Zehnder Rittling Svea eAir, Operating And Maintenance Instructions Manual

6

USING THE VENTILATION UNIT

Once the ventilation system is carefully designed and 
installed, any user actions are hardly required. The user 
can relax and enjoy good ventilation.

General instructions

• 

Ventilation must be sufficient.

If ventilation is not sufficient, the indoor air humidity may 
rise, which can cause condensation on cold surfaces. 

• 

The indoor air humidity levels must be checked at 
regular intervals.

During winter an indoor relative humidity level of no 
more than 40-45% is recommended (room temperature 
20-22°C). The relative humidity level can be checked from 
the ventilation unit measurements. If the relative humidity 
level rises over 45%, ventilation should be boosted. 

• 

The cleanliness of filters must be checked regularly.

Often in wintertime, the extract air filter collects more 
dirt than the supply air filter. This means that the extract 
air flow is reduced, which can lead to a rise in indoor air 
relative humidity, and reduced heat recovery efficiency.

More information about cleaning and changing the filters 
can be found in the 

Maintenance

 section.

• 

Check monthly that the heat exchanger is 
functioning correctly, i.e. rotating.

• 

More information about checking and cleaning the 
heat exchanger can be found in the 

Maintenance

section.

If you encounter issues with using the ventilation 

unit, check for answers in the Troubleshooting 

table at the end of this manual.

Always keep the control panel in the wall mount.

Do not switch off the ventilation unless for service 

or when instructed so by the authorities. The 

ventilation must always be kept in operation at 

the power level set at the commissioning.

FOR INFORMATION

FOR INFORMATION

FOR INFORMATION

Do not try to set the system settings by yourself! 

Installing a ventilation system is a job for a trained 

installer.

Do not damage the control panel screen with a 

sharp or scratching object.

WARNING

WARNING

• 

If the ventilation unit is shut down for a longer time 
than a couple of hours during winter, the fresh air 
intake vent and exhaust air blowout vent must be 
covered airtight.

This prevents humidity from condensing on the electric 
motors of the fans, for example.

• 

In the autumn, before the beginning of the heating 
season and in the spring before the beginning of the 
cooling season (if the unit has a cooling function), 
the condensation water drain must be checked by 
pouring water in the condensation water drain and 
making sure that the water drains away.

This instruction is for the users of the Enervent ventilation 
unit and control panel.

Be patient! The control panel takes some time to react.