Propane furnace sending heat to outside vent
Hi, Running our Suburban propane furnace it seems like the unit is pushing as much (or more) heat out of it's exterior vent as it is to the interior vents. At the vents the flow is a gentle convect...
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Sam Spade wrote:harold1946 wrote:Sam Spade wrote:Chris Bryant wrote:
They are both the same motor- one cannot fail without both failing, plus the sail switch is specifically meant to prevent this.
OK on the sail switch; forgot about that.
But since when is there a fan helping the exhaust gasses get out ??
The fan brings fresh air from the outside into the combustion chamber and forces it out through the exhaust port.
Is there really such a thing ?
I don't think my C has this but now I'm gonna have to look.
I've dealt with a LOT of gas furnaces over the years, both in permanent structures and house trailers and have NEVER seen one where the combustion air was not gravity fed.
Maybe I will learn something new today. :)
my sticks and bricks 15 year old gas furnace has a blower for the combustion air on the flue exhaust side. In fact, likely on almost any gas furnace anymore. Blower is on the exhaust side, starts sucking combustion air through the burners about 10 seconds before the gas is turned on, and continues for about 15 seconds after the gas goes off. When off closes a flappper valve on the flue.
