Heat Pump, 1 or 2 Stages, Aux Heat or Dual Fuel

Go to Settings > Installer Settings > System Configuration to open the SYSTEM CONFIGURATION screen.

Use the System Type, System Performance, Radiant Floor, User Controls, Humidistat Setup, and Sensor Setup options to configure the thermostat to work with the connected HVAC system.

System Configuration

System Type

Select System Type and then configure these settings:

  

  • System Type: Select Heatpump w/ Aux or Dual Fuel Heatpump.

  • Heat Pump w/ Aux or Dual Fuel Heat Pump: Dual Fuel runs either the heat pump or the aux output, depending on outdoor temperature. The heat pump with aux can stage the heat when required to improve performance.

    • Dual Fuel: A dual fuel system combines an energy efficient air source heat pump with a new or existing oil, gas or propane furnace. The furnace runs in place of the heat pump in cold weather.
    • Aux (Auxiliary) Heat: When the a heat pump can no longer efficiently transfer heat from the outside air, the thermostat automatically turns on a secondary heat source, such as electric resistive heat.
  • Fan In Heat: Select Yes or No (default). Fan In Heat options change if Heat Stages is set to 2. Select one of the following options:
    • Yes: Fan called for first and second stage (W/W2).
    • W2 Only: Fan called for second stage (W2) only.
    • No: Disable fan call operation for heat calls.

  • Heat Pump Compressor Stages: Number of heat pump compressor stages present. Choose 1 or 2. Default setting: 1.

  • Heat Pump Auxiliary Stages: Number of Auxiliary Heat stages present. Choose 1 or 2. Default setting: 1.

System Performance

Select System Performance and then configure these settings:

    

  • Heat Anticipator: Select 1, 2, 3 (default), 4, 5, or 6.

    For example, to adjust space heating system cycling characteristics, select 1 for more frequent cycles and faster responses or 6 for less frequent cycles and slower responses.

  • Cool Anticipator: Select 1, 2, 3 (default), 4, 5, or 6.

    For example, to adjust cooling system cycling characteristics, select 1 for more frequent cycles and faster responses or 6 for less frequent cycles and slower responses.

  • Interstage Differential: The proportional temperature error to trigger the next stage. Select 0.5 - 8.0 for Fahrenheit or 0.2 - 4.5 for Celsius. The default setting is 2.0 for Fahrenheit and 1.0 for Celsius.

  • Accumulated Staging Index: Triggers the next stage to meet demand in instances where the previous stage cannot reach the Interstage Differential or achieve the desired setpoint. Select 1, 2, 3 (default), 4, 5, or 6.

    For example, select 1 for a faster trigger to the next stage or 5 for a slower trigger to the next stage. Setting 6 disables this feature altogether.

  • Heat Pump Balance Point: Minimum outdoor temperature at which the heat pump runs (requires an outdoor temperature source). Select N/A or 0 - 90 for Fahrenheit (-18 - 31 for Celsius). Default setting: N/A.

  • Short Cycle Timeout: The minimum off time between system calls. Select 30 seconds, 60 seconds, or 180 seconds (default).

  • Auxiliary Heat Balance Point: Maximum outdoor temperature at which Auxiliary heat system supplements the heat pump (requires an outdoor temperature sensor). Select N/A (default) or 0 - 90 for Fahrenheit (-18 - 31 for Celsius).

    NOTES: Auxiliary Heat Balance Point:

    • Must be at least 1° higher than the Heat Pump Balance Point.
    • Cannot be accessed for Dual Fuel systems.

User Controls

Select User Controls and then configure these settings:

        

Notes:

  • In Heat Only and Cool Only systems, the Auto Setpoint option is not available.
  • In Cool Only systems, the Heat Lower Setpoint and Heat Upper Setpoint options are not available.
  • In Heat Only systems, the Cool Lower Setpoint and Cool Upper Setpoint options are not available.
  • In Heat Only or Cool Only systems or when Auto Setpoint is set to Dual or Disable, the Auto Lower Setpoint and Auto Upper Setpoint options are not available.
  • In Heat Only or Cool Only systems or when Auto Setpoint is set to Disable, the Auto Deadband option is not available.

  • Auto Setpoint: Defines how Auto mode operates. Select Dual (default) to use individual heat and cool setpoints, Single to use one setpoint for both heat and cool, or Disabled to turn off Auto mode.

  • Setpoint Units: Defines the temperature scale and setpoint incrementation for the thermostat and sensors. Select 1F (default), 1C, or 0.5C.

  • Temp Display Offset: Adjusts an offset between the space temperature displayed and the temperature sensed. Select -6 to +6 for Fahrenheit or -3.0 - +3.0 for Celsius. The default setting is 0.

  • Heat Lower Setpoint: Limits the minimum heat setpoint the end user can set. Select 38 - 79 (Fahrenheit) or 3 - 27 (Celsius).The default setting is 38 (Fahrenheit) or 3 (Celsius)

  • Heat Upper Setpoint: Limits the maximum heat setpoint the end user can set. The Upper Setpoint must be at least 10° (Fahrenheit) or 5° (Celsius) higher than the Lower Setpoint. Select 48 - 89 for (Fahrenheit) or 8 - 32 (Celsius). The default setting is 89 (Fahrenheit) or 32 (Celsius)

  • Cool Lower Setpoint: Limits the minimum cool setpoint the end user can set. Select 38 - 89 (Fahrenheit) or 3 - 32 (Celsius).The default setting is 59 (Fahrenheit) or 15 (Celsius).

