Grill
Front
Panel
Figure 1 - Vent-Free Gas Heater
1. Remove heater from carton.
2. Remove all protective packaging applied
to heater for shipping
Water vapor is a by-product of gas combus-
tion. An unvented room heater produces ap-
proximately one (1) ounce (30 mL) of water for
every 1,000 BTUs (0.3 KWs) of gas input per
hour. Unvented room heaters are recommended
as supplemental heat (a room) rather than 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
atmosphere experienced during cold weather.
6
PREPARING FOR INSTALLATION
Ignitor Button
Control
Knob
UNPACKING
WATER VAPOR: A BY-PRODUCT OF
UNVENTED ROOM HEATERS
www.usaprocom.com
Before beginning assembly or operation of
the product, make sure all parts are present.
Compare parts with package contents list and
Figure 1. If any part is missing or damaged,
do not attempt to assemble, install or operate
the product. Contact customer service for
replacement parts.
Burner
Heater Cabinet
3. Check heater for any shipping damage. If
heater is damaged, promptly inform dealer
where you bought heater.
The following steps will help ensure that water
vapor does not become a problem.
1. Be sure the heater is sized properly for the
application, including ample combustion
air and circulation air.
2. If high humidity is experienced, a dehu-
midifier 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.
200310-01C