Desa CLD3018PTA - Manual (Page 9)

www.desatech.com 113101-01A 9
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 cabi-
net to any combustible material and wall
should follow diagram in Figure 8.
Example:
The face of a mantel, bookshelf,
etc. is made of combustible material and pro-
trudes 3
1 /
2
" from the wall. This combustible
material must be 4" from the side of the fire-
place 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 inches.
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
*
Example
INSTALLATION
Continued
Minimum Noncombustible Material
Clearances
If Not Using Mantel
Note: If using a mantel, proceed to If Using Man-
tel, page 10. If not using a mantel, follow the in-
formation 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 noncombus-
tible material behind it. Noncombustible material
must extend at least 8" up (for all models). If non-
combustible material is less than 12", you must in-
stall the fireplace hood accessory (24" model only).
See Figure 5 for minimum clearances.
IMPORTANT:
If you cannot meet these minimum
clearances, you must operate heater with chim-
ney flue damper open. Go to Installing Damper
Clamp Accessory for Vented Operation, page 12.
NOTICE: Manual control heaters
may be used as a vented prod-
uct. If so, you must always run
heater with chimney flue damper
open. If running heater with
damper open, noncombustible
material above fireplace open-
ing is not needed. Go to Install-
ing Damper Clamp Accessory for
Vented Operation
, page 12.
Noncombustible
Material
Requirements for
Distance (A) Safe Installation
12" or more Noncombustible
material okay.
Between 8" 24" Model: Install
and 12" fireplace hood
accessory (GA6050,
GA6052, or GA6053,
see Accessories,
page 30).
18" Model: Noncom-
bustible material okay.
Less than 8" Noncombustible
material must be
extended to at least
8". See Between 8"
and 12", above. If you
cannot extend mate-
rial, you must oper-
ate heater with flue
damper open.
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace