Oversink and Undersink Water Heater
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7.3
Temperature
When the system is stopped, a reduction of the temperature is normal due to the loss of heat. When it goes below
a few degrees, the system is automatically activated.
During the heating the water temperature could continue to decrease or could not increase because of the
exchange water heating. When the whole vessel will get to the temperature the system will stop automatically.
7.4
Descaling and limestone deposit removal
The formation of lime scale is possible in hard water areas. All reasonable precautions should be made to prevent lime
scale buildup, including physical and chemical devises. The water heater is fitted with a service hatch in order that the
installer may inspect or service the water heater on a regular basis. The inside of the water heater should be checked by a
qualified person at least after the first 2 years of use and then serviced on an annual basis. The limestone deposits reduce
the water heater volume and affect the electric heating element performance. Maintenance must be undertaken by
competent or appropriately qualified person on an annual basis. Please ensure you leave enough access room to remove
the inspection hatch and clean the inside of the water heater.
7.5
Replace and/or inspect the electric heating element
If it is necessary to replace the control or the electric heating element, please follow the procedure below.
Procedure:
Turn off the water heater.
Disconnect from the electrical supply.
Empty the water heater.
Unscrew and remove the plastic cap.
Disconnect the cable from the thermostat.
Remove the thermostat.
Disconnect and replace the electric element if required.
Clean and inspect vessel.
Re-install the thermostat.
Tighten the drain plug.
Restore the electric connections
Re fix the plastic cap.
Fill the tank and check for leaks.
Restore the connection to the electric supply.
Restart the water heater.
7.6
Outside cleaning
For the cleaning of the outer shell only use a damp cloth. Do not in any circumstances use abrasive products containing
organic thinners (alcohol, benzene, etc.).
7.7
Hydraulic safety unit efficiency check
The hydraulic safety valve unit efficiency is very important to prevent any overpressures inside the water heater (that
would damage it), and allows the user to safely operate the equipment. Periodically check the efficiency of the hydraulic
safety unit, according to the instructions provided by the manufacturer. Follow the instructions provided by the
manufacturer. During the check clean the unit and remove any limestone scales.
7.8
Simple checks should a malfunction occur
WARNING: All the operations must be performed with the equipment disconnected from the mains.
