3
2. Safety recommendations
the heater ought to be installed by a qualified person
the heater must be permanently connected to the electrical wiring equipped with an
earthing clamp and a residual circuit breaker
the heater can operate only in the position shown in figure 1.
be careful not to swap protective earth with the power supply cable
the heater can operate only with some suitable protections which work properly
the device cannot be installed in the rooms where the air temperature may decrease
below 0°C.
the device cannot be installed in an aggressive environment or the environment
exposed to explosion
the heater can be used only when it is fully-operational
in case of malfunctioning of the device, immediately cut off the water and power
supply
all maintenance works should be conducted when the device is disconnected from
the power source
only original parts can be used
do not take off the heater case when the device is connected to the power source
do not allow the electronic system to get wet
in case of damage or malfunctioning, disconnect the device from the power supply
and cut off the water supply by the use of the cut off/flow control valve
periodically clean the faucet aerator
periodically check the condition of the electrical wiring (voltage drops) - especially
the electrical connection
the water flow in the heater ought to be controlled in such a way that the water
temperature does not cause the feeling of heat (especially as far as children are
concerned)
children should be supervised to ensure that they do not play with the device
if there is a non-return valve installed on the water supply pipe the safety valve must
be fitted between unit and non-return valve.
the unit must never be exposed to temperatures below 0°C.
the unit can only be connected to the cold water supplies.
electric installation must be equipped with residual current protective devices and
other solutions which will ensure disconnecting the heater from the source of power
(intervals between all their poles should not be less than 3 mm).
3. Wiring system
the instantaneous heater can be used only after being earthed
the electrical wiring must be equipped with a residual circuit breaker
minimal cross section of the power supply cable and fuse rating must be selected
according to table 3
check the condition of the electrical wiring (especially the electrical connection)
before installing the device
check voltage drops in the electrical wiring after the activation of the device
this device may be used by children over three years old and people with limited
physical, sensory or mental abilities, or with no experience and knowledge if they
are supervised or were provided with instructions regarding the use of the device in
a safe way and understand possible dangers