107123-01F
For more information, visit www.desatech.com
For more information, visit www.desatech.com
8
Heat Resistant
Material
(A)
Minimum Noncombustible Material Clearances
If Not Using Mantel
Note:
If using a mantel, proceed to If Using Mantel. 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 inch thick. With sheet metal, you must have
noncombustible 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 6 for minimum clearances.
IMPORTANT:
If you cannot meet these minimum clearances, you
must operate heater with chimney flue damper open. Go to Install-
ing Damper Clamp Accessory for Vented Operation, page 10.
Noncombustible
Requirements for
Material Distance (A)
Safe Installation
12" or more
Noncombustible material okay.
Between 8" and 12"
24" or 30" Models: Install
fireplace hood accessory
(GA6050, GA6052, or GA6053
see
Accessories, page 36).
18" Model: 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.
Figure 6 - Heat Resistant Material (Slate, Marble, Tile, etc.)
Above Fireplace
INSTALLATION
Continued
INSTALLATION
Installation And Clearances (Vent-Free Operation Only) (Cont.)
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 10.
Figure 5 - Minimum Clearance for Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
Minimum Clearances For Side Combustible
Material, Side Wall, and Ceiling
A. Clearances from the side of the fireplace cabinet to any com-
bustible material and wall should follow diagram in Figure 5.
Example:
The face of a mantel, bookshelf, etc. is made of
combustible material and protrudes 3
1
/
2
" from the wall. This
combustible material must be 4" from the side of the fireplace
opening (see Figure 5).
Note:
When installing your gas logs into a manufactured fire-
box, 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 inches.
If Using Mantel
You must have noncombustible material(s) above the fireplace
opening. Noncombustible materials (such as slate, marble, tile, etc.)
must be at least 1/2 inch thick. With sheet metal, you must have
noncombustible material behind it. Noncombustible material must
extend at least 8 inches up (for all models). If noncombustible
material is less than 12", you must install the fireplace hood
accessory (24" and 30" models only). Even if noncombustible
material is more than 12", you may need the hood accessory to
deflect heat away from your mantel shelf. See Figure 6 and Figures
7 and 8 on page 9 for minimum clearances.
IMPORTANT:
If you cannot meet these minimum clearances, you
must operate heater with chimney flue damper open. Go to Install-
ing Damper Clamp Accessory for Vented Operation, page 10.
