.Buildings.Templates.Plants.Controls.HeatRecoveryChillers.ModeControl

Information

Mode control

If the following equation is true prior to enabling the HRC, set the control mode to heating. Otherwise, set the control mode to cooling.

QChiWatReq_flow > QHeaWat_flow * (1 - 1 / COPHea_nominal)

Write mode via the chiller’s BACnet interface prior to sending the chiller an enable command.

Setpoint

When the control mode is cooling, the active setpoint shall be the CHW supply temperature setpoint. When the control mode is heating, the active setpoint shall be the HW supply temperature setpoint.

Details

The condition "prior to enabling the HRC" is evaluated in the block Buildings.Templates.Plants.Controls.HeatRecoveryChillers.Enable.

Revisions

• May 31, 2024, by Antoine Gautier:
  First implementation.