Zehnder RFZ Manuel page 27

Ventilation unit on 1 switch with an arbitrary
address.
1. Disconnect the ventilation system and then
switch the power back on. You now have 10
minutes to program the unit.
2. Press "3" + button "
3. Both indicators turn red and then green. Tuning
is complete. (the ventilation unit R receives an
arbitrary address of the switch)
4. Test the 3 settings after programing the switch.
" for at least 6 sec.
EN - 27