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42
7. Initial operation
Pos. OFF
Pos. 1
The water heater’s temperature must be limited to 55 °C, if it is connected to a show-
er. The temperature limit must be set to a value less or equal 55 °C in the setting menu,
in consultation with the customer and the lock level must be activated.
When the appliance is operated with preheated water, it must be ensured that this
temperature is limited to 55 °C as well.
Shower application
Locking function
The operating mode of the appliance can be restricted.
Activation of the locking function
1. Select required parameters via the setting menu (see online user manual chapter
“Settings”, subpoints “Temperature limit” and / or “Load shedding”).
2. Disconnect the appliance from the power supply (e.g. by switching off the fuses).
3. Take the jumper off the power electronics and change to position “
1
” (see picture).
4. Put the appliance into operation again.
Deactivation of the locking function
1. Disconnect the appliance from the power supply (e.g. by switching off the fuses).
2. Take the jumper off the power electronics and change to position “
OFF
” (see pic-
ture).
3. Put the appliance into operation again.
