120
INSTALLATION
R
eassignment of conductors.
Given that we must adapt to the available wiring, in some installations we may have to reassign
some independent wires in order to use to reinforce the positive. This reassignment will be done in
the section between the door panel and the first distributor.
As a general rule, when the cross section of the positive wire is less than 0.5mm and a minimum of 5
2
independent wires dedicated to negative are available, then for each 3 independent wires we will
use 1 to reinforce the positive.
If the riser wiring shows clear signs of deterioration or does not comply with the minimum
requirements (see page
), then the installation riser must be replaced. For this, Golmar
95
recommends using the
cable. If the branch connections to the apartments are in good
RAP-8415
condition then their replacement will not be necessary.
I
f you have doubts about how to allocate the available wires, please contact our technical-
commercial department.
The power supply is connected to a point
somewhere between the door panel and
the first distributor:
-Improves the electricity supply by reducing
the distance between the power supply
and farthest monitor.
-Less resistance to video-audio interference,
pay careful attention to the cross section of
the ground wire. This resistance will
deteriorate the greater the distance
between the power supply and door panel.
-
Greater possibility of interference when installing an alternating current door release
(requires a transformer
and 4 wires available between the door panel and power
TF104
supply),
see page
and 12
125
6.
-The installation of a direct current door release is recommended.
-The installation of a direct current door release is recommended.
119
INSTALLATION
P
o
wer supply and lock release.
The power supply's position in the installation and the way it's connected to the system can affect
its performance. Pay careful attention to this point in order to obtain maximum performance
from the video door entry system.
The power supply is connected to the door
panel, which in turn, is connected to the
riser:
-Deteriorates the electricity supply by
increasing the distance between the power
supply and farthest monitor, pay careful
attention to the cross section of the positive
wire.
-Greater resistance to video-audio
interference.
-Greater protection against interference when installing an alternating current door release
(requires a transformer
and 4 wires available between the door panel and power
TF104
supply),
.
see page
and 12
125
6
We will normally come across the following possibilities:
V+ V-+ A/D
Independent wires used
to reinforce positive
Independent wires used
for ground (5 minimum)
If the conductors between door panel-power supply use a conduit independent of the rest
of the installation:
If the conductors between door panel-power supply use the same conduit as the rest of the
installation:
Summary of Contents for Vista Nexa
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