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  1. #1
    Join Date
    Mar 2007
    Location
    Succasunna NJ
    Posts
    574

    Default Response to 'Article'

    In the 'Articles from Inspection Community', Brian posted "Common venting of gas appliances". I tried to post a reply there, but it wouldn't let me, so I'll do it here.

    In the article, it stated the following-
    Category III Appliances in residential use are mostly tank-less water heaters that are vented through the wall with stainless steel. These appliances operate with positive vent pressure and, therefore, cannot be adjoined to a gravity-vented water heater.

    I believe the word 'mostly' needs to be understood better.
    Here in NJ, while not frequently, I do on occasion see Cat III boilers and furnaces. I think it is important that the inspector read the appliance spec plate before reviewing the appliance. Here's photos of what I found in a house I inspected in August.

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    Darren www.aboutthehouseinspections.com
    'Whizzing & pasting & pooting through the day (Ronnie helping Kenny helping burn his poots away!) (FZ)

  2. #2
    Join Date
    Mar 2007
    Location
    Ridgewood, NJ
    Posts
    237

    Default Re: Response to 'Article'

    I see those Weil McClain boilers too, and sometimes they're vented with regular single wall rather than the sealed stainless Z vent.

    Are there any newer Cat III Furnaces around? I've seen some older models.


  3. #3
    Join Date
    Mar 2007
    Location
    Succasunna NJ
    Posts
    574

    Default Re: Response to 'Article'

    As usual, you are correct Neal.

    The furnaces I've seen are older types; it seems all the new direct vents furnaces are 90%. However, the boilers are almost all newer; I believe the one in the photo was 2 years old.

    Darren www.aboutthehouseinspections.com
    'Whizzing & pasting & pooting through the day (Ronnie helping Kenny helping burn his poots away!) (FZ)

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