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10
INSTALLATION
Continued
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
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 non-
combustible material behind it. Noncombustible
material must extend at least 8 inches 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 noncombustible
material is more than 12", you may need the hood
accessory to deflect heat away from your mantel
shelf. See Figure 5 and Figures 6 and 7 on page 9
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 11.
Noncombustible Requirements for
Material Safe Installation
Distance (A)
12" or more Noncombustible material
okay.
Between 8" Install fireplace hood
and 12" accessory (GA6050,
GA6052, or GA6053 see
Accessories,
page 34).
Less than 8" 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.
Heat Resistant
Material
(A)
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 listed below, you will
need a hood.
Determining Minimum Mantel Clearances
If you meet minimum clearance between mantel
shelf and top of fireplace opening, a hood is not
required (see Figure 6).
Determining Minimum Mantel Clearances
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 re-
quired. Follow minimum clearances shown in Fig-
ure 7, page 11, when using hood.
NOTICE: Surface temperatures
of adjacent walls and mantels
become hot during operation.
Walls and mantels above the fire-
box may become hot to the touch.
If installed properly, these tem-
peratures meet the requirements
of the national product standard.
Follow all minimum clearances
shown in this manual.
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Minimum
Noncombustible
Material
Minimum
Noncombustible
Material Height
Distances to
Underside of
Mantel
Top of Fireplace
Opening
Underside
of Mantel
Shelf
Mantel Shelf
12"
8"
(A)
18"
8"
20"
14"
22"
17"
24"
20"
All minimum
distances
are in inches
Log Set
24"/30"
Models
18" Model
2
1
/2
"
6"
8"
10"