TYPICAL WIRING DIAGRAM LEGEND
CB | CIRCUIT BREAKER 24V, 3 AMP |
CCH | CRANKCASE HEATER (OPTIONAL) |
COMPR | COMPRESSOR |
DS | DEFROST SENSOR, CLOSES @ 31˚F, OPENS @ 55˚F. |
F1 F2 F3 | FUSES, LINE VOLTAGE - 60 AMP (10, 15, 20 & 25 KW ELEC HEAT) |
F4 F5 F6 | FUSES, LINE VOLTAGE - 30 AMP (10, 15, 20 & 25 KW ELEC HEAT) |
F7 F8 F9 | FUSES, LINE VOLTAGE - 30 AMP (20, 25 KW ELEC HEAT) |
F24 | FUSE 24V SECONDARY, 5 AMP |
FS | FREEZESTAT SWITCH (OPTIONAL ACCESSORY) OPEN @ 26˚ F |
HP | HIGH PRESSURE SWITCH (OPTIONAL ACCESSORY) OPENS @ 280 PSIG |
HTR 1 | ELECTRIC HEATER (OPT. ACCSSRY: ALL KW ELEC HEAT) |
HTR 2 | ELECTRIC HEATER (OPT. ACCSSRY: 7.5, 10, 15, 20 & 25 KW ELEC HEAT) |
HTR 3 | ELECTRIC HEATER (OPT. ACCSSRY: 20 & 25 KW ELEC HEAT) |
HTR 4 | ELECTRIC HEATER (OPT. ACCSSRY: 15, 20 & 25 KW ELEC HEAT) |
HTR 5 | ELECTRIC HEATER (OPT. ACCSSRY: 20 & 25 KW ELEC HEAT) |
HTR 6 | ELECTRIC HEATER (OPT. ACCSSRY: 20 & 25 KW ELEC HEAT) |
K1 | RELAY INDOOR FAN MOTOR |
K2 | RELAY ELECTRIC HEATER |
K3 | RELAY ELECTRIC HEATER, 24 VDC COIL |
K7 | RELAY LIMIT TRIP, 25 VDC COIL |
LP | LOW PRESSURE SWITCH (OPTIONAL ACCESSORY) OPEN @ 7 PSIG |
LS | LIMIT SWITCH, ELECTRIC HEAT (PART OF ELEC HEAT ACCESSORY) |
M1 | CONTACTOR, COMPRESSOR & OUTDOOR FAN |
M2 | CONTACTOR, ELECTRIC HEAT, 230V COIL |
M3 | CONTACTOR, ELECTRIC HEAT, 230V COIL |
PTCR | START ASSIST (OPTIONAL DEVICE) |
RC1/RC2 | COMPRESSOR START & OUTDOOR FAN RUN CAPACITOR |
RC1 | COMPRESSOR START CAPACITOR (ALTERNATE) |
RC2 | OUTDOOR FAN RUN CAPACITOR (ALTERNATE) |
RC3 | INDOOR FAN RUN CAPACITOR |
RVS | REVERSING VALVE SOLENOID |
S2/P2 | SOCKET/PLUG CONNECTION ON FAN CONTROL BOARD, LOW VOLTAGE |
S3/P3 | SOCKET/PLUG CONNECTION ON FAN CONTROL BOARD, LINE VOLTAGE |
S4/P4 | SOCKET/PLUG CONNECTION ON ID FAN MOTOR, 24V |
S3/P3 | SOCKET/PLUG CONNECTION ON ID FAN MOTOR, 230V |
T1 | TRANSFORMER, 24V, 40 VA |
TB2 | TERMINAL BLOCK ECM MOTOR "SPEED" CONNECTIONS |
| IDENTIFIED TERMINAL ON RUN CAPACITOR |
| ROOM THERMOSTAT 24V CONNECTIONS |
| TB1 ON FAN/ELEC HEAT CONTROL BOARD |
| FACTORY WIRING AND DEVICES |
| OPTIONAL WIRING AND DEVICES |
| FIELD WIRING |
TYPICAL WIRING DIAGRAM NOTES
14 | Unitary Products Group |