Comfort Stat CDT901 - Manual (Page 93)

CDT900 Series Touchscreen Programmable Thermostata
OPERATION IN EMERGENCY HEAT MODE
The balance point (outside) temperature is
not used in the Emergency heat mode. Whe
the thermostat is moved to the Emergency
Heat position, the compressor is locked out.
The first stage of heat is whatever is
connected to the E terminal. The second
stage of heat is what is connected to the Aux
terminal. Often there is only one source of
non-compressor heat and the E terminal is
jumped to the Aux. terminal.
Heat Pump with Electric Auxiliary
(Backup) Heat and Outdoor
Temperature Sensor
1.Choose correct heat pump application in
Installer Setup Number 0170.
2.Choose Electric as Auxiliary (Backup)
Heat Source in Installer Setup Number
0200.
3.Choose Outdoor Temperature Sensor
for Control Option in Installer Setup
Number 0340.
4.Choose Compressor Lockout
Temperature inInstaller Setup Number
0350.
5.Choose Auxiliary Lockout Temperature
in Installer Setup Number 0360.
NOTE: There is a 5°F deadband between th
Compressor and Auxiliary Heat Lockout
92