Mounting The Handset; Installing The Transformer; Wiring; Connecting The Interphone - Extel BUS PRO 2 NAI-212 Guide D'installation Et D'utilisation

4. 2 settings accessible on the upper part of the roadside panel:
To change the settings, use a small screwdriver and turn it carefully without force to the abutments.
(Fig 2b 8) on the left, setting of the sound level for the speaker of the roadside panel.
(Fig 2b 9) on the right, setting of the sound level for the speaker of the handset.
5. Remove the "JP3" jumper to activate dual-family mode (see chapter 5d. Activation of the dual-family mode)
6. Replace the front plate and secure it by replacing the 2 screws at the bottom of the roadside panel (3).
Make sure to position the front panel in the notches located at the top of the roadside panel.
Important:
Important:
Do not install a silicon seal on the lower part to avoid any condensation resulting in premature oxidation of the
electronics.
b. Mounting the handset (
- Release the mounting slots
- Fix it to the wall using 2 screws
- Connect the various wires, as shown on the wiring diagram (fig. 5)
- Replace the handset on its wall bracket.
- Adjusting the ring volume: Slide the two-position switch on the side of the handset to select high or low ring
volume.
c. Installing the transformer (
- Attach the transformer to a DIN rail in a modular fusebox or to a flat surface using the two black lugs clipped to
the sides of the power supply.
SAFETY INSTRUCTIONS
The transformer must be mounted to a DIN rail in a modular fusebox or surface-mounted on a non-metal
surface using the two mounting holes. The terminal block covers must be fitted. The unit should be connected
to an electrical installation meeting applicable standards (NFC 15-100 for France) AFTER WIRING IS COM-
PLETELY FINISHED.
It is essential to ensure that the poles are correctly matched when connecting the handset.

5. WIRING

See the wiring diagram (fig. 5)
a. Connecting the interphone
In order to prevent interference and malfunction, never include "low-current" cables in the same sheath as high-
power cables.
1. Connect the wires as shown in the connection plan.
2. To connect the street plate, two wires are needed for the functions: calling, communication and opening com-
mands.
Distance between the intercom panel and the last handset
• From 0 to 25m
• From 25 to 100 m
Warning: never double up wires in order to increase their calibre.
Connecting the handset to the roadside panel of the kit:
• Terminal "3" and "4" of the handset to the terminal "3" and "4" of the roadside panel.
GB3
Do not put screws into the microphone hole (4, fig.2b).
Insert a silicon seal on the upper half between the intercom panel and the wall (fig.3)
fig. 4a and 4b)
fig. 4c)
CFI EXTEL BUS PRO 2 - 12/2011
Wires to be used
2 wires 6/10e
2
2 wires1.5 mm