Bard TCS22-***-003 manual Free Cooling, Room Occupied YES/NO, Outdoor Enthalpy

Setpoint will be 70o the same as the fixed Dehumidification Heating Setpoint.

This display item indicates whether outside conditions are suitable to allow the use of outside air to provide free cooling inside the structure. The controller calculates the either outside temperature or enthalpy from the Outdoor Temperature and Outdoor Humidity and compares this value with the Free Cooling Setpoint. The Free cooling setpoint can be either a dry bulb temperature or enthalpy. This is user selectable. If outdoor temperature or enthalpy, whichever the user has selected, is less than the Free cooling setpoint then Free Cooling is ON. If the temperature or enthalpy of the outside air is more than the Free Cooling Setpoint then Free Cooling is Off.

5.3.1.8 ROOM OCCUPIED YES/NO

This display indicates the status of the After-hours Occupancy Override Button. If the display shows "NO", the controller is in the unoccupied mode and the unoccupied setpoints prevail. If the display shows "YES", the controller is in the occupied mode and the occupied setpoints prevail. Depressing the Occupancy Override Switch on the Zone Temperature Sensor for one second triggers the Occupied mode for two (2) hours.

5.3.1.9 OUTDOOR ENTHALPY

This outdoor enthalpy displays the calculated outdoor air enthalpy. The outdoor enthalpy is calculated from the outdoor temperature and outdoor humidity sensors and is used to determine wether the air is suitable for free cooling or not.

2100-444-003A

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