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3.7.2 Water filling
If the unit is used for the first time or used again after emptying the tank, please make sure that the tank is full of water
before turning on the power.
1. Proceed to thoroughly clean the system.
2. Open the cold water inlet and hot water outlet.
3. Start the water filling. When there is water normally flowing out from the hot water outlet, the tank is full.
4. Turn off the hot water outlet valve and water loading is finished.
ATTENTION: Operation without water in water tank may result in damage of auxiliary E-heater.
3.7.3 Drain of the water from the tank
If the unit needs cleaning, handling etc, the tank should be unloaded. It is possible to do this through the water supply
inlet connection or through a manual shut-off as recommended at the beginning of the section (the installation of the
manual shut-off valve is the user's/installer's responsibility).
1. Close the cold water inlet.
2. Open the hot water outlet and open the manual valve of drainpipe.
3. Start the water unloading.
4. After unloading the water, close the manual valve.
3.8 WIRING DIAGRAM
Check out that the power supply meets the unit's electric nominal data (voltage, phases, frequency) reported on the
technical label of the unit. This appliance is fully supplied with a power cord and Schuko plug, it is forbidden to tamper
with the power cord or the plug, contact the customer assistance service if necessary. It is recommended to carry out a
check of the main electrical circuit and its compliance with the regulations in force. Check that the main electrical circuit
is adequate for the maximum power input of the unit (refer to the data on the nameplate) in both the cables section and
the compliance with the current legislation.
WARNING: The power supply have to respect the listed limits: failing this, warranty will terminate
immediately. Before any operation on the unit, be sure that the power supply is disconnected.
WARNING: The supply voltage's fluctuations can not exceed ±10% of the nominal value. Should
this tolerance not be respected, please contact our technical department.
The unit must always have an earthed connection. If the power supply is not earthed, you may
not connect the unit.
Never use an extension cable to connect the unit to the electric power supply.
If there is no suitable, earthed wall socket available, have one installed by a recognized
electrician.
Do not move/repair the unit by yourself.
If the supply cord is damaged, it must be replaced by the manufacturer or its service agent or a
similarly qualified person in order to avoid a hazard. Improper movement or repair on the unit
could lead to water leakage, electrical shock, injury or fire.
The installation height of the power socket should be over greater than the hydraulic connection
point of the unit in order to protect the unit from water that may spatter.
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