Desa VUL18NR Owner's Operation And Installation Manual page 10

CHECK GAS TYPE
Use the correct type of gas (natural or propane/
LP). If your gas supply is not the correct gas
type, do not install heater. Call dealer where
you bought heater for proper type heater.
WARNING: This appliance is
equipped for either natural gas
or propane/LP gas but not both.
Gas type is indicated on the rat-
ing plate. Field conversion is not
permitted.
INSTALLATION AND CLEARANCES
FOR VENT-FREE OPERATION
WARNING: Maintain the
minimum clearances. If you
can, provide greater clearances
from floor, ceiling and adjoining
wall.
Minimum Fireplace Clearance to
Combustible Materials
Side Wall 16", Ceiling 42", Floor 5",
Front 36"
LOG SIZING REQUIREMENTS
Minimum Firebox Size
Log
Height Depth
Size
18" 17"
24" 17"
30" 21"
36" 21"
*Measured at 14" depth
Carefully follow these instructions. 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.
10
INSTALLATION
Front Rear
Width Width*
14" 20" 14"
14" 26" 18"
14" 32" 22"
14" 38" 27
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Continued
Example: The face of a mantel, bookshelf,
etc. is made of combustible material and
protrudes 3
bustible material must be 4" from the side
of the fireplace cabinet (see Figure 4).
Note: When installing your gas logs into
a manufactured firebox, follow firebox
manufacturer's 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".
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 fireplace opening is not
needed. Go to Installing Damper
Clamp Accessory for Vented
Operation, page 12.
/ "
1
*Minimum 16" from Side Wall
2
Figure 4 - Minimum Clearance for
/ " from the wall. This com-
1
2
Example
Combustible to Wall
*
122001-01C