That's probably the scariest thing I've read in a while...why do some boilers have a dump zone and others just have a high limit cutoff? And some have both, right?coaledsweat wrote: ↑Sat. Dec. 18, 2021 1:00 pmIt's a safety device. An aquastat can fail "on" and that would be a disaster.
My keystoker wants the L4006B and my AA wants the L4006A. I understand the norm. open / norm. closed difference and how the wiring all works. Am I correct in saying these are just two separate ways of preventing a disaster? (one kills, the other dumps)