Desa CHL3924PR Owner's Operation And Installation Manual page 11

Unvented (vent-free) gas log heater
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INSTALLATION
Continued
NOTICE: If your installation does
not meet the minimum clear-
ances shown, you must do one
of the following:
• operate the logs only with the
flue damper open
• raise the mantel to an accept-
able height
• remove the mantel.
12"
10"
8"
6"
2
"
1 /2
Minimum
Noncombustible
Material
Hood
(GA6050,
GA6052)
Figure 7 - Minimum Mantel Clearances
When Using Hood
FLOOR CLEARANCES
A. If installing appliance on the floor level, you
must maintain the minimum distance of 14"
to combustibles (see Figure 8).
B. If combustible materials are less than 14" to
the fireplace, you must install appliance at
least 5" above the combustible flooring (see
Figure 9).
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
111161-01E
Mantel Shelf
All minimum
distances are
in inches
8"
12"
15"
18"
20"
Min.
Distances to
Underside of
Mantel
Combustible
Material
14"
Min.
Noncombustible Material
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Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
Note: When used as a vented heater, appliance
Underside
of Mantel
must be installed only in a solid-fuel burning
Shelf
fireplace with a working flue and constructed of
noncombustible material.
If you choose to use your heater as a manually-
controlled model (no remote control installed),
Log Set
you may use this heater as a vented product. There
18", 24",
All
30" Models
Models
are three reasons for operating your heater in the
vented mode.
Top of
1. The fireplace does not meet the clearance
Fireplace
Opening
to combustibles requirements for vent-free
operation.
2. State or local codes do not permit vent-free
operation.
3. You prefer vented operation.
If reasons number 1 or 2 above apply to you, you
must permanently open chimney flue damper. You
must install the damper clamp accessory (to order,
see Accessories, page 34). This will insure vented
operation (see Figure 10, page 12). The damper
clamp will keep damper open. Installation instruc-
tions are included with clamp accessory.
See chart below for minimum permanent flue
opening you must provide. Attach damper clamp
so the minimum permanent flue opening will be
maintained at all times.
Chimney
Height (ft.)
6' to 15'
15' to 30'
Area of Various Standard Round Flues
Diameter (inches)
Hearth
5"
Min.
Minimum Permanent
Flue Opening (sq. in.)
39 sq. inches
29 sq. inches
Area (sq. inches)
5
6
7
8
Combustible
Material
20
29
39
51
11

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