Fig. 13 — typical single-phase wiring diagram – Carrier 48NLT User Manual
Page 14
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r
■@-RED-
SIN6LE STA6E HEAT K SIN6LE STAGE COOL
THERMOSTAT CTYPJ
BUC
KED -
ORN -
TRAN
BRN —
^ ®©<£>
® PCI ®
® I—I I—3
®
<!> 0 <»> 0 0
r^Pi'
♦-0
IGN o
PS
SO
o
ALS1 -
ALS2 -
C
-
CAP.
-
1,2
COMP
EG
GV
IFM
IFR1
IFR2
IM
IR
IGN
LS
Auxiliary Limit Switch (SPST)
NC (Blower)
Auxiliary Limit Switch (SPST)
NC (Rollout)
Contactor
Capacitors (Run)
Compressor
Equipment Ground
Gas Valve
Indoor Fan Motor
Indoor Fan Relay
(SPOT) NO (Cooling)
Indoor Fan Relay
(SPST) NO (Heating)
Inducer Motor
Inducer Relay (DPST) NO
Ignitor
Limit Switch (SPST) NC
LEGEND
MV
OFM
P
PCI
PC2
PI
PS
PV
ST
TRANS
Mam Valve
Outdoor Fan Motor
Pilot (Flame Sensing)
Printed Circuit Board (Blower)
Printed Circuit Board (Inducer)
Pilot Ignitor
Pressure Switch (SPOT) NC
Pilot Valve
Start Thermistor (024-042 only)
Transformer
Field High-Voltage Wiring
Factory High-Voltage Wiring
Factory Low-Voltage Wiring
Field Low-Voltage Wiring
Marked Connection
Unmarked Connection
internally Connected or
^ Wirenut
NOTES:
1. 230-v operation as shown. For 208-v operation, reverse red and orn leads of transformer.
2. Symbols are an electrical representation only.
3. If any of the original wire, as supplied, must be replaced, use minimum 105° C wiring
material.
4. Use copper wire only for field power supply leads.
5. Compressor and fan motors provided with inherent thermal protection.
e
o
Fig. 13 — Typical Single-Phase Wiring Diagram