when I use standard application package to general a air handle unit program for FX16 Controller. it doesn't have any digital out for EP enable and Morning warmup enable. I saw they also need to use two relay and one PE is implement a purge circuit to implement the morning warmup function in Johnson controller DX9100 . Do I have to modify the program or FX16 controller has more advanced function. it doesn't need the purge circuit to implement the morning warmup function.