28
For drying, position the heat exchanger in such a way that existing residual water can run out of
the openings.
Let the heat exchanger run completely dry before reinstalling it.
Hints for proper cleaning can also be found at the manufacturer’s website.
8. Installation of the heat exchanger
Please note when installing the heat exchanger!
On the bottom of the heat exchanger is a condensate pan
H
with two cut-outs. When inserting the
heat exchanger into the unit, please assure that the two cut-outs of the condensate pan point to the
condensate outlet
I!
Fig 31: Position of the condensate pan when inserting the heat exchanger into the HRU
9. Afterwards, mount all parts in reverse order.
10. Re-establish the mains connection.
Replacement of the heat exchanger against the summer box
3.5.2
The summer box has no moisture- or heat-transfer properties and serves as a replacement
module of the heat exchanger for summer ventilation while maintaining a supply and
exhaust mode!!
In order to do so, proceed as follows:
1. Perform the work steps 1. to 6. pursuant to.3.5.1
2. Insert the summer box and perform the work steps 9. to 10. Pursuant to 3.5.1.
Visualising of operating modes
3.6
The control unit is equipped with 3 LEDs for signalling of operating modes.
The following operating conditions are shown with LED-signalling:
LED
Signalling
Condition / cause
LED 1
lights
Device operational / operating voltage supplied
H
I
