Searched past forums for this question, but did not see much in the way of a simplified explanation. Trying to learn how my Harman 52i works. Quite a lot of discussion on here about bad vacuum switches and clogged vacuum lines and such. As I understand it (and I don't fully), there is a fan unit that sucks air from the outside air vent, and blows it (with some force) through the holes in the burn pot to create a blast furnace burn area for the pellets. That same positive pressure in the fire box forces the waste gases out the exhaust vent. I could see where there could be a small positive pressue in the fire box if the air coming in is slightly greater than the air going out. Do I have this right? Is this what the vacuum switch is measuring? Does it follow then that a higher pressue reading (assuming you have a guage to measure it) would mean trouble, as in a clogged vent? Lower reading means a leaker gasket somewhere?
Where does the need for a vacuum hose come in? Does mine even have one?
Sorry for the fundamental questions, but you gotta learn the basics first!
Where does the need for a vacuum hose come in? Does mine even have one?
Sorry for the fundamental questions, but you gotta learn the basics first!
