York 090 - Manual (Page 8)

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 TERMINAL BLOCK
IN AIR HANDLER WITH ELECTRIC HEAT 3,4
DEFROST
CONTROL
1
FIELD
INSTALLED
JUMPER
GND.
SCREW
CONTACTOR
T2 T1
L2 L1
M
R
L or X
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 E AND W TOHEAT
ON FIRST STAGE DURING EMERGENCY HEAT. 1
2 TERMINAL NOT USED ON ALL THERMOSTATS.
POWER WIRING
208/230-3-60
460-3-50
3 CHECK THE LOW VOLTAGE TERMINAL BLOCK ON THE INDOOR UNIT FOR THE ACTUAL ARRANGEMENT OF THE TERMINALS.
4 CONNECT POWER WIRING TO TERMINAL BLOCK 3TB ON UNITS WITHOUT ELECTRIC HEAT OR CIRCUIT BREAKER.
B or C
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 OPTIONAL OUTDOOR THERMOSTAT KITS.
B or C
POWER
SUPPLY
208/230-3-60
460-3-50
T3
L3
CC
GRY 5
THERMOSTAT INDOOR UNIT OUTDOOR UNIT
LOW VOLTAGE TERMINAL BLOCK
IN AIR HANDLER 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 E AND W TOHEAT
ON FIRST STAGE DURING EMERGENCY HEAT. 1
2 TERMINAL NOT USED ON ALL THERMOSTATS.
POWER WIRING
208/230-3-60
460-3-50
3 CHECK THE LOW VOLTAGE TERMINAL BLOCK ON THE INDOOR UNIT FOR THE ACTUAL ARRANGEMENT OF THE TERMINALS.
4 CONNECT POWER WIRING TO TERMINAL BLOCK 3TB ON UNITS WITHOUT ELECTRIC HEAT OR CIRCUIT BREAKER.
B or C
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 NOT USED ON ALL THERMOSTATS.
5
REQUIRED ON ALL ELECTRIC HEAT