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Figure 2:
Mounting a D263/D273 Series
Detector
1
2
3
1 - Wire entrance
2 - Locking tab
3 - Mounting holes
3.0 Wiring
Before connecting or disconnecting any
D263/D273 Series Detectors, remove all
AC and battery power from the FACP.
Failure to do so can result in personal injury
and damage to the equipment.
The terminal block is removable. It might be easier to
remove the terminal block from the detector before making
the wire connections. Remove the terminal block by pulling
it back and then pulling up. Refer to Figures 3 through 8 on
pages 3 through 5 for wiring details.
When all wiring connections are made, connect the detector
to the mounting plate by twisting it clockwise into place.
Figure 5:
D273/D273TH Wiring
–
Smoke Detector
Power
+
Alarm
–
+
Loop
2
1 - Last detector
2 - Control panel
Bosch Security Systems, Inc. | 02/06 | 31341J
D263/D273 Series | Installation Instructions | 3.0
Input Voltage
Alarm Contacts
10 to 30 VDC
Normally Open
–
–
+
+
–
–
+
+
IN
OUT
IN
OUT
IN
OUT
IN
OUT
1
2
3
4
5
6
7 8
Available from A1 Security Cameras
www.a1securitycameras.com email: sales@a1securitycameras.com
Refer to your control panel's installation
instructions for EOL resistor selection.
Figure 3:
D263 Series/D263TH Wiring
–
IN
1
–
1
+
1 - Alarm loop
2 - EOL resistor
Figure 4:
D273ES/D273THES Wiring
2
–
Smoke Detector
Power
+
Alarm
–
+
Loop
1 - Last detector
2 - Control panel
3 - EOL resistor
1
Input Voltage
Alarm Contacts
10 to 30 VDC
Normally Open
–
–
+
+
–
–
+
+
IN
OUT
IN
OUT
IN
OUT
IN
OUT
1
2
3
4
5
6
7
8
3-
EOL resistor
4 - D275 EOL Power Supervision Module
Wiring
–
+
+
–
–
+
+
OUT
IN
OUT
IN
OUT
IN
OUT
2 3
4
1
2
3
4
1
Input Voltage
Alarm Contacts
10 to 30 VDC
Normally Open
–
–
+
+
–
–
+
+
IN
OUT
IN
OUT
IN
OUT
IN
OUT
1
2
3
4
5
6
7 8
Black
Yellow (+24 V) or
Red (+12 V)
Blue
Blue
3
4
2
EOL
Relay
E+
E
9 10
3
3
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