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  1. 10-10-2013, 06:40 AM #1
    Michael R's Avatar
    Michael R Guest

    Default High Efficiency Furnace and Tankless WH Vent and Combustion Air in Chimney

    I have a high efficiency furnace and tankless water heater being installed. The installer has combustion air PVCand exhaust PVC pipes (4 pipes total) running up a chimney flue which is a separate flue next to two wood burning fireplace flues. Is this an acceptable installation? If not, what code should I reference?

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  2. 10-11-2013, 09:01 AM #2
    Michael R's Avatar
    Michael R Guest

    Default Re: High Efficiency Furnace and Tankless WH Vent and Combustion Air in Chimney

    We're coring the basement wall (above grade) and running these directly out. Thanks for replies in the other thread I piggey-backed on!

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