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

T 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 OUT-PUT TO CLOSE THE OUTDOOR ECONOMIZER DAMPERS WHEN THE THERMOSTAT SWITCHES TO THE SET-BACK POSITION.

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

Page 25
Image 25
York DY 048, DY 060 warranty Typical Power Wiring