www.desatech.com
119421-01E
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"
LOG SIZING REQUIREMENTS
Minimum Firebox
Height
Depth
Front
Width
Rear
Width*
17"
14"
24"
20"
* Measured at 14" depth.
Carefully follow the instructions below. This
will ensure safe installation into a masonry,
UL127-listed manufactured fireplace or certi
-
fied 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 com
-
bustible material must be 4" from the side
of the fireplace opening (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".
INSTALLATION
Continued
Figure 4 - Minimum Clearance for
Combustible to Wall
*Minimum 16" from Side Wall
Example
*
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 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 be-
hind it. Noncombustible material must extend
at least 8" up. If noncombustible material is
less than 12", you must install the fireplace
hood accessory. See Figure 5, page 10 for
minimum clearances.
IMPORTANT:
If you cannot meet these mini-
mum clearances, you must operate heater
with chimney flue damper open. Go to
Install-
ing Damper Clamp Accessory for Vented
Operation,
page 11.
