Stop

The Stop expander enables you to configure stop optimization parameters for heating and cooling. This involves:

identifying which mode the zone must be in to stop heating and cooling.
defining the maximum stop duration calculation constant and tolerated deviation.
enabling or disabling learning.

Since the fields are the same for the Heating and Cooling sections except for the modes, all descriptions here apply to both sections.

Heating/Cooling

Item	Description
Heating Mode/ Cooling Mode	Identifies the mode the zone must switch to before heating or cooling stops. > Click the drop-down arrow and select a mode.
Max Stop Duration	Defines the maximum amount of time before vacancy begins that SSTO is allowed to stop heating or cooling. SSTO cannot stop heating or cooling before the time you specify. > Type a stop duration value, in minutes.
Calculation Constant	Displays the value used in a calculation for stop times. The calculation is based on the calculation coefficient, setpoint, and outside temperature. It is recommended you enable Use Learning with this feature. If you enable learning, SSTO automatically adjusts the calculation constant—based on the setpoint and the outside temperature—in order to meet the heating or cooling demands of the zone. > Type the calculation constant value, in minutes.
Tolerated Deviation	Defines the maximum permitted zone temperature deviation from the setpoint. The tolerated deviation is used to calculate stop times. The larger the deviation, the sooner SSTO can stop heating or cooling. If the zone temperature goes beyond the tolerated deviation, the zone is switched to the defined heating or cooling occupancy mode. > Type a value for the deviation; decimals are allowed.
Design Temp (Heating Only)	Defines an outside temperature that, if reached, heating cannot be stopped. For example, if you set a design temperature of 15°F and the outside temperature is 0°F, then SSTO cannot stop heating. > Type a value for the design temperature; decimals are allowed.
Use Learning	When checked, SSTO can learn from the error of stopping the heating or cooling setpoint too early or late. SSTO uses the values from the occupancy period where the setpoints were stopped too early or too late to recalculate the stop times for the next occupancy period.
Reset	Allows you to erase all the SSTO information used to learn from for the stop optimization. > Click this button to erase all SSTO information from the Use Learning feature. CAUTION: This is an irreversible action. When you click the Reset button, you will not be able to retrieve the erased data.