Supply Air Setpoint Reset in CCP III Delivered VAV System

Issue:

Supply Air Setpoint Reset in CCP III Delivered VAV System

Resolution:

 

From VAV-SVU01A-EN, CCPIII Operator Guide, page 37:

Supply Air Setpoint Reset

The supply air temperature setpoint can be reset based on zone temperature, return air temperature, or outdoor air temperature. The reset type can be selected and enabled, and the operating parameters can be set through the operator display or PC software. During setup a reset setpoint and reset amount are provided by the operator.

Reset from zone air. If the zone air temperature falls below the reset setpoint, supply air setpoint reset begins. As the zone air temperature falls below the reset setpoint by 3F (fixed), the supply air temperature increases by the reset amount entered by the operator (5F default).

Reset from return air. If the return air temperature falls below the reset setpoint, supply air setpoint reset begins. As the return air temperature falls below the reset setpoint by 3F (fixed), the supply air temperature increases by the reset amount entered by the operator (5F default).

Reset from outdoor air. If the outdoor air temperature falls below the reset setpoint, supply air setpoint reset begins. As the outdoor air temperature falls below the reset setpoint by 20F (fixed), the supply air temperature increases by the reset amount entered by the operator (5F default).

 

 

Notes:

 

Changes:

 

Other Question/Problem/Cause Statements:

• supply air temperature reset

Facts:

• VARITRAC III CENTRAL CONTROL PANEL (CCP)
• VariTrac III Central Control Panel (CCP)

Original wave: wave17515