Connecting The Hc450 Control Unit - Gigaset Gigasest HC450 Instruction Manual

Connecting the HC450 control
unit
Using existing cables
Disconnect the existing connection
between the doorbell and the bell trans-
former/bell at an appropriate location, if
possible near where the control unit is
mounted (see next diagram on left).
Connect the open ends for the bell
transformer/bell with the "Actuator" termi-
nals in the control unit (polarity is not
relevant).
Connect the open ends for the doorbell
with the "ETS" terminals in the control unit
(polarity is not relevant).
Caution:
Cables must not be connected or disconnected
during a thunderstorm.
Before
Doorbell
Bell
Bell trans.
Bell transformer
Installing the Gigaset HC450 door intercom system
New cabling
Connect the 2-core cable of the door inter-
com to the terminals marked "ETS" in the
control unit (see illustration below). Con-
nect the bell transformer/bell to the "Actu-
ator" terminals in the control unit.
After
Control unit
Push-
ETS
button
Light
Bell trans.
Bell transformer
Door intercom
Power
supply unit
Bell
Door opener
11