to indicate low battery voltage warns reliably that the batteries
should be replaced only when alkaline batteries are used.
7. THE RECEIVER UNIT
7.1 Installation and connection of the receiver unit
WARNING! The device must be installed and connected by a
qualied professional. Before installing, make sure that that
neither the thermostat nor the device to be controlled is con-
nected to the 230 V mains voltage. Modifying the thermostat
can cause electric shock or product failure.
The receiver unit should be mounted on the wall in a place
protected against moisture, dust, chemicals and heat, in
the vicinity of the boiler. When choosing the location of the
receiving unit you should remember that bulky metal objects
(e.g. a boiler, buer tank, etc.) and metal building structures
may have an adverse eect on propagation of radio waves. If
it is possible, in order to ensure trouble-free RF connection,
we recommend that you install the receiving unit at a height
of 1.5 to 2 m and at a distance of 1 to 2 m from the boiler
- 18 -
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