  • Cool Upper Setpoint: Limits the maximum cool setpoint the end user can set. The Upper Setpoint must be at least 10° (Fahrenheit) or 5° (Celsius) higher than the Lower Setpoint. Select 48 - 99 for (Fahrenheit) or 8 - 37 (Celsius). The default setting is 99 (Fahrenheit) or 37 (Celsius).

  • Auto Lower Setpoint: Limits the minimum auto setpoint the end user can set. Select 38 - 89 (Fahrenheit) or 3 - 32 (Celsius).The default setting is 59 (Fahrenheit) or 15 (Celsius).

  • Auto Upper Setpoint: Limits the maximum auto setpoint the end user can set. The Upper Setpoint must be at least 10° (Fahrenheit) or 5° (Celsius) higher than the Lower Setpoint. Select 48 - 99 for (Fahrenheit) or 8 - 37 (Celsius). The default setting is 99 (Fahrenheit) or 37 (Celsius).

  • Auto Deadband: This sets the separation between the heat and cool setpoints in Auto mode. In Dual Mode, this is the minimum separation allowed. Select 2.0 (default), 3.0, 4.0, 5.0, or 6.0 for Fahrenheit or 1.0 (default), 2.0, or 3.0 for Celsius.

Sensor Setup

Select Sensor Setup and then configure these settings:

        

  • Local Sensor Usage: Defines how the local sensor is used by the thermostat. Select Omit or Space.

    • Omit: Omits channel from thermostat operation

      • NOTE: Sensor temperature and humidity can be output to the network even if Omit is selected.

    • Space: Adds channel to space temperature/humidity average

  • TS1 Usage: Defines how remote sensor channel 1 is used by the thermostat.

    • Omit: (Default) Omits channel from thermostat operation
    • Space: Adds channel to space temperature/humidity average
    • Outdoor: Adds channel to outdoor temperature/humidity average
    • Floor: Adds channel to slab (floor) temperature average

  • TS2 Usage: Defines how remote sensor channel 2 is used by the thermostat.

    • Omit: (Default) Omits channel from thermostat operation
    • Space: Adds channel to space temperature/humidity average
    • Outdoor: Adds channel to outdoor temperature/humidity average
    • Floor: Adds channel to slab (floor) temperature average

  • Wall Type: Defines the wall type that the thermostat is installed into for accurate temperature readings. Select Non-Insulated (hollow) or Insulated.

  • Local Sensor Temperature Trim: Adjusts local sensor temperature measurement. Select -6 to +6 for Fahrenheit (-3.0 to +3.0 for Celsius). The default setting is 0.

  • TS1 Temperature Trim: Adjusts temperature sensed by temperature sensor(s) attached to TS1 input. Select -6 to +6 for Fahrenheit (-3.0 to +3.0 for Celsius). The default setting is 0.

  • TS2 Temperature Trim: Adjusts temperature sensed by temperature sensor(s) attached to TS2 input. Select -6 to +6 for Fahrenheit (-3.0 to +3.0 for Celsius). The default setting is 0.

  • Local Sensor Humidity Trim: Adjusts local sensor humidity percentage. Select -9.0 to +9.0. The default setting is 0.

  • TS1 Humidity Trim: Adjusts humidity percentage sensed by temperature/humidity sensor attached to TS1 input. Select -9.0 to +9.0. The default setting is 0.

  • TS2 Humidity Trim: Adjusts humidity percentage sensed by temperature/humidity sensor attached to TS2 input. Select -9.0 to +9.0. The default setting is 0.

Humidistat Setup

Select Humidistat Setup and then configure these settings:

  

  • Invert Call Logic: Change the HUM relay control logic for a humidifier or dehumidifier expecting a Normally Closed (NC) input. To invert the call logic, turn on the switch. The default setting is off for a Normally Open (NO) input.

  • Humidistat Setup: Sets the operating mode of the HUM relay. Select Humidification (default), Dehumidification, or Off.

    • Humidification: Calls HUM relay when sensed humidity is below the humidistat setpoint.
    • Dehumidification: Calls HUM relay when sensed humidity is above the humidistat setpoint.
    • Off: Disable humidistat

  • Fan In Humidistat: Select No (default) or Yes.

    If Yes, the thermostat will make a fan call when a humidistat call is triggered instead of waiting for a heat or cool call to trigger the fan.

  • Cool Humidistat Setpoint Limit: Limits internal humidistat setpoint to prevent window condensation when it is cold outside (displayed setpoint will not change). Select No (default) or Yes.

  • Lower Setpoint: Limits the minimum humidistat setpoint percentage. Select 5 - 80. The default setting is 10.

  • Upper Setpoint: Limits the maximum humidistat setpoint percentage. Select 15 - 90. The default setting is 70.

    NOTE: The Upper Setpoint must be 10% higher than the Lower Setpoint.