3
GENERAL SAFETY INFORMATION
Use only the fuel for which the duct furnace is designed
(see rating plate). Using LP gas in a heater that requires
natural gas, of vice versa, will create risk of gas leaks,
carbon monoxide poisoning, and explosion.
Do not attempt to convert furnace
for use with a fuel other than the one intended.
Such conversion is dangerous, as it will create
the risks previously listed.
Make certain that the power source conforms to the
electrical requirements of the furnace.
Do not depend upon a thermostat
or other switch as sole means of disconnecting
power when installing or servicing duct furnace.
Always disconnect power at main circuit breaker
as described above. Failure to do so could result
in electrical shock.
Special attention must be given to any grounding
information pertaining to this duct furnace. To prevent
the risk of electrocution, the furnace must be securely
and adequately grounded. This should be accomplished
by connecting a ground conductor between the service
panel and the furnace. To ensure a proper ground, the
grounding means must be tested by a qualifi ed electrician.
Do not insert fi ngers or foreign objects into furnace or its
air moving device. Do not block or tamper with the heater
in any manner while in operation, or just after it has been
turned off, as some parts maybe hot enough to cause
injury.
This furnace is intended for general heating applications
ONLY. It must NOT be used in potentially dangerous
locations such as fl ammable, explosive, chemical-laden,
or wet atmospheres.
In cases in which property damage may result from
malfunction of the fur nace, a back-up system or
temperature sensitive alarm should be used.
The open end of piping systems being
purged shall not discharge into areas where there
are sources of ignition or into confi ned spaces
UNLESS precautions are taken as follows: (1) by
ventilation of the space, (2) control of the purging
rate, (3) elimination of all hazardous conditions. All
precautions must be taken to perform this operation
in a safe manner!
Unless otherwise specifi ed, the following conversions
may be used for calculating SI unit measurements:
1 foot = 0.305 m
1 inch = 25.4 mm
1 gallon = 3.785 L
1 pound = 0.453kg
1 psig = 6.894 kPa
1 cubic foot = 0.028m
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Failure to comply with the general
safety information may result in extensive
property damage, severe personal injury, or
death!
This product must be installed by
a licensed plumber or gas fi tter when installed
within the Commonwealth of Massachusetts.
Installation must be in accordance with local codes, or
in absence of local codes, with the latest edition of ANSI
Standard Z223.1 (N.F.P.A. No. 54) National Fuel
Gas Code. All of the ANSI and NFPA Standards referred
to in these installation instructions are those that were
applicable at the time the design of this appliance was
certified. The ANSI Standards are available from the
American National Standards Institute, Inc., 11 West
42nd Street, New York, NY 10036 or www.ansi.org.
The NFPA Standards are available from the National
Fire Protection Association, Batterymarch Park, Quincy,
MA 02269. These duct furnaces are designed for use in
airplane hangars when installed in accordance with
ANSI/NFPA No. 409, and in public garages when
installed in accordance with NFPA No. 88A and NFPA
No. 88B.
If installed in Canada, the installation must conform with
local building codes, or in the absence of local building
codes, with CGA-B149.1 “Installation Codes for Natural
Gas Burning Appliances and Equipment” or CGA-B149.2
“Installation Codes for Propane Gas Burning Appliances
and Equipment.” These duct furnaces have been designed
and certifi ed to comply with CGA 2.6. Also see sections
on installation in AIRCRAFT HANGARS and PUBLIC
GARAGES.
Do not alter the duct furnace in
any way, or damage to the unit and/or severe
personal injury or death may occur!
Never service any component
without fi rst disconnecting all electrical and gas
supplies to the unit, or severe personal injury or
death may occur!
Ensure that all power sources conform
to the requirements of the duct furnace, or damage
to the unit will result!
Follow installation instructions CAREFULLY to avoid
creating unsafe conditions. All wiring should be done
and checked by a qualifi ed electrician, using copper wire
only. All external wiring must conform to applicable local
codes, and to the latest edition of the National Electric
Code, ANSI/NFPA No. 70. All gas connections should be
made and leak-tested by a suitably qualifi ed individual,
per instructions in this manual.
Also follow procedures listed on the “Gas Equipment
Start-Up” sheet located in this manual.
1000 BTU/cu. ft. = 37.5 MJ/m
3
1000 BTU per hour = 0.293 kW
1 inch water column = 0.249 kPa
liter/second = CFM x 0.472
meter/second = FPM ÷ 196.8
