Product is good and does what it should. Aufgeschmissen you, however, if you want anschliesen the device directly to the waste water. In my application, the dehumidifier in laundry / ironing room is in the basement. Due to the higher humidity of the water tank after 1-2 days was always full. This is of course annoying. I have therefore taken the opportunity to connect the device directly to the sewer. To this end, there is no proper explanation by the manufacturer. The advice of the lady on the phone was influenced primarily by ignorance, another interlocutor did not exist. I then resolved itself with logic and try the issue.