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Viessmann Vitorond

James Day_2
James Day_2 Member Posts: 191
in THE MAIN WALL
Installed my first 2 Viessmann Vitorond 100's this week.  They are a real nice boiler.  One included the Vitotronic 200 and return injector for a cast iron rad. monoflo system.  Ripped out the monoflo and installed radiant manifolds to supply each radiator with equal supply temp.  The Vitotronic 200 is a real nice control.  The hardest part of the whole job was convincing the home owner that the 80,000 btu boiler will heat his house where there used to be a 180,000 btu boiler.  He still is very skeptical.

Comments

  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,214
    Viessmann

    Do you have any pictures so that we can see your fine work?



    How big is the house?  What is your design temperature where you live?
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • CMadatMe
    CMadatMe Member Posts: 3,086
    Another Cherry Popped

    Welcome to Viessmann James..

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  • James Day_2
    James Day_2 Member Posts: 191
    Viessmann

    Design temp is 6 degrees. House is about 2100 sqft. Homeowner just insulated and replaced windows. Heat loss came up with about 59000 btu's. On a 6 degree day can run 155 deg. water to rads. Set the max supply temp to 160 and low end to 105. Can't wait till the winter to see how much fuel they are going to save.
  • CMadatMe
    CMadatMe Member Posts: 3,086
    Nice and Clean

    Nice job. Now just have to get you away from that tank. :)

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  • James Day_2
    James Day_2 Member Posts: 191
    tank

    i tried to get them on the vitocell 100, but budget got real tight and that was the cheapest tank.  It was hard enough to convince them on why they should change out a tankless and go with a boiler indirect combo.  But they saw the light by the time I went through the benefits of this set up.
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