Zehnder RFZ Manuel page 17

Introduction
The ComfoFan S R, CMFe R, WVS R, WVXeR,
InventiBox DC-R, WHR RF, ComfoAir RF, ComfoD
RF and Santos RF can be operated remotely using a
transmitter (RFZ). This has 4 buttons for setting the fan
position. Position 1, position 2, position 3 and a time
delay.
Before the receiver in the ventilation unit can be
operated remotely, the transmitter(s) and receiver
must be tuned to each other. The receiver can easily
be retro-fitted to a ventilation unit without standard
RF control. Once the 3-position switch / receiver
combination has been fitted, the highest activated rpm
is the benchmark. The receiver can simply be affixed or
screwed to the wall.
The remote control is powered by a lithium battery
(type: CR 2032). A new battery has a lifespan of about
five years with a maximum of ten switch movements
daily. Of course, the more often it is used, the shorter
the lifespan.
EN - 17