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R80ESN/R80ESL(Series A): Installation, Start–Up, Operating and Service and Maintenance Instructions
LOCATION
GENERAL
This multipoise furnace is shipped in packaged configuration. Some
assembly and modifications are required when used in any of the four
applications (see
Fig.
5).
THE BLOWER IS LOCATED
TO THE RIGHT OF THE
BURNER SECTION, AND
AIR CONDITIONED AIR IS
DISCHARGED TO THE LEFT.
THE BLOWER IS
LOCATED ABOVE THE
BURNER SECTION, AND
CONDITIONED AIR IS
DISCHARGED DOWNWARD
Fig. 5 – Multipoise Orientations
This furnace must:
• be installed so the electrical components are protected from water.
• not be installed directly on any combustible material other than
wood flooring for upflow applications. Downflow installations
require use of a factory-approved floor base or coil assembly when
installed on combustible materials or wood flooring (refer to
SAFETY CONSIDERATIONS).
• be located as close to the chimney or vent and attached to an air
distribution system. Refer to Air Ducts section.
• be provided ample space for servicing and cleaning. Always
comply with minimum fire protection clearances shown on the
furnace clearance to combustible label.
The following types of furnace installations may require OUTDOOR
AIR for combustion due to chemical exposures:
• Commercial buildings
• Buildings with indoor pools
• Laundry rooms
• Hobby or craft rooms, and
• Chemical storage areas
If air is exposed to the following substances, it should not be used for
combustion air, and outdoor air may be required for combustion:
• Permanent wave solutions
• Chlorinated waxes and cleaners
• Chlorine based swimming pool chemicals
• Water softening chemicals
• De-icing salts or chemicals
• Carbon tetrachloride
• Halogen type refrigerants
• Cleaning solvents (such as perchloroethylene)
• Printing inks, paint removers, varnishes, etc.
• Hydrochloric acid
• Cements and glues
• Antistatic fabric softeners for clothes dryers
• Masonry acid washing materials
All fuel-burning equipment must be supplied with air for fuel
combustion. Sufficient air must be provided to avoid negative pressure
in the equipment room or space. A positive seal must be made between
the furnace cabinet and the return-air duct to prevent pulling air from the
burner area and from draft safeguard opening.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
FURNACE CORROSION HAZARD
Failure to follow this caution may result in furnace damage.
Air for combustion must not be contaminated by halogen compounds,
which include fluoride, chloride, bromide, and iodide. These elements
can corrode heat exchangers and shorten furnace life. Air contaminants
THE BLOWER IS
LOCATED BELOW THE
are found in aerosol sprays, detergents, bleaches, cleaning solvents,
BURNER SECTION, AND
CONDITIONED AIR IS
salts, air fresheners, and other household products.
DISCHARGED UPWARD.
AIR FOR COMBUSTION AND VENTILATION
Provisions for adequate combustion, ventilation, and dilution air must be
provided in accordance with:
THE BLOWER IS
LOCATED TO THE LEFT
OF THE BURNER SECTION,
AND CONDITIONED AIR IS
DISCHARGED TO THE RIGHT.
A02097
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
The operation of exhaust fans, kitchen ventilation fans, clothes dryers,
attic exhaust fans or fireplaces could create a NEGATIVE PRESSURE
CONDITION at the furnace. Make-up air MUST be provided for the
ventilation devices, in addition to that required by the furnace. Refer to
Carbon Monoxide Poisoning Hazard warning in venting section of
these instructions to determine if an adequate amount of make-up air is
available.
The requirements for combustion and ventilation air depend upon
whether or not the furnace is located in a space having a volume of at
least 50 cubic feet per 1,000 Btuh input rating for all gas appliances
installed in the space.
Outdoor Combustion Air Method
5
CAUTION
!
• U.S. installations: Section 9.3 of the current edition of NFGC
NFPA54/ANSI Z223.1, Air for Combustion and Ventilation, and
applicable provisions of the local building codes.
WARNING
!
• Spaces having less than 50 cubic feet per 1,000 Btuh require the
OUTDOOR COMBUSTION AIR METHOD.
• Spaces having at least 50 cubic feet per 1,000 Btuh may use the
INDOOR COMBUSTION AIR, STANDARD or KNOWN AIR
INFILTRATION METHOD.
1. Provide the space with sufficient air for proper combustion,
ventilation, and dilution of flue gases using permanent horizontal or
vertical duct(s) or opening(s) directly communicating with the
outdoors or spaces that freely communicate with the outdoors.
2.
Fig. 6
illustrates how to provide TWO OUTDOOR OPENINGS,
one inlet and one outlet combustion and ventilation air opening, to
the outdoors.
a. One opening MUST commence within 12-in. (300 mm) of the
ceiling and the second opening MUST commence within 12-in.
(300 mm) of the floor.
b. Size openings and ducts per
c. TWO HORIZONTAL DUCTS require 1 square inch of free area
per 2,000 Btuh (1,100 mm2/kW) of combined input for all gas
appliances in the space per
d. TWO OPENINGS OR VERTICAL DUCTS require 1 square
inch of free area per 4,000 Btuh (550 mm2/kW) for combined
input of all gas appliances in the space per
3. ONE OUTDOOR OPENING requires:
a. 1 square inch of free area per 3,000 Btuh (734 mm2/kW) for
combined input of all gas appliances in the space per
Fig. 6
and
Table
1.
Fig. 6
and
Table
1.
Fig. 6
and
Table
Table 1
1.
and
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