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Water Line Question...

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VH2001
VH2001 Member Posts: 1
in THE MAIN WALL
This may be a silly question...but, I'm looking to replace my old boiler, with a new model (Triangle Tube Prestige or Viessmann VITODENS 200).  My main water line, into the house is only 3/4" (not 1").  Does it matter if the boiler is looking for a 1" hookup, or would I need to look for a boiler with a 3/4" line?



Let me know if it matters.  Thanks in advance!  

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  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Are you sure....

    You're not looking at the supply and return size piping that goes to the boiler?  The domestic sizes are usually 3/4", and to/from boiler 1" or 1 1/4".  On the boiler side you have to follow the manufactures recommendations, on the domestic size you can reduce down.

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  • STEVE PAUL_3
    STEVE PAUL_3 Member Posts: 126
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    Don't worry

    About the size of the water feed to the boiler. If you install a 1/2" water supply line to the boiler, it will be more than sufficient. Just be sure to include the proper back-flow protection and pressure reducing valve.
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