Carrier 59SC6A - Electrical Connections

59SC6A: 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.
25
Gas Pipe Grommet
For direct vent (2-pipe) applications, the opening for the gas pipe must
be sealed to prevent air leakage. Remove the knockout or plug, install
the grommet in the hole, then insert the gas pipe. The grommet is
included in the loose parts bag. See Fig. 30.
ELECTRICAL CONNECTIONS
See Fig. 33 for field wiring diagram showing typical field 115-V wiring.
Check all factory and field electrical connections for tightness.
Field-supplied wiring shall conform with the limitations of 63_F (35_C)
rise.
A190079
Fig. 33 – Typical Field Wiring Diagram
A190279
Fig. 34 – Field-Supplied External Electrical Box on Furnace Casing
Table 11 – Electrical Data
CAUTION
!
FURNACE MAY NOT OPERATE HAZARD
Failure to follow this caution may result in intermittent furnace
operation.
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.
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings could result in dangerous operation,
serious injury, death or property damage.
Improper servicing could result in dangerous operation, serious injury,
death or property damage.
- Before servicing, disconnect all electrical power to furnace.
- When servicing controls, label all wires prior to disconnection.
Reconnect wires correctly.
- Verify proper operation after servicing.
- Always reinstall access doors after completing service and
maintenance.
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Blower door switch opens 115-V power to control. No component
operation can occur. Do not bypass or close switch with blower door
removed.
WARNING
!
ELECTRICAL SHOCK AND FIRE HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
The cabinet MUST have an uninterrupted or unbroken ground
according to NEC NFPA 70 or local codes to minimize personal injury
if an electrical fault should occur. In Canada, refer to Canadian
Electrical Code CSA C22.1. 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.
WARNING
!
FIRE HAZARD
Failure to follow this warning could result in personal injury, death, or
property damage.
Do not connect aluminum wire between disconnect switch and furnace.
Use only copper wire. See Fig. 34.
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
T
R
O
L
R
G
COM
WCR GY
GND
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
sa
m
e
type
o
r
equ
iv
a
l
e
n
t
wir
e
.
W
Y
GND
THERMOSTAT
TERMINALS
1.
2.
3.
COPPER
WIRE ONLY
ELECTRIC
DISCONNECT
SWITCH
ALUMINUM
WIRE
FURNACE
SIZE
VOLTS-
HERTZ-
PHASE
OPERATING VOLTAGE
RANGE
*
*. Permissible limits of the voltage range at which the unit operates satisfactorily.
MAXIMUM
UNIT
AMPS
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.
MINIMUM
WIRE SIZE
AWG
MAXIMUM
WIRE LENGTH
FT (M)
‡
‡. Length shown is as measured one way along wire path between furnace and service panel for maximum 2 percent voltage drop.
MAXIMUM FUSE
OR CKT BKR
AMPS
**
**. Time-delay type is recommended
Maximum Minimum
026M14--10 115-60-1 127 104 5.2 7.5 14 50 (15.2) 15
040M14--10 115-60-1 127 104 7.0 9.7 14 38 (11.7) 15
040M17--12 115-60-1 127 104 7.4 10.2 14 36 (11.1) 15
060M14--12 115-60-1 127 104 7.1 9.8 14 38 (11.5) 15
060M17--16 115-60-1 127 104 10.1 13.6 14 27 (8.3) 15
080M17--16 115-60-1 127 104 10.0 13.4 14 27 (8.4) 15
080M21--20 115-60-1 127 104 13.1 17.3 12 33 (10.1) 20
100M21--20 115-60-1 127 104 12.6 16.7 12 34 (10.5) 20
100M21--22 115-60-1 127 104 12.5 16.5 12 34 (10.6) 20
120M24--22 115-60-1 127 104 13.2 17.4 12 33 (10.0) 20
140M24--22 115-60-1 127 104 12.6 16.7 12 34 (10.5) 20