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Heating a Kitchen with a Combi Boiler or something else.

virtualplumber
virtualplumber Member Posts: 35
edited August 2016 in Radiant Heating
I have a customer with a kitchen. Wood floor, Basement. Cast Iron Baseboard. It is cold in the winter time. OHIO. They would like radiant floor heat. I did a Heat Calc without the baseboard it is only 13K BTUs. They would also like a tankless water heater but Not necessarily essential. What would you recommend as a heat source for the kitchen? We can run pex under the floor in the basement. The minimum on the Navian is 18K BTU's.

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Comments

  • SWEI
    SWEI Member Posts: 7,348
    Just that load? Electric mat.
  • virtualplumber
    virtualplumber Member Posts: 35
    Finished floor. finished room.
  • SWEI
    SWEI Member Posts: 7,348
    How would staple-up tubing change that? Either way you have to overcome the R-value of the flooring (think ODR) and add insulation.
  • virtualplumber
    virtualplumber Member Posts: 35
    edited August 2016
    I thought mats were designed to be installed before the floor is laid.
  • Steamhead
    Steamhead Member Posts: 17,846
    Is the baseboard sized to the calculated heat loss? Does it have properly-sized supply and return piping? What water temperature does the system use?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • kcopp
    kcopp Member Posts: 4,575
    simplest thing to do is run a separate zone off the existing boiler. Loop the baseboard that is there to get it out of the way.
  • hot_rod
    hot_rod Member Posts: 25,193
    The UltraFin product is good for that type of retrofit if the load numbers work out. No need to use a mixing valve. Of course you need access from below.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream

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