Zehnder Rittling ComfoAir 200, Manual

   15 - EN

4.1.2  Cleaning the internal filters 

Vacuum the filters (B) with a vacuum cleaner instead 

of replacing them with new filters.

 When using the unit for the first time, it 

is recommended to clean the filters (and 

valves) first. During the construction phase 

the ventilation system could have become 

dirty with building dust.

4.2  Cleaning the valves 

Clean the valves (at least) twice a year.

1.  Mark the setting of the valve; 

2.  Remove the valve from the wall or ceiling;

3.  Clean the valve in a solution of soap and warm 

water;

4.  Rinse the valve thoroughly and wipe dry;

5.  Place the valve back WITH EXACTLY THE SAME 

SETTING (and IN THE SAME HOLE);

6.  Repeat this procedure for the other valves.

   Some valves have a filter behind them. If a filter 

is present, clean it in the same way as the valve.

About the valve settings

 The ventilation air is supplied and discharged 

by means of valves. Gaps under or near doors 

in the dwelling ensure that the air flows in the 

right direction. In order to ensure that the correct 

ventilation volumes are maintained in the rooms, the 

following must be observed:

 Do not seal the gaps under or near doors. For 

example with furniture, draught excluders or 

deep-pile carpet. The gap should be at least 

10mm;

Do not change the settings of the valves;

Do not replace the valves with one another.

 The installer will have set all the valves to ensure 

the optimum performance of the ventilation system. 

Therefore, do not change the setting of the valves.

4.3 Condensation  drain 

Ensure that the water seal (u-bend) connected to the 

domestic waste-water system is always full of water.

4.4 Maintenance by the installer or 

service engineer 

 Not all neccesary maintenance can be done by the 

user. 

   Once every 2 years the installer or a service 

engineer should come by for the maintenance 

inside the balanced ventilation system. 

Some installers offer a full maintenance contract 

package where the user maintenance can also be 

integrated.

5 Malfunctions

In the event of a malfunction, the corresponding 

malfunction code will be displayed on the display of 

the unit.

In event of a filter malfunction the filter must 

be cleaned or replaced as described in the 

„Maintenance“ chapter.

In the event of all other malfunctions:

Action

Explanation

1

Note down the malfunction code that 
appears on the display of the unit

2

Note down the unit type.
This is given on the identification plate on 
the unit near the power supply.

3

Contact the installer or service engineer and 
give him the noted information.

The system should not be disconnected from the 

power supply, unless the unit must be taken out of 

service due to a serious malfunction, or for filter 

cleaning/replacement or any other compelling 

reasons. 

 If the unit is disconnected from the power 

supply, mechanical ventilation of the 

dwelling will cease. This can lead to a build-

up of moisture and result in problems with 

mould. 

 I

f the unit is installed in an area with a higher 

average humidity (such as bathroom or 

wc) the probability of condensation on the 

outside of the unit is high. This is similar to 

condensation on a window and no action is 

needed.