FARFISA INTERCOMS ECHOS User Manual

50
(MT11 - Gb2012)
INSTALLATION INSTRUCTIONS
- The cable runs of intercom and video inter-
com installations must be kept separate from
the mains or any other electrical installation
as required by the International Safety Stan-
dards and the entire installation must be
realized in compliance with the safety rules in
force in any specific Country.
- It is necessary to provide a disconnecting
and safety switch before the power supply.
Use a single general switch in case of several
power supplies (also in multiple entrance).
- Before connecting the power supply make
sure that its rating data corresponds to this of
the mains.
- For electromagnetic reasons, all service
modules must be installed near their power
supply.
Wires
1) For the correct operation of the intercom
and videointercom system you must choose
the correct type of cable.
2) Wires must be dimensioned according to
the distance of the different devices and
their current consumption.
3) Do not connect wires in parallel to reach the
required cross-section (for example multi-
pair telephone cables). Only use a single
wire with suitable cross-section. When us-
ing multi-core cables you must select them
with low parasite parameters (low capaci-
tance per meter, low inductance over Ohm).
4) If the installation includes additional power
supplies you must place them near the de-
vice to be powered.
Note. For distances longer than 100m (330ft)
max 200m (660ft) use twisted pair wire for
conductores X and Y.
X
X
Y
Y
WIRE CROSS SECTION
m.
50
100
200
mm²
S
0.5
0.75
1
mm
Ø
0.8
1
1.2
Distance
mm²
S
0.75
1
2
mm
Ø
1
1.2
1.6
1 . 3 . C- . 7 . E
10 . 4 . 1 . C- . 7 . E . V+
A . S. (*)
F . H . A . S. (*)
AWG
20
18
16
AWG
18
16
14
feet
165
330
660
Videointercom installation terminals
Intercom installation terminals
mm²
S
0.35
0.35
0.35
mm
Ø
0.6
0.6
0.6
X . Y
AWG
22
22
22
Background noise
To avoid possible background noise over the
speech line, it is advisable:
5) not to lay intercom or telephone cables in the
same runaway as the wires used to power
alternate current loads;
6) to avoid using the same multi-core cable to
transmit audio signals and alternate current
power supplies (lamps, amplified external
door stations, electrical door locks). Always
use separate wires for alternate current
power supplies;
7) for name-plate lamps, to use an additional
12Vac transformer (PRS210 type) with suit-
able power (consumption is 75mA for each
lamp) with 2 power supply wires separate
from audio wires;
8) in case of long distances between the exter-
nal door station and the last videointercom,
to place the power supply near by the exter-
nal door station.
1+1
INTERCOMS *
4+1
VIDEOINTERCOMS
For the video connection see page 51.

FARFISA INTERCOMS ECHOS Specifications

General

Brand	FARFISA INTERCOMS
Model	ECHOS
Category	Intercom System
Language	English