Carrier 58SP0A Installation, Start-Up, Operating And Service And Maintenance Instructions Download

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58SP0A/58SP1A: Installation, Start–Up, Operating and Service and Maintenance Instructions

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

A190079

Fig. 25 – Field Wiring Diagram

Electrical Connection to J-Box

Electrical Box on Furnace Casing Side

A190278

Fig. 26 – Field-Supplied Electrical Box on Furnace Casing

1. Select and remove a hole knockout in the casing where the

electrical box is to be installed.

NOTE:

Check that duct on side of furnace will not interfere with

installed electrical box.

2. Remove the desired electrical box hole knockout and position the

hole in the electrical box over the hole in the furnace casing.

3. Fasten the electrical box to casing by driving two field-supplied

screws from inside electrical box into casing steel.

4. Remove and save two screws holding J-Box, see

Fig. 24

5. Pull furnace power wires out of 1/2-in. (12 mm) diameter hole in

J-Box. Do not loosen wires from strain-relief wire-tie on outside of

J-Box.

6. Route furnace power wires through holes in casing and electrical

box and into electrical box.

7. Pull field power wires into electrical box.Remove cover from

furnace J-Box.

8. Route field ground wire through holes in electrical box and casing,

and into furnace J-Box.

9. Reattach furnace J-Box to furnace casing with screws removed in

Step 4.

10. Secure field ground wire to J-Box green ground screw.
11. Complete electrical box wiring and installation. Connect line

voltage leads, see

Fig. 26

. Use best practices (NEC in U.S. for wire

bushings, strain relief, etc.

12. Reinstall cover to J-Box. Do not pinch wires between cover and

bracket.

115-V FIELD-

SUPPLIED

DISCONNECT

AUXILIARY
J-BOX

24-V

TERMINAL

BLOCK

THREE-WIRE

HEATING-ONLY

FIVE WIRE

NOTE 1

NOTE 2

FIELD-SUPPLIED
DISCONNECT

CONDENSING
UNIT

TWO
WIRE

FURNACE

C
O
N

R
O

COM

GND

FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING

208/230- OR
460-V
THREE
PHASE

208/230-V
SINGLE
PHASE

BLOWER DOOR SWITCH

WHT

BLK

WHT

BLK

NOTES:

Connect Y-terminal in furnace as shown for proper blower operation.
Some thermostats require a "C" terminal connection as shown.
If any of the original wire, as supplied, must be replaced, use
same type or equivalent wire.

GND

THERMOSTAT
TERMINALS

1.
2.
3.

WARNING

FIRE OR ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury, death, or

property damage.

If field-supplied manual disconnect switch is to be mounted on furnace

casing side, select a location where a drill or fastener cannot damage

electrical or gas components.

GROUND

NEUTRAL

LINE VOLTAGE

Table 5 – Electrical Data

FURNACE SIZE

VOLTS - HERTZ

- PHASE

OPERATING VOLTAGE RANGE

*. Permissible limits of the voltage range at which the unit operates satisfactorily.

UNIT

AMPACITY

†

†. Unit ampacity = 125 percent of largest operating component’s full load amps plus 100 percent of all other potential operating components’ (EAC, humidifier, etc.) full load

amps.

MAX WIRE

LENGTH

FT (M)

‡

‡. Length shown is as measured 1 way along wire path between furnace and service panel for maximum 2 percent voltage drop.

MAX. FUSE OR

CKT. BKR

AMPS

**†

**. Time-delay type is recommended.

MIN. WIRE