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SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified person-
nel should install, repair, or service heating equipment. Untrained
personnel can perform basic maintenance functions such as clean-
ing and replacing air filters. All other operations must be per-
formed by trained service personnel. When working on heating
equipment, observe precautions in literature, on tags, and on labels
attached to or shipped with unit and other safety precautions that
may apply.
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA No.
54-1996/ANSI Z223.1-1996 and the Installation Standards, Warm
Air Heating and Air Conditioning Systems (NFPA 90B)
ANSI/NFPA 90B. In Canada, refer to the current edition of the
National Standard of Canada CAN/CGA-B149.1- and .2-M95
Natural Gas and Propane Installation Codes (NSCNGPIC). Wear
safety glasses and work gloves. Have fire extinguisher available
during start-up and adjustment procedures and service calls.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on unit or in instructions and manuals,
be alert to potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with safety-alert symbol. DANGER
identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies hazards which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
CAUTION: Electrostatic discharge can affect electronic
components. Take precautions during furnace installation
and servicing to protect the furnace electronic control.
Precautions will prevent electrostatic discharges from
personnel and hand tools which are held during the
procedure. These precautions will help to avoid exposing
the control to electrostatic discharge by putting the
furnace, the control, and the person at the same electro-
static potential.
1. Disconnect all power to the furnace. DO NOT TOUCH
THE CONTROL OR ANY WIRE CONNECTED TO THE
CONTROL PRIOR TO DISCHARGING YOUR BODY’S
ELECTROSTATIC CHARGE TO GROUND.
2. Firmly touch a clean, unpainted, metal surface of the
furnace chassis which is close to the control. Tools held in
a person’s hand during grounding will be satisfactorily
discharged.
3. After touching the chassis you may proceed to service the
control or connecting wires as long as you do nothing that
→ Fig. 3—Clearances to Combustibles
A97378
323857-101 REV. B (LIT)
MINIMUM INCHES CLEARANCE
TO COMBUSTIBLE CONSTRUCTION
*
Mimimum front clearance for service 30
inches (762mm).
140 size furnaces require 1 inch back
clearance to combustible materials.
For installation on combustible floors only
when installed on special base No.
KGASB0201ALL, Coil Assembly, Part No.
CD5 or CK5, or Coil Casing, Part No.
KCAKC.
Clearance shown is for air inlet and air
outlet end.
Line contact is permissible only between
lines formed by intersections of top and two
sides of furnace jacket, and building joists,
studs, or framing.
120 and 140 size Furnaces require 1 inch
bottom clearance to combustible materials.
Ø
†
§
Clearance in inches
Vent clearance to
combustibles 0".
Clearance arrows
do not change with
furnace orientation.
DOWNFLOW POSITIONS:
HORIZONTAL POSITIONS:
††
ALL POSITIONS:
*
BOTTOM
DESSOUS
0"
Ø
†
3"
0"
§
0"
††
TOP/PLENUM
DESSUS/CHAMBRE D´AIR
1"
0"
§
30
MIN
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R
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T
A
V
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T
B
C
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A
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E
A
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R
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È
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T
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A
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F
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N
This forced air furnace is equipped for use with natural gas at altitudes 0 - 10,000 ft (0 - 3,050m), except 140 size
Furnaces are only approved for altitudes 0 - 7,000 ft. (0 - 2,135m).
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 in a manufactured
(mobile) home when stated on rating plate and using factory authorized kit.
This furnace may be installed on combustible flooring in alcove or closet at minimum clearance from combustible
material.
This appliance requires a special venting system. Refer to the installation instructions for parts list and method of
installation. This furnace is for use with schedule-40 PVC, PVC-DWV, or ABS-DWV pipe, and must not be vented in
common with other gas-fired appliances. Construction through which vent/air intake pipes may be installed is maximum
24 inches (600 mm), minimum 3/4 inches (19 mm) thickness (including roofing materials).
—3—
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