.Buildings.Templates.Plants.Controls.StagingRotation.EventSequencing

Information

If a heat pump is commanded on in a desired heating or cooling mode:

• The isolation valves for desired heating or cooling mode are commanded open.
• Plants with dedicated primary pumps: The dedicated primary pumps are commanded on when the associated isolation valves are commanded open.
• Plants with headered primary pumps: The headered primary pumps are commanded on as described in Buildings.Templates.Plants.Controls.Pumps.Generic.StagingHeadered.
• Once the isolation valves are fully open (based on nominal valve timing dtVal) and the lead pumps are proven on, the heat pump is enabled in heating or cooling mode.

If a heat pump is commanded off:

• The heat pump is disabled.
• After the time required for the internal shutdown cycle to time out (dtOff to be determined empirically, defaulting to 3 min), all isolation valves are commanded closed.
• Plants with dedicated primary pumps: The dedicated primary pumps are commanded off when the associated isolation valves are commanded closed.
• Plants with headered primary pumps: The headered primary pumps are commanded off as described in Buildings.Templates.Plants.Controls.Pumps.Generic.StagingHeadered.

Revisions

• March 29, 2024, by Antoine Gautier:
  First implementation.