Desa HDVF3018N Owner's Operation And Installation Manual page 9

INSTALLATION
Continued
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
Log Size
18"
LOG SIzING REQUIREMENTS
Minimum Firebox
Log
Size Height Depth
18" 17"
* Measured at 14" depth.
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
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 / " from the wall. This combus-
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tible 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 open-
ing to the ceiling should not be less than 42".
119421-01A
Side Wall Ceiling
16" 42"
Front Rear *
Width Width
14" 24"
www.desatech.com
*Minimum 16" from Side Wall
Figure 4 - Minimum Clearance for
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
20"
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 non-
combustible material behind it. Noncombustible
material must extend at least 8" up (for all mod-
els). If noncombustible material is less than 12",
you must install the fireplace hood accessory (24"
and 30" models only). See Figure 5, page 10 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 11.
Example
Combustible to Wall
*
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