Carrier 58DRC User Manual
58DRC
HEATING & COOLING
Counterflow Gas-Fired Furnaces
Installation, Start-Up and Service Instructions
for Sizes 045-095
NOTE. Energy Guide tag may be removed
from furnace when installation is complete.
INTRODUCTION
Before installing the furnace, refer to Procedures for
Gas-Fired 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, NFPA54-1984/ANSI Z223.1-
1984.
Each furnace is shipped from the factory completely
assembled with multispeed direct-drive blower and wired
ready for counterflow indoor heating installation only.
All sizes feature a printed-circuit board control center
with easy-to-read, low-voltage terminal strip to ensure
proper connections.
A CAUTION
Do not install furnace in a corrosive or contami
nated atmosphere. Make sure all combustion and
circulating air requirements listed in Procedures
for Gas-Fired Furnaces are adhered to, in addition
to all local codes and ordinances.
G
efficiency
RATING
CGRTIFIED
ama
A CAUTION
Do not block openings in front of furnace or on
furnace top along side vent pipe. These openings pro
vide air for combustion and ventilation. Never store
anything on or in contact with furnace, such as:
aerosol cans, rags, brooms and mops, cleaning tools
and aids, powders, bleaches, waxes, plastic items,
gasoline, kerosene, lighter fluids, cleaning fluids,
thinners, painting compounds or paper products.
The design of the counterflow gas-fired furnace is
A.G.A certified for installation on combustible flooring
(with optional floor base), in alcoves, basements, closets
or utility rooms. This furnace line is not A.G.A. certified
for installation in a mobile home, recreation vehicle, or
outdoors
Installation Procedures: Page
Inspection..........................................................................*
Location, Ventilation and Air
for Combustion................................................................*
Gas Piping.........................................................................*
Venting..............................................................................*
Supply-Air Plenum Installation.........................................1
Electrical Connections.......................................................3
Sequence of Operation.......................................................4
Filter Arrangement
Start-Up and Adjustment...................................................6
Care and Maintenance.......................................................6
*Refer to appropiiate sections in Pioceduies foi Gas-Fired Furnaces
packed with this furnace
For accessory installation details, refer to applicable
installation literature.
............................................................
5
Fig. 1 — Model 58DRC
Table 1 — Clearances (in.)
SIZE 58DRC
Single-Wall Vent 1
Type-BI Double-Wall Vent
Back
Top of Plenum 1
Single-Wall
.........
.. Type-B1 Double-Wall 1
„ Combustion Air
’ Service
ALL
1
0
6
6
30
NOTE. Some furnaces are shipped with paper across the
supply-air outlet. Remove the paper before installing
furnace.
INSTALLATION
Supply-Air Plenum Installation
INSTALLATION ON A CONCRETE SLAB
1 See Fig. 2 for dimensions and location of supply air
opening in furnace bottom
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
Bookll 14 PC101 Catalog No 535-843 PrintedinUSA Form58DRC-1SI Pg 1 7-85 Replaces:New
Tab |6al8a
For replacement items use Carrier Specified Parts
58DRC
HEATING & COOLING
Table 2 — Dimensions (in.)
SIZE
58DRC
045
065
080
095
A B
17'/2 15% 16 4
17'/2 15% 16
21
24'/2 22’%e 23 6
19% 19'/2
C
VENT
5
5
2. Construct hole in floor per dimensions in Fig. 3 and
Table 4.
3. Place plenum and furnace as shown in Fig. 4.
Counterflow Gas-Fired Furnaces
FURNACE
-fc-SHEET METAL
PLENUM
Fig. 4 — Furnace on a Concrete Slab
Table 4 — Floor Opening Dimensions (in.)
SIZE 58DRC
045, 065
080 19%
095 23'/i6
INSTALLATION ON A COMBUSTIBLE FLOOR
I. Read Installation Instructions packaged with com
bustible floor base. See Fig. 5.
Cut and frame hole in floor per dimensions in Fig. 3
2.
and Table 4. If this requires cutting a floor joist, tie
ends of cut joist into adjacent joists so that proper floor
support is maintained.
