.Buildings.Controls.OBC.ASHRAE.G36.TerminalUnits.ParallelFanVVF.Subsequences.Overrides

Information

This block considers the overrides to the setpoints for parallel fan-powered unit with variable-volume fan. The implementation is according to the Section 5.8.7 of ASHRAE Guideline 36, May 2020.

Provide software switches that interlock to a system-level point to:

1. when oveDamPos equals to 1, force the damper to full closed by setting yDam to 0,
2. when oveDamPos equals to 2, force the damper to full open by setting yDam to 1.
3. when uHeaOff equals to true, force the heating valve to full closed by setting yVal to 0.
4. When oveFan equals to 1, force the fan to turn OFF.
5. When oveFan equals to 2, force the fan to turn ON.

Revisions

• August 1, 2020, by Jianjun Hu:
  First implementation.