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Type B direct vent pipe for gas water heater, is sole vertical route (through attic/roof) allowed?

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asked in Plumbing by steve (120 points)
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1 Answer

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Hi Steve,
 
By "sole vertical route" you mean that the only appliance connected to it is your water heater? Well, B-vent is required in attics and at the roof penetrations. Having only a water heater connected to this vertical stack doesn't really matter as long as the installation meets the code: properly calculated diameter, height, elbows, strapping, cap, flashing, etc. 
answered by darekrudy (21,730 points)
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