Comfort Stat CDT901 - Manual (Page 31)

CDT900 Series Touchscreen Programmable Thermostata
1. POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED
2. FACTORY INSTALLED JUMPER.
3. OPTIONAL OUTDOOR OR INDOOR REMOTE SENSOR. AVAILABLE ON SELECT MODELS. WIRES MUST HAVE A CABLE
SEPARATE FROM THE THERMOSTAT CABLE
Fig. 17. Typical hookup of conventional multistage two-stage heating and two-stage
cooling in a two-transformer system (2H/2C, 2H/1C or1H/2C conventional).
30
CONVENTIONAL S1 S2 C R RC W W2 Y2 Y G
OUTDOOR/INDOOR
TEMPERATURE
SENSOR
3
OPTIONAL
24VAC
COMMON
CONNECTION
MUST COME
FROM THE
COOLING
TRANSFORMER
R C 1
2
FAN RELAY
HEAT RELAY 1
HEAT RELAY 2
COOL RELAY 2
COOL RELAY 1
R C 1