Dry Bulb Changeover Setpoint | Bard TCS22-***-003 instruction

Setpoint by .25 BTU / lb. until the Maximum allowed Setpoint of 60 BTU / lb. is reached. Clicking on the Left arrow will decrease the Enthalpy Setpoint by .25 BTU / lb. until the Minimum allowed Setpoint of 5 BTU / lb. is reached.

This setpoint may or may not be active and visible depending on the economizer changeover scheme chosen in the Misc. tab.

6.4.2.10Dry Bulb Changeover Setpoint

The Dry Bub Setpoint is used to determine if the outside air is suitable to use for cooling the structure. The default value for this point is 48 Fo.This will ensure that the economizer will never bring in outside air that is too warm to provide cooling.

Next to the Dry bulb Changeover Setpoint value is a scroll bar. Clicking on the Right Arrow will increase the Enthalpy Setpoint by 1.0 degree until the maximum allowed Setpoint of 80 degrees is reached. Clicking on the Left arrow will decrease the Dry bulb Changeover Setpoint by 1.0 degree until the minimum allowed setpoint of 40 degrees is reached. This setpoint may or may not be active and visible depending on the economizer changeover scheme chosen in the Misc. tab.

6.4.2.11Dehumidification Setpoint

The dehumidification setpoint requires an authority level of Supervisor or higher to change. Anyone may view the setpoint value. The Dehumidification Setpoint Range is from 50 to 70 % RH. The default value is 50 % RH.

6.4.2.12Continuous Blower Enable

The Continuous Blower Enable will run the lead unit blower continuously for the entire

Lead/Lag period. This means that one of the blowers will always be running. The Continuous Blower operation is either set to Yes (with the box checked), or set to No (with the box unchecked).

6.4.2.13Active Cooling Setpoint

The Active Cooling Setpoint displays the current cooling setpoint that the controller using to determine whether cooling is required or not. If the Zone temperature is above the Active Cooling Setpoint, Stage One Cooling will be on.

The Active Cooling Setpoint will be one of three values. If the controller is in occupied mode, the Active Cooling Setpoint will be the same as the Occupied Cooling Setpoint. If the controller is in unoccupied mode, the Active Cooling Setpoint will be the same as the Unoccupied Cooling Setpoint. Occupancy is determined from the After-hours Occupancy Override Button located on the temperature sensor on the front of the TCS22. If the controller is in Dehumidification mode, the Active Cooling Setpoint will be 73o the same as the fixed Dehumidification Cooling Setpoint.

6.4.2.14Active Heating Setpoint

The Active Heating Setpoint displays the current heating setpoint that the controller using to

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TCS22-***-003 specifications

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