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Posted by Mike on October 11, 2005 at 22:24:55:
In Reply to: Re: Insufficient Hot Water When Heat is turned on.... posted by joe brix on October 03, 2005 at 21:15:16:
: many steam boilers have a tankless coil to heat domestic water. The boilers kept at around 160-180 degrees all year round. But when you start using steam the cooled condensate returns to cool the boiler down so yo might notice cooler hot water. The aquastat might be set too low and you need a higher min temp in the boiler durring heating season. Also make sure there's enough water in the boiler.
You should have a triple acting aquastat that reverts priority to the DHW in a situation when both are needed.