Descaling The Heating Element; Replacement Of Parts; Changing The Anode Rod; Changing The Heating Element - Bosch Tronic 3000T Manual For Installation

10 | Replacement of parts

G
Fig. 11
5.5

Descaling the heating element

Scale deposits can affect the heating capability of the element.
Heavy scale can even cause damage to the element. The element can be
descaled either chemically or manually:
▶ Soak the element in white vinegar or other descaling solution.
▶ Once descaled, rinse well with fresh water, to which you should add
some baking soda,
-or-
▶ Once the element has dried, use a soft brush (non metallic to prevent
damaging the stainless steel sheath) on element.
▶ Brush the dried mineral off.
▶ Reinstall the element with gasket and make the wire connections.
N
Fig. 12
NOTICE:
Make sure the tank has been refilled with water before
restoring power.
6 720 801 072 (2013/05)
6720801072-10.1V
6720801072-11.1V
6 Replacement of parts
6.1

Changing the anode rod

▶ Turn off the power supply and drain the heater (see Draining the
Heater).
▶ Remove heating element (see previous section).
▶ Unscrew anode rod from threaded connection.
▶ Remove and replace the anode rod (Fig. 12, [N]).
▶ Reinstall heating element.
▶ Refill tank with water before restoring power.
6.2

Changing the heating element

▶ Turn off power supply and drain the heater (see Draining the Heater).
▶ Remove the heating element (see section on Removing the Heating
Element).
▶ Install new element with gasket, making sure the gasket and element
are positioned correctly. Tighten the retaining nuts and make the
wire connections.
▶ Ensure that the thermostat temperature sensor is inserted into the
well located on the element assembly and secured with black rubber
grommet.
▶ Refill tank with water before restoring power.
6.3

Changing the thermostat

▶ Turn off power supply.
▶ Disconnect the 2 wire connectors on thermostat.
▶ Loosen the two brass screws at right side of thermostat and pull
wires out.
▶ Remove thermostat temperature sensor from well located in element
assembly.
▶ Unscrew and remove the two Phillips screws holding the thermostat
onto the tank.
▶ Install new thermostat and re-attach wiring and screws.
▶ Ensure that the thermostat temperature sensor is inserted into the
well located on the element assembly and secured with black rubber
grommet.
Tronic 3000T