

XTEND elements are fitted just like any other element with one key difference: The thermostat is lower in the geyser with XTEND than with a standard element.
** Turn the thermostat DOWN by 10°C from the original setting **
If this step is not followed, the water may be too hot for the customer, and an additional site visit may be required to adjust the thermostat.
We recommend replacing the thermostat as the element is new. It is good practice to install a new thermostat at the same time. This can prevent additional site visits to replace old and faulty thermostats.
35mm Boss / Screw-in Model Fitment
-
Turn the thermostat down 10°C from the original setting.
- Refit the two cables (live & neutral) to the thermostat and earth the geyser.
50mm Flange Mount Model Fitment
Ensure NO WATER gets inside the grub screw hole during fitment.
-
-
For Kwikot geysers turn the base plate clockwise by one screw fitting as below:
- Turn the thermostat down 10°C from the original setting.
-
XTEND elements are fitted just like any other element with one key difference: The thermostat is lower in the geyser with XTEND than with a standard element.
** Turn the thermostat DOWN by 10°C from the original setting **
If this step is not followed, the water may be too hot for the customer, and an additional site visit may be required to adjust the thermostat.
We recommend replacing the thermostat as the element is new. It is good practice to install a new thermostat at the same time. This can prevent additional site visits to replace old and faulty thermostats.
35mm Boss / Screw-in Model Fitment
-
Turn the thermostat down 10°C from the original setting.
- Refit the two cables (live & neutral) to the thermostat and earth the geyser.
50mm Flange Mount Model Fitment
-
-
Ensure NO WATER gets inside the grub screw hole during fitment.
-
For Kwikot geysers turn the base plate clockwise by one screw fitting as below:
- Turn the thermostat down 10°C from the original setting.
-

XTEND elements are fitted just like any other element with one key difference: The thermostat is lower in the geyser with XTEND than with a standard element.
** Turn the thermostat DOWN by 10°C **
If this step is not followed, the water may be too hot for the customer, and an additional site visit may be required to adjust the thermostat.
We recommend replacing the thermostat as the element is new. It is good practice to install a new thermostat at the same time. This can prevent additional site visits to replace old and faulty thermostats.
35mm Boss / Screw-in Model Fitment
-
Turn the thermostat down 10°C from the original setting.
- Refit the two cables (live & neutral) to the thermostat and earth the geyser.
50mm Flange Model Fitment
-
- Ensure NO WATER gets inside the grub screw hole during fitment.
- For Kwikot geysers turn the base plate clockwise by one screw fitting as below:
- Turn the thermostat down 10°C from the original setting.
Troubleshooting Guide
Water not hot or lukewarm
If the geyser is not heating up, the following could be the cause:
1. Faulty mixing valve
2. Reverse thermosiphoning
3. Hot water leak
4. Ring main
5. Faulty timer or controller
6. Faulty thermostat
7. Faulty wiring or circuit breaker
8. Faulty element.
Please check all of the above before assuming it is the XTEND element.
We also advise that you connect the element to the power to ensure it is drawing current and to test the thermostat physically by turning it down to switch the element off and then up again to ensure that the thermostat is functioning correctly.
Troubleshooting Guide
Water not Hot or Lukewarm
If the geyser is not heating up, the following could be the cause:
1. Faulty mixing valve
2. Reverse thermosiphoning
3. Hot water leak
4. Ring main
5. Faulty timer or controller
6. Faulty thermostat
7. Faulty wiring or circuit breaker
8. Faulty element.
Please check all of the above before assuming it is the XTEND element.
We also advise that you connect the element to the power to ensure it is drawing current and to test the thermostat physically by turning it down to switch the element off and then up again to ensure that the thermostat is functioning correctly.
Tripping Earth Leakage or Circuit breaker
XTEND elements require a high current on start-up due to the ceramic chips inside needing more power upon start-up than standard resistive elements.
If the element is tripping, it could be due to any of the following:
1. Circuit breaker is faulty or very old
2. The wiring is loose around the circuit breaker
3. Connecting wires are too small or loose
4. The thermostat is faulty
5. The circuit breaker is too small
6. Dead short in the cable
7. Water inside the element will cause a short (This can trip the entire DB)
8. Tripping element.
Therefore, please always check the entire electric pathway for faults before returning the XTEND element as faulty. In most cases, it is not XTEND elements causing the problem.
Setting the Thermostat Correctly
XTEND Elements:
1. are at least 25% more efficient
2. locate the thermostat at the bottom of the geyser
For this reason, it is essential to adjust the thermostat setting to prevent overheating and to maximise savings.
Most houses set thermostats around 60°C, some at 65°C, others at 55°C
With XTEND elements it is possible to set the thermostat 10°C to 15°C lower than standard, depending on the number of hot water users.
The following thermostat settings are recommended:
Family of 1-2: 40°C
Family of 3: 45°C
Family of 4: 50°C
Family of 5: 55°C
-
recommended temperatures may vary for 150L and 200L geysers
For more information you can always call our XTEND elements Hotline on 087 057 9126
We also advise that you connect the element to the power to ensure it is drawing current and to test the thermostat physically by turning the thermostat down to switch the element off and then up again to ensure that the thermostat is functioning correctly.
Tripping the earth leakage or circuit breaker
XTEND elements require a high current on start-up due to the ceramic chips inside needing more power upon start-up than standard resistive elements.
If the element is tripping, it could be due to any of the following:
1. Circuit breaker is faulty or very old
2. The wiring is loose around the circuit breaker
3. Connecting wires are too small or loose
4. The thermostat is faulty
5. The circuit breaker is too small
6. Dead short in the cable
7. Water inside the element will cause a short (This can trip the entire DB)
8. Tripping element.
Therefore, please always check the entire electric pathway for faults before returning the XTEND element as faulty. In most cases, it is not XTEND elements causing the problem.
Setting the thermostat correctly
XTEND Elements:
1. are at least 25% more efficient
2. locate the thermostat at the bottom of the geyser
For this reason, it is essential to adjust the thermostat setting to prevent overheating and to maximise savings.
Most houses set thermostats around 60°C, some at 65°C, others at 55°C
With XTEND elements it is possible to set the thermostat 10°C to 15°C lower than standard, depending on the number of hot water users.
The following thermostat settings are recommended:
Family of 1-2: 40°C
Family of 3: 45°C
Family of 4: 50°C
Family of 5: 55°C
- Recommended temperatures may vary for 150L and 200L geysers