036-21502-002-A-0303
TYPICAL POWER WIRING
REFER TO THE ELECTRICAL DATA
TABLES TO SIZE THE DISCONNECT
SWITCH, OVERCURRENT PROTEC-
TION AND WIRING.
TYPICAL CONTROL WIRING
COOLING ONLY (24 VOLT THERMOSTAT)
THERMOSTAT1 | UNIT TERMINAL | |
TERMINALS | STRIP TB1 |
|
RV | R | 24 VOLT |
|
| |
YC | Y1 | TRANSFORMER |
| ||
| Y2 |
|
GF | G |
|
| C |
|
124 VOLT THERMOSTAT 2TH07701024. TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THE THERMOSTAT 2TH0401224.
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 THEROMSTAT 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 THEROMSTAT)
MULTI STAGE
THERMOSTAT1 |
|
|
|
| ||
TERMINALS | UNIT TERMINAL |
| ||||
ADD | RC |
|
| STRIP TB1 |
| 24 VOLT |
|
|
|
|
| ||
RH |
|
| R | TRANSFORMER | ||
JUMPER |
|
| ||||
Y1 |
|
| Y1 | |||
|
|
|
|
| ||
| Y2 |
| 2 | Y2 |
|
|
| W1 |
|
| W1 |
|
|
4 | W2 |
| 3 | W2 |
|
|
| G |
|
| G |
|
|
| B |
|
| C |
|
|
| LED 1 |
|
| X |
|
|
| LED 2 | NOT |
| OCC |
|
|
| COM | USED | 4 |
|
|
|
|
|
|
|
| ||
ADD | A1 |
|
|
|
|
|
|
|
|
|
|
| |
JUMPER | A2 |
|
|
|
|
|
|
|
|
|
|
| |
| T |
| TO REMOTE SENSOR |
|
| |
| T |
| 2TH040702224 IF USED |
| ||
1ELECTRONIC PROGRAMMABLE THEROMSTAT 2TH04700224 (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.
COOLING / HEATING (ELECTRONIC THEROMSTAT)
SINGLE STAGE
| THERMOSTAT1 |
|
| TERMINALS | UNIT TERMINAL |
| RH | STRIP TB1 |
| RC | R |
ADD | Y | Y1 |
|
| |
JUMPER | W | W1 |
| G | G |
|
| C |
|
| 24 VOLT |
|
| TRANSFORMER |
1ELECTRONIC PROGRAMMABLE THEROMSTAT 2ET07701024 (INCLUDES SUBBASE).
TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THERMOSTAT 2TH04700224.
FIGURE 2: TYPICAL FIELD POWER & CONTROL WIRING
Unitary Products Group | 31 |