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Recommendations – Maintenance & Repairs
Advice for users
Flushing of sediment and draining :
To flush or to drain the water heater, power must be turned off and then turn off the cold water supply to
the water heater. The lever on the pressure and temperature relief valve should be opened but care
should be taken so the lever does not snap back as it could damage the valve seat. The pressure in the
water heater will be released when the lever is opened. The union at the cold water inlet to the water
heater should be undone and a hose should be attached to the water heater side of the union. The other
end of the hose should go to a drain.
Opening the pressure and temperature relief valve allows air into the water heater and for the water to
drain. Following complete draining of the water heater, the closest hot water taps may be opened fully
and the pressure and temperature relief valve closed with care. Following reconnection at the cold water
inlet, the cold water stop valve is now opened fully and the water heater may be filled with cold water
and flushed through to ensure the cylinder contains no sediment and is clean. Finally the closest hot
taps are closed and power may be turned on again to the completely filled water heater.
In the event of an anomaly - the heater does not heat or steam is released from the Pressure Temperature
Relief valve - switch off the electric power supply and contact your reseller.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge, unless they have been given supervision or
instruction concerning use of the appliance by a person responsible for their safety.
Domestic maintenance
Water heaters do not require much domestic maintenance by the user. Operate the Pressure Temperature
Relief valve once or twice a month to eliminate any residue of scaling and check that it is not blocked.
Regularly check the display for alarms. If an alarm appears, refer to the
Troubleshooting
section, page 22).
DANGER: Failure to operate the Pressure Temperature Relief valve easing gear at least once every six months
may mask a problem with the water heater. Continuous leakage of water from the Pressure Temperature Relief
valve may indicate a problem with the water heater.
It is not unusual for the Pressure Temperature Relief valve to allow a small quantity of water to escape during
the heating cycle and this must be left open to the atmosphere.
