9
Clearance from the side of the fireplace opening to any combustible material and wall should follow dia
-
gram in Figure 4.
Clearance from the top of the fireplace opening to the ceiling must not be less than 42 inches.
MINIMUM NONCOMBUSTIBLE MATERIAL CLEARANCE
If Not Using Mantel
You must have noncombustible material(s) above the fireplace opening. Noncombustible materials (such as
slate, marble, tile, etc.) must be at least / inch thick. With sheet metal, you must have noncombustible material
behind it, such as a noncombustible fireplace hood accessory. See Figure 5 next page for minimum clearance
requirements.
A.
B.
WARNING:
Seal any fresh air vents or ash clean-out doors located on the floor or wall of fireplace to
prevent drafting caused by pilot outage or sooting. Use a heat-resistant sealant. Do not seal chimney flue
damper.
CAUTION:
This heater creates warm air currents. These currents move heat to wall surface next to heater.
Installing heater next to vinyl or cloth wall coverings or operating heater where impurities (such as tobacco
smoke, aromatic candles, cleaning fluids, oil or kerosene lamps, etc.) in the air exist may discolor walls.
NOTICE:
State or local codes may only allow operation of this appliance in a vented configuration. Check
your state or local codes.
NOTICE:
This heater is intended for use as supplemental heat. Use this heater along with your primary
heating system. Do not install this heater as your primary heat source. If you have a central heating sys-
tem you may run the system’s circulating blower while using the heater. This will help circulate the heat
throughout the house. In the event of power outage, you can use this heater as your primary heat source.
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 5 through 7.
WARNING:
This appliance is designed
for installation in only a solid-fuel burn-
ing masonry or UL 7 factory-built
fireplace or in a listed ventless firebox
enclosure. Exception: DO NOT install
LOG SIZING REQUIREMENTS
Log Size
Minimum Firebox Size
High
Depth
Front Width Rear Width
GLD850
0 in.
3 in.
9 in.
3 in.
GLD440
0 in.
4 in.
30 in.
4 in.
GLD450
0 in.
4 in.
30 in.
4 in.
CHECK GAS TYPE
Make sure your gas supply is correct for
your log set. If supply is not correct, do
not install heater. Call dealer where you
purchased heater for proper gas log set.
this appliance in a factory-built fireplace
that includes instructions stating it has
not been tested or should not be used
with unvented gas logs.
MINIMUM CLEARANCE FOR SIDE
Combustible Material, Side Wall, and
Ceiling.
Figure 4 - Minimum Clearance for Combustible to Wall
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