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REFER TO THE ELECTRICAL DATA
TABLES TO SIZE THE DISCONNECT
SWITCH, OVERCURRENT PROTEC-
TION AND WIRING.
FIELD WIRING
TYPICAL POWER WIRING
TYPICAL CONTROL WIRING
RV
YC
GF
R
Y1
B
Y2
THERMOSTAT
1
TERMINALS
UNIT TERMINAL
STRIP TB1
24 VOLT
TRANSFORMER
COOLING ONLY (24 VOLT THERMOSTAT)
124 VOLT THERMOSTAT 2TH07701024 IF THE UNIT HAS AN ECONOMIZER,
REMOVE JUMPER J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD
TO PREVENT SIMULTANEOUS OPERATION OF THE COMPRESSOR AND
THE ECONOMIZER. IF YOU WANT TO CONTROL THE ECONOMIZER ON A
SECOND STAGE OF COOLING, USE THE THERMOSTAT 2TH04701224.
COOLING ONLY (24 VOLT THERMOSTAT)
RC
Y
R
Y1
Y2
W1
W
W2
G
B
G
RH
THERMOSTAT
1
TERMINALS
U N IT T E R M IN A L
STRIP TB1
24 VOLT
TRANSFORMER
COOLING/HEATING (24 VOLT THERMOSTAT)
1
24 VOLT THERMOSTAT 2TH07701024. IF TH E U NIT H A S AN E C O N O M IZE R ,
REMOVE JUMPER J1 FROM TERMINALS 8 AND 10 ON THE RELAY BOARD
TO PREVENT SIMULTANEOUS OPERATION OF THE COMPRESSOR AND
T H E E CO N OM IZE R . IF Y OU W A N T TO C ON T R O L TH E R EC O N O M IZ E R O N A
SE CO N D S TA GE O F C OO LIN G O R H AVE A ND ELE CTR IC H EA T AC C ESS OR Y
WITH TWO STAGES OF HEAT, USE THERMOSTAT 2TH0471024
ADD
JUM PER
COOLING / HEATING (24 VOLT THERMOSTAT)
RC
RH
Y1
Y2
W1
W2
G
LED 1
LED 2
COM
A1
A2
T
T
B
R
Y1
Y2
G
B
X
N
W2
W1
THERMOSTAT
1
TERMINALS
U N IT T E R M IN A L
STRIP TB1
24 VOLT
TRANSFORMER
TO REMOTE SENSOR
2TH040702224 IF USED
NOT
USED
ADD
JUMPER
ADD
JUMPER
4
4
3
2
1
ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET04700224 (INCLUDES SUBBASE)
2
SECOND STAGE COOLING IS NOT REQUIRED ON UNITS LESS ECONOMIZER.
3
SECOND STAGE HEATING IS ONLY REQUIRED ON UNITS WITH A TWO STAGE
ELECTRIC HEATER.
4
REMOVE JUMBER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR
P 6 O N U NITS W ITH ECO NM IZER. TE RM INALS A1 AN D A2 PRO VID E A R ELAY
OUT-PUT TO CLOSE THE OUTDOOR ECONOMIZER DAMPERS WHEN THE
THERMOSTAT SWITCHES TO THE SET-BACK POSITION.
COOLING / HEATING (ELECTRONIC THERMOSTAT)
MULTI-STAGE
2
3
4
NOT
USED
RH
RC
Y
W
G
R
Y1
W1
B
G
ADD
JUMPER
THERMOSTAT
1
TERMINALS
U N IT T E R M IN A L
STRIP TB1
24 VOLT
TRANSFORMER
1
ELECTRONIC PROGRAMMABLE THERMOSTAT 2ET07701024 (INCLUDES SUBBASE).
IF THIS UNIT HAS AND ECONOMIZER, REMOVE JUMPER J1 FROM TERMINALS 8 AND
10 ON THE RELAY BOARD TO PREVENT SIMULTANEOUS OPERATION OF THE
COMPRESSOR AND THE ECONOMIZER. IF YOU WANT TO CONTROL THE
ECONOMIZER ON A SECOND STAGE OF COOLING, USE THERMOSTAT 2ET04700224.
C O O LIN G / H E A T IN G (E L E C T R O N IC T H E R M O S T A T )
SINGLE STAGE
COOLING / HEATING (ELECTRONIC THERMOSTAT)
SINGLE STAGE
530.18-TG1Y
16 Unitary Products Group