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aquastat on steam return set to maintain boiler temp ?
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sherpa
Member Posts: 2
i could not see any evidence of domestic hot water ever being connected. this system looks original.
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why maintain boiler temp based on steam return?
short cycling steam boiler (old snow man).
found an la409 aquastat from minniapolis honeywell(petro mizer) maintaining boiler temp based on a steam return line below the water line. why? is this for comfort? it can't be fuel efficent.
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It might be
or might've been connected to a heat timer . Or that was the only place to get an aquastat in the water ?0 -
I agree or
it could also be a high limit for a HW zone or domestic HW production.
If for a Heat Timer as Ron suggested, that is to sense the completion of a cycle, a full warming of the system. If the 'stat is on the return side of the Hartford Loop (if there is one, I hope so...) then I suspect the Heat Timer.
If on the boiler side, I would think it is a high limit to keep the boiler from steaming when making DHW.0
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