Desa LDL3930NRB Owner's Operating & Installation Manual page 11

INSTALLATION
Continued
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.
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
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
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
121486-01F
Combustible
Material
14"
Min.
Noncombustible Material
Hearth
Combustible
Material
5"
Min.
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INSTALLING DAMPER CLAMP
ACCESSORY FOR VENTED
OPERATION
Note: When used as a vented heater, ap-
pliance must be installed only in a solid-fuel
burning fireplace with a working flue and
constructed of noncombustible material.
For Massachusetts Residents Only: Installation
of this vented gas log set in the Commonwealth of
Massachusetts requires damper be permanently
removed or welded in fully open position.
You may use this heater as a vented product.
There are three reasons for operating your
heater in the vented mode.
1. Fireplace does not meet clearance 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 1 or 2 above apply to you, you must
permanently open chimney flue damper. You
must install damper clamp accessory (to order,
see Accessories, page 29). This will insure
vented operation (see Figure 10). 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 minimum permanent flue opening
will be maintained at all times.
AREA OF VARIOUS STANDARD
ROUND FLUES
Diameter
5"
6"
7"
8"
Chimney Minimum Permanent
Height
6' to 15'
15' to 30'
Damper
Clamp
Damper
Clamp
Damper
Masonry Fireplace
Figure 10 - Attaching Damper Clamp
Area
20 sq. inches
29 sq. inches
39 sq. inches
51 sq. inches
Flue Opening
39 sq. inches
29 sq. inches
Damper
Damper
Manufactured
Fireplace
11