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Small home addition question

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Itscold321
Itscold321 Member Posts: 2
edited October 2019 in Radiant Heating
I have only one 300 foot run with 1/2 Pex for a small addition in my home.(concrete addition-4 inch slab)...I plan to use a 35,000,000 BTU 30-gallon hot water heater. I also plan to run 50/50 Glycol-water. What would be the recommended taco pump or Grundfos pump? I live in Alaska and in an area where it does get down to 30 below at least a few times a winter. But most often we experience temperatures around freezing.

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  • Steamhead
    Steamhead Member Posts: 16,856
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    Itscold321 said:

    ...I plan to use a 35,000,000 BTU 30-gallon hot water heater.

    Never heard of a residential water heater with that much gas input.................

    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • Itscold321
    Itscold321 Member Posts: 2
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    Opps,,,it was late at night,,sorry..35,000 BTU
  • hot_rod
    hot_rod Member Posts: 22,158
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    Any brand, small circulator speed 1.
    Check the chart of the brand of glycol you intend to use 37- 40% should be adequate, that is a lot of glycol when you use a tank style heater..
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream

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