Regular maintenance
Your Nilan ventilation unit will last for many years if it is correctly maintained. Correct maintenance
will also ensure that the unit runs optimally at all times with low energy consumption.
In the following we point out the regular maintenance which you can perform yourself and the annual
service which should be carried out by a professional.
External cleaning
The ventilation unit
The outside of the unit can be cleaned with a mild soap solution.
The ceiling valves
Over time a ring may develop round the inlet valves. This is a natural process and is due to dust in the
room air, not to defective filters or failure to change filters.
As very few painted ceilings are washable, you are recommended to vacuum round the valve and then
wipe the area with a damp cloth.
It is a good idea to dismantle and clean the valves when necessary. The valves have been set by the
installer for a specific airflow, so it is important not to rotate them, as this will change the setting and
unbalance the ventilation system.
Water trap
The water trap may dry out and thus prevent water escaping from the condensate tray, as air will blow
into the unit. Condensate will accumulate in the condensate tray and at some point the water will
overflow, possibly causing damage to the surface below the unit.
The water trap should therefore be checked regularly and filled with water, especially in the summer,
where the risk of drying out is highest.
Filter replacement
The filters are intended to protect the fans and heat exchanger from being covered with dust and dirt.
To obtain good operation mode it is important to change the filters when needed. The time controlled
filter alarm is in Nilans control system set for filter change as a factory default setting at 90 days. This
can be changed to 180 or 360 days when required.
If the filters are not changed regularly, ventilation is reduced at the expense of the indoor climate and
affects the built-in humidity control system of the unit.
Combi 302 Polar Top (English)
BY NILAN
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