Electrical Connections; Dimensions - SystemAir CBF Serie Instructions D'installation

Assembly
For best results the extractor fan should be fitted as
high on the wall as possible, or on the ceiling. It
must not be installed in a shower cabin, or be
accessible to a person using either the shower or
the bath. Precaution must be taken to avoid back-
flow of gases from the the open flue of gas or other
open-fire appliance when mounted in the outside
windows or walls.
1. Remove the two small screw caps on the
front, remove the screws and the front
cover.
2. Hold the template against the wall (or
ceiling) and mark the screw holes and the
cable entry.
3. Make sure the fan is square on the wall
(or ceiling) and fasten it.
4. Make the electrical connections.
5. Put the front cover back on.

Electrical connections

Switch off mains supply before making any
electrical connections.
The extractor fan must be installed by
authorized personnel only. The wiring should
be fixed and the fan must be preceded by
an all-pole breaker with a contact gap of at
least 3 mm. The fans are double insulated
and do not require an earth.
The fan can be connected to the light switch,
so that it will start when the light is switched
on, or to a separate switch.
Trim the cable (see the drawing below),
remove the internal cover plate and make the
connections according to the wiring diagram.
6mm
9mm
Fig 1. Trimming the cable.
4
Timer
(CBF 100 LT and CBF 100 LTH)
The time delay can be set from 1 minute to
20 minutes.
Setting the timer
1. Switch off mains supply.
2. Remove the front case and the internal
cover plate.
3. Insert a small screwdriver into the slot and
turn clockwise to reduce the delay time
and anti-clockwise to increase it.
Humidity sensor
(CBF 100 LTH)
The fan will stop when the time delay is
switched off at the pre-set time. If the
humidity is higher than the pre-set level, the
fan will start again and run until the humidity
falls to below 5%. The sensitivity can be
adjusted from 40 to 95%. Suitable level is
often 70-80%.
Setting the humidity level
1. Switch off mains supply.
2. Remove the front case and the internal
cover plate.
3. Insert a small screwdriver into the slot and
turn clockwise to reduce the sensitivity
and anti-clockwise to increase it.

Dimensions

65
260
100
45
90