I have a couple of questions about how to install the wood stove. The stove will be sitting 18" in front of an existing fireplace, 36"w x 29" h. I will line the chimney and also insulate the liner. The stove pipe will connect to the liner with a Tee. The stove pipe will be 3" below the top of the fireplace and 9" from the wood trim. Can this meet code? Do I need double walled pipe or a heat shield? The mantel will be 29" from the topof the stove and comes out 6". Does the stove need to be set back an additional 6" with the 18" required. Thanks. I tried to attach a sketch of the install.