Rinnai 223187 21” Non-Condensing Horizontal Termination Diverter Kit

- Item #: BCI1840452

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21” Non-Condensing Horizontal Termination Diverter Kit

Rinnai's unique Ubbink concentric venting system provides maximum performance, safety, and ease of installation. Compatible with all indoor Rinnai water heater models, except the 98 series which utilizes separate intake and exhaust venting.

Plastic Outer Vent For Intake

  • Easy To Cut Compared To Stainless Steel
  • Dent And Impact Resistant
  • Corrosion-Proof
  • Non-Flammable Material (ul94-V0)
  • Seamless Extruded Materials
  • Casted Elbows And Adapters
  • White Semi-Gloss Finish (Eu Ral 9016)

Aluminum Inner Vent For Exhaust

  • Easy To Cut Compared To Stainless Steel
  • Stable, Thick-Walled Material
  • Dent And Crease Resistant
  • Not Affected By Scratches
  • Seamless Extruded Material
  • No Weld lines
  • Thick-Walled, Casted Elbows And Adapters
  • Lightweight
  • Seal Rings With Maximum Temperature 400°F (Approx. 200°C)


  • Zero Clearance To Combustibles
  • Single Penetration Through Wall For Both Intake And Exhaust
  • GSA Approved
  • Easy Assembly
  • May Be Required By Local Or State Code
  • Professional Installation Recommended
  • Includes:
    • (1) 90 Degree Elbow
    • (1) 21" Horizontal Termination Pipe
    • Rubber Wall Plate


  • Length: 21"

Additional Rinnai Links

Our SKU: Rinnai 223187

This product is listed under the following manufacturer number(s):

  • Rinnai 223187

*Denotes a finish or option that has been discontinued

Manufacturer Resources

Installation Resource Center

Whether you are installing the product yourself or hiring a professional, our installation Resource Center has everything you need to get your project done. Visit the Installation Resource Center to get started.

Rinnai 223187 Reviews

Rated 5 out of 5 by from great value fit prefect and very easy to install
Date published: 2014-11-28
Rated 5 out of 5 by from Well designed and strong Arrived in short order and in good shape. It was well packaged. It looks and feels very sturdy and I look forward to many years of trouble-free use.
Date published: 2014-04-25
Rated 5 out of 5 by from Just right Purchased this for my Rinnia RL94iP Works like it should. Double check with Rinnia Enginners before installing. Just to make sure. Got the green light form them.
Date published: 2013-01-02

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