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

If there is a red CO
value (see section 4.3). If the indicator remains red, provide extra ventilation by opening
windows and/or doors.

4.2 Information about ventilation

The CO Sensor is used to offer automatic
2
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 mode:
■ Select PRESET 2 when a few people are
in a room where there is no CO
■ Select PRESET 3 when many people are
in a room where there is no CO

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 position light up.
The use of ventilation position 1 is
not recommended except for short-
term use.
Display of the manually selected ventilation level PRESET 3 (BOOST) on the control
device. Use if you require maximum ventilation.
Display of the CO levels.
2
Off: Brightness is off: Press the operating button once.
The CO LED turns on for 5 seconds.
2
Green CO LED: the CO
2
Orange CO LED: the CO
2
Red CO LED: the CO
2 2
LED: select the ventilation mode based on the measured CO
2
Sensor.
2
Sensor.
2
level in the measured air is good.
2
level in the measured air has increased.
2
level in the measured air is too high.
When the ventilation mode is
adjusted manually, automatic control
of the ventilation rate based on CO
level is disabled for 12 hours.
When the LEDs are not lit: briefly
press the operating button.
If only the CO
controls the ventilation based on the
measured CO

4.4 LED brightness setting

Within 30 seconds during installation,
press the operating button of the
CO
LED is lit, the device
2
values.
2
Sensor to confirm a setting.
2
2
2
21 - EN