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Hello, I know there's a formula to calculate pressurization fan for a stair well, but this formula requires a lot of detail information that I don't have e.g. # of doors, leakage area, walls and ceiling surfaces, etc. Is there a simpler equation that can be used with only cu-ft of the the...

Yes, I guess it's too risky, I should talk to owner to have separate vents for gas fired appliances terminated on the roof.

Thanks Bimr, I have fairly small size commercial kitchen oven and type B flue vent is good enough. I wonder if I could get away from separate vents and terminate flue vent in stove exhaust hood and discharge to roof thru kitchen hood?

Hi, I'm designing a kitchen ventilation system for a restaurant. We have one stove, a gas fired pizza oven and a gas fired proofer. I'm putting an exhaust hood for stove. The owner doesn't want many roof penetrations and is asking to discharge flue vent from oven and proofer to exhaust hood...