To empty onboard water tank in a Bailey Cordoba?

https://www.baileyofbristol.co.uk/touring-caravans/unicorn-series-3/unicorn-series-3-cordoba/

Thanks for the update KjellNN.  It's not page 36 in our 2016 manual but have found it on page 40.

It's 16b Unicorn III Twin Axel Water System.

First I obviously had too much going on to find any reference to the on board tank, but even the instructions I've found are not as clear as they could be  - it assumes you know where the heater compartment is - though to be fair if you were buying from a dealer it would all be explained.

I don't mind a bit of research to try and find things out, but my concern right now was to be sure there was no water in the van over this winter - which I am now sure about. :0)

Actually here in Pembrokeshire we don't really get low temperatures (except during the beast from the east when we were staying in our motorhome in Milford Haven boatyard in Jan 2018 while trying to buy the place we are in! - we had no water in the van thank goodness and used  bottled water and waste water draining straight to water collection outside.  Even the fresh water tap in the boat yard froze so we had to go to the shower block to collect fresh water and there were icicles on the bottom of the van!)

On my Lunar Delta there is an inline tap that you turn to drain the onboard water tank. My older model Lunar Delta had a blue tap positioned under the caravan directly below the tank. A much easier job to use as well.

Thanks ADP1963.  I now know which valve is the inline valve/tap to drain the onboard tank and happy that is open.

Previous owner had only used the van once (wife is now ill hence the sale), without using the onboard tank so wasn't sure it was all set correctly, as when I asked them about it they just said they had never used it.  I just wanted to be sure for this winter. :0)

Have you had Alde heating before?

If not, read the instructions carefully, and maybe download the full thing from the Alde website.    What colour of fluid does it contain?  Blue should be changed every 2 years, pink every 5 years.   If you need to change, put in pink.

Thanks, Nav, it was just for future reference that I  asked my question. We use the van all year round, but leave the taps and valve open during the winter when parked up between trips. I've never tried running the pump after letting out all the water by way of the yellow valve outlet prior to heading home at the end of a trip.

Annegp......glad that I could help if yours is a similar system. I will just add that as my holding tank is situated in the wardrobe at the nearside rear of the caravan I do make certain that I do drain down every time I travel, otherwise the stability would be horrendous.

That's where it was on my Lunar. One year I filled it & the hot water tank with a sterilising solution .... it was only when we got to our site and I went to fill u with water that I realised it was still there. I'd thought it had towed a bit odd! 

Andy, if you had not had your Merc or Senator you would have known it as it would be the tail wagging the dog!. I forgot to drain down once years ago and that was with a twin wheeled Delta. I soon stopped and drained the tank.

I was towing with a 3.0 Omega at the time. The tail wasn't particularly wagging the dog, but I was aware that things were a little different. We'd not gone too far from home and travelled on small A & B roads so the caravan was jiggled about anyway. 😉