Hi Sunline 1 and dkasten39828
See if this helps.
From reading the responses Sunline may have used a few different vents over the years. In my 2004 T2499, the round vents are held in like this to the hose.
Unscrew the 2 screws on the front of the vent
Pull the vent cover and hose out slightly.
Unscrew the round vent cover from the hose. There are no clamps or screws on mine. The vent cover had 2 molded lugs that act as threads that screw in pitch with the wire imbedded in the hose.
In the T2499 If you lift up your jack knife sofa and slide that Luan sheet out of the way the furnace looks like this.
A few things to keep in mind about the way these furnaces work and vent closing. The Hydroflame furnace is fairly simple, the gas flame shoots heat towards a metal chamber and then funnels the exhaust outside. No actual propane fumes/heat is directly inside the camper environment. The blower housing is sort of part of the heat chamber. When the blower runs it blows across this metal chamber sucking air from inside, the air is heated by convection off the hot metal chamber and the heat goes out the vents to the camper.
Point in all this is the volume of air that has to move to keep that chamber cool enough to not over heat. There is an over temp safety klixon switch on the chamber that if the metal chamber get’s to hot, it shuts down the furnace. Blocking off a little air flow will not have an effect, however blocking off an entire duct or several “might/can” choke the system enough that the heat will rise in the chamber and “might/will” trip that safety switch. I’m not saying yours will, but just a friendly heads up in case yours does trip at least you know why if you choke too much off.
I do agree we roasted in the T2499 bedroom room at night sleeping using the furnace. Basically we did not use the furnace at night because of this. What we did do is experiment until we got it just right, was put the ceramic heater out in the bath/kitchen space on a small stool blowing into the bed room when it was bed time. About 6 feet from the end of the bed 1 foot off the floor. And this was turned down to only cycle to the desired temp. It could still sweat us out of there if the temp was up to much. We winter camp so we had many trips to figure out the exact known setting to not roast or freeze…
Good luck and let us know how it goes.
Hope this helps
John
OH and watch out for this if yours is like the T2499. See the vent on the left side of the couch. In the furnace season I folded the couch flap up and stuffed it under the couch to not block the air suction screen and exhaust of that one vent. Other wise it blows hot air directly on the couch flap verses spread it around the camper.
Flaps down
