T8000C, T8001C AND T8024D PROGRAMMABLE THERMOSTATS

68-0195–2

5

L1
(HOT)
L2
M12561
FAN
RELAY
T8000C THERMOSTAT
COMPRESSOR
CONTACTOR
TRANSFORMER
COOL
DAMPER
1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
CAN BE USED FOR CHANGEOVER VALVE ON SINGLE-STAGE HEAT
PUMP SYSTEMS.
JUMPER R TO Rc.
2
3
2
2
1
Y
G
Rc
W
3
R
B
O
HEAT
RELAY
HEAT
DAMPER
Fig. 8. T8000C heat-cool wiring diagram on azone 1 MABS II Mastertrol control panel.

T8

T7

T6

T5

O1

G1

B1

E1

T4

ZONE 1

CHANGEOVER

CONTROL

M12563

Y

G

Rc

W

1

1JUMPER R TO RC.

R

B

O

T8000C THERMOSTAT

Fig. 9. T8001C heat-cool wiring diagram in singletransformer system with gas heat/electric cooling.Fig. 6. T8000C heat-cool wiring diagram in singletransformer system with gas heat/electric cooling.Fig. 7. T8000C wiring diagram in heat/coolsystem with two transformers.
Y
G
Rc
W
24
R
B
O
M12562
L1
(HOT)
L2
FAN
RELAY
HEAT
RELAY
L1
(HOT)
L2
COMPRESSOR
CONTACTOR
HEATING
TRANSFORMER
COOLING
TRANSFORMER
HEAT
DAMPER
COOL
DAMPER
1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
REMOVE RC TO R JUMPER WHEN INSTALLED ON A TWO TRANSFORMER
SYSTEM.
CAN BE USED FOR CHANGEOVER VALVE ON SINGLE-STAGE HEAT
PUMP SYSTEMS.
POWER TO R TERMINAL IS REQUIRED WHEN THE SYSTEM SWITCH IS IN
THE OFF POSITION.
2
3
3
1
1
3
4
L1
(HOT)
L2
M12566
FAN
RELAY
HEAT
RELAY
COMPRESSOR
CONTACTOR
TRANSFORMER
HEAT
DAMPER
COOL
DAMPER
1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
CAN BE USED FOR CHANGEOVER VALVE ON SINGLE-STAGE HEAT
PUMP SYSTEMS.
2
2
2
1
Y
G
C
W
2
R
B
O
T8001 THERMOSTAT
T8
T7
T6
T5
O1
G1
B1
E1
T4
M1
ZONE 1
CHANGEOVER
CONTROL
M12567
Y
G
C
W
R
B
O
T8001 THERMOSTAT
Fig. 10. T8001C heat-cool wiring diagram on azone 1 MABS II Mastertrol control panel.