Zehnder Rittling ComfoAir 70 User Manual page 23

terminal of the PE conductor remains unassigned on the unit side (ventilation unit corresponds with protection class II
– protective insulation).
4. Get the clamping connections in the connection socket and close them using the cover.
5. Then insert the complete EPP housing of the ventilation unit into the wall mounting tube up to a distance of approx.
15 cm from the wall bracket so that the control board is still freely accessible.
6. Connect the secondary-side stranded wires of the power supply unit to the 24 V X6 terminal on the control board.
NOTE
Watch out for the secondary-side, polarity-dependent terminal assignment.
Stranded wire colour coding
red
black
Polarity of 24 V X6 terminal
+
-
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