Water during cold week away

I’ve drained the van down ready for winter. But I’m hoping to get another last trip in, perhaps early December. It will be on a main site with hard standing etc. 

I know that if I refill the system and then have the heating on, this would keep the boiler warm and prevent freezing. But what about the cold water tank?  Will this be okay if I refill it for this holiday and use the van normally e.g. heating, hot water, cooking, some days driving, some days not?  Or do I need to carry a large container of water. I know it’s all dependent on what the temperature is, but I’m not sure what that figure is. 

Thanks
Sally

Sally, I don't think you will have a problem, the plastic the tank is made of will provide some insulation, and the temperature required to freeze the fresh or waste water tank would be incredibly low, probably below -10c for several days. The internal dump valve will operate when the temperature inside the van drops to below 5c, as you will be in the van unlikely this will happen. The main area of weakness is the pipework outside the van to and from the tanks, but unless temperature is below freezing overnight won't be a problem. I did notice the pipes on my 2014 WXL have added insulation, not sure if this is factory fit. I suspect previous owner did it.

That’s very reassuring BB, thank you.

Sally, do you have automatic dump valve on your Sussex? My 2010 has manual valve.

Paulmold wrote:Sally, do you have automatic dump valve on your  Sussex? My 2010 has manual valve.

Hi Paul, yes mines got the automatic dump valve. So a reassurance if I get it wrong.

Need to be very cold indeed for a long time before you had a problem IHMO. Esp with auto dump from hot water.
You'd be more concerned re the cold than the water!!

Driving to work this week over the welsh mountains at 7am my car thermometer was showing 15.5 degrees C outside temperature.

At this rate your more likely to be worrying about flies and what T shirt to wear than anything freezing.......

We carry two 5litre containers  of water all the time we are travelling as well as a full water tank.