In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
I have 2 Burnham Alliance 55 piped to Apline condensing boilers. Both run cold after running a shower for 10 minutes. I understand that it maybe that I'm drawing 5gpm that the system can't keep up (as advertised) but here is my question....the water from the tank has run cold even though the supply & return pipes are too hot to hold. Why is there no heat transfer? Shouldn't the water be at least lukewarm?Seems that the tank only heats when there is no demand?