English 5.906-736.0 Rev. 00 (07/15) 531 Connection tank on the left side - tank on the right side2 Supply from the float container3 Stop cock drain water tanks4 Supply to the high-pressure pump5 Stop cock water tanks6 Supply from water tank on the rightOperation with water supply via the water tanksWhen the tap (5) is open, water flows from the float con-tainer into the water tank on the right and from there via theconnection (1) back into the water tank on the left.This way, the filling level is the same in both 250-litre tanksand the float container itself; it is monitored by the fillinglevel detector in the float container.When operated via the water tanks, the water supply to thehigh-pressure pump (4) takes place via the inlets of thefloat container (2) and the supply (6) of the correspondingwater tanks.Operation with external water supplyWhen operated with external water supply, the tap (5) isclosed so that the pump is only supplied by the supply (2)from the float container.The feed of the liquid softener takes place in accordancewith the setting on the service switch. The setting is de-scribed under "Service switch". The feed only takes placein the programme switch position "ECO" and "Warm wa-ter" at a set water temperature ≥ 50°C.The empty message takes place via the level switch and isshown on the display.The burner operation is also possible without liquid soften-er. With hard water, however, malfunctions due to lime de-posits must be expected.NOTEThe dosing unit must not be switched off when using RM110.1 Lock2 Washer3 Liquid softener reservoir9.11 Water distribution9.12 Liquid softener