16
To ensure proper furnace operation, install, operate and
maintain the furnace in accordance with the installation
manual shipped with the furnace as well as all local build-
ing 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
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
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 accordance with “ASHRAE Guide” or “Manual J-Load Cal-
culations” published by the Air Conditioning Contractors of
America.
F
URNACE
I
NSTALLATION
R
EQUIREMENTS
Thoroughly read the Installation Manual shipped with the
furnace before conducting installation or repairs.
•
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 out-
doors through a proper venting system. Special consid-
eration 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 termina-
tion 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 fur-
nace. Improper or insufficient combustion air can ex-
pose 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 conden-
sate 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 Con-
siderations
for leveling of horizontal furnaces.
•
Ensure upflow or horizontal furnaces are not installed di-
rectly 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 ma-
terial (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 combus-
tible 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
deicing salts or chemicals
carbon tetrachloride
halogen type refrigerants
cleaning solutions (such as perchloroethylene)
printing inks
paint removers
varnishes
hydrochloric acid
cements and glues
antistatic fabric softeners for clothes dryers
and masonry acid washing materials
•
Isolate a non-direct furnace from an area contami-
nated by any of the above substances. This protects
the
non-direct vent
furnace from airborne contaminants.
To ensure that the enclosed
non-direct
vent
furnace has
an adequate supply of combustion air, vent from a nearby
uncontaminated room or from outdoors. Refer to the
Combustion and Ventilation Air Requirements
for details.
•
If the furnace is used in connection with a cooling
unit, install the furnace upstream or in parallel with
the cooling coil. Premature heat exchanger failure
will result if the cooling coil is placed upstream of the
furnace.
PRODUCT DESIGN
