8
• All furnace operating conditions (including ignition, input
rate, temperature rise and venting) are verified according
to these installation instructions.
NOTE: The Commonwealth of Massachusetts requires that the
following additional requirements must also be met:
• Gas furnaces must be installed by a licensed plumber or
gas fitter.
• A T-handle gas cock must be used.
• If the unit is to be installed in an attic, the passageway to
and the service area around the unit must have flooring.
To ensure proper furnace operation, install, operate and
maintain the furnace in accordance with these installation
and operation instructions, all local building codes and or-
dinances. In their absence, follow the latest edition of the Na-
tional Fuel Gas Code (NFPA 54/ANSI Z223.1), and/or CAN/CSA
B149 Installation Codes, local plumbing or waste water codes,
and other applicable codes.
A copy of the National Fuel Gas Code (NFPA 54/ANSI Z223.1)
can be obtained from any of the following:
American National Standards Institute
1430 Broadway
New York, NY 10018
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269
CSA International
8501 East Pleasant Valley
Cleveland, 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 accor-
dance with “ASHRAE Guide” or “Manual J-Load Calculations” pub-
lished by the Air Conditioning Contractors of America.
A copy of the CAN/CSA B149 Installation Codes can also be
obtained from:
CSA International
178 Rexdale Boulevard
Etobicoke, Ontario, Canada M9W 1R3
L
OCATION
R
EQUIREMENTS
& C
ONSIDERATIONS
Follow the instructions listed below and the guidelines provided in
the Combustion and Ventilation Air Requirements section when
selecting a furnace location.
T
O
PREVENT
POSSIBLE
EQUIPMENT
DAMAGE
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
,
THE
FOLLOWING
BULLET
POINTS
MUST
BE
OBSERVED
WHEN
INSTALLING
THIS
UNIT
.
WARNING
P
OSSIBLE
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
EXPLOSION
,
SMOKE
,
SOOT
,
CONDENSATION
,
ELECTRICAL
SHOCK
OR
CARBON
MONOXIDE
MAY
RESULT
FROM
IMPROPER
INSTALLATION
,
REPAIR
OPERATION
,
OR
MAINTENANCE
OF
THIS
PRODUCT
.
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/flue pipe routing
and combustion air intake pipe when applicable. Refer
to Vent/Flue Pipe and Combustion Air Pipe -T ermination
Locations for appropriate termination locations and to
determine if the piping system from furnace to termination
can be accomplished within the guidelines given. NOTE:
The length of flue and/or combustion air piping can be a
limiting factor in the location of the furnace.
• Locate the furnace so condensate flows 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
Condensate Drain Lines and Trap for further details.
• Ensure adequate combustion air is available for the
furnace. Improper or insufficient combustion air can
expose building occupants to gas combustion products
that could include carbon monoxide. Refer to
Combustion and Ventilation Air Requirements.
• Set the furnace on a level floor to enable proper
condensate drainage. If the floor becomes wet or damp
at times, place the furnace above the floor on a concrete
base sized approximately 1-1/2" larger than the base of
the furnace. Refer to the Horizontal Applications and
Considerations for leveling of horizontal furnaces.
• Ensure upflow 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
counterflow unit installations over any combustible
material (including wood). Refer to subbase instructions
for installation details. (NOTE: A subbase will not be
required if an air conditioning coil is located beneath the
furnace between the supply air opening and the
combustible floor.
• 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
chlorinated waxes or cleaners
chlorine-based swimming pool chemicals
water softening chemicals