I planning to purchase a used Leisure LIne Pioneer and have several questions about the power vent. I know that the power vent is supposed to be located 4 feet away from the window, but is this still a requirement if the window is a permanently closed and sealed window? My house seems to be purposefully designed to prevent the installation of a chimney, or the convenient location of a power vent. It would be much easier for me to place the stove if the power vent could go closer to the window. My second question depends on the answer to the first, but here it is: Does it matter significantly if the reducer (from 6inch to 4inch) for the stove pipe is placed at the stove or placed at the power vent? If it is placed at the stove it would mean a 3 foot run in 4 inch pipe to the power vent. Also, would a baro damper in 4 inch pipe operate differently from one in 6 inch pipe? I would think that my manometer readings would need to be taken from 6 inch pipe in order to get the proper reading. I would appreciate any help I can receive because this stove MUST work in my house...oil is simply beyond my budget this year. Thanks!