Removing The Heating Element; De-Scaling The Heating Element; Replacing The Heating Element; Changing The Anode Rod - Stiebel Eltron SHC 2.5 Instrucciones De Funcionamiento E Instalación

INSTALLATION
MAINTENANCE INSTRUCTIONS

11.5 Removing the heating element

1 Unplug and drain the water heater. See 11.3, "Draining the
water heater", pg. 7.
2 Remove the cover. See 11.4, "Removing the cover", pg. 7.
3 Disconnect the line wires from the thermostat.
4 Remove the thermostat from the heating element.
5 Using a suitable wrench, unscrew the heating element.
6 Remove the heating element from the tank.

11.6 De-scaling the heating element

Scale deposit can affect the heating capacity of the heating ele-
ment. Scale can even cause the element to burn out. The element
can be descaled either chemically or manually.
1 Remove the heating element. See 11.5, "Removing the heat-
ing element", pg. 8.
8 | SHC 2.5 / SHC 4 / SHC 6
2 To descale chemically, soak the heating element in white vin-
egar or other descaling solution, then rinse well.
3 To descale manually, use a nonmetallic (soft) tool; brush the
crust off the element. Make sure you do not damage the sur-
face of the heating element.
4 Reinstall the heating element.
5 Refill the water heater with water and check for leaks before
connecting the power.

11.7 Replacing the heating element

1 Unplug and drain the water heater. See 11.3, "Draining the
water heater", pg. 7.
2 Remove the cover. See 11.4, "Removing the cover", pg. 7.
3 Remove the heating element. See 11.5, "Removing the heat-
ing element", pg. 8.
4 Install and seal the new element. Make sure that the heating
element is positioned correctly.
5 Remount all the line wires to their original location.
6 Refill the water heater with water and check for leaks before
connecting the power.

11.8 Changing the anode rod

A magnesium anode is used to extend the life of the tank. Perma-
nent removal of this anode for any reason will void the warranty.
Depending on conditions, the magnesium anode rod may need to
be changed approximately every two years. Galvanic and electro-
lytic corrosion can destroy a tank with a spent anode rod. Rusty
water is usually an indicator of a spent anode rod.
1 Unplug and drain the water heater. See 11.3, "Draining the
water heater", pg. 7.
2 Remove the cover. See 11.4, "Removing the cover", pg. 7.
3 Remove the heating element. See 11.5, "Removing the heat-
ing element", pg. 8.
4 Secure the anode using pliers.
5 Unscrew the nut and remove the anode rod through the
opening of the heating element port.
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