Desa VF-24N-BTB - Manual (Page 11)

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INSTALLATION
Continued
Figure 8 - Minimum Fireplace Clearances
If Installed at Floor Level
Figure 9 - Minimum Fireplace Clearances
Above Combustible Flooring
14"
Min.
Combustible
Material
Noncombustible
Material
Hearth
5"
Min.
Combustible
Material
MANTEL CLEARANCES
In addition to meeting noncombustible material
clearances, you must also meet required clearances
between fireplace openings and mantel shelf on
each side of the fireplace. If you do not meet the
clearances listed below, you will need a hood.
Determining Minimum Mantel Clearance
If you meet minimum clearance between mantel
shelf and top of fireplace opening, a hood is not
required (see Figure 6, page 10).
Determining Minimum Mantel Clearance
When using a Hood
If minimum clearances in Figure 6, page 10 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, page 10 when using hood.
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).
INSTALLING DAMPER CLAMP
ACCESSORY FOR vENTED
OPERATION
Note: When used as a vented decorative appliance,
unit must be installed only in a solid fuel burning
fireplace with a working flue and constructed of
noncombustible material.
If your heater is a non-thermostatically-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 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 apply to you, you must
permanently open chimney flue damper. You must
install the damper clamp as accessory (to order
(see Accessories, page 25). 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 in Figure 10, page 12, for minimum
permanent flue opening will be maintained at
all times.