Carrier 59SU5A Manual page 27

59SU5A: Installation, Start-up, Operating and Service Maintenance Instructions
Alternate Power Supplies
This furnace is designed to operate on utility generated power which has
a smooth sinusoidal waveform. If the furnace is to be operated on a
generator or other alternate power supply, the alternate power supply
must produce a smooth sinusoidal waveform for compatibility with the
BLOWER DOOR SWITCH
BLK
WHT
GND
115-V FIELD-
SUPPLIED
DISCONNECT
24-V THERMOSTAT
TERMINALS
3-AMP FUSE
TRANSFORMER 24-VAC
CONNECTIONS
STATUS LED LIGHT
HEATING SPEED
TAP
COOLING SPEED
TAP
FAN SPEED TAP
SPARE UNUSED
TAPS
(L2) NEUTRAL
CONNECTIONS
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
NOTE 2
W C
FIVE WIRE
THREE-WIRE
HEATING-ONLY
W
BLK
C
R
WHT
O
N
T
GND
R G
AUXILIARY
O
J-BOX
L COM
Y
24-V
TERMINAL
BLOCK
NOTES:
FURNACE
Fig. 40 – Typical Single-Stage Wiring Diagram
MODEL PLUG
J2 DEFEAT
CONNECTOR
JUMPER
PL4
J2
TEST/TWIN
115-VAC (PR) TRANSFORMER
PRIMARY
Fig. 41 – Example of Single Stage Furnace Control
furnace electronics. The alternate power supply must generate the same
voltage, phase, and frequency (Hz)
Power from an alternate power supply that is non-sinusoidal may
damage the furnace electronics or cause erratic operation.
Contact the alternate power supply manufacturer for specifications and
details.
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
THERMOSTAT
R G Y
TERMINALS
NOTE 1
CONDENSING
UNIT
TWO
WIRE
1. Connect Y-terminal in furnace as shown for proper blower 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.
J1 HEAT OFF-DELAY
JUMPER SELECT
HEAT OFF-DELAY
J1
BL
HUM
PR L1
115VAC
115-VAC (L1) LINE VOLTAGE HUM 115-VAC TERMINAL
CONNECTION (115-VAC EAC + HUM 1.0 AMP MAX.)
PL2 – (115-VAC) HOT SURFACE IGNITER &
INDUCER MOTOR CONNECTOR
27
(Table 13) or the furnace rating plate.
FIELD-SUPPLIED
DISCONNECT
208/230- OR
460-V
THREE
PHASE
208/230-V
SINGLE
PHASE
GND
PROGRAMMING FLASH PORTS
(FACTORY ONLY)
FACTORY RUN TEST PORT
(FACTORY ONLY)
HUMIDIFIER TERMINAL
(24-VAC 0.5 AMP MAX.)
PL3 - PRESSURE
TRANSDUCER INPUT
BOARD PART NUMBER
LOCATION
PL1 – LOW VOLTAGE MAIN HARNESS
CONNECTOR plus INDUCER PWM
EAC-1 TERMINAL
(115-VAC EAC + HUM 1.0 AMP MAX.)
115-VAC (BL) BLOWER MOTOR LINE
VOLTAGE CONNECTION
A190079
A190409