AP-690 New Yorker Boiler

Discussion in 'Boiler Forum' started by Jfisherman, Feb 5, 2020.

  1. Jfisherman

    Jfisherman New Member

    Feb 5, 2020
    Can I shut down my New Yorker boiler for a long period of time without causing any problems during the summer season
  2. Dana

    Dana In the trades

    Jan 14, 2009
    Usually it's fine, if "long period of time" means turning it off for a few months (rather than years). Steel boilers are usually somewhat more forgiving than cast iron.

    If it has a tankless coil for serving up the domestic hot water and you're running cold water through it to some other water heater there could be a lot of condensation on the heat exchanger plates.

    The AP-690 is a pretty large boiler, with a DOE output of 131,000 BTU/hr, which is big enough to keep my sub-code 2x4 framed 2400' bungalow + 1600' of insulated basement toasty even when it's -150F outside ( like it was a couple of ice-ages ago. :) )Hopefully yours has the intelligent boiler controls (not simple aquastats), or it's likely to take a serious hit in as-used efficiency due to oversizing. Most homes in PA wouldn't need a boiler even half that size (though some larger uninsulated stone or brick houses might.)
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