Electrical c

  1. The drive of the pump is a DC motor.
  2. For AC operation a transformer is integrated in the module cap.
  3. Due to protection class 2 a protective conductor (ground wire) is not required.


Danger! Danger of electrocution!

  • Have all electrical work carried out by qualified personnel only. 
  • Disconnect motor from power supply and ensure it cannot be reconnected unintentionally.
  • Check if pump is de-energized.


Warning! Fire hazard due to electrical ignition!

  • Make sure that the pump is only connected to the power supply specified on the name plate.
  • A permanent power supply is possible, alternatively use a mains plug with IP 44 rating (provide isolator that separates all poles).
  • Rundkabeldurchmesser 5 – 8 mm
  • Cord diameter 0.75 – 1.5 mm2
  • Strip cords by 8.5 – 10 mm.
  • Twist wires (no wire end sleeves, no tinned ends).


  • Undo module cap with a Tx10 screwdriver.

  • Loosen the cap nut and insert cable.

  • Push forward the yellow lever, insert cable wires into red clamp, then release the yellow lever again.

  • Arrange the cable properly inside the module cap, then refasten the cap nut.

  • Refasten the module cap.

  • For final venting alternately turn the pump on and off …

  • … and open and close hot water tap several times …

  • … until noiseless pump run is achieved.