The EMS Si can be configured to perform actions based on the status of up to 2 external sensors (dry contact or external temperature resistive).
You can have multiple actions per input. You can also configure different actions when a sensor is open or closed. For example, if a window sensor is open, you can configure the system to adjust the temperature set point and disable the AC. An external temperature sensor can be used to provide remote temperature sensing and/or temperature control. Automation control can also be configured to take necessary actions when adjustable thresholds are exceeded.
To configure sensors and automation
From the Home screen, press MENU. Select Settings ▶ Installation Settings. Select Sensors.
Select the sensor you want to view or edit. Configure the sensor settings as required.
To create a new action, select Add New Action.
Setting Up the Sensor Inputs
The EMS Si system supports 2 sensor inputs (R1 and R2). In order to use them, you need to ensure they are correctly configured.
To enable, simply enter a name for this input (i.e. Door sensor). To disable this input, delete the name.
Defines the type of input: Dry Contact or Temperature Sensor.
If you define a temperature sensor, you will be prompted to select a manufacturer and model. If your sensor is not listed, you can add a manufactuer and model by selecting Add New and then configuring the follow values:
Manufacturer Select an existing manufactuer or provide a name for a new one.
Model Select an existing model or add a new one by defining the following sensor hardware parameters: Model Name, B Value, Compute B Value, and Temp Correction. Consult your sensor’s documentation for B and Compute B values.
The following usage options are available for temperature sensors:
Control Sensor Enables the EMS Si to use the sensor as a remote temperature sensing source. The returned temperature values can be used to control the operation of the HVAC equipment. Automation actions are not supported with Control Sensors.
Monitoring Sensor Enables the EMS Si to perform actions when the sensor’s reported temperature value goes above or below configured set points. When selected, the following custom actions appear in the Actions options:
Temperature Above / Below Performs an action when the temperature is above or below the specified set point.
Outdoor Sensor Configures the EMS Si to use the sensor as an external temperature sensing source. Automation actions are not supported with Outdoor Sensors.
Discharge Air Sensor Enables the EMS Si to perform actions when the sensor’s reported temperature value goes above or below configured heating and cooling threshold values. When selected, the following custom actions appear in the Actions options:
Heating Above / Below When enabled, performs an action when the temperature is above or below the defined heating threshold.
Cooling Above / Below When enabled, performs an action when the temperature is above or below the defined cooling threshold.
Lets you to view the current state and edit action options for a sensor. To add a new action, select Add New Action.
State Configure if the circuit (contact) is Open or Closed.
Type Select the action to perform from the list:
Do Nothing No specific action will occur.
Switch to Occupied Switches the system to the Occupied program when the input is activated.
Switch to Unoccupied Switches the system to the Unoccupied program when the input is activated.
Shutdown Compressor The compressor (both for AC or Heat pump) will shutdown and remain shutdown until this input is cleared.
Shut down AC The air conditioning system will shutdown and will remain shutdown until this input has cleared
Adjust Temperature The heat and/or cool set points will be adjusted by a preprogrammed amount. It will revert back to the original set point when the input has cleared.
Turn On Fan The fan will be set to On. It will revert back to its original settings when the input is cleared.
Disable Auxiliary Heat The auxiliary heat equipment will be disabled. It will be re-enabled when the input is cleared.
Shutdown All HVAC All equipment will be disabled. It will be re-enabled when the input is cleared.
Disable All Heat All heat equipment will be disabled. It wil be re-enabled when the input is cleared.
Send Alert Enables the system to send an alert when the input has been activated.
Send Update Log Enables the system to log when this input is activated.
Activation Delay Configures time delay from when the input detects the active state to when the action programmed in the Type section is performed by the system. For example, if you connect a door sensor to the input and program a 5 minute activation delay, the door will need to open and remain open for 5 minutes before the thermostat takes action.
Deactivation Delay Configures a time delay from when the input detects the inactive state to when the system reverts back to its normal operating conditions. For example, if you connect a door sensor to the input and program a 5-minute deactivation delay. The door will remain closed for 5 minutes before the thermostat will revert back to the normal operating condition.
Min Action Duration Configures the minimum amount of time the system will perform this action. This timer will run its course regardless of whether the input has reverted back to its normal state and the deactivation timer has expired. This option is useful for applications where you want to run a device (i.e., fan or compressor) for a minimum amount of time after the input has been activated rather then using the deactivation delay. This ensures the fan or motor does not short cycle.
If Adjust Temperature is chosen as the Type you will also be presented with the following options:
Decrease Heat Temp Allows you to program the number of degrees that the heat set temperature will be adjusted by once an input has been activated. A positive number increases the heat set point and a negative number decreases the heat set point
Increase Cool Temp Allows you to program the number of degrees that the cool set temperature will be adjusted by once an input has been activated. A positive number increases the cool set point and a negative number decreases the cool set point.
In both cases this offset will apply to the set point temperature at the time of the activation of the input. As the system switches between program periods (i.e., occupied, unoccupied, etc) this offset will be maintained. Once the input has been switched back to the inactive state the set temperature will revert back to the normal limits.
Delete this Action Removes the configured action.