TYPICAL WIRING DIAGRAM NOTES
1.All field wiring to be accomplished following city, local and/or national codes in effect at time of installation of this unit.
2.Caution: Label all wires prior to disconnection when ser- vicing controls. Wiring errors can cause improper and dangerous operation if any of the wire as supplied with this unit must be removed it must be replaced with type 105°C, 600V wire or equivalent clearly renumbered for identification. Verify proper operation after servicing.
3.Motors are inherently protected.
4.See unit nameplate for maximum fuse size and minimum circuit ampacity.
5.Select indoor blower cooling speed from unit wiring dia- gram Table 1. Heating speed is preset at the factory.
6.If both LR and ASCT are present, wire 801/BL and 805/ BL are connected to
7.Shunt contact also used with crankcase heater. (Optional).
Open all disconnects before servicing this unit.
|
| LEGEND : |
ALS | AUXILLARY LIMIT SWITCH | |
ASCT | ||
|
| (OPTIONAL ACCESSORY) |
COMPR | COMPRESSOR | |
EAC | ELECTRIC AIR CLEANER RELAY OUTPUT | |
|
| ON CONTROL BOARD, |
FS | FREEZESTAT SWITCH (OPTIONAL ACCESSORY) | |
|
| OPEN @ 250 F |
HP | HIGH PRESSURE SWITCH (OPTIONAL | |
|
| ACCESSORY) OPENS @ 380 PSIG |
HSP | HOT SURFACE TO PILOT | |
HUM | HUMIDIFER RELAY OUTPUT ON CONTROL | |
|
| BOARD, |
LP | LOW PRESSURE SWITCH (OPTIONAL ACCESSORY) | |
|
| OPEN @ 7 PSIG |
LR | LOCK OUT RELAY (OPTIONAL ACCESSORY) | |
LS | LIMIT SWITCH | |
M1 | CONTACTOR, COMPR. & O.D.FAN | |
M2 | CONTACTOR, DRAFT INDUCER MOTOR | |
PS | PRESSURE SWITCH MAKES @ | |
|
| .193 IWC NOM. (.33 IWC MAX.) |
RC1/RC2 | COMPR. START & OUTDOOR FAN RUN CAPACITOR | |
RS | ROLL OUT SWITCH | |
T1 | TRANSFORMER, 24V, 40VA | |
T2 | TRANSFORMER, 480/240 VOLT | |
TB2 | TERMINAL BLOCK, 24V, I.D. | |
|
| MOTOR "SPEED" CONNECTION |
|
| IDENTIFIED TERMINAL ON CAPACITOR |
|
| ROOM THERMOSTAT 24V CONNECTIONS |
|
| TB1 ON CONTROL BOARD |
|
| FACTORY WIRING AND DEVICES |
|
| |
|
| OPTIONAL WIRING AND DEVICES |
|
| FIELD WIRING |
|
| DNP LEGEND WIRING DIA. |
|
|
|
FIGURE 21 - TYPICAL WIRING DIAGRAM LEGEND
32 | Unitary Products Group |
