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6. Expert knowledge required of the installer
7. Safety instructions for the electrical connection
The electrical connection, installation and commissioning of the device must be car-
ried out by a qualified electrician in accordance with the instructions in this manual.
ATTENTION!
–
DANGER!
– There is a risk of fatal injury resulting from electric shock when
touching electrical components.
• The electrical connection and all work on electrical systems must only be carried
out by a qualified electrician in accordance with the connection instructions in this
manual.
• Carry out all installation and connection work only in a de-energised state.
• Disconnect all phases of the mains power lead and secure it to prevent any re-
connection.
• Check that the system is de-energised.
• Prior to connecting, compare the information about voltage / frequency on the
device with that of the local electrical grid operator.
Risk of short circuits when installing the device in the rain.
During installation, pay particular attention to ensure that the temperature sensor
(small printed circuit board on the underside of the housing) is not damaged. Also
ensure the connecting cable between the printed circuit board and rain sensor is not
torn off or kinked when connecting it.
Risk of short circuits when installing the device in the rain.
Do not open the device if water (rain) can penetrate into it; even a few drops could
damage the electronics. Ensure it is connected properly. An incorrect connection can
lead to the destruction of the environmental sensor and the control electronics.
Incorrect wiring may lead to short circuiting and destroy the device.
Observe the sequence of connector pin assignments in the wiring diagram.
A defective antenna can cause malfunctions or the failure of the DuoFern
Environmental Sensor.
The antenna lead must not be shortened and damaged.
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