Normally, condensed water is pumped up to the water container where water is collected until manually emptied. It may be more convenient to drain water to an external drain, especially when the appliance is stacked on top of a washing machine.
Use the connecting T piece to reroute the drainage as shown below.
Remove the anti-backflow cap a and disconnect the water container hose b from the T piece.

Attach the anti-backflow cap a to the top of the T piece and connect the optional drain hose c to the bottom of the T piece.

If the drain hose is kinked or pinched, it will not drain properly.