ControlTemp CT2001 - Typical Hookup of Multistage Heat Pump with no Auxiliary;Backup Heat

CT2001 Touchscreen Programmable Thermostat
1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2. FACTORY INSTALLED JUMPER.
3. MUST CONNECT THE 24VAC COMMON WHEN USING L. THE TERMINAL IS SHOWN AS EQUIPMENT MONITOR, CAN ALSO BE
USED AS A 24VAC OUTPUT. SEE "HEAT PUMP LED" SECTION FOR MORE INFORMATION.
4. "O/B" TERMINAL SET TO CONTROL AS EITHER "O" OR "B" IN THE INSTALLER SETUP.
5. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE SEPARATE
FROM THE THERMOSTAT CABLE.
Fig. 19. Typical hookup of multistage heat pump with no auxiliary/backup heat
(2H/2C heat pump).
32
HEAT PUMP
S1 S2 C R RC W W2 Y2 Y G
S1 S2 C R RC E L Y2 Y G
O/B AUX
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
2
R
C
1
CHANGEOVER
VALVE
FAN RELAY
OPTIONAL
24VAC
COMMON
CONNECTION
5
COMPRESSOR 2
COMPRESSOR 1
4
3