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112471-01B
10
INSTALLATION
Continued
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".
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 12.
Minimum Noncombustible Material
Clearances
If Not Using Mantel
Note:
If using a mantel proceed to
If Using Mantel
.
If not using a mantel, follow the information on
this page.
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 behind it. Noncombustible material must
extend at least 8" up (for all models). If noncombus
-
tible material is less than 12", you must install the
fireplace hood accessory (24" and 30" Models Only).
See Figure 5 for minimum clearances.
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" thick.
With sheet metal, you must have noncombustible
material behind it. Noncombustible material must ex
-
tend 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
noncombustible material is more than 12", you may
need the hood accessory to deflect heat away from
your mantel shelf. See Figures 5 and 6 and Figure 7,
page 11, 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 12.
Heat Resistant
Material
(A)
Figure 5 - Heat Resistant Material (Slate,
Marble, Tile, etc.) Above Fireplace
Figure 6 - Minimum Mantel Clearances
Without Using Hood
Minimum
Noncombustible
Material
Minimum Non-
Combustible
Material Height
Distances to
Underside of
Mantel
Top of
Fireplace
Opening
Underside
of Mantel
Shelf
12"
8"
(A)
18"
14"
20"
17"
22"
19"
24"
20"
All minimum
distances are
in inches
Log Set
24"/30"
Models
18" Model
2
1/2
"
6"
8"
10"
Mantel Shelf
Noncombustible
Material Distance (A)
Requirements for
Safe Installation
12" or more
Noncombustible
material OK.
Between 8" and 12"
24" or 30" Models:
Install fireplace hood
accessory (GA6050,
GA6052, or GA6053
see
Accessories
,
page 31).
18" Model: Noncom-
bustible material OK.
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.
