Inst
alla
tion
Installation: Assembly, connection and start-up
68
2.5.6 TwinBus comfort handsfree video intercom unit 1 7845
Assembly
Remove the TwinBus device and the supplied components from the packaging.
Please provide your customers with a copy of the operating instructions for the TwinBus device.
Concealed and cavity wall installation
A flush-mounted frame 1 7321 is required for installation. The flush-mounted frame is plastered in or attached using
the provided cavity wall clamps.
Note:
The comfort handsfree video intercom unit 1 7855 is installed in the same way as the handsfree
video intercom unit 1 7835 – refer to page
Note:
the speech quality depends on the installation of the device. Install the handsfree video intercom
unit at the operator's eye level. When used in combination with the staircase door station, the
handsfree video intercom unit must not be coupled acoustically with the staircase door station.
Acoustic couplings are created, for example, by wide joint clearances in doors or air drains in
conduits for electrical wiring.
1. Cavity wall clamps
2. Fastening screws for cavity wall clamps
3. Plastering protection
h: 242 mm
b: 169.5 mm
t:
35 mm
Note:
The plaster protection (3) provides protection from soiling. It should only be removed just before
the handsfree video intercom unit is installed.
If the walls are not plastered, the thickness of the plaster to be applied must be taken into
consideration during installation.
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00886-0
t
h
b
!
00055-0
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