D263/D273 Series
| Installation Instructions | 3.0
Wiring
Figure 6:
D273THS/D273THC/D273THCS Wiring
1
2
3
1 2
3 4
5 6
7 8
Input Voltage
10 to 30 VDC
+
IN
+
OUT
–
IN
–
OUT
Alarm Contacts
Normally Open
Smoke Detector
Power
Alarm
Loop
+
–
+
–
+
IN
+
OUT
–
IN
–
OUT
9 10
Auxiliary
Contact
N
O
C
11
N
C
Black
Yellow (+24 V) or
Red (+12 V)
Blue
Blue
4
1 -
Last detector
2 -
Control panel
3 -
EOL resistor
4-
D275 EOL Power Supervision Module
Note: Auxiliary contact wiring is for the D273THS,
D273THC, and D273THCS Models only
Figure 7:
D273IS Wiring
Smoke Power
+
–
+
–
Heat Alarm Loop
Smoke Alarm Loop
+
–
2
1 2
3 4
Input Voltage
10 to 30 VDC
+
IN
+
OUT
–
IN
–
OUT
5 6
7 8
Isolated Heat
Output
+
IN
+
OUT
–
IN
–
OUT
9 10
Auxiliary Contact
Normally Open
11
Black
Yellow (+24 V) or
Red (+12 V)
Blue
Blue
12
+
IN
+
OUT
–
IN
–
OUT
1
3
4
1 -
Last detector
2 -
Control panel
3-
EOL
resistor
4 -
D275 EOL Power Supervision Module
Figure 8:
D273THR/D273THSR Wiring
Smoke Power
+
–
+
–
Alarm Loop
1 2
3 4
5 6
7 8
Input Voltage
10 to 30 VDC
+
IN
+
OUT
–
IN
–
OUT
Alarm Contacts
Normally Open
+
IN
+
OUT
–
IN
–
OUT
2
9 10
Trouble
Relay
T-
T+
1 2
3 4
5 6
7 8
Input Voltage
10 to 30 VDC
+
IN
+
OUT
–
IN
–
OUT
Alarm Contacts
Normally Open
+
IN
+
OUT
–
IN
–
OUT
9 10
Trouble
Relay
T-
T+
3
1
1 -
Last detector
2 -
Control panel
3-
EOL
resistor
Bosch Security Systems, Inc. | 02/06 | 31341J
Available from A1 Security Cameras
www.a1securitycameras.com email: [email protected]
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