Desa PROPANE GAS LOG HEATER - Manual (Page 10)

10
102318
Heat Resistant
Material
(A)
INSTALLING
Continued
NOTICE
You may use this heater as a vented product. If
so, you must always run heater with chimney flue
damper open. If running heater with damper open,
non-combustible material above fireplace open-
ing is not needed. Go to
Installing Damper Clamp
Accessory for Vented Operation, page 13.
Minimum Non Combustible Material Clearances
If Not Using Mantel
Note:
If using a mantel, go to page 11. If not using a mantel, follow the information
on this page.
You must have non combustible material(s) above the fireplace opening. Non
combustible materials (such as slate, marble, tile, etc.) must be at least 1/2 inch
thick. With sheet metal, you must have non combustible material behind it. Non
combustible material must extend at least 8" up. If non combustible material is less
than 12", you must install the fireplace hood accessory. See chart below and 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 13.
Non-Combustible Requirements for
Material Distance (A) Safe Installation
12" or more Non combustible material OK.
Between 8" and 12" Istall fireplace hood acessory (GA6050
or GA6052, see
Accessories, page 31).
Less than 8" Non combustible 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