WARNING:
This furnace must be installed in the down-
flow configuration ONLY. Improper installation, adjust-
ment, alteration, service, maintenance, or use can cause
carbon monoxide poisoning, explosion, fire, electrical
shock, or other conditions which may cause personal
injury, loss of life, or property damage. Consult a
qualified installer, service agency, local gas supplier, or
your distributor or branch for information or assistance.
The qualified installer or agency must use only factory-
authorized and listed kits or accessories when modifying
this product. Failure to follow this warning could result in
electrical shock, fire, personal injury, or death.
The design of the downflow gas-fired furnace is A.G.A./C.G.A.
certified for natural and propane gas and for installation on
noncombustible flooring. The furnace may be installed on com-
bustible flooring when installed with the accessory downflow
subbase. This furnace is for installation in alcoves, attics, base-
ments, closets, or utility rooms. The design of this furnace line is
not A.G.A./C.G.A. certified for installation in mobile homes,
recreation vehicles, or outdoors.
Before installing the furnace, refer to the current edition of the
National NFGC. Canadian installations must be installed in
accordance with NSCNGPIC and all authorities having jurisdic-
tion. For further information, the National Fuel Gas Code is
available from National Fire Protection Association Inc., Battery-
march Park, Quincy, MA 02269, American Gas Association, 1515
Wilson Boulevard, Arlington, VA 22209, or from Literature
Distribution.
TABLE 2—DIMENSIONS (IN.)
UNIT SIZE
A
D
E
VENT CONN SHIP. WT
024071
14-3/16 12-9/16 12-11/16
4
135
036071
14-3/16 12-9/16 12-11/16
4
139
036091
17-1/2
15-7/8
16
4
146
048091
17-1/2
15-7/8
16
4
146
048110
17-1/2
15-7/8
16
4
163
060110
21
19-3/8
19-1/2
4
171
060135
24-1/2
22-7/8
23
5
182
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.
Reference should also be made to the regulations of the serving gas
supplier and the local building, heating, plumbing, or other codes
in effect in the area in which the installation is made. In the
absence of local codes, the installation must conform with the
NFGC.
This furnace is designed for a minimum continuous return-air
temperature of 60°F db or intermittent operation down to 55°F db
such as when used with a night setback thermostat. Return-air
temperature must not exceed a maximum of 85°F db.
For accessory installation details, refer to the applicable installa-
tion literature.
NOTE:
Remove all shipping brackets and materials before oper-
ating the furnace.
Fig. 1—Dimensional Drawing
A88324
—2—
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