Issue overview

A user test file shows that the Coil:Cooling:WaterToAirHeatPump:VariableSpeedEquationFit does not turn on when using set point control. A refactor of the fan model may have inadvertently disabled setpoint control for UnitarySystem. the top right figure shows the set point temperature and outlet air temperature not tracking well. The lower left figure shows that the cooling coil does not turn on.

Bug description courtesy of Trane North America.

Details

Some additional details for this issue (if relevant):

• Platform (Operating system, version)
• Version of EnergyPlus (if using an intermediate build, include SHA)
• Unmethours link or helpdesk ticket number

Checklist

Add to this list or remove from it as applicable. This is a simple templated set of guidelines.

• Defect file added (UnitarySystem_VSHeatPumpWaterToAirEquationFit_SPControl.idf.txt)

• Ticket added to EnergyPlus Defect Complexity (Github Project)

• Pull request created (the pull request will have additional tasks related to reviewing changes that fix this defect)