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WATER VAPOR:A BY-PRODUCT OF
UNVENTED ROOM HEATERS
Water vapor is by-product of gas
combustion.an unvented room
heater prodrces approximately one
(1) ounce (30ml) of water for every 1,
000BTU’s (.3kw’s) of gas input per
hour.
Unvented room heaters are recom-
mended as supplemtal heat (a
room) rather that a primary heat
source(an entire house) in most
supplemental heat applications,the
water vapor does not create a
problem ,in most applications the
water vapor enhances the low
humidity atmosphers experienced
during cold weather.
The following steps will help insure
that water vapor does not become a
problem.
1. Besure the heater is sized prop-
erly for the application,including
ample combustion air and circula-
tion of the air.
2.If high humidity is experienced, a
dehumidifier may be used to help
lower the water vapor content of the
air.
3.Do not use an unvented room
heater as the primary heat source.
INSTALLATION
WARNING: A qualified service
person must install heater. Follow
all local codes.
WARNING: Never install the
heater
in a bedroom or bathroom
in a recreational vehicle
where curtains, furniture, clothing,
or other flammable objects are less
than 42 inches from the front, top, or
sides of the heater
in high traffic areas
in windy or drafty areas
WARNING: Maintain the
minimum clearances. If you can,
provide greater clearances from
floor, ceiling, and adjoining side and
back walls.
CAUTION: This heater creates
warm air currents. These currents
move heat to wall surfaces 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.
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 6.
CHECK GAS TYPE
Be sure your gas supply is right for
your heater. Otherwise, call dealer
where you bought the heater for proper
type heater.
Figure 4 -Minimum Clearance to Wall and Ceiling
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