Mounting Thermostat To Wallplate - Honeywell T8000C Installation Instructions Manual

G
Rc
R
W
Y
MOUNTING
WIRING ENTRANCE
SCREW HOLE
HOLE
Fig. 4. Restrict wiring to shaded area.
The T8000C Thermostat is powered through the heating/
cooling system controls and is adaptable to most 18 to 30
Vac heating-cooling systems. Refer to Fig. 5 and 6 for
typical wiring hookups.
HEAT
RELAY
1
FAN
L1
RELAY
(HOT)
L2
TRANSFORMER
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2 CAN BE USED FOR CHANGEOVER VALVE ON SINGLE-STAGE HEAT
PUMP SYSTEMS.
3
JUMPER R TO Rc.
Fig. 5. Typical hookup of T8000C in heat-cool
system with single transformer.
KEEP WIRING IN
SHADED AREA
B
O
MOUNTING
SCREW HOLE
T8000C THERMOSTAT
G
Rc
3
R
W
B
Y
O
COOL
DAMPER
COMPRESSOR
CONTACTOR
T8000C PROGRAMMABLE THERMOSTAT
1
L1
(HOT)
L2
COOLING
TRANSFORMER
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
2 REMOVE JUMPER RC TO R WHEN INSTALLED ON A TWO TRANSFORMER
SYSTEM.
3
CAN BE USED FOR CHANGEOVER VALVE ON SINGLE-STAGE HEAT
PUMP SYSTEMS.
4
POWER TO R TERMINAL IS REQUIRED WHEN THE SYSTEM SWITCH IS IN
THE OFF POSITION.
Fig. 6. Typical hookup of T8000C in heat-cool
Setting Fan Operation (Fuel) Switch
The fan operation (fuel) switch is preset at the factory in
M12560
the F position. See Fig. 7. This is the correct setting for
most systems. If this system is an electric heat system, set
the switch to the E position. The E setting allows the fan to
turn on immediately with the heating or cooling equipment
in a system where the G terminal is connected.
2
2
HEAT
DAMPER

Mounting Thermostat to Wallplate

1. Slide SYSTEM switch to the Off position.
2. Engage the tabs at the top of the thermostat and
wallplate.
3. Swing down the thermostat and press the lower
edge of the thermostat onto the wallplate to latch.
See Fig. 8.
M12561
3
T8000C THERMOSTAT
G
Rc
R
2 4
W
Y
3
FAN
COOL
RELAY
DAMPER
COMPRESSOR HEAT
RELAY
CONTACTOR
system with two transformers.
FAN OPERATION (FUEL) SWITCH
Fig. 7. Fan operation (fuel) switch.
B
O
3
HEAT
DAMPER
1
L1
(HOT)
L2
HEATING
TRANSFORMER
M12562
E
F
M12580
69-1433–1