Eric
My understanding is that is it truly tankless and has no boiler. It is a Beckett burner, about 30 years old that runs great and gets cleaned etc every year. The water is heated in a coil that runs through the burner. Does that explain the system well enough? The gurgling in the pipes is really something, and I recall it was a simple solution, something about letting more water in, or pressure, or ...
Anyway, your thoughts are appreciated.
Laurie
December 2004