golmar Vista Nexa Manuel D'installation page 117

116
F
loor distribution with D4L-R5R distributor.
istribution: We will situate one or more
D
D4L-R5R video distributors on each floor
(one for each 4 monitors) and a junction
box for connection wires '+', '-', 'A/D' and its
later branch to
the installed equipment.
will cut all the independent call lines
coming from the door panel (currently
connected to ground) and we will connect
them to the ground assigned terminal of the
junction box. The number of independent
call lines remaining on that floor will be
equal to the number of apartments, the rest
will continue to the following floor. We must
connect the ones that remain to the ground
of junction box, the rest will be joined and
connected to ground of the junction box to
the following floor. We will do the same with
the wires '+' and 'A/D' (assign terminal for
'+' and other terminal for 'A/D' in the
junction box), the video wires will be
connected to the D4L-R5R distributors, as
shown in the drawings.
To the
apartment
partments: We will disconnect the telephone and connect the monitor following the corresponding
A
instructions indicated for the door panel. If a parallel monitor is needed then an additional power
supply must be installed on that floor (see page 126), however if the parallel unit to be installed is a
telephone or call repeater, then additional power is unnecessary. Only one additional unit per
apartment can be installed. The maximum number of terminals in total is 200 (including parallel units).
IMPORTANT:
D4L-R5R distributor may be used only 2 of the 4
outputs are connected to one apartment with 2 monitors, (see page 126).
We must be sure that in the apartments there are no relays, call repeaters or parallel
telephones left over from the previous installation, otherwise serious damage could be
caused to the new system or even to the apartment (they could burn).
We
To the
JP1
apartment
+
+
_
+
A/D
Junction Box
Before the change
To the next floor
To the
apartment
To the
apartment
Common wires
To the door panel
After the change
To the next floor
D4L-R5R
_
Vout
+
+
Vin
_
_
To the door panel
distributed outputs
INSTALLATION
To the
apartment
To the
apartment
Independent wires
To the To the
apartment apartment
_
+
A/D
, when one of these