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Domestic hot water

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Firedragon_4
Firedragon_4 Member Posts: 1,434
in THE MAIN WALL
about 140-150 F and the boiler at 120F. I've done that for 5 years with just an external tankless, no problems.

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  • Jon S.
    Jon S. Member Posts: 43
    Domestic hot water

    If I have a storage tank working with a tankless coil, Do I need the boiler to be warm start? Dose it mater if its cold start since the waters already up to temp in the tank? Or is it just more efficient to run it warm start?

    Thanks,
    Jon
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