Installations Instructions
8
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 instal-
lation and operation instructions, all local building codes
and ordinances. In their absence, follow the latest edi-
tion of the National Fuel Gas Code (NFPA 54/ANSI Z223.1),
and/or CAN/CSA B149. 1-15 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
25 West 43rd Street, 4th Floor
New York, NY 10036
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02169-7471
CSA International
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:
CSA International
178 Rexdale Boulevard
Etobicoke, Ontario, Canada M9W 1R3
L
OCAT ION
R
EQUIREMENTS
& C
ONSIDERATINOS
Follow the instructions listed below and the guidelines
provided in the Com b ust ion an d Ven t i l at ion Air Requ ir em en t s
section when selecting a furnace location.
T
O
PREVENT
POSSIBLE
EQUIPM EN T
DAM AGE
,
PROPERTY
DAM AGE
,
PERSONAL
INJURY
OR
DEATH
,
THE
FOLLOW ING
BULLET
POINTS
M UST
BE
OBSERVED
W HEN
INSTALLING
THIS
UNIT
.
WARNING
P
OSSIBLE
PROPERTY
DAM AGE
,
PERSONAL
INJURY
OR
DEATH
DUE
TO
FIRE
,
EXPLOSION
,
SM OKE
,
SOOT
,
CONDENSATION
,
ELECTRICAL
SHOCK
OR
CARBON
M ONOXIDE
M AY
RESULT
FROM
IM PROPER
INSTALLATION
,
REPAIR
OPERATION
,
OR
M AINTENANCE
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 -Termination 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