CONNECTION DIAGRAM
brightness adjustment
monostable or bistable
(single) push-button
Pn
MOUNTING
The RDP-21 dimmer is designed to be mounted in a junction box. Its dimensions enable flush (Ø60
minimum) and surface mounting. In case of a flush junction box, a deepened box is recommended,
as it makes mounting easy with a large number of wiring and a big cross-section of connection wires.
The device is designed for single-phase installation and must be installed in accordance with stand-
ards valid in a particular country. The device should be connected according to the details included
in this manual instruction. Installation, connection and control should be carried out by a qualified
electrician staff, who act in accordance with the service manual and the device functions. In case of
casing dismantling, the guarantee is lost and an electric shock may occur.
CAUTION: Before installation make sure the connection cables are not under voltage. The
cruciform head screwdriver 3,5 mm should be used to install the device.
1. Disconnect power supply by the phase fuse, the circuit-breaker or the switch-disconnector com-
bined to the proper circuit.
2. Check if there is no voltage on the connection cables by means of a special measuring equip-
ment.
3. Connect the device cables with the terminals in accordance with the installing diagram.
4. Install RDP-21 in a junction box.
5. Switch on the power supply from the mains and check if the device operates properly.
CAUTION: After power supply has been applied, the dimmer will carry out service activities
for about 5 seconds (it is signalled by a green STATUS LED, it will flash at an interval of 1
second). During this time the receiver's control is not possible.
In case of control by means of the EXTA LIFE system transmitters, it is necessary to programme
transmitters and receivers earlier (see Programming transmitters). In case of dimmer cooperation
with a controller, it is also necessary to pair it earlier (see Receivers' registration in the EXTA LIFE
system). As for the (IN) local input, in the event of connection a monostable push-button, it is ready
for an immediate operation.
P3
P2
P1