Indicator light ON - Heating demand (boiler
is in operation)
Indicator light flashing - Heating demand
manual operation
Indicator light OFF - No Heating demand
(boiler is out of operation)
Short flash of the indicator light-
receive a radiogram
In case of an interference, the operation can be
switched from automatical into manual operation,
please press the button . For changing the
operation mode of the boiler (ON or OFF), press
the button again.
Until the next signal is received from the room ter-
mostat, the boiler remains in operation (not cur-
rently available in the WC).
Connect a remote-control switch
The remote-control switch output is connected on
terminal TEL (see page 108).
Please note the installations instructions of the
remote-control switch.
There is a danger of fatal injury from tou-
ching live components. Install the roomt-
hermostat on the wall before connecting
the remote control switch.
VRT 240f
14
GB
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