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Boiler short cycle?
dmk
Member Posts: 23
My oil boiler seems to be short cycling. Triple triple aquastat High/low is 150/190 and diff @10, boiler fires and shuts down when gauge reads around 170, then turn on again 10 seconds later rarely getting up to the high set point. Would this indicate a bad aquastat? I'd say maybe the gauge is bad, but that doesn't explain the short cycles
0
Comments
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He didn't say the make, but Honeywell triple aquastats have a 10* hi-limit differential preset. The adjustable differential works around the lo-limit.0
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It is a honeywell. Not sure what the function of the diff is. Can u explain? House is approx 2k sqft, boiler is Burnham RS-110, 1st floor and 2nd floor zones with internal coil that feeds dhw storage tank. This is my 2nd winter in this 25 year old house, so it's all fairly new to me. Would the diff be on 10 for efficiency?0
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Would a smaller nozzle with same spray pattern help with short cycling? On average, how many times would you expect a boiler to fire throughout the day? And does the boiler fire off of return water temp? Thanks for all the help in advance!0
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