For Bx Cable Installation; 24-V Wiring - Carrier 58CVA Installation, Start-Up, Operating And Service And Maintenance Instructions

BLK BLK
WHT WHT
GND
115-VOLT FIELD-
SUPPLIED
FUSED
DISCONNECT
VOLTS-
UNIT SIZE HERTZ-
PHASE
070-12/036070 115-60-1
090-16/048090 115-60-1
110-22/066110 115-60-1
135-22/066135 115-60-1
155-22/066155 115-60-1
* Permissible limits of the voltage range at which the unit operates satisfactorily.
† Time-delay type is recommended.
‡ Length shown is as measured 1 way along wire path between unit and service panel for maximum 2 percent voltage drop.
Fig. 23—Relocating J-Box
3. Secure ground wire to green screw on J-Box bracket.
4. Connect line voltage leads as shown in Fig. 22.
NOTE 2
W
FIVE
WIRE
THREE-WIRE
HEATING-
ONLY
W2
COM
W/W1
NOTE 1
Y/Y2
JUNCTION
BOX
R
CONTROL
G
BOX
24-VOLT
TERMINAL
BLOCK
FURNACE
Fig. 22—Field Wiring Diagram
Table 5—Electrical Data
OPERATING
VOLTAGE RANGE
Maximum* Minimum*
127 104
127 104
127 104
127 104
127 104
TWO
1-STAGE
THERMOSTAT
C Y R G
TERMINALS
CONDENSING
UNIT
NOTES: 1. Connect Y/Y2-terminal as shown for proper operation.
2. Some thermostats require a "C" terminal connection as shown.
3. If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.
MAXIMUM MAXIMUM
UNIT AMPS WIRE LENGTH (FT)‡
9.0 30
9.6 29
15.1 29
14.9 30
15.0 29
J-BOX COVER INSTALLATION
1. Remove J-Box cover from blower access door on furnace and
reinstall blower access door screw.
2. Insert tab of J-Box cover into slot of J-Box bracket.
3. Fold tab on J-Box bracket with pliers.
4. Secure J-Box cover to bracket with screw provided.
5. Remove U-shaped cut-out from outer door to clear J-box.
If manual disconnect switch is to be mounted on furnace,
select a location where a drill or fastener will not contact
electrical or gas components.

24-V WIRING

A02099
Make field 24-v connections at the 24-v terminal strip. (See Fig.
32.) Connect terminal Y/Y2 as shown in Fig. 22 or Fig. 24-31 for
proper cooling operation. Use only AWG No. 18, color-coded,
copper thermostat wire.
The 24-v circuit contains an automotive-type, 3-amp fuse located
on the control. Any direct shorts during installation, service, or
16
FIELD 24-VOLT WIRING
FIELD 115-, 208/230-, 460-VOLT WIRING
FACTORY 24-VOLT WIRING
FACTORY 115-VOLT WIRING
FIELD-SUPPLIED
FUSED DISCONNECT
208/230- OR
460-VOLT
THREE
PHASE
208/230-
VOLT
SINGLE
PHASE
GND
MAXIMUM
FUSE OR CKT BKR
AMPS†
15
15
20
20
20
A95236
MINIMUM
WIRE GAGE
14
14
12
12
12