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Using the appliance for the first time and checking
The unit must be installed and started up by an approved firm of installers
which accepts liability for safety and proper function.
Before the appliance is energised (connected to the electricity supply),
it should be thoroughly flushed with cold water and the tightness of the
screwed joints checked.
After the instantaneous water heater is energised (connected to the
electricity supply), it should be inspected by a trained engineer to
ensure that it is in proper working order. For protection of the heating
systems, the system is arranged for a switch-on delay of 5 - 25 s at
initial startup and after the appliance has not been live for any length
of time.
Important: After any work carried out on the water supply unit, the
appliance should also be thoroughly flushed with cold water (vented)
before being switched on again. Only then should the appliance be
reconnected to the electricity supply.
After initial startup, the user should be familiarised with operation of
the appliance and the instructions for installation and use handed
over for safekeeping.