It could either go out the unused walled in chimney that the oil furnace was vented through or they could cut a hole in the concrete block wall and vent it out the side of the house.
Venting gas furnace thru wall.
The dvag11l direct vent wall heater from ashley the dvag11l direct vent wall heater from ashley hearth products makes the perfect solution for zoned heating.
The fix was to use double wall b vent with an external power venter.
The space saving direct vent furnace design mounts to an exterior wall and the adjustable vent assembly adjusts to fit walls from 4 1 2 in.
Not familiar with your specific furnace but there were literally thousands of 80 furnaces horizontally vented through sidewalls in the late 80s and 90s.
Most old gas furnaces use such a mechanism while modern furnaces use the b pipes.
Unfortunately the grey ultravent pipe used wasn t up to the job and was recalled.
Gas wall heaters rinnai gas wall heaters basement heating system forced air wall floor wall vent.
The basement ceiling is about 6 1 2 or 7 feet high.
A direct vent will directly throw all the air into the atmosphere.