How many gas/oil appliances can vent into 1 flue?
I am wondering if there is a limit to the amount of appliances you can vent into one flue. I think I remember reading somewhere that you can’t have more than 2 gas appliances venting into the same flue. Today I did an inspection on a multi family. 2 Oil Heating systems and 2 Gas Hot Water tanks all vented into the same flue in the chimney. I can’t seem to find anything in the codes other than Oil and gas can be vented into the same flue, doesn’t list any restrictions. I just want to be sure. Thanks.