Assemble and install combustible floor base per in
3.
structions packaged with base.
When completed, combustible floor base, plenum,
and furnace (or coil casing when used) should be
installed as shown in Fig. 6.
A
16%6
HOLE IN FLOOR
Fig. 3 — Floor Opening
Table 3 — Ratings and Performance*
SIZE
58DRC
045CB 60,000
065CB 80,000
080CB 100,000
095DB 120,000
PSC — Permanent Split Capacitor
‘Ratings are certified for altitudes to 2000 feet For elevation above 2000 ft, reduce ratings 4% for
each 1000 ft above sea level
tCFM at #3 speed tap
|CFM at #1 speed tap
“Preliminary data.
Bookll 14 PC 101 Catalog No 535-843 PrintedinUSA Form58DRC-1SI Pg2 7-85 Replaces: New
Tab I6al8a
INPUT
BTUH
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
HEATING
CAPACITY
(BTUH)**
45,000 30-60
65,000 30-60
80,000
95,000
TEMP
RISE
RANGE (F)
40-70
40-70
For replacement items use Carrier Specified Parts
HEATING!
Ext Static
Pressure
(in. wg)
12
12
15
20
CFM
1080 0 5 1206 'h
1240 0.5 1630
1165 0 5 1620
1830 0.5 2075
COOLING!
Ext Static
Pressure
(in. wg)
CFM
MOTOR HP
(PSC)
'/2 170
'/2 187
'/2 227
APPROX
SHIP. WT
(lb)
157
58DRC
HEATING & COOLING
Fig. 6
Furnace, Plenum, and Base Installed
Counterflow Gas-Fired Furnaces
on a Combustible Floor
Electrical Connections
LINE-VOLTAGE WIRING
NOTE. For additional information, refer to Procedures
for Gas-Fired Furnaces (packaged with the equipment)
IMPORTANT: Before proceeding with the electrical
connections, make certain that voltage, frequency,
and phase correspond to that specified on the unit
rating plate. Also, be sure that the service provided
by the utility company is sufficient to handle the addi
tional load imposed by this equipment.
A CAUTION
Do not connect aluminum wire between disconnect
switch and furnace.
See Fig. 7 for wiring diagram showing the proper field
high- and low-voltage wiring Make all electrical connec
tions in accordance with the National Electrical Code
ANSI/ NFPA 70-1984 and any local codes or ordinances
that might apply.
Use a separate fused branch electrical circuit for this
furnace. A disconnecting means must be located within
sight from, and readily accessible from the furnace. In
some areas, the unit door switch may qualify as the dis
connecting means
A WARNING
The furnace must be electrically grounded in accord
ance with local codes, the National Electric Code,
ANSI/ NFPA 70-1984 Do not use gas piping as an
electrical ground.
If line voltage wiring to the unit is encased in a nonmetallic sheath, connect the incoming ground wire to the
grounding wire inside the furnace junction box. If
metallic conduit is used, it will serve as the ground.
LOW-VOLTAGE WIRING — Make field low-voltage
connections at the low-voltage terminal strip See
Fig 7.
NOTE: Use AWG no. 18 color-coded copper thermostat
wire for lengths up to 100 feet Above 100 ft, use AWG
no. 16 wire
IMPORTANT The thermostat heat anticipator
must be set to match the amp draw of the gas valve
and electrical components in the R-W circuit.
Accurate amp draw readings can be obtained at
thermostat subbase terminals R and W. Figure 8
illustrates an easy method for obtaining the actual
amp draw.
*Some thermostat subbases require a jumper wire between subbase terminals R and 4 for --------------------------------------------------
proper operation in heating and cooling applications that use a single transformer
NOTE If any of the original wire as supplied must be replaced, use same typeor equivalent wire
--------------------------------------------
-----------
-Field Low-Voltage Wiring
-
■ Field High-Voltage Wiring
Factory Low-Voltage Wiring
Fig. 7 — Heating and Cooling Application Wiring Diagram
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Bookj 1 |4 PC101 Catalog No 535-843 PrintedinUSA Foi m 58DRC-1SI Pg 3 7-85 Replaces New
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