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Flue liner

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Bob_115
Bob_115 Member Posts: 39
in Oil Heating
Does any one in the USA make a ceramic flue liner like the ones made in Germany by Hart? These liners are light weight ,sturdy and impervious to condensates.

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  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Whats the application?

    There was an error rendering this rich post.

  • Bob_115
    Bob_115 Member Posts: 39
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    This would be used as a liner for the installation of a Biasi B10-3 oil fired boiler. The chimney has an 8X8 clay tile liner.
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Wonder why you dont want to use the standard SS liner?
    You know you can direct vent that too.

    There was an error rendering this rich post.

  • Bob Harper
    Bob Harper Member Posts: 1,036
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    Just reline with a 316Ti ss listed liner. That ceramic liner is not currently recognized in the US that I can find. You can direct vent that boiler but you can't direct vent it through that ceramic liner, which was designed for negative vent pressure only.
  • Bob_115
    Bob_115 Member Posts: 39
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    I live in a one story ranch built on a slab foundation. The present boiler is in the middle of the house where the chimney is. The neighbors homes are fairly close and they enjoy sitting in their backyards so I am afraid a direct vent would create a nuisance for them. Do you think this is a realistic view?
    As for the ceramic liner I was just exploring my options.
    Spiritrider
  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
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    Are they sitting outside in the winter?
    I would do the SS liner like I and Bob mentioned-cheaper and usually pretty easy.
    You spend all that money for ceramic and may find no one will allow it without a fight.

    There was an error rendering this rich post.

    SuperTech
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,011
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    Why not use polypropylene? Easier to install and not as expensive.

    https://forum.heatinghelp.com/discussion/165045/polypropylene-plastic-chimney-liner-kits-and-their-hard-pipe-for-venting-condensing-equipment
    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
  • Bob Harper
    Bob Harper Member Posts: 1,036
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    Polypro has a max. service temp. of 230°F. This boiler is rated at 350°flue gas outlet temp. This is oil fired. Most PP are listed only for CAT IV gas.
  • HVACNUT
    HVACNUT Member Posts: 5,841
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    An interior chimney doesnt necessarily need a liner. Less prone to condensation. Just check the terracotta and get a cap.
  • Bob Harper
    Bob Harper Member Posts: 1,036
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    You need a video camera and training to "check" flue tile. Trust me: I do it for a living. Yes, interior chimneys are less prone to condensation but still they must be suitable for the class of service. That is determined by the building code and an inspection. The IRC points you to NFPA 211 for chimneys serving heaters. Chapter 15 in 211 details what, where, when and how to inspect. Do you really think you can look up or down a chimney and confirm not only are the flue tiles solid with no defects but the mortar in the joints is completely filled joints, struck smooth using a medium duty non-water soluble calcium aluminate refractory cement mixture? That is the Standard of Care along with sizing and height above the roof. Still waiting to find that chimney properly built to code. Haven't met anyone who's found that unicorn either.
    STEVEusaPAHVACNUT

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