5. Usage and Maintenance
During heating, the volume of the water in the tank expands, causing a flow of water
(ex- panded water) from the outlet fitting. This is perfectly normal. Further tightening of
the tap will not prevent this but may damage valve.
Frost
If the risk of frost damage exists the heater should be left on at all times with the
thermostat set to minimum setting of (frost protection setting). When set to this
position, the heater maintains the water temperature at approximately 7
̊
C.
If the heater is likely to be unused for long periods it is advised that it is disconnected
from the power and water supply and then drained to avoid the risk of frost damage
and also stagnant water effects. If it is suspected the heater contains frozen water it
should not be turned on, contact your place of purchase or installer for advice.
Maintenance
This heater does not require any maintenance by the user. Professional
maintenance should always be carried out by an expert.
If faulty, never try to repair the heater yourself. Please contact the nearest service
specialist or the party that supplied the appliance originally.
De-scaling
A service inspection should be performed by authorized and qualified technical staff
every year. De-scaling of the heater during this inspection is highly recommended,
especially if you live in an area with hard water exceeding 12
̊
dH. Higher water
temperature will intensify calcification. It is therefore recommended to set the heater
at maximum 55
̊
C (energy-saving setting) in areas with extremely hard water > 16
̊
dH.
Cleaning
The enclosure can simply be cleaned with a damp cloth. Do not use aggressive cleaners
or cleaners with a scouring effect.
Legionella Prevention
Do not use heated water as drinking water. After prolonged shutdown of the heater for
example during holidays, the heater should be fully heated up to the maximum temperature
and water flushed through the tank for at least one minute.
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Summary of Contents for HF05LM
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