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weil mclain HE

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ed wallace
ed wallace Member Posts: 1,613
in THE MAIN WALL
have a question on the Wiel Mclain HE boiler have a customer that has one that is direct vented using stainless steel piping the stainless is starting to rot out due to condensation is it possible to switch to pvc pipe to exaust the fumes ?

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  • [Deleted User]
    [Deleted User] Posts: 0
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    Weil Pub # 550-141-440/0385WP

    says use 304 Stainless Steel. They have an exception for venting into a lined chimney with another gas appliance. Then galvanized pipe is acceptable. All joints must be sealed w/ high temp silicone.

    No PVC. Highest AFUE 82.4.



  • Larry (from OSHA)
    Larry (from OSHA) Member Posts: 717
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    doubt it

    Ed,

    I have a Weil Mclain HE series 2 which is the induced draft and "improved" model. PCV is not specified for mine and I would imagine not for the one you are looking at either. My stack temp runs over 300*. Is there an issue with short cycling or very low water temps? (Just a couple of thoughts from a non-professsional)

    Larry
  • Randy Tibbits
    Randy Tibbits Member Posts: 91
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    How long is the vent and does it have a drain tee?
  • ed wallace
    ed wallace Member Posts: 1,613
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    he boiler

    the vent is about 15 ft long with 2 45s and 3 90 elbows and a drain tee

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