www.desatech.com
105163-01C
Figure 5 - Minimum Clearance -
Front View
42" Min.
0" to Wood Floor
8" Min.
4"
Min.
0" Min. Clearance to
Upper Frame/Wallboard
Ceiling
Edge of
Brick Liner
4" Min. from the Perpendicular
Side Wall to the Edge of Facia
1/2" Min. Clearance
to Combustibles
43
3
/
4
"
24"
36" Min. from
Edge of Facial
to Facing Wall
on Open End
of Firebox
Figure 6 - Minimum Clearance - Top View
CAUTION: Use only the clear-
ances specified in this manual or
on the firebox rating plate.
Minimum clearances to combustibles are:
• Sides of outer casing
0" min.
• Drywall to sides and top of
0" min.
front face
• Ceiling to opening
42' min.
• Floor (see
Minimum Wall
0" min.
and Ceiling Clearances
, note C, page 8)
• Perpendicular walls
4' min.
Right and Left
• Distance to Facing Walls
36" min.
on Sides and End of Firebox
iNSTaLLaTiON
Continued
Mantel Clearances for Built-In
Installation
If placing custom mantel above built-in firebox,
you must meet the minimum allowable clearance
between mantel shelf and top of firebox opening
shown in Figure 7. These are the minimum allowable
mantel clearances for a safe installation. Use larger
clearances wherever possible to minimize the heating
of objects and materials placed on the mantel.
CAUTION: Do not allow the
vent-free gas log heater to touch
or extend beyond the firebox
screen.
If your installation does not meet the above mini-
mum clearances in Figure 7, you must:
• raise the mantel to an acceptable height,
OR
• remove the mantel.
Supplied
Firebox
Hoods Must
Be Used at
All Times
Wire-mesh
Screen
Firebox Top
Mantel Shelf
3"
6"
9
1
/
4
"
Combustible
Material 1
1
/
2
"
Max Thickness
Note:
All vertical
measurements are
minimum distances
from top of fireplace
hood to bottom of
mantel shelf. These
minimum clearances
replace any other
recommended
clearances supplied
with your ANS Z21.11.2
approved gas logs.
Wall board or facing material (above firebox)
may be of combustible material, including
decorative mantel ornaments or other similar
projections off of the facing material.
Top Frame
(Combustible Material)
12" 15" 18"
7" Min.
Note:
Fireplace shown as cross-section for clarity.
Mantel material may not be less than 7" from top of
hood. Do not cover louver openings.
BUILT-IN OR INTERNAL WALL
FIREBOx INSTALLATION
Built-in installation of this firebox involves installing
firebox into a framed-in enclosure. This makes the
front of firebox flush with wall. If installing a mantel
above the firebox, you must follow the clearances
shown in Figure 7. Follow the instructions below to
install the firebox in this manner.
1. Frame in rough opening. The firebox framing
should be constructed of 2 x 4 lumber or heavier.
Construct framing using dimensions shown in
Figure 8 and 9, page 10. It is recommended that
the framing be constructed first and the unit be
placed in position. After sliding the unit into place,
the flanges may be nailed to the framing before
applying the wallboard to the exterior framing.
2. If the vent-free firebox is to be installed directly
on carpeting, tile (other than ceramic) or any
combustible material other than wood flooring;
the vent-free firebox must be installed upon a
metal or wood panel extending the full width
and depth of the vent-free firebox.
Figure 7 - Minimum Mantel Clearances
for Built-In Installation