Hobby Water System

Get the vehicle sitting level, then shut every water tap, switch on the main switch at the control panel, and close the boiler's FrostControl outlet valve. Unlock the filler cap (turning it anticlockwise) and fill up through the fresh water filler neck. Run every tap on hot until the flow's free of bubbles - that's what fills the boiler too - then do the same on cold until that runs clear of bubbles as well, and finish by shutting the taps and the filler neck.

Find the outlet valve tucked away in the back, through a furniture opening, sitting right on the tank itself, and turn its rotating wheel anticlockwise to open it.

The opening sits on the left-hand side underneath the van - turn it to open and let the waste water drain off, then turn it back to shut once it's empty.

It's built into the chassis and insulated; on some models, switching the heating on at the control panel also directs warm air to it to stop it freezing lightly. In harder frost, add a little antifreeze (even ordinary table salt) or empty it completely if the van won't be used.