Wood Stove Chiminey Clearance
According to NFPA 211 Standard for Chimneys, Fireplaces, Vents, and Solid Fuel-Burning Appliances, you'll start with 36" clearance all the way around.


  


Then you can use one of the methods described, to reduce the required clearance.


  


Or you can follow the manufacturers installation instructions, which for a listed and labeled device supersede the code requirements. 



As for the connector, you'll start with 18".


  


Then apply any reductions.