5.
7
(MT13 - En 2015)
5
INSTALLATION NOTES
Multi-way installation with 2 main common entrances and 2 risers, each riser with 1 secondary door station
Notes.
The total length of (E1), (E2).. (En) should not exceed 300 meters.
The section C is the maximum distance of the installation (distance between farthest internal station and external door station).
To calculate the distance, you must add the section F of a riser and the section B of the farthest external door station. Repeat the calculation with
the other risers. Each measurement must not exceed 150 meters.
Sections B and F may vary according to the installation requirements, as long as the sum does not exceed 150 meters of distance C. For higher
distances one or more line amplifiers art. 2223C must be used (see application diagrams on pages 5.11 ÷ 5.13).
Example of videointercom installation with 2 main common entrances and 3 risers (“a”, “b”, “c”), each riser with 1 secondary door station:
- riser "a" - section F 70 m + section B (external secondary door station) 50 m = total 120 m.
- section F 70 m + section B (farthest external main door station) 80 m = total 150 m.
- riser “b”
- section F 50 m + section B (external secondary door station) 20 m = total 70 m.
- section F 50 m + section B (farthest main external door station) 80 m = total 130 m.
- riser “c”
- section F 110m + section B (external secondary door station) 40m = total 150 m.
- section F 110 m + section B (farthest external main door station) 180 m = total 290 m (add one amplifier art. 2223C and transformer
PRS210 at the beginning of section F of riser “c”)
DV...
DV...
DV...
DV...
A
A
C
B
A
A
B
B
En
En
E1
E1
F
F
VC
VC
CT
PE
AP
CT
En-1
En-1
AP
AL
DL
DM
DM
DM
VC
VC
PE
AL
AL
AP
AP
SM
SM
PE
PE
AL = Power supply 2221S
or 2221ML
AP = Power supply 2220S
CT = Intercom
DL = Distributor DV2420
DM= Distributor DM2421
DV = Video distributor
PE = Door station
SM = Riser buffer 2231
VC = Videointercom
V
I
D
E
O
I
N
T
E
R
C
O
M
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