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108382-01D
9
9
For more information, visit www.desatech.com
For more information, visit www.desatech.com
Area of Various Standard Round Flues
Diameter (ins.) Area (sq. ins.)
5" 20 sq. inches
6" 29 sq. inches
7" 39 sq. inches
8" 51 sq. inches
INSTALLATION
Continued
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).
NOTICE: If your installation does not meet the mini-
mum clearances shown, you must do one of the
following:
• operate the logs only with the flue damper open
• raise the mantel to an acceptable height
• remove the mantel
Figure 7 - Minimum Mantel Clearances When Using Hood
Minimum Non-
Combustible
Material
8"
Min.
12" 15" 18"
All minimum
distances are
in inches
20"
2
1
/2
"
6"
8"
10"
12"
Distances to
Underside of
Mantel
Hood
(GA6050, GA6052)
Top of Fireplace
Opening
Underside of
Mantel Shelf
Mantel Shelf
Figure 8 - Minimum Fireplace
Clearances If Installed at Floor
Level
Figure 9 - Minimum Fireplace
Clearances Above Combus-
tible Flooring
14"
Min.
Combustible
Material
Noncombustible Material
Hearth
5"
Min.
Combustible
Material
Hood (GA6050,
GA6052 or GA6053)
NOTICE: Surface temperatures of adjacent walls and
mantels become hot during operation. Walls and
mantels above the firebox may become hot to the
touch. If installed properly, these temperatures meet
the requirement of the national product standard.
Follow all minimum clearances shown in this manual.
INSTALLING DAMPER CLAMP ACCESSORY
FOR VENTED OPERATION
Note:
When used as a vented heater, appliance must be installed
only in a solid-fuel burning fireplace with a working flue and
constructed of noncombustible material.
If your heater is a manually controlled model, you may use this
heater as a vented product. There are three reasons for operating
your heater in the vented mode:
1. The fireplace does not meet the clearance to combustibles re-
quirements 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 24). This will insure vented
operation (see Figure 10). The damper clamp will keep damper open.
Installation instructions 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.) Minimum Permanent Flue Opening
6' to 15' 39 sq. inches
15' to 30' 29 sq. inches
Figure 10 - Attaching Damper Clamp
Damper
Damper
Clamp
Damper
Clamp
Damper
Damper
Masonry Fireplace Manufactured Fireplace
INSTALLATION
Mantel Clearances (Cont.)
Floor Clearances
Installing Damper Clamp Accessory for Vented Operation
Determining Minimum Mantel Clearance When
using a Hood
If minimum clearances in Figure 6, page 8 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 when using hood.