I need to put my Silvia in storage for about 6 months, whilst I am in between houses. I read the manual and states to empty the water tank and boiler.

I did a search and found this from AM "Get access to the boiler and siphon it out or use a big syringe and some tubing to get most of it out... Then leave it open for a few days to dry out... "

I am unsure how I go about getting access to the boiler to empty it of the water.

Will the Silvia corrode away if I leave it with water in? Could I leave distilled water in it as another option?