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Taco Zone Valve ZVC 404-4 Installation Help
I currently have a 3 zone hw Utica boiler with 3 thermostats, 3 Honeywell 4 wire zone valves, 1 24 volt transformer, 1 acquastat relay, 1 circulator pump. Everything is wired and working properly. I would like to eliminate the 24 volt transformer and introduce a taco 404-4 zone valve controller so I can add a common wire to each of the thermostats for smart thermostat upgrades. Based on the taco wiring diagram I am confident I have everything properly mapped out except for the circulator pump. Can someone identify for me where the hot and nuetral, and ground wire from the pump should connect to in the valve controller? I appreciate the help. Thanks