We bought the unit, as we in our apartment have a poor water pressure and therefore the hydraulic Heater funkiotnierte not correct. An electronic was needed. The price, the mark, an indication of the necessary throughput volume and recessions with respect to the low water pressure have convinced us to buy the water heater. The connection was very easy and self-explanatory, in fact. But now Attention! The water heater requires at start 6 l / min (!) By running water over a long period to even once to jump! Since we do not speak more of low water pressure. Once it is started, "ignites" he in fact even with low water pressure.
We have tried everything - well, first to launch him on a faucet with more pressure and then reassign. But once it is away from the current, it needs again this 6 L / min. So who really has low water pressure, for not working this water heater. We had him therefore return again. In other models it will work - they do not need this start printing. Unfortunately stand so far in any of the recessions and is not specified by Siemens.