosure (or shelf)
surface, the venting should be routed in a way to minimize obstructions
to the space above the appliance. Do not insulate the space between the
appliance and the area above it (see Figure 9).
Wall Finishes / Surrounds / Mantels
NOTE: Combustible wall finish materials and/or surround materials must
not be allowed to encroach the area defined by the appliance front faces
(black sheet metal). Never allow combustible materials to be positioned
in front of or overlapping the appliance face. See Pages 32 and 33.
Non-combustible materials, such as surrounds and other appliance trim,
may be installed on the appliance front face with these exceptions: they
must not cover any portion of the removable glass panel.
Vertical installation clearances to combustible mantels vary according
to the depth of the mantel (see Figure 10). Mantels constructed of
non-combustible materials may be installed at any height above the
appliance opening.
NOTE: Use high-temperature paint (rated 175°F or higher) on the un-
derside of the mantel.
Minimum clearance requirements include any projections such as
shelves,window sills, mantels, etc. above the appliance.
NOTE: Attic insulation shield (H3908, see Page 35) must be in-
stalled when blown or loose-fill insulation is used, and is required
for all attic installations.
14

0" (0 mm) Spacers

0" (0 mm)
0" (0 mm)
72" (1829 mm)
1" (25.4 mm)

Top: 4" (102 mm)
Sides: 1" (25.4 mm)
Bottom: 1" (25.4 mm)
3 ft (0.9 m)
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Do NOT insulate space between
appliance and area above it.
Combustible
Enclosure/Shelf
Min. 2 ft vertical
vent section
and one 90-degree
elbow required
91-1/2" (2324 mm)
minimum
Indoor/Outdoor
90" (2287 mm)
Top of
minimum
Fireplace
Indoor/Outdoor
2 x 4
Figure 9 - Min. Height of Combustible Enclosure
Mantel Depth
17 (432)
15 (381)
13 (330)
11 (279)
9 (229)
7 (178)
12 8
(305)
(203)
10
Inches (254)
(millimeters)
Top of Appliance
Figure 10 - Mantel Clearances
Minimum Distance to Unprotected Side Wall
At 14" minimum At 8-1/4" side
side wall clearance, wall clearance,
a combustible a combustible
wall can project wall can project
to any length. 12" maximum.
(13 mm)
Gray area
45°
is "safe
zone"
14" 8-1/4"
(356 mm) (209 mm)
Figure 11 - Side Wall Clearances
General Information
900355-01, 07/2015
Min. 4"
(102 mm)
IMPORTANT!
Min. clearance to
combustibles above any
horizontal vent component
4"
is (102 mm).
Side View
4
(102)
6 2
(152) (51)
Top View of Fireplace
1/2"
Combustible materials
are allowed in gray "safe
5"
zone" illustrated here.
(127 mm)
Combustible walls are
shown in black.
Protected wall is shown
12"
in white.
(305 mm)
Combustible material
may project beyond
17"
the side of the fireplace
(432 mm)
opening if it is within
the gray "safe zone"
Protected wall
illustrated here.
shown in white