Clearances for Furnace Supply and Exhaust Vents
I have a two fold question. I am planning a new deck and the exhaust and return vents for my furnace will be right where the ledger will be. So I can either move them 12″ or so down to clear it but not sure of any codes that prohibit that. My second option is to route them to the side wall where I currently exhaust my power vent Hot Water Tank soon to be an instant Hot water heater. I will be using a concentric vent kit for that. I read the furnace manufacturers install guide and it states 3ft from any operable window but also states something like 6ft from any other gas combustion venting. If i place these around 12″ from the concentric is there an issue with this? pic attached
My second question was shot down by my hvac designer just curious if it has been done successfully or thought of being done. My second floor remodel is getting a fujitsu 18rlfcd(recommended here 1st by Dana and verified by my mechanical engineer). Im having a 13.2kw solar array installed later this summer and would like to go with the fujitsu mid static 30RGLXD for the 1st flr and basement. I wanted to install this inline with my current gas furnace so they can share the supply and return ducts. I would be using the minsplit 98% of the time with the gas furnace only firing up in extreme weather/emergency. My designer recommended either ducting it indepent of the furnace or eliminating the furnace and using existing trunk lines. Space does not permit a second set of ducts. I like the idea of an emergency furnace but am not opposed to elimination if i could use some electric resistance heat with the 30RGLXD, have not found one on the fujitsu website any recommendations or insight is much appreciated.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part