TYPICAL POWER WIRING
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| REFER TO THE ELECTRICAL DATA |
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| TABLES TO SIZE THE DISCONNECT |
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| SWITCH, OVERCURRENT PROTEC- |
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| TION AND WIRING. |
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| TYPICAL CONTROL WIRING |
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COOLING ONLY (24 VOLT THERMOSTAT) | COOLING / HEATING (24 VOLT THERMOSTAT) | |||||
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| THERMOSTAT1 |
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THERMOSTAT1 | UNIT TERMINAL |
| TERMINALS |
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TERMINALS | STRIP TB1 |
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| RH | UNIT TERMINAL |
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| STRIP TB1 |
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| ADD |
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RV | R |
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| JUMPER | RC | R |
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YC | Y1 | 24 VOLT |
| Y | Y1 |
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TRANSFORMER |
| 24 VOLT | ||||
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| TRANSFORMER | |
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| Y2 |
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| Y2 |
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| W | W1 |
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GF | G |
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| W2 |
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| C |
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| G | G |
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| C |
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124 VOLT THERMOSTAT 2TH07701024. TO CONTROL THE ECONOMIZER |
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ON SECOND STAGE COOLING, USE THE THERMOSTAT 2TH0401224. | 124 VOLT THERMOSTAT 2ET07701024. TO CONTROL THE ECONOMIZER ON THE SECOND | |||||
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| STAGE COOLING OR TO HAVE AN ELECTRIC HEAT ACCESSORY WITH TWO STAGES OF | |||
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| HEAT, USE THERMOSTAT 2TH0471024. |
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COOLING / HEATING (ELECTRONIC THERMOSTAT) | COOLING / HEATING (ELECTRONIC THERMOSTAT) | |||||||
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| MULTI STAGE |
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| SINGLE STAGE | ||
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| THERMOSTAT1 |
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| TERMINALS |
| UNIT TERMINAL |
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| THERMOSTAT1 |
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ADD |
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| STRIP TB1 | 24 VOLT |
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| RH |
| R | TRANSFORMER |
| TERMINALS | UNIT TERMINAL | |
JUMPER |
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| STRIP TB1 | |
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| Y1 |
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| RH | |
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| Y2 | 2 | Y2 |
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| W1 |
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| RC | R |
| 4 | W2 | 3 | W2 |
| ADD | Y | Y1 |
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| G |
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| B |
| C |
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| W | W1 |
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| LED 1 |
| X |
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| G | G |
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| LED 2 NOT |
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| OCC |
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| C | |
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| USED | 4 |
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ADD |
| COM |
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| 24 VOLT | |
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JUMPER |
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| TRANSFORMER |
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| T | TO REMOTE SENSOR |
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| T | 2TH040702224 IF USED |
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1ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET04700224 (INCLUDES SUBBASE).
2SECOND STAGE COOLING IS NOT REQUIRED ON UNITS LESS ECONOMIZER.
3SECOND STAGE HEATING IS ONLY REQUIRED ON UNITS WITH A TWO STAGE ELECTRIC HEATER OR 2 STAGE GAS HEAT.
4REMOVE JUMPER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR P6 ON UNITS WITH ECONOMIZER. TERMINALS A1 AND A2 PROVIDE A RELAY
1ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE).
TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THERMOSTAT 2TH04700224.
FIGURE 2 - TYPICAL FIELD POWER & CONTROL WIRING
Unitary Products Group | 35 |
