got a new boiler and the pressure gauge drops erratically from time to time locking the boiler out until the manual feed valve is opened for a second and pressure is restored. Air eliminator is open and very sure of no leaks. Could this be a trapped air pocket in the system that once in a while works its way near the gauge or limit switch to drop pressure?? could use some advice
Sounds like you need to call a service tech. manually feeding water to a closed loop water system is not right. By introducing untreated water continuously will cause sediment build up leading to heat exchanger failure.Boiler should be equipped with a lwco and a auto feed valve. So in the event of low water it should temporary rectify issue. You my be heading for bigger issues later on
its a munchkin 80m, the pressure will be good for days or weeks then out of the blue the pressure is a zero and its locked out. i'll open the manual water valve for a split second then the pressure jumps to 12psi and fires. happened maybe five times this winter
was your fill valve and backflow changed when they installed it? how hard is your water? this changes everything at first u said as it ran the pressure would drop every heating cycle. Is your fill valve set properly?
You should never have to manually operate the auto-fill valve. Minute leaks will invariably allow the boiler pressure to drop over serveral weeks. The auto-fill is not responding. Call your installers back and have them change it out or properly adjust it while it's in warranty.
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