PRCC_PreCtrlClg
The PRCC_PreCtrlClg macro provides:
- Cooling or changeover pre-control with optional pump, valve outputs.
For changeover control you need both, the cooling and the heating pre-control macros.
- Options to connect external bus systems to the pre-control circuit
See the chapter Programming Hints for the procedures to connect SERVAL (XL10), LYNX (SPYDER) or MERLIN (IRM) controllers for BACnet systems, programmed with CARE and AX systems programmed with COACH AX.
The macro must be connected to the “HVAC_Mode” output of the macro “SWM_SummerWinterMode” where the outside air temperature limits for heating and cooling control can be set.