Berker 2948, Operating Instructions Manual, Page: 7 / 19

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Inst
allation Instructions
Inst
allation Instructions
3. Installation Instructions
Important: The sensor line carries protective low voltage (SELV). Please
observe the installation procedures as specified by VDE 0100.
Connecting the Sensor:
Buried Wiring (Figure A):
Choose suitable cable for buried installation of the sensor line.
Recommendation: J-Y(ST)Y 2x2x0.6 mm telephone cable. The individual wires of the
sensor line should be put through flexible insulating tubing (added to the attachments
with sensor evaluation). Then, together with the flexible insulating tubing, push the line
through entrance
c
of the insert and through duct
d
to terminal
e
.
The insulating tubing must cover the individual wires from the cable sheath to the
connecting terminal. Put the connecting terminal (added to the attachments with sensor
evaluation) in the insert as shown in the illustration.
Surface Wiring (Figure B):
Lead sensor line
c
behind the supporting plate (between the wall and the
supporting plate) through opening
d
into duct
e
of the insert. The line must be led
directly through the duct to connecting terminal
f
. The line must be precisely in the
duct and must not form any loops towards the 230 V connecting terminal space.
Connect the sensor line as shown in the opposite illustration.
Wire marking:
Sensor:
‘Earth’ = marked.
Adapter, extension line:
‘Twilight’ = marked.
‘Earth’ = middle wire.
The Timer-insert can only be used in conjunction with the Timer attachment with
time switch function.
Timer-insert
c
is provided for installation in a 60 mm flush box
(recommendation: deep box).
The connecting terminals of the insert must be down.
Plug attachment
d
onto the insert together with frame
e
.
Electrical contacting is established through plug
f
and
g
.
(For the description, installation and connection of the attachment, please refer to
separate instructions.)
A
B