Whale space heater

I’m not sure if you mean for using it or draining down or what model you have. You should find all you need in the instruction book or from the Whale website.

If you mean winter storage-

If it is just the space heater then nothing to do. Turn the gas off at the bottle.

If it is the combo one, blown air and water heating then you will need to drain down the system by opening the drain valve on your tank and opening your taps but this location is specific to your van so sorry cant tell you where it is.