Tankless water heater installation question

Discussion in 'Water Heaters and Softeners' started by JimNY, Apr 15, 2019.

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  1. Apr 15, 2019 #1

    JimNY

    JimNY

    JimNY

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    Hello all!

    I am in the process of installing a Rinnai tankless water heater. I checked online that the gas pipe needs a tail to be installed. Please see the photo with red arrow marked. However, I don't know what is the propose of that tail. Do I have to have it installed? Thank you for your helps!


    tankless-water-heater-2.jpg
     
  2. Apr 15, 2019 #2

    voletl

    voletl

    voletl

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    That is a sediment trap
    It is there incase any debris are in the pipe they will gall in the trap instead of into the unit possibly causing damage.

    It needs to be installed
    3 inches or more
     
  3. Apr 15, 2019 #3

    JimNY

    JimNY

    JimNY

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    Thank you so much!
     

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