Hi, Folks, I am trying to install the 50000 BTU Weather King gas furnace on my rear house. Before, there were only space heaters in that house, so I have to "design" the ductworks and install the whole system. I can never image that it is really complicated for me to finish this project. I have a few questions hope someone can help me.
How can I determine the size of the return air duct? Where should I put the opening of the return air duct, do I have to connect the ductwork to the furnace itself? Or can I just let the return air duct connect to the furnace room (4'x4')?
Thanks