Operating instructions

a furnace, follow items 1 through 5 before bringing the
control or yourself into contact with the furnace. Put all
used AND new controls into containers before touching
ungrounded objects.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
INTRODUCTION
The model 331AAV Series C or D Furnace is available in sizes
65,000 through 123,000 Btuh input capacities.
The design of the downflow/horizontal gas-fired furnace is CSA
(A.G.A. and C.G.A.) certified for natural and propane gases and
for installation on noncombustible flooring. The furnace is factory-
shipped for use with natural gas. The manufacturer’s accessory gas
conversion kit is required to convert furnace for use with propane
gas.
These furnaces SHALL NOT be installed directly on carpeting,
tile, or any other combustible material other than wood flooring. In
downflow installations, the manufacturer’s accessory floor base
must be used when installed on combustible materials and wood
flooring. Special base is not required when this furnace is installed
on manufacturer’s Coil Assembly Part No. CD5 or CK5, or when
Coil Box Part No. KCAKC is used. This furnace is for installation
in alcoves, attics, crawlspaces, basements, closets, or utility rooms.
The design of this furnace line is not CSA (A.G.A. and C.G.A.)
certified for installation in mobile homes, recreation vehicles, or
outdoors.
Before installing the furnace in the United States, refer to the
current edition of the NFGC and NFPA 90B. For copies of the
NFGC and NFPA 90B, contact the National Fire Protection
Agency Inc., Batterymarch Park, Quincy, MA 02269; or the
American Gas Association, 1515 Wilson Blvd., Arlington, VA.
22209.
Before installing the furnace in Canada, refer to the current edition
of the NSCNGPIC. For a copy of the NSCNGPIC, contact
Standard Sales, CSA International, 178 Rexdale Blvd., Etobicoke
(Toronto), Ontario, Canada M9W 1R3.
Installation must comply with regulations of serving gas supplier
and local building, heating, plumbing or other codes in effect in the
area in which installation is made. In the absence of local building
codes, installation must comply with the NFGC in the United
States and the NSCNGPIC in Canada.
These instructions cover minimum requirements for a safe instal-
lation and conform to existing national standards and safety codes.
In some instances, these instructions exceed certain local codes
and ordinances, especially those that may not have kept pace with
changing residential construction practices. We require these
instructions as a minimum for a safe installation.
The duct system should be designed and sized according to
accepted national standards published by: Air Conditioning Con-
tractors Association (ACCA), Sheet Metal and Air Conditioning
Contractors National Association (SMACNA). Or consult the
Residential Systems Design Guidelines reference tables available
from your local distributor. The duct system should be sized to
handle the maximum CFM capabilities of the equipment at the
optimum design static pressure.
CAUTION: Application of this furnace should be in-
doors with special attention given to vent sizing and
material, gas input rate, air temperature rise, and unit
sizing. Improper installation or misapplication of the
furnace can require excessive servicing or cause prema-
ture component failure.
Installation must conform to regulations of serving gas supplier
and local building, heating, and plumbing codes in effect in the
area in which installation is made, or in absence of local codes with
requirements of the NFGC.
To aid in installation, troubleshooting, and service, a status code
label is located on blower component door. This label explains
how to use the LED status indicated on furnace control which is
viewed through the sight glass on door.
→ Fig. 2—Clearances to Combustibles
A00300
322286-101 REV. F
MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION
This forced air furnace is equipped for use with natural gas at
altitudes 0-10,000 ft (0-3,050m).
An accessory kit, supplied by the manufacturer,shall be used to
convert to propane gas use or may be required for some natural gas
applications.
This furnace is for indoor installation in a building constructed on site.
This furnace may be installed on combustible flooring in alcove or
closet at minimum clearance from combustible material.
This furnace may be used with a Type B-1 Vent and may be vented in
common with other gas-fired appliances.
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For installation on non-combustible floors only.
For installation on combustible flooring only when installed on
special base, Part No. KGASB0201ALL, Coil Assembly, Part No.
CD5 or CK5, or Coil Casing, Part No. KCAKC.
For furnaces wider than 14.25 inches (362mm) may be 0 inches.
18 inches front clearance required for alcove.
Indicates supply or return sides when furnace is in the horizontal
position. Line contact only permissible between lines formed by
intersections of the Top and two Sides of the furnace jacket, and
building joists, studs or framing.
For single wall vent type 6 inches.
For Type B-1 vent type 3 inches.
Clearance to Back 0 inches (0 po) in downflow and horizontal
(attic/alcove & crawlspace) positions and 3 inches (3 po) in
horizontal closet positions.
#
Clearance in inches
Clearance arrows
do not change with
furnace orientation.
BOTTOM
1
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1" #
0"
1"
1"
30"
MIN
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Vent Clearance to combustibles:
For Single Wall vents 6 inches (6 po).
For Type B-1 vent type 1 inch (1 po).
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This furnace is approved for DOWNFLOW and HORIZONTAL
installations.
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TOP / PLENUM
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