Hobby Water System
(Motorhomes VAN Siesta Optima, 2015 Model Year)
View official manual on manufacturer's site ↗Frequently Asked Questions
Q: How do I fill the fresh water tank?
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.
Q: How do I empty the fresh water tank?
The outlet valve sits behind either the gas-bottle container flap or the Porta Potti flap - to empty the tank, just raise its lever up to about 90°.
Q: How do I empty the waste water tank?
The waste water opening is on the left-hand side underneath the vehicle - depending on your model, its valve sits right by that opening or is tucked away inside the gas bottle container instead. Unscrew the lid, open the valve, and let it drain away, then push everything back and screw the lid on once it's done.
Q: Does the waste water tank have frost protection?
The tank's built into the chassis and insulated; on some models, switching the heating on at the control panel also directs warm air to it, which is enough to stop it freezing in light frost.