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What size exhaust vent pipe do i need when connecting a 40,000…

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what size exhaust vent pipe...
what size exhaust vent pipe do i need when connecting a 40,000 btu water heater with this furance
Submitted: 3 years ago.Category: HVAC
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Answered in 3 minutes by:
5/27/2015
HVAC Technician: Rick, HVAC Supervisor replied 3 years ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,574
Experience: 40+ yrs. experience as a licensed oil & gas technician.
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Does the furnace have an fan on the exhaust? where will the 2 units connect? a masonry chimney? a B-vent chimney? is the chimney entire indoors (until it goes through the roof) or is it outdoors? how long the the lateral vent before it ties into the chimney? how tall is the chimney? what type of pipe will you use?
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