58DX
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58DX
HEATING A COOLING
Deluxe Downflow Condensing Furnaces
Installation, Start-Up and Service Instructions
For Sizes 040-100
NOTE: Read these instructions carefully and completely
before installing the furnace.
INTRODUCTION
Before installing the furnace, refer to “Procedure for Down
flow Condensing Furnaces” (packaged with the equipment)
for information concerning combustion, venting, piping, and
other standard installation practices. Further reference is
made to the current edition of the National Fuel Gas Code
NFPA 54-1988-1/ANSI Z223.1-1988.
>• Reference should eJso be made to the regulations of the
serving gas supplier and the local building, heating, plumb
ing, or other codes in effect in the area in which the installa
tion is made.
SAFETY CONSIDERATIONS
Installation emd servicing of heating equipment can be haz
ardous due to gas and electrical components. Only treiined
and qualified personnel should install, repair, or service
heating equipment.
Untrained personnel cem perform basic maintenance func
tions such as cleaning and replacing air filters. AU other
operations must be performed by trained service personnel.
When working on heating equipment, observe precautions
in the literature, tags, and labels attached to or shipped
with the unit and other safety precautions that may apply.
FoUow aU safety codes, including NFPA No. 54/ANSI
Z223.1-1988, National Fuel Gas Code, Wear safety glasses
and work gloves. Have fire extinguisher available during
startup and adjustment procedures and service call.
Recognize safety information. This is the safety-alert sym
bol A. When you see this symbol on the furnace and in
instructions or manuals, be alert to the potential for per
sonal injury.
Understand the signal word—DANGER, WARNING or
CAUTION. These words are used with the safety-alert sym
bol. DANGER identifies the most serious hazards which
will result in severe personal injury or death. WARNING,
on the other hand 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.
Each Model 58DX is shipped from the factory completely
assembled with a multispeed direct-drive blower and wired
ready for an indoor heating installation. The furnace fea
tures a blower control center with easy-to-read, 24-volt ter
minal strip to ensure proper connections.
The output capacity and any representations of efficiency
for this furnace aie based on standard Department of
Energy test procedures.
The installed operation may vary, depending on installation,
weather, and other factors.
The design of the downflow gas-fired furnace is A.G.A. cer
tified for installation on noncombustible flooring. The fur
nace may be installed on combustible flooring when
installed with the accessory downflow subbase. This furnace
is designed for installation in alcoves, attics, basements,
closets, utility rooms, and manufactured housing (mobile
homes). This furnace line is not A.G.A. certified for installa
tion in a recreation vehicle or outdoors.
■ EFFICIENCY
■ RATING
I CERTIFIED
lama
Fig. 1 —Model 58DX
A WARNING
Improper installation, adjustment, alteration, service,
maintenance, or use can cause carbon monoxide poison
ing, explosion, fire, electrical shock, or other conditions
which may cause personeJ injury 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 kits or accessories when modi
fying this product. A failure to adhere to this warning
can cause electrical shock, fire, personal injury, or
death.
Series
A87414
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book] 1 I 4 PC 101 Catalog No. 535-887 Printed in U.S.A. Form 58DX-13Si Pg 1 6-89 Repiaces; 58DX-11Si
Tab I6al8a
HOLE IN
FLOOR
3
Fig. 2—Floor Opening for Concrete Slab
Insteillation requires the following;
*1. Inspection
*11. Furnace Location
*III. Gas Piping
*IV. Combustion-Air and Vent Piping
*V. Condensate Piping
VI. Supply-Air Plenum Installation
VII. Electrical
VIII. Sequence of Operation
IX. Fdter
*X. Startup and Adjustment
XI. Care and Maintenance
*For these sections (or installation steps), refer to the appro
priate sections of “Procedures for Downflow Condensing
Furnaces” booklet packaged with this unit.
For accessory instedlation details, refer to the applicable
installation hterature.
NOTE: Remove all shipping brackets and materials before
operating the furnace.
VI. SUPPLY-AIR PLENUM INSTALLATION
A. Installation on a concrete slab
1. See Fig. 5 for dimensions and location of supply-air
opening in furnace bottom.
2. Construct hole in floor per dimensions in Fig. 2 and
Table 1.
3. Place plenum and furnace as shown in Fig. 3.
Fig. 4—Furnace, Plenum, and
Base Installed on a Combustible Floor
Table 1—Opening Dimensions
Furnace A
Width
171/2
21
241/2
*These dimensions appiy when a Model 28RC or 28RD Evaporator Coil
casing is to be installed.
