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constantly running circ

jonny88 Member Posts: 1,139
i recently took over our inlaws house,there is an oil fired american standard boiler with coil set at 140.house used to runout of hot water so they added a storage tank,with a 006 bronze taco pump circulating the water between coil and tank.on the bottom of storage tank there is an aquastat set at 140.pump doesnt stop running.what is the correct setting for both aquastats,shouldnt there be a difference.thanks in advance


  • billtwocase
    billtwocase Member Posts: 2,385
    I would

    set the boiler to maintain closer to 160 degrees. Chances are the thermostat for the aquabank is set for 125-130. That is too close to 140. If the tank still does not satisfy, then you either have a poor install, or a very bad coil. Is there a mixing valve on the coil outlet?
  • jonny88
    jonny88 Member Posts: 1,139
    no mix valve

    it is a horrible install,there is even a piping diagram on unit which wasnt followed correctly.im not to concerned as it is coming out soon,i was just curious as to what the settings should be,thanks
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