I was curious if anyone has any information on this. The wife and i are looking to move my heatilator ps50 upstairs. I have the manual and where i want to put it, it will have the clearances required in the manual. What i m wondering is since i know what clearances are needed and in which way the vent pipe needs to be installed, do i need a fire marshall or building inspector to come out before hoand. I have a friend that does thsi work and i have the mechanical skill to do this but wondering in what order things need to be done to bring it upstairs.