6
•
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 ordinances.
In their absence, follow the latest edition of the National 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
National Fire Protection Association
CSA International
25 West 43rd Street, 4th Floor
1 Batterymarch Park
8501 East Pleasant Valley
New York, NY 10036
Quincy, MA 02169-7471
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 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 -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 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
carbon tetrachloride
water softening chemicals
swimming pool chemicals
deicing salts or chemicals
halogen type refrigerants
printing inks
cleaning solutions (such as perchloroethylene)
