TYPICAL POWER WIRING
REFER TO THE ELECTRICAL DATA
TABLES TO SIZE THE DISCONNECT
SWITCH, OVERCURRENT PROTEC-
TION AND WIRING.
TYPICAL CONTROL WIRING
COOLING / HEATING (24 VOLT THERMOSTAT)
THERMOSTAT1
TERMINALS
|
| UNIT TERMINAL |
|
| RH | STRIP TB1 |
|
ADD |
|
| |
|
|
| |
JUMPER | RC | R |
|
| Y | Y1 | 24 VOLT |
|
|
| |
|
|
| TRANSFORMER |
|
| Y2 |
|
WW1
W2
GG
C
124 VOLT THERMOSTAT 2ET07701024. TO CONTROL THE ECONOMIZER ON THE SECOND STAGE COOLING OR TO HAVE AN ELECTRIC HEAT ACCESSORY WITH TWO STAGES OF HEAT, USE THERMOSTAT 2TH0471024.
COOLING / HEATING (ELECTRONIC THERMOSTAT)
MULTI STAGE
| THERMOSTAT1 |
|
| COOLING / HEATING (ELECTRONIC THERMOSTAT) | ||||
| TERMINALS |
| UNIT TERMINAL | |||||
ADD |
| RC |
|
| STRIP TB1 | 24 VOLT |
| SINGLE STAGE |
| RH |
|
| R | TRANSFORMER |
|
| |
JUMPER |
|
|
|
|
| |||
|
|
|
|
|
|
|
| |
|
| Y1 |
|
| Y1 |
| THERMOSTAT1 |
|
|
| Y2 |
| 2 | Y2 |
| TERMINALS | UNIT TERMINAL |
|
|
|
|
|
|
| ||
|
| W1 |
|
| W1 |
|
| STRIP TB1 |
| 4 | W2 |
| 3 | W2 |
| RH | |
|
|
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| |||||
|
|
|
|
|
| |||
|
| G |
|
| G |
| RC | R |
|
| B |
|
| C | ADD | Y | Y1 |
|
|
|
| JUMPER | ||||
|
| LED 1 |
|
| X | W | W1 | |
|
|
|
|
| ||||
|
| LED 2 | NOT |
| OCC |
| G | G |
|
|
| USED |
|
|
| ||
|
| COM | 4 |
|
|
| C | |
|
| A1 |
|
|
|
|
| |
ADD |
|
|
|
|
|
| 24 VOLT | |
JUMPER |
| A2 |
|
|
|
|
| |
|
|
|
|
|
|
| ||
|
| T |
| TO REMOTE SENSOR |
|
| TRANSFORMER | |
T
2TH040702224 IF USED
|
| 1ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE). |
1 | ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET04700224 (INCLUDES SUBBASE). | TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THERMOSTAT |
2 | SECOND STAGE COOLING IS NOT REQUIRED ON UNITS LESS ECONOMIZER. | 2TH04700224. |
3SECOND STAGE HEATING IS ONLY REQUIRED ON UNITS WITH A TWO STAGE ELECTRIC HEATER.
4REMOVE JUMPER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR P6 ON UNITS WITH ECONOMIZER. TERMINALS A1 AND A2 PROVIDE A RELAY
FIGURE 3 - TYPICAL FIELD POWER & CONTROL WIRING
Unitary Products Group | 9 |