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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I have a FR Wildwood and it also seemed to have an excessive amount of heat exiting to the outside. I started to do some investigation and looked at the rigid 3x10 duct that runs the full length of the trailer ( no flex on this model). I discovered that the duct was significantly deformed along much of it's length and the kicker was that it ran directly under the table support leg. The in floor support "cup" had crushed it to about 1/2 it's original height. I discovered that the "cup" was at least twice the depth it needed to be to support the table, so I cut it off.
I didn't have access to the rest of the duct from below as I would have to remove all three tanks to get to it. I welded up a series of stents shaped like small I beams and forced them into the ductwork from the grill openings. Fortunately the grill openings were only 4' to 5' apart so I only had to push them about 2'.
I got the duct back to about 90 percent of it's original size.
Now the heater is much quieter, runs far less and heats the trailer better.
Yes, the heat flow from the exhaust port has declined considerably.
I didn't have access to the rest of the duct from below as I would have to remove all three tanks to get to it. I welded up a series of stents shaped like small I beams and forced them into the ductwork from the grill openings. Fortunately the grill openings were only 4' to 5' apart so I only had to push them about 2'.
I got the duct back to about 90 percent of it's original size.
Now the heater is much quieter, runs far less and heats the trailer better.
Yes, the heat flow from the exhaust port has declined considerably.
