Zehnder CO2 RF Installationsanleitung Seite 13

RF main control unit is next to the thermostat or
light switch in the living room. The upgrade sen-
sors should be fitted in the bedrooms.
Electrical connections
The CO sensors must be connected in con-
2
formance with locally prevailing procedures. The
CO sensor transmitter section is connected to
2
the 230V/50Hz grid via a flush socket. Push the
cables through the rear of the casing. Securely
screw the transmitter section to the flush socket.
Connection between the ventilation unit
and the CO sensors
2
The following steps must be carried out to make
a connection between the ventilation unit and the
CO sensors:
2
Ventilation unit
Ensure that the RF input of the ventilation unit
is set to "proportional control". Consult the fit-
ter's manual for the ventilation unit for more
information.
1. Remove the ventilation unit plug from the
socket and replace after 5 seconds. The
device is now in programming mode. A con-
nection can be made with the main control
unit within 10 minutes.
CO RF main control unit
2
2. Press the button on the CO
control unit for approximately 8 seconds.
The sensor will now establish a connection
with the ventilation unit. The green, orange
and red LEDs flash to confirm that the com-
munication has been established.
CO RF upgrade sensor
2
3. Repeat step 1. Use a pointed object (pa-
perclip or pen) to press the button on the
upgrade sensor until the green, orange and
red LEDs flash (approximately 8 seconds).
4. Repeat step 3 until all upgrade sensors are
connected.
Connection problems
The following problems may occur when con-
necting the sensors or accessories:
■
The red LED on the CO
unit flashes. No connection has been
established with the ventilation unit. Repeat
step 1 and 2. If this is ineffective, check
that the distance between the ventilation
unit and the sensor is not too large and that
the communication is not impeded by large
metal obstacles;
■
The red LED on the CO
flashes. No connection has been established
between the CO RF upgrade sensor and the
2
ventilation unit, or the CO
is not connected. Check that the CO
control unit is working properly. Then repeat
step 3.
RF main
2
RF main control
2
RF upgrade sensor
2
RF main control unit
2
RF main
2
EN - 13