O.K. HVAC Gurus, I have hit a wall on this one. The four photos below show a Premier Furnace Company, Model# GHB75D-10, Circa 1983. The pictures are what appear to be some type of draft hood arrangement on the furnace. I’ve never seen that before. This is shooting up into a 14" X 18" ceiling access hole at the bottom of the draft hood (???). There was no method to mount a plate on the open bottom of this assembly and no plate around anyhow.
Educate me!! Was that suppose to be a type of draft hood???
Premier Furnace Company has been out of business for some time now. Anyone know of an online source for their manuals?