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bob young
bob young Member Posts: 2,177
REPLACEMENT STEAM BOILER .ea too confined for independant water heaters. not familiar with sizing method to provide indirect domestic tank , etc. 14 families. need formula for additional btu load to add to steam boiler. thanx, bob nyc


  • Snowmelt
    Snowmelt Member Posts: 1,387
    edited June 2014
    We need some info

    John Barba had a nice webinar on sizing an indirect.

    I suggest you view it.

    For the formula to find out how many gallons of water your going to use go to hot water.com

    If you want tankless then see me
  • JStar
    JStar Member Posts: 2,752

    I would be cautious about adding any BTUH's to the steam boiler. You'd be surprised at just how effective an indirect tank will be, even at lower input BTUH's.

    At 14 showers, I would look for a First Hour Rating of 240. If your total BTUH's are close to 200K, you'll be fine not adding any extra.