Programming hints

Whether you do not need one of the macro inputs, connect them to the value specified in the next table.


Inputs

Default values unused inputs

ERCCtrlSig

0

FilteredOATemp

999

InletAirTemp

999

ReturnAirTemp

999

EnRecTemp

999

DiffPressSwitch

0

PlantMode

4



Standalone operation

Set the input "ERCCtrlSig" to the constant value 999 for stand-alone operation.

Inputs

Default values unused inputs

ERCCtrlSig

999


Energy Recovery with pump and valve exercise


Example 1

Pump command with status and alarm inputs, pump and valve exercise

Example 2.

Pump command with pump and valve exercise, without status and alarm inputs

The „ValveControl“ datapoint needs two connections:

  • to this macro for valve control
  • to the “PVE_Exercise” macro for valve exercise (if needed)


The „PumpCmd“ datapoint needs two connection:

  • to this macro for pump command
  • to the “PVE_Exercise” macro for pump exercise (if needed)

The „ValveControl“ datapoint needs two connections:

  • to this macro for valve control
  • to the “PVE_Exercise” macro for valve exercise (if needed)


The „PumpCmd“ datapoint needs two connection:

  • to this macro for pump command
  • to one of the pump command macros (e.g. „PUA_PumpCmdSimple“, „PUA_PumpCmd“)  for pump alarms and pump exercise


You will find the macros:

in the HVAC Application Library – General.