Can you run the furnace while the slide is pulled in?

[Tashajo]

My husband and I live in out TT most of the year. We are leaving first thing tomorrow morning to go from Pennsylvania to Arkansas. I was hoping to get everything winterize tonight so all we had to do was hop in the truck and go, but we are leaving some water in the black tank to clean it on the way home. We can use electric heaters for the night, but I was wondering if we could run our furnace so our black tank would stay warm and not freeze we will have a low of around 25 tonight. We are also stopping about half way and staying in a parking lot to rest for the night and we're wanting to run it then as well.

[Chuck_thehammer]

put some RV anti-freeze in the black tank... Done.
same with the gray tank if needed...

[Tashajo]

We want the water to slush around while we drive and clean the tank. Also want to have some water in the bottom if we need to go on the way home so it doesn't stick.

[bfast54]

Why not just completely drain the black tank .....and then add water...when you get to Arkansas....?????...:h

[Tashajo]

We have one in the floor that will be blocked.

[SoundGuy]

I wouldn't run the furnace if any of the heat registers are blocked when the slide is retracted to it's travel position ... if not then there's no reason you can't.

[downtheroad]

Depends on how many registers the slide will block if it is in....blocking one register should be ok.