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279104-YTG-B-0307
8 Unitary Products Group
TYPICAL FIELD WIRING - 3 PH (036 - 060)
TYPICAL FIELD WIRING - 3 PH (090)
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
LOW VOLTAGE TERMINALBLOCK
IN AIRHANDLER WITH ELECTRIC HEAT
3,4
DEFROST
CONTROL
1
FIELD
INSTALLED
JUMPER
GND.
SCREW
CONTACTOR
T2
T1
L2
L1
M
R
LorX
Y
O
W
G
T
2
E
2
R
R
Y
Y
O
O
W2
W
W1
C
X
G
W1
GND.
LUG
POWER WIRING
24V CONTROL WIRING
(NEC CLASS 2)
JUMPER TERMINALS EAND W TOHEAT
ON FIRST STAGE DURING EMERGENCY HEAT.
1
2
TERMINAL NOTUSED ON ALLTHERMOSTATS.
POWER WIRING
208/230-3-60
460-3-50
3
CHECK THE LOW VOLTAGE TERMINAL BLOCK ONTHE INDOOR UNIT FOR THEACTUALARRANGEMENT OF THE TERMINALS.
4
CONNECT POWER WIRING TO TERMINALBLOCK 3TB ON UNITS WITHOUT ELECTRIC HEAT OR CIRCUIT BREAKER.
BorC
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
RED
BLK
YEL
ORG
BRN
PUR
WHT
/66
5
GRAY FOR USE WITH OPTIONALOUTDOOR THERMOSTAT KITS.
BorC
POWER
SUPPLY
208/230-3-60
460-3-50
T3
L3
CC
GRY
5
THERMOSTAT
INDOOR UNIT
OUTDOOR UNIT
LOW VOLTAGE TERMINALBLOCK
IN AIRHANDLER WITH ELECTRIC HEAT
3,4
DEFROST
CONTROL
1
FIELD
INSTALLED
JUMPER
GND.
SCREW
CONTACTOR
T2
T1
L2
L1
M
R
X
Y
O
W
G
T
2
E
2
R
R
Y
Y
O
O
W
W
W1
C
X
53
G
GND.
LUG
POWER WIRING
24V CONTROL WIRING
(NEC CLASS 2)
JUMPER TERMINALS EAND W TOHEAT
ON FIRST STAGE DURING EMERGENCY HEAT.
1
2
TERMINAL NOTUSED ON ALLTHERMOSTATS.
POWER WIRING
208/230-3-60
460-3-50
3
CHECK THE LOW VOLTAGE TERMINAL BLOCK ONTHE INDOOR UNIT FOR THEACTUALARRANGEMENT OF THETERMINALS.
4
CONNECT POWER WIRING TO TERMINALBLOCK 3TB ON UNITS WITHOUT ELECTRIC HEAT OR CIRCUIT BREAKER.
BorC
ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES
RED
BLK
YEL
ORG
BRN
PUR
WHT
/66
C
POWER
SUPPLY
208/230-3-60
460-3-50
T3
L3
X
60
60
5
FIELD
INSTALLED
JUMPER
3
TERMINAL NOTUSED ON ALLTHERMOSTATS.
5
REQUIRED ONALL ELECTRIC HEAT