Information About Ventilation; Setting The Ventilation Mode; Led Brightness Setting - Zehnder CO2 Sensor Manuel D'utilisation

4.2 Information about ventilation

The CO Sensor is used to offer
2
automatic demand control ventilation.
If installed correctly, it will provide
sufficient ventilation in the room where it
is installed.
In certain cases, it is recommended to
select a manual ventilation preset or, if
the situation occurs regularly, to set a
timer programme on the ventilation unit:
■ Select preset 2 when a few people
are in a room where there is no CO
Sensor.
■ Select preset 3 when many people
are in a room where there is no CO
Sensor.

4.3 Setting the ventilation mode

1. Briefly press the operating button to
select a ventilation level.
2. Repeat step 1 until the LEDs of the
desired ventilation preset light up.
The manual use of ventilation
preset 1 is not recommended
except for short-term use.
When the ventilation mode is set
to temporary manual, automatic
control of the ventilation rate
based on the measured CO
is disabled for 12 hours.
For the CO
on the ventilation unit determine
whether switching off control
based on the measured CO
values is permitted, aside from
a (temporarily) increased manual
preset. Automatic return to
ventilation based on the measured
CO values is also determined by
2
the settings of the ventilation unit.
24 - EN
level
2
C Sensor, the settings
2
2
When the LEDs are not lit: briefly
press the operating button.
If only the CO
device controls the ventilation
based on the measured CO
(with the exception of the CO
Sensor).

4.4 LED brightness setting

Within 30 seconds during installation,
press the operating button of the CO
Sensor to confirm a setting.
2
For an instruction video, please
visit our website under CO
2
Sensors (new generation), or
YouTube: https://bit.ly/31DPNjA
The 6 brightness settings for the LEDs
can be adjusted from high to low:
■ there are 4 settings descending from
bright to dim;
■ there is 1 setting where the LED is only
visible in case of warnings;
■ for the last setting the lighting is
switched off completely in all cases
except during operation.
1. Press the operating button for 5
seconds to start the menu.
■ All LEDs blink green 3 times.
■ Depending on the type of device,
the bottom LED (RF type), the
middle LED (0-10V type) or the
top LED (C type) flashes red for 30
seconds. The CO
red.
2. Briefly press the operating button to
select the brightness menu.
■ The top LED flashes red.
3. Press the operating button for 5
seconds to enter the brightness menu.
■ All LEDs blink green 3 times.
LED is lit, the
2
values
2
C
2
2
2
LED also flashes
2