RiTTO TWINBUS, System Manual

Page: 79 / 197

Installation: Assembly, connection and start-up
79
In
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Connection
Connect screening on incoming and outgoing lines. Connect all unused wires as screen for YR lines.
The button adapter 1 4645 must be used for the parallel operation of several compact intercom units that are
supposed to respond to a floor push button (ED).
Starting up
Start-up can be performed using the compact intercom unit or using the floor push button. Start-up using the
apartment button is useful if you do not have access to the residential unit.
In order to allow the operator to change the call tone of the main bell button, the main bell button must be programmed
as the main button when initial setting takes place. The procedure must be repeated for other bell buttons.
The intercom can be used for start-up with two persons.
Adjustment protection
The TwinBus power supply unit can be used to give the connected intercom units a setting protection to prevent them
from being changed inadvertently - see page
☞
100
.
A negative acknowledge tone when the setting button is pressed is an indication that the adjustment protection facility
has been activated.
Start-up using the compact intercom unit
One-man start-up
Connections
a, b bus terminal
ED, ED apartment button
Activity Result
+
>Press and hold for 5 s until
flashes
Within one minute, press the button to be
assigned on the door station
RiTTO
RiTTO
acoustic signal for confirmation at
intercom unit and door station