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A. If installing appliance on the floor level,
you must maintain the minimum distance
of 14" to combustibles (see Figure 8).
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
INSTALLING DAMPER CLAMP ACCESSORY FOR VENTED
OPERATION (TCVFM18NL/TCVFM18NS ONLY)
When used as a vented heater, appliance
must be installed only in a solid-fuel burning
fireplace with a working flue constructed of
noncombustible material. You may use this
heater as a vented product. There are three
reasons for operating your heater as a vented
model:
1. The fireplace does not meet the clearance
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, you
must permanently open chimney flue damper.
You must install the damper clamp accessory
(not provided). This will insure vented opera-
tion (see Figure 10). The damper clamp will
keep damper open. Installation instructions
are included with clamp accessory.
See chart below for the minimum permanent
flue opening you must provide. Attach damper
clamp so the minimum permanent opening will
be maintained at all times.
200208-01A
INSTALLATION
FLOOR CLEARANCES
Combustible
Material
14"
Min.
Noncombustible Material
www.sureheat.com
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 9 - Minimum Fireplace Clearances
Above Combustible Flooring
Chimney
Minimum Permanent
Height
6' to 15'
15' to 30'
Area of Various Standard Round Flues
Diameter
5"
6"
7"
8"
Damper
Clamp
Damper
Figure 10 - Attaching Damper to Fireplace
Hearth
Combustible
Material
5"
Min.
Flue Opening
39 sq inches
29 sq inches
Area
20 sq inches
29 sq inches
39 sq inches
51 sq inches
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