12 - EN
manual. If the safety regulations, warnings, com-
ments and instructions are not complied with,
this can lead to personal injury or damage to the
product.
Disconnect the electrical group to which the
main control unit or upgrade sensor is con-
nected, before opening the cover of the de-
vice.
Electrostatic discharge (ESD)
There is a risk that PCBs may be damaged by an
electrostatic discharge if electrical components
have to be exchanged. For this reason, always
take ESD-inhibiting measures when dealing with
PCBs, such as wearing an antistatic wristband.
Do not use the CO
2
sensor for safety-
related control of the gas supply, as it
is intended only for use in living areas.
The CO
2
sensor can be disrupted by
other RF transmitters.
Installation
Installation
The CO
2
RF main control unit and the CO
2
RF
upgrade sensor are constructed from a sensor
section (the front) and a transmitter section (the
rear).
A
B
The transmitter
section has been
designed for
mounting on a flush
socket. The sensor
section must be
separated from the
transmitter section
in order to mount
the devices on the
wall and to electri-
cally connect them.
To do so, use a
small screwdriver to
press the 2 click fin-
gers (B)
in the air
channels on the top
of the device down-
wards slightly and pull the sensor section up-
wards.
Note: When putting back the sensor
section, the 4 pins (A)
of the electrical connec-
tion must fall into the contacts of the transmitter
section. Ensure that the regulator is put back in a
position that allows the air to move freely through
the air channels. When selecting the position, en-
sure that there are no large metal obstacles be-
tween the ventilation unit and the CO
2
sensor. Di-
rect radiant heat or warm supply air must also be
avoided. The recommended position for the CO
2
