I am working on a control system for my effecta boiler system that will turn my Burnam boiler on/off depending on the tank temperature in the 1000 gallons of storage.
I understand DPDT relays and temperature setpoint controllers and such but have a question regarding the signals that come from the zone valve end switches and boiler t-stat itself.
Its my understanding that the end switch on the zone valve is normally wired so as to complete the 24V circuit if any zone/valve calls for heat, thus sending this signal to the relay on the boiler which will start the circulation pump.
Its also my understanding that the thermostat signal going to the boiler is also a 24V signal.
Not being an experienced HVAC guy I would appreciate any information which will help me to better understand the signals that the hydronic boiler receives from the thermostat and end switches on the zone valves so that I can integrate them with my temperature setpoint controller and relays.
Thanks,
Brian
I understand DPDT relays and temperature setpoint controllers and such but have a question regarding the signals that come from the zone valve end switches and boiler t-stat itself.
Its my understanding that the end switch on the zone valve is normally wired so as to complete the 24V circuit if any zone/valve calls for heat, thus sending this signal to the relay on the boiler which will start the circulation pump.
Its also my understanding that the thermostat signal going to the boiler is also a 24V signal.
Not being an experienced HVAC guy I would appreciate any information which will help me to better understand the signals that the hydronic boiler receives from the thermostat and end switches on the zone valves so that I can integrate them with my temperature setpoint controller and relays.
Thanks,
Brian