www.desatech.com
104415-01M
10
Carefully follow the instructions below. This will
ensure safe installation into a masonry, UL127-
listed manufactured fireplace, or listed 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
manufacturerʼs instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the fireplace open-
ing to the ceiling should not be less than 4".
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
Heat Resistant
Material
(A)
Minimum Noncombustible Material
Clearances
If Not Using Mantel
Note:
If using a mantel proceed to
If Using Mantel,
page 11. If not using a mantel, follow the informa-
tion on this page.
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 non-
combustible material behind it. Noncombustible
material must extend at least 8" up (for all models).
If noncombustible material is less than 12", you
must install the fireplace hood accessory (24" and
30" Models Only). See Figure 5 for minimum
clearances.
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 fireplace opening is not
needed. Go to
Installing Damper
Clamp Accessory for Vented
Operation
, page 12.
Noncombustible Requirements for
Material
Safe Installation
Distance (A)
12" or more
Noncombustible material
okay.
Between 8"
24" or 30" Models:
and 12"
Install fireplace hood
accessory (GA6050,
GA6052 or GA6053 see
Accessories
, page 42).
18" Model: Noncombus-
tible 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.
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
