Hi Joe and others,
I am an HVAC Tech specialising in controls for the last 10 years, mostly BMS/DDC of course. I really like your idea of a PLC to control a home HVAC system. I contract myself out to the oil & gas sector for HVAC commissioning, repairs, maintenance etc and most systems offshore are controlled by a PLC (usually AB)
Have you considered the need for a VSD on the supply air fan? If you are going to start closing dampers you are going to need one.
I would also seriously consider using analog dampers, with a feedback, I normally use 0-10V stuff from Belimo.
Just a few ideas for you,
cheers
Charlie
I am an HVAC Tech specialising in controls for the last 10 years, mostly BMS/DDC of course. I really like your idea of a PLC to control a home HVAC system. I contract myself out to the oil & gas sector for HVAC commissioning, repairs, maintenance etc and most systems offshore are controlled by a PLC (usually AB)
Have you considered the need for a VSD on the supply air fan? If you are going to start closing dampers you are going to need one.
I would also seriously consider using analog dampers, with a feedback, I normally use 0-10V stuff from Belimo.
Just a few ideas for you,
cheers
Charlie