Helios KWL 890 W Notice De Montage Et D'utilisation page 55

Installation and Operating Instructions
NOTE
Central ventilation unit – KWL 890 W/W ET
• Delete weekly programme
iWe would like to point out that you should only use the „Unit off" function in special cases! The ventilation system
should be switched on at all times to ensure fresh and healthy indoor air and to prevent moisture from condensing in
the ventilation ducts or structures.
8.3 Unit data
8.3.1 Ventilation unit status
The following ventilation unit status data is displayed or can be adjusted:
• Ventilation profiles
Status: Activate/deactivate ventilation unit.
• Last power failure
Displays the days since the last power failure.
• Operating time
Displays the operating time in days.
8.3.2 Time, Date
The following time and date data can be adjusted:
• Date
• Time
• Daylight saving time
• 24 hr format
8.3.3 Ventilation unit data
The following ventilation unit data is displayed:
• Model
• Series number
• Type
• Software version
• Rel. humidity sensors (number)
• CO2/VOC sensors (number)
• Alignment
• UUID
• Cloud service
• IP address
• Gateway
• Mask
8.4 Service menu
8.4.1 Temperatures
The current temperatures are displayed:
• Supply air
• Exhaust air
• Intake air
• Extract air
• After auxiliary heating (only if extension module is configured)
• Supply air after heat exchanger
8.4.2 Self-diagnosis
ⓘ The self-diagnosis can take up to 20 minutes. The unit must be activated for longer than 15 minutes to perform
the self-diagnosis.
The availability and function of the following components can be tested via the self-diagnosis:
• Heat recovery
ⓘ If the external temperature is above 10 °C, the function test cannot be performed.
Self-diagnosis is successful if the heat recovery is between 60-100 %.
• Bypass
ⓘ If the temperature difference between extract air and intake air is ≥5 °C, the function test cannot be perfor-
med.
The bypass function must be active.
Self-diagnosis is successful if there is an increase in the supply air side efficiency determined by the unit.
• Heating element
The pre-heater must be activated.
Self-diagnosis is successful if the supply air temperature increases by +2 °C.
8.4.3 Test mode
The test mode can be implemented for the following components:
• Fan test
• Supply air
• Extract air
• Heating element test
• Additional heating
• Preheating
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