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joda Member Posts: 2
Taking a burnham oil fired boiler tankless off of domestic hot water,

We are installing a 50 gal electric hot water heater.

What should the triple aquastat be set to?

It is a Honeywell L8124A triple aquastat. Only need it for heat now.


  • TonyS
    TonyS Member Posts: 849
    It should be

    Replaced with a standard aquastat. Otherwise the boiler will maintain a minimum temp.
  • Paul Fredricks_3
    Paul Fredricks_3 Member Posts: 1,549
    I say

    Let it maintain a minimum temp. There's still a coil in that boiler and it's gasket will start to leak when the boiler gets cold. Not to mention that a minimum temp will keep any summer condensation at bay. I'd turn the low limit down to where I think 100° would be, then check it later to see if that's what it's maintaining. At 100° it will use very little oil to maintain temp.
  • Alan R. Mercurio_3
    Alan R. Mercurio_3 Member Posts: 1,617

    I'm with Paul on his thoughts.
    Your friend in the industry,

    Alan R. Mercurio
This discussion has been closed.


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