Aiphone GT-BCX Quick Start Guide
GT SERIES
Multi-Tenant Entry Security
QuikStart Installation Guide
Installation Videos
How-To
Video Link
ATTENTION:
This is an abbreviated Installation Manual, addressing wiring and programming of the GT Series. The
complete GT Series Installation Manual is located on the CD supplied with the GT-BC Bus Control
Unit. Access the PDF le from the CD and print the entire manual if a hard copy is needed. If installing a digital
entry system, the program for loading names and numbers for each tenant is also located on the CD.
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
GT-1A
1P x 2
1P x 2
1P x 2
GT-1C
Trunk Line No. 2
Loop wiring
(max. 25)
Trunk Line
No. 3-6
GTA-DES
12-5/8"
SYSTEM WIRING: AUDIO ONLY DIRECT SELECT & DIGITAL DISPLAY ENTRANCE STATIONS
Loop Wiring Method
Max. of 25 stations per loop / trunk
R1 R2INR1 R2
WIRE TYPE
872002
20AWG 2 Cond.
Solid Non Shielded
PE Insulated
871802
18AWG 2 Cond.
Solid Non Shielded
PE Insulated
POWER
PS24
PS-2420UL
PT
Power Transformer
(Use proper power
for the Strike or Mag
Lock being used).
OUT
R1 R2INR1 R2
OUT
R1 R2INR1 R2
OUT
R1 R2INR1 R2
OUT
R1 R2INR1 R2
OUT
R1 R2INR1 R2
OUT
Max. wire distance from distribution point to any tenant is 980’.
Max. cumulative wire distance is 8200’.
Refer to page 9 of the GT Series Installation Manual for complete wire distance information.
Homerun Wiring Method
R1 R2INR1 R2
OUT
R1
R2
R1
R2
OUT
R1 R2INR1 R2
*DP
R1 R2INR1 R2
OUT
R1 R2INR1 R2
OUT
R1 R2INR1 R2
GT-BC
OUT
R1 R2INR1 R2
OUT
PS24
R1
R2
+
-
+
-
*Distribution Point:
NOT provided by
Aiphone. This can be
any device that parallels
or commons the R1 / R2
connection. (Terminal
strip, punch down block,
wire nuts, etc.)
Tenant stations shown are
the GT-1A. The GT-1D
tenant stations can also
be used and wire in the
same manner.
2 | GT Series QuikStart Guide
Door
Strike
R1 R2R1 R2
ELM
ELC
ELB
PT
CN2
CN1
CN2
CN1
CN1
CN2
Mag
Lock
PS24
ELM
ELC
ELB
PT
+
-
+
-
CN2
CN1
CN3
CN100
16-1/8"
GT-DM
16-3/4"
GTV-DES104
1P x 2
1P x 2
1P x 2
GT-1C
Trunk Line No. 2
Loop wiring
(max. 25)
Trunk Line
No. 3-6
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
SYSTEM WIRING: AUDIO / VIDEO ALL-IN-ONE & DIGITAL ENTRANCE STATIONS
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
GT-1C, GT-1CB, GT-1CS
5-1/2"
Loop Wiring Method Homerun Wiring Method
Max. of 25 stations
per loop. SW1 switch
must be set to A on last
monitor in the wire loop.
A B
SW1
Max. of 6 GT-4Zs per loop. SW1 switch must be
set to A on last GT-4Z in the wire loop. Each tenant
station homeruns to a GT-4Z and its SW1 switch
must be set to A.
A B
SW1
A B
SW1
A B
SW1
A B
SW1
A B
SW1
B1 B2R1 R2
B1 B2R1 R2
B1 B2R1 R2
B1 B2R1 R2
B1 B2R1 R2
B1 B2R1 R2
B1 B2R1 R2
B1 B2R1 R2
OUT
IN
OUT
IN
OUT
IN
OUT
IN
A B
SW1
A B
SW1
A B
SW1
IN
B1 B2R1 R2
IN
IN
B1 B2R1 R2
IN
B1 B2R1 R2
B1 B2R1 R2 B1 B2R1 R2 B1 B2R1 R2
OUT (3) OUT (4)
OUT (1) OUT (2)
B1 B2R1 R2 B1 B2
B1 B2R1 R2 B1 B2R1 R2 B1 B2R1 R2
OUT (3) OUT (4)
OUT (1) OUT (2)
B1 B2R1 R2 B1 B2R1 R2
SW1
SW1
A
B
A
B
LINE OUT
IN
R1 R2B1 B2
LINE OUT
IN
R1 R2B1 B2
R1 R2
GT-4Z
GT-4Z
B1 B2R1 R2
B1 B2R1 R2B1 B2R1 R2
B1 B2R1 R2
B1 B2R1 R2
IN
A B
SW1
IN
A B
SW1
IN
A B
SW1
IN
*DP
R1
R2
R1
R2
*Distribution Point:
NOT provided by
Aiphone. This can be
any device that parallels
or commons the R1 / R2
connection. (Terminal
strip, punch down block,
wire nuts, etc.)
Tenant stations shown
are the GT-1C. The
GT-2C or GT-1M-L
tenant stations can also
be used and wire in the
same manner.
Note: GT-2C requires
a separate PS-2420UL
power supply.
Door
Strike
B1 B2 B1 B2 B1 B2 B1 B2 B1 B2 B1 B2
+
A1 A2 A1 A2 A1 A2 A1 A2 A1 A2
-
A1
A2
GT-VBC
CN3
R1
R2
GT-BC
PS24
+
-
A1 A2R1 R2
+
-
R1
R2
ELM
ELC
ELB
PT
+
-
Mag
Lock
+
-
ELM
ELC
ELB
PT
+
-
CN1
CN2
CN1
CN3
PS24
CN100
3
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