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105604-01J 9
IMPORTANT: Vent-free gas log heaters add
moisture to the air. Although this is beneficial,
installing firebox in rooms without enough
ventilation air may cause mildew to form from
too much moisture. See Air for Combustion and
Ventilation, page 6.
IMPORTANT: Make sure the firebox is level.
If firebox is not level, log set will not work
properly.
Note: Your Vanguard firebox is designed to be
used in zero clearance installations. Wall or fram
-
ing material can be placed directly against any
exterior surface on the rear, sides or top of your
firebox, except where standoff spacers are inte
-
grally attached. If standoff spacers are attached to
your firebox, these spacers can be placed directly
against wall or framing materials.
Use the dimensions shown for rough openings to
create the easiest installation (see Built-In Firebox
Installation, page 14).
INSTALLATION CLEARANCES
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling and adjoining wall.
Carefully follow the instructions below. This will
ensure safe installation.
Minimum Clearances For Side Combustible
Material, Side Wall and Ceiling
A. Clearances from the side of the fireplace
cabinet to any combustible material and wall
should follow diagram in Figure 6.
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3
1
/
2
" from the wall. This combus-
tible material must be 4" from the side of the
fireplace opening (see Figure 6).
B.
Clearances from the top of the fireplace opening
to the ceiling should not be less than 42 inches.
INSTALLATION
Continued
MINIMUM CLEARANCE TO
COMBUSTIBLE MATERIALS
Top Left and Bottom
Right Sides and Rear
42" 16" 0"
Figure 6 - Minimum Clearance for
Combustible to Wall
*Minimum 16 inches from Side Wall
Example
*
Mantel Clearances for Built-In
Installation
If placing custom mantel above built-in firebox,
you must meet the minimum allowable clearance
between mantel shelf and top of firebox opening
shown in Figure 8. These are the minimum allowable
mantel clearances for a safe installation. Use larger
clearances wherever possible to minimize the heating
of objects and materials placed on the mantel.
CAUTION: Close screens
before operation of vent-free
gas log heater. Do not allow the
heater to touch or extend beyond
the fireplace screen.
If your installation does not meet the minimum
clearances in Figure 8, you must:
• raise the mantel to an acceptable height,
OR • remove the mantel.
Figure 7 - Minimum Mantel Clearances
for Built-In Installation
For
FB32NCA
and
NLFB32NC
Series
noncirculating,
smooth face
models
For
FB32CA
and
NLFB32C
Series
circulating,
louvered
models only
Supplied
Fire
box Hood
Must Be Used
at All Times
Wire-mesh
Screen
Fire
box
Mantel Shelf
13"
16"
19"
21"
19" 20" 21" 22"
For FB32NCA and NLFB32NC
Series noncirculating
smooth face models
2
1
/2
"
6"
8"
10"
For FB32CA and NLFB32C
Series circulating louvered
models only
Note:
All vertical measurements
are from top of fireplace
opening to bottom of mantel
shelf. All measurements
are in inches.
Fa
cing material (above
f
irebox) may be of
combustible material,
including decorative
mantel ornaments.
Facing material
(above firebox)
may be of
combustible
material, including
decorative mantel
ornaments.
Note: All vertical measurements
are from top of fireplace opening
to bottom of mantel shelf. All
measurements are in inches.