Zehnder Rittling ComfoAir 70 User Manual page 20

3. Remove the wall bracket from the EPP housing so that the unit is now available with no housing components.
4. The length of the EPP pipe housing must correspond to the length of the wall mounting pipe installed in final wall
thickness +5 mm. For this purpose, even if an EPP housing extension is required, the EPP pipe housing of the unit
must be shortened.
NOTE
The cut must be performed in the shortening area all around, perpendicular to the axis of the EPP pipe housing.
5. Drill the four holes in accordance with the mounting template for fixing the wall bracket, and insert the supplied, or,
depending on the wall construction, relevant mounting material (wall plugs) into the holes.
NOTE
Use the mounting template on the lid of the box or the wall bracket as an aid for marking the required holes for
mounting the wall bracket.
6. Screw the wall bracket to the inner wall and take care to ensure that the mains supply line and, if present, the cable for
the external control panel, are located in the area of the cable entry point.
7. Now carry out the electrical installation steps described in chapter "4.4 Electrical connections".
WARNING
The activities described in this chapter may only be carried out by skilled personnel with the following
qualifications:
Training on the installation and commissioning of electrical units.
Training on electrical hazards and local safety regulations.
Knowledge of the relevant standards and guidelines.
NOTE
Optional accessories, such as sensor modules, wireless or wired operating modules, must be installed before the
power supply connection. For this purpose, use the installation instructions enclosed with the respective accessories.
8. Fasten the lower design cover using the left-hand screw. The lower design cover can now be pivoted. Connect the
ribbon cable to the control panel as shown.
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