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What is the maximum type vent diameter size to vent an

Customer Question
What is the maximum type...
What is the maximum type b vent diameter size to vent an Atmospheric Natural Gas Water
heater ... 50 Gallon 40k btu unit located in basement venting thru 2 story house roof?
Note there is approx 6 feet of horizontal pipe with upward slope before getting to main vertical B Vent.
Submitted: 2 years ago.Category: HVAC
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Answered in 5 minutes by:
1/23/2016
HVAC Technician: HVAC Guru, HVAC TECH replied 2 years ago
HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 18,757
Experience: 20yrs in the HVAC industry with certificates and degrees.
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Hello and thanks for using this service, if you have been waiting do not worry or get upset I am just one of the techs on here and I try to get to as many customers as I can and I just picked up your question now. Please give me time to respond sometimes I get your replies late so there may be a delay in my response.

Yes the 6" B vent is more than fine.

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