www.desatech.com
119347-01A
9
INSTALLATION AND CLEARANCES
(Vent-Free Operation Only)
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling and adjoining wall.
Minimum Fireplace Clearance to Combustible
Materials:
Side Wall 16", Ceiling 42"
Minimum Firebox Size:
Height 17", Depth 14",
Front Width 24", Rear Width 20" (measured at
14" depth).
Carefully follow the instructions below. This will
ensure safe installation into a masonry, UL127-
listed manufactured fireplace or certified vent-free
firebox.
Minimum Clearances For Side
Combustible Material, Side Wall and
Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 4.
Example:
The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3
1
/
2
" from the wall. This combus-
tible material must be 4" from the side of the
fireplace cabinet (see Figure 4).
Note:
When installing your gas logs into
a manufactured firebox, follow firebox
manufacturer’s instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the fireplace
opening to the ceiling should not be less
than 42".
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
*
Example
INStALLAtION
Continued
NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney flue damper open. If
running heater with damper open,
noncombustible material above fire-
place opening is not needed. Go to
Installing Damper Clamp Accessory
for Vented Operation
, page 11.
Minimum Noncombustible Material
Clearances
If Not Using Mantel
Note:
If using a mantel, proceed to
If Using
Mantel
, page 10. If not using a mantel, follow the
information below.
You must have noncombustible material(s) above the
fireplace opening. Noncombustible materials (such
as slate, marble, tile, etc.) must be at least 1/2" thick.
With sheet metal, you must have noncombustible
material behind it. Noncombustible material must
extend at least 8" up. See Figure 5 for minimum
clearances.
IMPORTANT:
If you cannot meet these minimum
clearances, you must operate heater with chimney
flue damper open. Go to
Installing Damper Clamp
Accessory for Vented Operation
, page 11.
Noncombustible
Material
Requirements for
Distance (A)
Safe Installation
1" or more
Noncombustible material okay.
Between 8" and 1" Noncombustible material okay.
Less than 8"
Noncombustible material must
be extended to at least 8".
See
Between 8" and 12"
,
above. If you cannot extend
material, you must operate
heater with flue damper open.
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
f i r e - p a r t s . c o m