
3
Application
Comfort bus telephone for Siedle
In-Home bus.
Deluxe bus telephone. Connection
at bus cores Ta and Tb.
Functions:
• Calling, speech, door release and
storey call
• Door release and light button
• Internal speech communication
• 11 ringtones
• Call and speech volume can be
changed in 5steps
• Silencing button for the ringtone
• 7 keys for switching and control
functions with double assignment
facility
• 7 LEDs under the buttons for dis-
play of switching statuses
• Integration of ZAR/ZPS850-…
accessory possible
Electrical voltage
Mounting, installation and servicing
work on electrical devices may only
be performed by a suitably qualied
electrician.
Electrostatic charging
As a result of electrostatic charging,
direct contact with the circuit board
can result in destruction of the
device. Direct contact with the circuit
board must therefore be avoided.
Scope of supply
• BTC850-… (base plate and
housing with circuit board)
• Receiver
• Spiral cable
• Operating instructions for the
end user
• This product information
English
Mounting
Strip back cable to appr.80mm.
1 Recommended mounting height
appr.1.50m/4.9ft to centre device.
2 Open the device from the back
by releasing the base plate with the
locking Lever.
3 When mounting directly on the
wall, fasten the base plate using
4screws, paying attention that
the plate is the right way up (top
marking).
4 When mounting on a switch box,
use the screw openings in the centre
of the device, paying attention that
the plate is the right way up (top
marking).
5 Install in accordance with the
wiring diagram. The cores of the
installation cable must be stored
inside the free installation space in
the base plate.
6 Insert the coloured plug of the
spiral cable into the socket at the
housing. A distinct click is audible
when the plug is correctly inserted.
7 Insert the other end of the spiral
cable into the receiver until the plug
clicks audibly into place. This con-
nection can no longer be detached.
8 Hook the housing into the base
plate from above and close by
exerting a slight pressure.
Dismantling
9 To remove the housing, press
the lock upwards using a at blade
screwdriver. The circuit board and
receiver remain on the upper part of
the housing.
Lettering
10The lettering panel can be
inscribed to indicate the button
functions. The see-through panel
can be lifted at the side.
Terminal assignment
Ta, Tb In-Home bus
ERT Storey call button
Commissioning
Installation, commissioning and
programming are described in the
system manual (enclosed with line
rectiers BNG/BVNG650-…).
Accessories for BTC850-…
• ZAR850-… for actuation of an
additional chime.
• ZPS850-… for parallel
programming of more than
4 BTC850-… units (max. 8
BTC850-… with one call button).
• ZTC800-… for conversion from a
wall unit to a desk unit.
Specications
Operating voltage: via In-Home bus
Ambient temperature:
+5°Cto+40°C
Dimensions (mm) WxHxD:
106x201x46