6
•
Direct vent (dual pipe) central forced air furnace
in which all combustion air supplied directly to the
furnace burners through a special air intake system
outlined in these instructions.
NOTE: Meeting the following conditions is
a requirement when using this furnace as a
construction site heater:
• The furnace has a permanently installed venting
system per these installation instructions.
• A room thermostat is used to control the furnace.
Fixed jumpers that provide continuous heating
CANNOT be used and can cause long term
equipment damage. Bi-metal thermostats or any
thermostat affected by vibration must be avoided
during construction.
• The furnace is attached to permanent return air
ducting sealed to the furnace.
• A return air temperature range between 60ºF (16ºC)
and 80ºF (27ºC) is maintained.
•
MERV 11 air filter(s) are installed in the system
and inspected daily and replaced as needed during
construction and upon completion of construction.
• The input rate and temperature rise settings are within
furnace rating plate guidelines.
• The furnace must be installed as a two-pipe system,
using 100% outside air for combustion during
construction.
• The furnace heat exchanger, components, duct
system, air filters, and evaporator coils are thoroughly
cleaned following final construction clean up by a
qualified person.
• All furnace operating conditions, including ignition,
input rate, temperature rise, and venting, are verified
by a qualified person according to these installation
instructions.
• Furnace doors must be in place on the furnace while
the furnace is operating in any mode.
NOTE: Damage or repairs due to failure to comply
with these requirements is not covered by the
manufacturer’s warranty.
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),
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 Road
Independence, OH 44131-5516
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.
LOCATION REQUIREMENTS &
CONSIDERATIONS
WARNING
To prevent possible equipment damage, property damage, per
-
sonal injury or death, the following bullet points must be
observed when installing this unit.
WARNING
Possible 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.
Follow the instructions listed below and the guidelines
provided in the
Combustion and Ventilation Air
Requirements
section when selecting a furnace location.
• 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.
