ATC Electrical & Mechanical,
ATC House, Broomhill Drive, Tallaght, D24 EF99, Ireland
IE: 01 4678301, UK:0203 564 9164, Email [email protected]
-9-
the element well with fresh water, OR,
3. Once the element has dried up, use a soft brush (nonmetallic to prevent damaging
the stainless-steel sheath) on element, and brush the dried mineral off.
4. Check and replace anode rod as required, (see below).
5. Reinstall the element with gasket and make the electrical connections.
6. Reinstall the water heater as per above normal installation procedure.
7. Refill tank with water before restoring power.
Changing the anode rod
The anode rod helps protect the tank against corrosion. The magnesium anode rod
needs to be inspected and changed every year.
Galvanic and electrolytic corrosion can be caused by non-municipal water supplies or
low-level stray electrical currents in the water heater.
Galvanic and electrolytic corrosion can destroy a tank and can cause dirty water. If this
happens examine the anode rod immediately.
Rapid degradation of the anode rod (less than 1 year) may indicate the presence of gal-
vanic corrosion or high acidity/alkalinity in the water supply.
To replace the Anode:
1. Turn off the power supply and drain the heater (see previous section).
2. Remove heating element (see previous section).
3. Remove the spent anode from the element by twisting the spent anode anti-clock-
wise and replace it with a new anode rod.
4. Replace heating element (see previous section).
5. Reinstall the water heater and refill tank with water before restoring power.
Changing the thermostat
1. Turn off power supply.
2. Remove cover screw and cover. Remove dial from outside of cover.
3. Disconnect the spade connection wires on the on thermostat.
4. Remove and retain rubber plug holding the capillary sensor in the element and re-
move capillary bulb.
5. Unscrew and remove the screws holding the thermostat to the cover.
6. Install new thermostat and re-attach wiring and screws.
7. Re-install the capillary sensor into the sensor pocket hole in the element and install
rubber plug into top of the sensor pocket.
8. Re-install cover and cover screw and reinstall adjustment dial.
Resetting the high-level thermal cutout
Occasionally the high-level thermal cutout may trigger and shut the water heater down.
This occurs when water temperature exceeds 93°C, at this temperature the high-level
thermal cutout will shut off power to the heating element.