Viessmann VITOTRONIC 100 GC1 Installation And Service Instructions Manual page 58

Installation
Making Space for Accessory Adaptors on the DIN Rail (CM2 only)
58
1. Push up on the bottom front of
the DIN rail clamp to remove and
set aside.
2. Using a flat head screwdriver,
remove the 4 'spare' DIN
terminals 23, 24, 25 and 26 one
at a time. Place the screwdriver
between the rail and the base of
the terminal and turn the
screwdriver clockwise . Discard
the removed terminals.
3. Re-install the DIN rail clamp by
hooking the latch of the clamp
around the top of the rail and then
push down on the front of the
clamp.
Note: See separate Installation
Instructions for accessory
adaptors.