Zehnder Rittling ComfoAir 70, Руководство пользователя

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difference between indoor and outdoor air, at a difference of

T < 5 K the air volume is reduced to 20 m³/h. When the
Bathroom function operating mode is active, the unit will be operated with the highest fan speed if the relative humidity
amounts to 80% or more.
Diagram 1: Factory setting characteristic curve for Automatic operating mode with humidity control
3.2.3.2 Functional principle of CO
2
/ VOC sensor
NOTE
The CO
2
sensor module and the VOC sensor module are each combined with a humidity/temperature sensor.
The CO
2
sensor module and the VOC sensor module both offer the option to evaluate relative air humidity as well as the
air quality for controlling the ventilation unit. The VOC sensor module detects volatile organic compounds (VOC) and the
CO
2
sensor module, as NDIR sensor (nondispersive infrared sensor), detects carbon dioxide (CO
2
). Volatile organic
compounds correlate with the CO
2
concentration in living spaces. In the evaluation of the current sensor signal for the
setpoint selection, the fans are regulated in accordance with the characteristic curve in diagram 2.
Diagram 2: Factory setting characteristic curve for Automatic operating mode with CO
2
/ VOC control
NOTE
The CO
2
and VOC sensor modules combined with a humidity/temperature sensor can be deactivated separately if
needed, in accordance with the humidity or air quality control. The HUMIDITY sensor technology is primarily supposed
to be installed in units for the ventilation of rooms with an increased occurrence of humidity. However, if both sensor
functions are configured as active, the control characteristic of the higher sensor signal becomes effective.
The required hardware settings on the control system are only allowed to be made by qualified personnel.
Maintenance by the user
Maintenance work on the ventilation unit is limited to filter replacement and external cleaning as required.
NOTE
If the maintenance work is not carried out regularly, this will affect the functionality of the ventilation unit in the long run,
in particular in the case of a failure to perform filter maintenance.
Filter maintenance
The ventilation unit has a runtime-controlled filter monitoring system with visual indication via the filter maintenance LED.
The filter monitoring period is 90 days as standard but can be adjusted to a period of between 30 and 180 days by the
customer service department using a programming module.
NOTE
If the air is heavily polluted (e.g. with road traffic, industrial use, in rooms with increased dust levels), change the filters
every three months
.
0
10
20
30
40
50
0 10 20 30 40 50 60 70 80 90 100
Volume flow
[m³/h]
Rel. humidity [%]
Humidity control
0
10
20
30
40
50
400 600 800 1000 1200 1400 1600 1800 2000
Volume flow
[m³/h]
Concentration CO2 [ppm]
CO2 / VOC control