1
1
8
8
This thermostat is equipped with Energy Efficient Control (EEC) that continually monitors the performance of
the HVAC system and uses Stage 2 (heat or cool) and Stage 3 (auxiliary heat) only when necessary. If it
determines that Stage 1 is able to heat or cool at a rate of 5 degrees per hour or better, Stage 2 will not be used.
If Stage 1 is unable to heat or cool at this rate, the thermostat will use Stage 2 as needed. Under these
conditions, Stage 1 will run continuously and Stage 2 will cycle on and off as needed. In extremely cold
conditions, the auxiliary heating will be used when Stage 1 and/or Stage 2 is not heating at a sufficient rate.
EEC: This item turns on/off the Energy Efficient Control. On single state conventional HVAC systems, EEC
enables the PID control algorithm.
Cool Anticipator: This adjusts the tendency of the HVAC to run the cooling system to refresh and dehumidify
the air before the temperature rises to the desired cool settings. The recommended setting for most forced air
cooling systems is 4. A higher number will decrease the tendency to run the cooling system below the cooling
setting. A higher setting of 5 or 6 may be desired in dry climates.
2nd Stage Differential: This determines how far from the setpoint the temperature has to be before the second
stage turns on.
Auxiliary Heat Differential:
This determines how far from the setpoint the temperature has to be before the
auxiliary heat turns on. This is only available for heat pump systems.
Conventional (1 Cool / 1 Heat)
Zone Control (1 Cool / 1 Heat)
Heat Pump (1 Cool / 2 Heat)
Dual Fuel Heat Pump (1 Cool / 2 Heat)
EEC
*On
On / Off
EEC
*On
On / Off
Cool Anticipator
*4
1 - 10
Aux Heat Differential
*2
1 - 10
Heat Pump (2 Cool / 3 Heat)
Dual Fuel Heat Pump (2 Cool / 3 Heat)
Conventional (2 Cool / 2 Heat)
EEC
*On
On / Off
EEC
*On
On / Off
2nd Stage Differential
*1
1 - 10
EEC
Settings
2nd Stage Differential
*2
1 - 10
Aux Heat Differential
*2
1 - 10
Temperature Sensors
The Temperature Sensor settings are used to configure the internal temperature sensor and optional remote
temperature sensors that are connected to the thermostat. Any temperature sensors that are set as the same type
(i.e. indoor or outdoor) will display the average temperature reading among the sensors.
Internal Sensor: This will enable or disable the onboard temperature sensor for indoor use only. *Enabled
External Sensor 1: This will enable the external temperature sensor for indoor or outdoor use. All indoor
and outdoor temperatures are averaged between all sensors of the same type. *Disabled
External Sensor 2: This will enable the expansion module temperature sensor for indoor or outdoor use. All
indoor and outdoor temperatures are averaged between all sensors of the same type.
*Disabled
External Sensor 3: This will enable the expansion module temperature sensor for indoor or outdoor use. All
indoor and outdoor temperatures are averaged between all sensors of the same type.
*Disabled
