problem with aquastat setting for coil

Discussion in 'HVAC Heating & Cooling' started by bbillcee, Mar 9, 2007.

  1. bbillcee

    bbillcee Member

    Feb 25, 2007
    New York
    if i understand correctly the aquastat used on a boiler with a coil keeps the boiler water at a certain temp so when u need hot water it does not have to wait to get hot water

    lately hot water seeems to take a while to come....i had the aqustat at 160 and raised to 170

    it has been very cold here lately....

    would going higher on the aquastat be ok?

    or i'm wondering if its a problem with the aquastat itself

    last year i remeber the hot water meter o the hot water pipe would stay round 120 it stays around 80-90 average

    the boiler and coil is 1 year old
    Last edited: Mar 9, 2007
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Sep 2, 2004
    Retired Systems engineer for defense industry.
    New England
    A boiler coil for domestic hot water needs the boiler to be fairly hot to work well, especially in the winter when the incoming cold water can approach freezing. Often, the thing is designed for 180-200 degrees. Yes, you can adjust it up, but it will increase fuel use, but you'll have hotter water.
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