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

INNOVATIVE HEARTH PRODUCTS • SEE-THROUGH DIRECT-VENT GAS FIREPLACES (DRT63STTEN/P) • INSTALLATION INSTRUCTIONS

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 2
on Page 6).
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 12 for clearance requirements to
nailing flanges on each side of unit and any adjacent screw heads.
The appliance should be mounted on a fully supported base extending
the full width and depth of the unit. The appliance may be located on
or near conventional construction materials; however, if installed on
combustible materials, such as carpeting, vinyl tile, etc., a metal or wood
barrier covering the entire bottom surface must be used.
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 8).
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 33 and 34.
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 9). 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 under-
side of the mantel.
NOTE: Attic insulation shield (H3908, see Page 36) must be
installed when blown or loose-fill insulation is used, and is
required for all attic installations.

0 in (0 mm) Spacers

0 in (0 mm)
0 in (0 mm)
72.0 in (1829 mm)
1.0 in (25.4 mm)

Top: 4.0 in (102 mm)
Sides: 1.0 in (25.4 mm)
Bottom: 1.0 in (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
91.5" (2324 mm)
minimum
Indoor/Outdoor
90" (2287 mm)
Top of
minimum
Fireplace
Indoor/Outdoor
2 x 4
Figure 8: Min. Height of Combustible Enclosure
Mantel Depth
17 (432)
15 (381)
13 (330)
11 (279)
9 (229)
7 (178)
12
(305) (203)
10
Inches (254)
(millimeters)
Top of Appliance
Figure 9: 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
is "safe
zone"
14" 8.25"
(356 mm) (209 mm)
Figure 10: Side Wall Clearances
Min. 4"
(102 mm)
IMPORTANT!
Min. clearance to
combustibles above any
horizontal vent component
4"
is (102 mm).
Side View
8
4
(102)
6 2
(152) (51)
Top View of Fireplace
0.5"
Combustible materials
45°
are allowed in gray "safe
5 in
zone" illustrated here.
(127 mm)
Combustible walls are
shown in black.
Protected wall is shown
12 in
(305 mm)
in white.
Combustible material
17 in
may project beyond
(432 mm)
the side of the fireplace
opening if it is within
Protected wall
the gray "safe zone"
shown in white
illustrated here.
11