Heat & Smell escaping thru Vent in Closet while traveling
We have a 2018 Tiffin Allegro Bus 45MP.
We've noticed two things while driving down the highway Heat and Smell.
First Heat : The back of the bus get 88 to 95 after about an hour and the outside temp has been 55ish. during the last trip while the WAF drove and I crawled over the bed to check out the rear of the bus I discovered the vent just below the washer/dryer which covers the furnace heat exchanger was pouring out hot air as if the the fan was on. On the next trip I blocked the vent in the closet and the vent under the mirror this made a huge difference in the temperate at the end of a 6 hour drive. We no longer have to run the generator to cool the bus while traveling.
Question 1: is there a valve to turn off the heat loop? While traveling the engine is heating the water which runs thru the furnace heat exchanger. I think this is the source of the heat vs engine radiating heat thru the floor.
Question 2: Does anyone have a photo of the space under the washer/dryer where the furnace heat exchanger sits? I believe while traveling the cavity holding the heat exchanger is getting pressurized venting air into the closet. I want to see how or where to seal this cavity.
Second Smell : I believe the Engine Regenerates when we climb mountains I monitor the exhaust temp thru the BlueFire app to keep it out of Red line temp. when the temp hits 980-1100'F we begin to smell burnt odor . I believe the fumes are being pulled into the cavity where the heat exchanger sits , then is pushed fumes inside the coach . For now we are blocking the vents while we travel. I also noted when we smell the odor we don't get a CO alarm to go off.
Question 3 has anyone experienced this issue with the vents in their bus?
2018 Alegro Bus 45MP