Vent pipe size determination is rather complicated.

来源: borisg 于 2011-11-18 17:51:51 [] [博客] [旧帖] [给我悄悄话] 阅读数 : 0 (209 bytes)
回答: 10 ft exhaust pipe is not up to code? 由 比花花还花 于 2011-11-18 10:08:19

Generally the maximum and minimum sizes and minimum height depends on the type and BTU of furnace and water heater. Your local code may also require type B pipes on all non-high-efficency installations.

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