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furnaces and water heater vents


Phillip
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What a day. At both of the house I did today the vents for the water heat and the furnace was connected wrong.

The water heater vents which are the smaller of the vents came in on the bottom.

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Is it my eyes or is the vent material in the 1st photo look a little odd?

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I am having difficulty seeing the trouble with either install. I double checked Duravents installation instructions, and found an illustration that is very similar to the second photos install. http://www.duravent.com/docs/instruct/L204A_apr00.pdf

I was hoping someone could enlighten me as to what I am missing. It is always good to learn something new. :)

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I am having difficulty seeing the trouble with either install. I double checked Duravents installation instructions, and found an illustration that is very similar to the second photos install. http://www.duravent.com/docs/i...pr00.pdf

I was hoping someone could enlighten me as to what I am missing. It is always good to learn something new. :)

Here's the 2006 IRC code cite: G2427.10.4 Here's a link to read that reference: http://www.bcd.oregon.gov/boards/mechan ... 7_IV_4.pdf

Sorry, I don't have the ability to cut/past.

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Here it is from the 2006 IRC

G2427.10.4 (503.10.4) Two or more appliances connected to a single vent.

Where two or more vent connectors enter a common gas vent, chimney flue, or single-wall metal pipe, the smaller connector shall enter at the highest level consistent with the available headroom or clearance to combustible material. Vent connectors serving Category I appliances shall not be connected to any portion of a mechanical draft system operating under positive static pressure, such as those serving Category III or IV appliances.

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Here it is from the 2006 IRC

G2427.10.4 (503.10.4) Two or more appliances connected to a single vent.

Where two or more vent connectors enter a common gas vent, chimney flue, or single-wall metal pipe, the smaller connector shall enter at the highest level consistent with the available headroom or clearance to combustible material. Vent connectors serving Category I appliances shall not be connected to any portion of a mechanical draft system operating under positive static pressure, such as those serving Category III or IV appliances.

Or, as my old friend Doug (a local HVAC tech and, possibly, one of the most politically incorrect people on the planet) used to say, "Just remember that big girls always go on the bottom."

- Jim in Oregon

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