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25 Sep 2000 at 5:24 pm
#288055
Harold Kestenholz
Participant
Many manufacturers make these units today because it is such a good idea. I prefer the stainless steel tanks for longevity. Your local plumbing/heating supply has the popular brand they feel is the best.
Yes, they act as a separate zone off the boiler. The R845 or R8445 circulator relay sends power back to the 8124 ZR terminal to fire the burner from the hot water thermostat in the tank.