How does one switch a condenser (ventless) dryer such as the Electrolux edc78550w from collecting the water in the drawer to pushing it through the back pipe?
I've done this before. On the back of my machine there was a drain plug and I simply attached a hose to this and ran the other down the drain in the floor.
On my machine the drawer was located at the top of the machine so there was actually a little pump that pumped the water from below up to the drawer. If you don't have a drain in the floor you might have to use a hose going from this pump.