Honeywell VisionPRO TB8220 - HEAT PUMP WIRING CONFIGURATIONS; Single and Multistage Heat Pump Wiring

TB8220 COMMERCIAL VISIONPRO™ PROGRAMMABLE THERMOSTAT
63-2625—3 8
Heat Pump System Wiring
Fig. 19. Typical hookup of single-stage heat pump with no
auxiliary heat (1H/1C).
Fig. 20. Typical hookup of multistage heat pump with no
auxiliary heat (2H/2C).
Fig. 21. Typical hookup of single-stage heat pump with
auxiliary heat (2H/1C).
Fig. 22. Typical hookup of multistage heat pump
with auxiliary heat (3H/2C).
COMPRESSOR CONTACTOR
M22788B
CHANGEOVER VALVE
FAN RELAY
1
2
3
4
5
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
Y2
L
A
W1
S1
S2
2
RC
R
O/B
Y
G
C
4
L1
(HOT)
L2
1
24 VAC
5
ECONOMIZER
COMPRESSOR 1
COMPRESSOR 2
M22789B
CHANGEOVER VALVE
FAN RELAY
1
2
3
4
5
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
Y2
L
A
W1
S1
S2
2
RC
R
O/B
Y
G
C
4
L1
(HOT)
L2
1
24 VAC
5
ECONOMIZER
COMPRESSOR CONTACTOR
ECONOMIZER
M22790B
CHANGEOVER VALVE
FAN RELAY
1
2
3
4
5
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
Y2
L
A
W1
S1
S2
2
RC
R
O/B
Y
G
C
4
L1
(HOT)
L2
1
24 VAC
5
AUXILIARY HEAT RELAY
COMPRESSOR 1
COMPRESSOR 2
M22791B
CHANGEOVER VALVE
FAN RELAY
1
2
3
4
5
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
WHEN USING BATTERIES, THE 24V COMMON CONNECTION
IS OPTIONAL.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B"
IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR.
WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
Y2
L
A
W1
S1
S2
2
RC
R
O/B
Y
G
C
4
L1
(HOT)
L2
1
24 VAC
5
ECONOMIZER
AUXILIARY HEAT RELAY