4
3 Safety instructions
Danger from electric shock:
Before removing the front
cover, shut down all supply cir-
cuits (deactivate the mains fuse)
and secure so they cannot be
switched back on. Attach warn-
ing sign in clearly visible place.
Danger of injury when fans
are running:
Before removing
the front cover, wait until both
fans have stopped.
Danger of burning from hot
housing parts on units with
PTC heat register:
After removing the front cover,
do not touch the heat register.
First wait until the heat regis-
ter and the housing parts have
cooled off.
Store packaging material out of
the reach of children
Risk of
suffocation if swallowed.
4
Retrofitting bypass shutter
NOTICE
Incorrect wiring will result in unit damage.
Only undertake electrical connections accord-
ing to wiring diagram (
installation instruc-
tions).
NOTICE
If the connection cables are too short,
the electronic slide-in module cannot be
fully pulled out/fitted.
Do not shorten the
connecting cable supplied. It is already cut to
the right length.
1. Switch off all supply circuits.
2. Remove front cover(s)
Installation in-
structions for ventilation unit.
3. Remove bypass shutter in exhaust air duct
(small recessed grip at rear right
posi-
tion “I”) from the EPP housing.
4. At position “II” produce a slot in the EPP
housing for the connecting cable.
5. Slide bypass shutter (
diagram) into
bypass shaft until stop is reached.
6. Place connecting cable in slot (position
“III”) so it is secure.
7. Lift electronic slide-in module and pull
out of the electronics compartment. Hang
slide-in module in fitting “IV”.
