Dimensional Drawing - Carrier 58DFA Installation, Start-Up, And Operating Instructions Manual
120 series downflow induced-combustion sizes 071-135
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This furnace must be installed in the downflow configuration
ONLY. Improper installation, adjustment, 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 sup-
plier, or your distributor or branch for information or assis-
tance. The qualified installer or agency must use only
factory-authorized and listed kits or accessories when modi-
fying 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.
Fig. 1—Dimensional Drawing
→
UNIT SIZE
071-08
071-12
091-12
091-16
110-16
110-20
135-20
Application of this furnace should be indoors 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 premature 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.
2
Table 2—Dimensions (In.)
A
D
E
VENT CONN SHIP. WT
14-3/16 12-9/16 12-11/16
14-3/16 12-9/16 12-11/16
17-1/2
15-7/8
16
17-1/2
15-7/8
16
17-1/2
15-7/8
16
21
19-3/8
19-1/2
24-1/2
22-7/8
23
A88324
4
135
4
139
4
146
4
146
4
163
4
171
5
182
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