6
Refer to
for appropriate termination
locations and to determine if the piping system from
furnace to termination can be accomplished within
the guidelines given. The length of ue and/
or combustion air piping can be a limiting factor in the
location of the furnace.
• Locate the furnace so condensate ows downwards
to the drain. Do not locate the furnace or its
condensate drainage system in any area subject to
below freezing temperatures without proper freeze
protection. Refer to
for further details.
• Ensure adequate combustion air is available for the
furnace. Improper or insucient combustion air
can expose building occupants to gas combustion
products that could include carbon monoxide. Refer
to
• Set the furnace on a level oor to enable proper
condensate drainage. If the oor becomes wet or
damp at times, place the furnace above the oor on
a concrete base sized approximately 1-1/2” larger
than the base of the furnace. Refer to the
for leveling of
horizontal furnaces.
• Ensure upow or horizontal furnaces are not installed
directly on carpeting, or any other combustible
material. The only combustible material allowed is
wood.
• A special accessory subbase must be used for upright
counterow unit installations over any combustible
material (including wood). Refer to subbase
instructions for installation details. ( A subbase
will not be required if an air conditioning coil is located
beneath the furnace between the supply air opening
and the combustible oor.
• Exposure to contaminated combustion air will result
in safety and performance-related problems. Do
not install the furnace where the combustion air is
exposed to the following substances:
- permanent wave solutions
- cleaning solutions (such as perchloroethylene)
- printing inks
- chlorinated waxes or cleaners
- paint removers
- chlorine-based swimming pool chemicals
- varnishes
- water softening chemicals
- hydrochloric acid
- carbon tetrachloride
- cements and glues
-deicing salts or chemicals
- halogen type refrigerants
- antistatic fabric softeners for clothes dryers
- masonry acid washing materials
A copy of the National Fuel Gas Code (NFPA 54/ANSI
Z223.1) can be obtained from any of the following:
25 West 43rd Street, 4th Floor
New York, NY 10036
1 Batterymarch Park
Quincy, MA 02169-7471
8501 East Pleasant Valley
Independence, OH 44131
The rated heating capacity of the furnace should be greater
than or equal to the total heat loss of the area to be heated.
The total heat loss should be calculated by an approved
method or in accordance with “ASHRAE Guide” or “Manual
J-Load Calculations” published by the Air Conditioning
Contractors of America.
A copy of the CAN/CSA B149.1-15 Installation Codes can
also be obtained from:
178 Rexdale Boulevard
Etobicoke, Ontario, Canada M9W 1R3
Follow the instructions listed below and the guidelines
provided in the
section when selecting a furnace location.
WARNING
WARNING
• Centrally locate the furnace with respect to the
proposed or existing air distribution system.
• Ensure the temperature of the return air entering the
furnace is between 55°F and 100°F when the furnace
is heating.
• Provide provisions for venting combustion products
outdoors through a proper venting system. Special
consideration should be given to vent/ue pipe routing
and combustion air intake pipe when applicable.
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