Vaillant 06-5084 Instrucciones De Montaje página 16

Removing jumper W 18
Jumper W 18 only needs to be cut on units with hybrid circuit
board no. 25 29 60. You can determine if your unit contains this
circuit board by the outer contour of the switch box (see the figure
below).
G Make sure that the unit has been unplugged from the electrical
supply.
G Remove the screws (1) and pull the switch box forward.
G Remove the middle circuit board (2, no. 25 29 60).
G Cut through jumper W 18 (3) on the middle circuit board.
G Reinsert the middle circuit board and the switch box.
Cutting jumper W 18 reduces the maximum supply temperature
when in warm water mode to about 70 °C.
2
16
W 18
W 18
25 29 60
1
3