Part 4: How To Use - Modena Tondo Series User Manual Book

Operating Procedure

Check all the piping connection to avoid the leakage case before turning on this electric storage
water heater.

Open one of the outlet valves of the water heater, then, open the inlet valve .to get the water
heater filled with water.

When the water flows out of the outlet pipe it implies that the heater has been filled fully with
water, and the outlet valve can be closed. .

Make sure that the tank is fully filled up with water; otherwise it will cause the heating elements to
be damaged. Note: During normal operation, the inlet valve shall be always kept open.

Insert the power plug into the power socket and check the reliability of the leakage protection
device (ELCB). Press the testing button, the indicator light on the power plug should be off, and
the reset button should bounce up; then push down the reset button, the indicator light will turns
on to verify that the leakage protection works well (Picture 11). If the reset button cannot be
pressed during the process of using, the leakage protection device (ELCB) might be error or fails
to work; If the reset button is pressed down and bounce up again, then it shows the power circuit
leaks or the power supply is disconnected.

If the indicator lights up, the thermostat will automatically control the temperature. When the water
temperature inside the heater has reached the set point, it will switch off this water heater
automatically. When the water temperature falls below the set point, the heater will be turned on
automatically to restore the heating.
Operating of the Water Heater

Rotate the knob according to the marking (indicator) to increase or decrease the temperature
setting.

Rotate the power adjustment knob to the position I, II, or III, and the water heating process starts.

The water heater needs to be turned on for a certain period of time to reach the desired (set)
temperature.

During the heating process, it is normal to see the slight drip at the safety valve. Please do not
cover the hole of the safety valve outlet.

Connect this outlet hole to a discharge pipe. The water may drip from the discharge pipe of the
safety valve; therefore this pipe must be exposed to the atmosphere.

The safety valve has to be operated regularly (preferably at least every six months) to remove the
limestone deposit and to ensure that it is not blocked.

Part 4: How to Use

Picture 12
10
Picture 11