16 1/8
19 5/8 19 5/8
231/8
Furnace
19 5/8 19 7/16
19 5/8 19 7/16
B. Installation on a combustible floor
B
Furnace & Coil*
19 7/16
1. Read Installation Instructions packaged with down
flow subbase.
2. Cut and frame hole in floor per dimensions in Installa
tion Instructions packaged with downflow subbase. If
this requires cutting of a floor joint, tie ends of cut
joist into adjacent joists so that proper floor support
wUl be maintained.
Table 2—Dimensions (In Inches)
Size A D E
040 171/2 15 7/8 16
060
080 21 19 3/8 191/2
100 24 1/2 22 7/8 23
171/2 15 7/8 . 16
WA
A87297
Fig. 5—Dimensional Drawing
2
------------------
FIELD 24-VOLT WIRING
TERMINAL BLOCK
Fig. 6—Heating and Cooiing Application Wiring Diagram
3. Assemble and install downflow subbase per instruc
tions packaged with subbase.
4. When completed, downflow subbase, plenum, and fur
nace (or coil casing when used) should be installed as
shown in Fig. 4.
VII. ELECTRICAL CONNECTIONS
A. 115-Volt Wiring
iM PORT ANT: Before proceeding with the electrical connec
tions, make certain that voltage, frequency, and phase cor
respond to that specified on the unit rating plate and Table
3. Also, check to be sure that the service provided by the
utility is sufficient to handle the load imposed by this equip
ment. Refer to Table 3 for the equipment electrical
specifications.
Table 3—Electrical Data
Volts-
SIZE Hertz- Voltage Range
Phase Max* Min*
040 115—60—1 127 104
060
115—60—1
080 115—60—1 127 104
100 115—60—1 127 104
»Permissible limits of the voltage range at which the unit will operate sat
isfactorily.
fTime-delay fuse is recommended.
^Length shown is as measured one way along wire path between unit
and service panel for maximum 2% voltage drop.
Operating
127 104
Max. Min.
Unit Wire Length HACR-Type
Amps Size Feett Ckt Bkr Amps
8.7 14 41 15
8.2 14 42 15
10.1 14 36 15
13.6 12 42 20
Max. Wire
Max. Fusef or
A CAUTION
Do not connect aluminum wire between the disconnect
switch and the furnace.
AS SUPPLIED, MUST BE REPLACED, USE
SAME TYPE OR EQUIVALENT WIRE.
A87502
See Fig. 6 for a wiring diagram showing the proper field
115- and 24-volt wiring. Be sure field wiring complies with
the National Electric Code and any local codes or ordnances
that may apply. Voltage to the furnace must be within the
limits shown in Table 3. Contact your local power company
for correction of improper voltage.
NOTE; Operation of unit on improper line voltage consti
tutes abuse and could affect unit reliability. Do not install
the furnace in a system where voltage may fluctuate above
or below permissible limits.
Use a separate fused branch electrical circuit containing the
properly sized time-delay fuse or HACR-type circuit breaker
for this furnace. See Table 3 for fuse and wire specifications.
A disconnecting means must be located within sight of, and
readily accessible to, the furnace. The blower door switch
may be acceptable in some areas as a disconnecting means.
Line voltage must enter the auxiliary J-box on the righthand side of the furnace.
A WARNING
The cabinet must have an uninterrupted or unbroken
ground according to National Electrical Code. ANSI/
NFPA 70-1987, or local codes to minimize personal
injury if an electrical fault should occur. This may con
sist of electrical wire or conduit approved for electrical
ground when installed in accordance with existing elec
trical codes. Do not use gas piping as an electrical
ground. A failure to adhere to this warning can result in
an electrical shock, fire, or death.
Table 4—Ratings and Performance
Indoor
SIZE
040
060
080
100 110,000 101,000 100,000 40—70
*Gas input ratings are certified for elevations to 2000 ft. For elevations above 2000 feet, reduce ratings 4% for each 1000 ft above sea level.
tDetermined by U.S. Government tests.
»»Isolated combustion system; GAMA non-weatherized.
input
Btuh*
44,000
66,000 60,000
88,000 81,000 80,000 40—70
Capacity
Btuht
40,000 40,000 20—50 0.10 1335
ICS»*
Capacity
Btuht
60,000
Temperature
Rise
Range
40—70
Heating Cooling
Ext Static
Pressure
0.12 1275
0.15 1590
0.20 2000
Cfm
Ext Static
Pressure
0.5 1265 1/3 PSC
0.5 1170 1/3 PSC
0.5 1565 1/2 PSC
0.5 2035
Cfm
HP & Type
Motor
3/4 PSC 241
Approx
Shipping
Weight
179
187
202
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