
343615-YTG-B-0308 
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 | 
 | 
| YC | Y1 | 24 VOLT | 
| TRANSFORMER | ||
| 
 | Y2 | 
 | 
GFG
C
124 VOLT THERMOSTAT 2TH07701024. TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THE THERMOSTAT 2TH0401224.
COOLING / HEATING (ELECTRONIC THERMOSTAT)
MULTI STAGE
| THERMOSTAT1 | 
 | 
 | 
 | |
| TERMINALS | 
 | UNIT TERMINAL | 
 | |
| ADD | RC | 
 | STRIP TB1 | 24 VOLT | 
| RH | 
 | R | TRANSFORMER | |
| JUMPER | 
 | |||
| Y1 | 
 | Y1 | 
 | |
| 
 | 
 | 
 | ||
| 
 | Y2 | 2 | Y2 | 
 | 
| 4 | W1 | 
 | W1 | 
 | 
| W2 | 3 | W2 | 
 | |
| 
 | G | 
 | G | 
 | 
BC
| LED 1 | 
 | 
 | X | 
| LED 2 | NOT | 
 | OCC | 
| 
 | USED | 4 | 
 | 
| COM | 
 | 
| ADD | A1 | 
| JUMPER | A2 | 
T TO REMOTE SENSOR
 TO REMOTE SENSOR
T 2TH040702224 IF USED
 2TH040702224 IF USED
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 
FIGURE 2 - TYPICAL FIELD POWER & CONTROL WIRING
COOLING / HEATING (24 VOLT THERMOSTAT)
THERMOSTAT1
TERMINALS
| 
 | RH | UNIT TERMINAL | 
 | 
| ADD | STRIP TB1 | 
 | |
| 
 | 
 | 
 | |
| JUMPER | RC | R | 
 | 
| 
 | Y | Y1 | 24 VOLT | 
| 
 | 
 | Y2 | TRANSFORMER | 
| 
 | 
 | 
 | 
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)
SINGLE STAGE
| 
 | THERMOSTAT1 | UNIT TERMINAL | ||||
| 
 | TERMINALS | |||||
| 
 | 
 | 
 | 
 | STRIP TB1 | ||
| 
 | 
 | RH | 
 | |||
| ADD | 
 | RC | 
 | 
 | R | 
 | 
| 
 | Y | 
 | Y1 | |||
| JUMPER | 
 | 
 | ||||
| 
 | 
 | 
 | 
 | 
 | 
 | |
WW1
| G | G | 
C
24 VOLT
TRANSFORMER
1ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE).
TO CONTROL THE ECONOMIZER ON SECOND STAGE COOLING, USE THERMOSTAT 2TH04700224.
| Johnson Controls Unitary Products | 25 |