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www.usaprocom.com
200025-01C
6
WATER VAPOR: A BY-PRODUCT OF UNVENTED ROOM
HEATERS
Water vapor is a by-product of gas combus-
tion. An unvented room heater produces ap-
proximately 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.
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-
midier 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.
LOCAL CODES
1. Remove the wrapping lm around unit.
2. Remove the top packaging and 4 angle
beads.
3. Remove protective plastic wrap.
4. Check all items for any shipping damage.
If damaged, promptly inform dealer where
you purchased the heater.
Install and use heater with care. Follow all lo-
cal codes. In the absence of local codes, use
the latest edition of The National Fuel Gas
Code, ANSI Z223.1/NFPA 54*.
*Available from:
American National Standards Institute, Inc.
25 West 43rd Street
New York, NY 10036
National Fire Protection Association, Inc.
1 Batterymarch Park
Quincy, MA 02269-9101
This heater is designed for vent-free op-
eration. State and local codes in some areas
prohibit the use of vent-free heaters.
State of Massachusetts: The installation
must be made by a licensed plumber or
gas tter in the Commonwealth of Mas-
sachusetts.
Sellers of unvented propane or natural
gas-red supplemental room heaters shall
provide to each purchaser a copy of 527
CMR 30 upon sale of the unit.
In the State of Massachusetts the gas
cock must be a T-handle type. The State
of Massachusetts requires that a exible
appliance connector cannot exceed three
feet in length.
UNPACKING
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