run out of hot water
Posted by Dick LeCompte on September 02, 2002 at 08:58:59:
I have a WEIL MCLAIN boiler mod AB-366E-HE with a tankless heater. It was installed about 15 years ago.
It has an AQUASTAT mod L8124A,C with the HI at 180 the low at 160 and the diff was set at 10 and I just now set it on 20. I do not know why or how long it has been at 10.
Over the past 18 to 24 months we have been running out of hot water and recovery seems to take forever. THe mixing valve between the cold in and the hot out is closed so there is no cold water added to the hot water. WE do have hard water so could the coils have buildup? Why would I get hot water initially but run out half way thru a quick shower??
Dick L.

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