Siemens Synco 900 Mounting And Commissioning page 41

Connect SSA955 radiator control actuators
The radiator control actuator is automatically switched on as soon as
the batteries are inserted. Then, a short battery capacity test is made.
During the test, the LED lights up green for 2 seconds.
If the batteries' capacity is not sufficient for operation, the
LED is lit red for 2 seconds – provided the capacity is still
sufficient.
As soon as the actuator is ready to make the connection, the LED
starts flashing green.
Prior to establishing the connection, the actuator must be
fitted to a valve to ensure the calibration can be made (error
message).
After the battery capacity test, an actuator that has already
been connected checks its settings as a lead controller (mas-
ter) or lag controller (slave). In the case of lead controller set-
tings, the LED blinks 3 times red / green. In the case of lag
controller settings, the LED remains dark. After that, the
actuator performs normal operation.
If the room temperature is acquired with the built-in sensor of
a radiator control actuator, the control actuator whose sensor
should be used must be connected first. No consideration is
given to the sensors of the other radiator control actuators of
a room.
Now, the connection LED on the actuator blinks green and extin-
guishes on successful completion of the binding process with the
central apartment unit.
To confirm the successful connection, the central apartment unit
delivers a beep. When all devices of the room are connected, close
the binding process by pressing the Menu/ok button.
If the binding process with the central apartment unit proved
unsuccessful, blinking of the LED changes to flashing after
1 minute (status indication of unbound operation).
After successful establishment of the connection, the radiator control
actuator restarts and automatically starts self-calibration (refer to
"Calibration of radiator control actuator" below).
The actuator is now connected and performs normal operation.
Siemens
Building Technologies
Now, press the multifunction button
on the radiator control actuator. The
LED lights up in accordance with the
batteries' capacity (green: Bat. ok,
red: Bat. not ok). As soon as the LED
blinks, you can release the binding
button.
Synco 900
Commissioning the system
41/88
CE1C2707en
05.07.2007