Desa VGL18NRA - Manual (Page 9)

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CAUTION: This heater cre-
ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as, but
not limited to, tobacco smoke,
aromatic candles, cleaning flu-
ids, oil or kerosene lamps, etc.) in
the air exist, may discolor walls
or cause odors.
IMPORTANT: Vent-free heaters add moisture
to the air. Although this is beneficial, installing
heater in rooms without enough ventilation air may
cause mildew to form from too much moisture.
See Air for Combustion and Ventilation, pages
6 through 8.
CHECK GAS TYPE
Use the correct gas type (natural or propane/LP)
for your unit. If your gas supply is not correct, do
not install heater. Call dealer where you bought
heater for proper type heater.
WARNING: This appliance
is equipped for (natural or pro-
pane/LP) gas. Field conversion
is not permitted.
INSTALLATION AND CLEARANCES
(Vent-Free Operation Only)
WARNING: Maintain the
minimum clearances. If you
can, provide greater clearances
from floor, ceiling and adjoining
wall.
INSTALLATION
Continued
Carefully follow the instructions below. This will
ensure safe installation into a masonry, UL127-listed
manufactured fireplace or listed vent-free firebox.
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 4.
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 4).
Note: When installing your gas logs into
a manufactured firebox, follow firebox
manufacturerʼs instructions for minimum
clearances to combustible materials.
B. Clearances from the top of the fireplace opening
to the ceiling should not be less than 42 inches.
LOG SIZING REQUIREMENTS
Minimum Firebox Size
Log Front Rear
Size Height Depth Width Width*
18",24", 17" 13" 28" 21"
30"
Minimum Firebox Size With Blower
18",24", 17"
14" 34" 22 3 /
8
"
30"
MINIMUM FIREPLACE
CLEARANCE TO
COMBUSTIBLE MATERIALS
Log Size Side Wall Ceiling
18", 24", 30" 16" 42"
*Measured at 13" depth
Figure 4 - Minimum Clearance for Side
Combustible Material, Side Wall and
Ceiling
*Minimum 16 inches from Side Wall
*
Example
NOTICE: Manual control heaters
may be used as a vented product.
If so, you must always run heater
with chimney flue damper open. If
running heater with damper open,
noncombustible material above fire-
place opening is not needed. Go to
Installing Damper Clamp Accessory
for Vented Operation, page 12.