4
SAFETY INFORMATION
Safety markings are used frequently throughout this
manual to designate a degree or level of seriousness and
should not be ignored.
WARNING
indicates a potentially
hazardous situation that if not avoided, could result in
personal injury or death.
CAUTION
indicates a potentially
hazardous situation that if not avoided, may result in minor
or moderate injury or property damage.
WARNING:
The safety information listed below must be
followed during the installation, service, and
operation of this furnace. Failure to follow safety
recommendations could result in possible
damage to the equipment, serious per
sonal
injury or death.
• Use only with type of gas approved for this furnace.
Refer to the furnace rating plate.
• Install this furnace only in a location and position as
specifi ed in Table 1 (page 23).
• Provide adequate combustion and ventilation air to the
furnace space as specifi ed on Pages 6 - 8.
• Combustion products must be discharged outdoors.
Connect this furnace to an approved vent system only,
as specifi ed on Pages 12 - 13.
• Never test for gas leaks with an open fl ame. Use a
commercially available soap solution to check all
connections (Page 15).
• This furnace is designed to operate with a maximum
external pressure rise of 0.5 inches of water column.
Consult Tables 2 and 3 (pages 26 - 28), and the rating
plate for the proper circulating air fl ow and temperature
rise. It is important that the duct system be designed to
handle the desired fl ow rate and temperature rise. An
improperly designed duct system can result in nuisance
shutdowns, and comfort or noise issues.
• When supply ducts carry air circulated by the furnace
to areas outside the space containing the furnace, the
return air shall also be handled by duct(s) sealed to
the furnace casing and terminating outside the space
containing the furnace.
• This furnace may be used for temporary heating of
buildings or structures under construction. See the
guidelines listed on page 5.
• A
gas-fi red furnace for installation in a residential garage
must be installed as specifi ed on Page 6.
REQUIREMENTS and CODES
This furnace must be installed in accordance with
these instructions, all applicable local building codes
and the current revision of the National Fuel Gas Code
(NFPA54/ANSI Z223.1) or the Natural Gas and Propane
Installation Code, CAN/CGA B149.1.
Additional codes listed below are for reference purposes
only and do not necessarily have jurisdiction over local or
state codes. Always consult with local authorities before
installing any gas appliance.
Combustion and Ventilation Air
• US: National Fuel Gas Code (NFGC), Air for Combustion
and Ventilation
• CANADA: Natural Gas and Propane Installation Codes
(NSCNGPIC), Venting Systems and Air Supply for
Appliances
Duct Systems
• US and CANADA: Air Conditioning Contractors
Association (ACCA) Manual D, Sheet Metal and
Air Conditioning Contractors National Association
(SMACNA), or American Society of Heating,
Refrigeration, and Air Conditioning Engineers
(ASHRAE) Fundamentals Handbook
Electrical Connections
• US: National Electrical Code (NEC) ANSI/NFPA 70
• CANADA: Canadian Electrical Code CSA C22.1
Gas Piping and Gas Pipe Pressure Testing
• US: NFGC and National Plumbing Codes
• CANADA:
NSCNGPIC
General Installation
• US: Current edition of the NFGC and the NFPA 90B. For
copies, contact the National Fire Protection Association
Inc., Batterymarch Park, Quincy, MA 02269; or American
Gas Association, 400 N. Capitol, N.W., Washington DC
20001 or www.NFPA.org
• CANADA: NSCNGPIC. For a copy, contact Standard
Sales, CSA International, 178 Rexdale Boulevard,
Etobicoke (Toronto), Ontario, M9W 1R3 Canada
Safety
• US: (NFGC) NFPA 54–1999/ANSI Z223.1 and the
Installation Standards, Warm Air Heating and Air
Conditioning Systems ANSI/NFPA 90B.
• CANADA: CAN/CGA-B149.1 and .2–M00 National
Standard of Canada. (NSCNGPIC)
Summary of Contents for 045C-23ASA
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