115-V Wiring; J-Box Relocation - Carrier 58CTA Installation And Service Instructions Manual

BLK BLK
WHT WHT
GND
115-VOLT FIELD-
SUPPLIED
FUSED
DISCONNECT
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in serious injury,
death, or property damage.
The cabinet MUST have an uninterrupted or unbroken ground
according to NEC ANSI/NFPA 70-2002 and Canadian Elec-
trical Code CSA C22.1 or local codes to minimize personal
injury if an electrical fault should occur. This may consist of
electrical wire, conduit approved for electrical ground or a
listed, grounded power cord (where permitted by local code)
when installed in accordance with existing electrical codes.
Refer to the power cord manufacturer's ratings for proper
wire gauge. Do not use gas piping as an electrical ground.
→
FURNACE MAY NOT OPERATE
Failure to follow this caution may result in furnace operation
stopping and water pipes freezing during cold weather.
Furnace control must be grounded for proper operation or else
control will lock out. Control must remain grounded through
green/yellow wire routed to gas valve and manifold bracket
screw.

115-V WIRING

Verify that the voltage, frequency, and phase correspond to that
specified on unit rating plate. Also, check to be sure that service
provided by utility is sufficient to handle load imposed by this
equipment. Refer to rating plate or Table 7 for equipment electrical
specifications.
U.S. Installations: Make all electrical connections in accordance
with National Electrical Code (NEC) ANSI/NFPA 70-2002 and
any local codes or ordinances that might apply.
Canadian Installations: Make all electrical connections in accor-
dance with Canadian Electrical Code CSA C22.1 or authorities
having jurisdiction.
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
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.
→
FIRE HAZARD
Failure to follow this warning could result in serious injury,
death, or property damage.
Do not connect aluminum wire between disconnect switch
and furnace. Use only copper wire.
Use a separate branch electrical circuit with a properly sized fuse
or circuit breaker for this furnace. See Table 7 for wire size and
fuse specifications. A readily accessible means of electrical
disconnect must be located within sight of the furnace.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control LED status indicator light will flash
rapidly and furnace will NOT operate.

J-BOX RELOCATION

NOTE: If factory location of J-Box is acceptable, go to next
section (ELECTRICAL CONNECTION TO J-BOX).
NOTE: On 14" wide casing models, the J-Box shall not be
relocated to other side of furnace casing when the vent pipe is
routed within the casing.
1. Remove and save two screws holding J-Box. (See Fig. 23.)
→
NOTE: The J-Box cover need not be removed from the J-Box in
order to move the J-Box. Do NOT remove green ground screw
inside J-Box. The ground screw is not threaded into the casing
flange and can be lifted out of the clearance hole in casing while
swinging the front edge of the J-box outboard of the casing.
2. Cut wire tie on loop in furnace wires attached to J-Box.
3. Move J-Box to desired location.
4. Fasten J-Box to casing with the two screws removed in Step
1.
5. Route J-Box wires within furnace away from sharp edges,
rotating parts, and hot surfaces.
20
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
A95236