Mantel Clearances - Desa 24", 30" Owner's Operation And Installation Manual

Unvented (vent-free) gas log heater
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INSTALLATION
Continued
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. Noncombus-
tible 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). Even if noncombus-
tible material is more than 12", you may need the
hood accessory to deflect heat away from your
mantel shelf. See Figure 5 and 6 and Figure 7 on
page 11 for minimum clearances.
Noncombustible Requirements for
Material
Distance (A)
12" or more
Between 8"
and 12"
Less than 8"
Heat Resistant
Material
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
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.
10
Safe Installation
Noncombustible material
okay.
24", 30" or 36" Models:
Install fireplace hood
accessory (GA6050,
GA6052 or GA6053 see
Accessories, page 38).
18" Model: Noncombus-
tible material okay.
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.
(A)
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MANTEL CLEARANCES

In addition to meeting noncombustible material
clearances, you must also meet required clearances
between fireplace opening and mantel shelf. If
you do not meet the clearances in Figure 6 you
will need a hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between mantel
shelf and top of fireplace opening, a hood is not
required (see Figure 6).
Determining Minimum Mantel Clearance
When Using a Hood
If minimum clearances in Figure 6 are not met, you
must have a hood. When using a hood there are
still certain minimum mantel clearances required.
Follow minimum clearances shown in Figure 7,
page 11 when using hood.
NOTICE: Surface temperatures
of adjacent walls and mantels be-
come hot during operation. Walls
and mantels above the firebox
may become hot to the touch.
If installed properly, these tem-
peratures meet the requirement
of the national product standard.
Follow all minimum clearances
shown in this manual.
10"
8"
6"
2
1 /2
"
Minimum
(A)
Noncombustible
Material
12"
8"
Minimum
Noncombustible
Material Height
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Mantel Shelf
Underside
of Mantel
Shelf
All minimum
distances
are in inches
Log Set
24"/30"
18"
20"
22"
24"
Models
8"
14"
17"
20"
18" Model
Top of Fireplace
Opening
Distances to
Underside of
Mantel
113097-01C

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