mdkline
New Member
Folks,
I am not a plumber or HVAC guy but have just attempted to put together a new system for a house that I am building. The boiler fires fine and the DHW aspect works well too. However I am unable to get the Taco mixing valve to work. When one of the radiant floor zones is calling for heat the system circulator and the circulator for the zones runs but the TACO Motorized mixing valve flashes green continuously which I believe means "Reduced output (boiler protection activated)". even if I remove the electronci controls on the mixing valve and operate the shaft manually I still don't get any temperature rise at the "C" port. I have double checked that all of the manual ball valves are open and believe that I have the air purged from the various zones ( doesn't matter which one I try) but am still not able to get any haet at the "C" port. The boiler loop connecting to the Taco mixing valve's ports A and B does get hot though. The mixing valve is a Taco I100 C3R-1 and I am attaching a diagram of the system ( hopefully using the correct symbols so that real plumbers/HVAC guys can read it!).
Any thoughts on what the problem is?
Thanks,
Mike
View attachment heating_system_rev1.1.pdf
I am not a plumber or HVAC guy but have just attempted to put together a new system for a house that I am building. The boiler fires fine and the DHW aspect works well too. However I am unable to get the Taco mixing valve to work. When one of the radiant floor zones is calling for heat the system circulator and the circulator for the zones runs but the TACO Motorized mixing valve flashes green continuously which I believe means "Reduced output (boiler protection activated)". even if I remove the electronci controls on the mixing valve and operate the shaft manually I still don't get any temperature rise at the "C" port. I have double checked that all of the manual ball valves are open and believe that I have the air purged from the various zones ( doesn't matter which one I try) but am still not able to get any haet at the "C" port. The boiler loop connecting to the Taco mixing valve's ports A and B does get hot though. The mixing valve is a Taco I100 C3R-1 and I am attaching a diagram of the system ( hopefully using the correct symbols so that real plumbers/HVAC guys can read it!).
Any thoughts on what the problem is?
Thanks,
Mike
View attachment heating_system_rev1.1.pdf