Furnace Cycling - SOLUTION w/ Pictures

Marsland wrote:
Very interesting discussion. Thanks bmupton.

My pain is everyone else's gain. I'm glad I could provide a solution.

Marsland wrote:
I too have this cycling issue on my TT (2012). My first thought was restricted air flow as I'm getting, what I consider, low flow from my vents.

I had the same issue. The vent in the bunkhouse got 90% of the air, the other vents barely had any coming out. With the addition of the duct, I can completely close the bunkhouse vent and the rest of the trailer warms up rather well now.

Marsland wrote:
But this issue of the RV manufacturer not installing to heater specs is worth looking into. I have the "Thermal Package" and that includes a higher BTU furnace. Now if the builder didn't modify the non thermal package trailer duct system to compensate???????? I will definitely look at this aspect before dropping the Coroplast and having a look see.

Agreed. When I first started looking at this I didn't for a second believe they would have not followed the install instructions. They were also right on the line for the square inch requirement for supply ducting to allow the heat out of the ductwork. These things together caused the air flow restriction and overheating. The one thing they did have right was the cold air return...they more than met those requirements.

Marsland wrote:
Richard

Brent

Marsland wrote:
PS I do hate that flexible duct work. I know it's easier to install but it is so inefficient with regards to airflow.

Luckily in my case the ducting is straight in and doesn't have to take funny corners. They at least did that somewhat well.

Overall, not impressed with Crossroads attention to detail on the furnace installation. Still like the trailer overall, but they could have been a lot more careful with this item.