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VisionPRO
TM
8000 Touchscreen Programmable Thermostat
9 68-0280—01
Fig. 18. Typical hookup of single-stage heat pump with no auxiliary/backup heat (1H/1C heat pump).
Fig. 19. Typical hookup of multistage heat pump with no auxiliary/backup heat (2H/2C heat pump).
R
C
R
Y
G
C
Y2
L
E
SI
H
EAT P
U
M
P
COMPRESSOR
RELAY
M19903B
CHANGEOVER
VALVE
FAN RELAY
R
C
1
1
2
2
3
4
3
3
4
OPTIONAL 24 VAC
CO
MM
O
N
CO
NNE
C
TI
ON
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
R
C
R
Y
G
C
Y2
L
E
SI
H
EAT P
U
M
P
COMPRESSOR 1COMPRESSOR 2
M19904
CHANGEOVER
VALVE
FAN RELAY
R
C
1
1
2
2
3
4
5
5
4
4
3
3
OPTIONAL 24 VAC
CO
MM
O
N
CO
NNE
C
TI
ON
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
MUST CONNECT THE 24 VAC COMMON WHEN USING L. THE TERMINAL IS SHOWN AS EQUIPMENT MONITOR, CAN ALSO BE USED AS A 24 VAC
OUTPUT. SEE "HEAT PUMP LED" SECTION FOR MORE INFORMATION.
"O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE INSTALLER SETUP.
OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE FROM THE
THERMOSTAT CABLE.
OUTDOOR/INDOOR
TEMPERATURE
SENSOR