Instruction manual

7
Refer to Section IX, Vent/Flue Pipe and Combustion
Air Pipe -Termination Locations for appropriate ter-
mination locations. Also, refer to Section IX to
determine if the piping system from furnace to termi-
nation 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 that the condensate can be
piped at a downward slope between furnace and
drain. Do not locate the furnace or its condensate
drainage system in any area subject to below freez-
ing temperatures without proper freeze protection.
Refer to Section X, Condensate Drain Lines and
Trap for further details.
• 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 Section
VII, Horizontal Applications and Considerations for
leveling of horizontal furnaces.
• Ensure upflow or horizontal furnaces are not in-
stalled directly on carpeting, or any other combus-
tible material. The only combustible material al-
lowed is wood.
• A special accessory sub-base must be used for
upright counterflow unit installations over any com-
bustible material (including wood). Refer to sub-
base instructions for installation details. (NOTE: A
sub-base 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 ex-
posed to the following substances:
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
• Seal off a non-direct vent furnace if it is installed near
an area frequently contaminated by any of the above
substances. This protects the non-direct vent
furnace from air-borne contaminants. To ensure that
the enclosed non-direct vent furnace has an ad-
equate supply of combustion air, vent from a nearby
uncontaminated room or from outdoors. Refer to the
Section V, Combustion and Ventilation Air Require-
National Fuel Gas Code (NFPA 54/ANSI Z223.1), and/or
CAN/CGA 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
American Gas Association
1515 Wilson Boulevard
Arlington, VA 22209
A copy of the CAN/CGA B149 Installation Codes can be
obtained from:
Canadian Gas Association
55 Scarsdale Road
Don Mills, Ontario, Canada M3B, 2R3
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.
IV. Location Requirements and
Considerations
GENERAL
WARNING
To prevent possible death, personal injury,
equipment damage, or property damage
the following bulletted points must be
observed when installing the unit.
Follow the instructions listed below when selecting a
furnace location. Refer also to the guidelines provided in
Section V, Combustion and Ventilation Air Requirements.
• 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 fur-
nace is heating.
• Provide provisions for venting combustion products
outdoors through a proper venting system. Special
consideration should be given to vent/flue pipe rout-
ing and combustion air intake pipe when applicable.