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MRP-4424 Document 15180 Rev D 03/12/97 15180:D
3.2
Initiating Device Circuits
Zones
Wire all alarm initiating devices sequentially for proper supervision. Initiating devices include: manual pull-
stations, heat, photoelectric and ionization type detectors; and waterflow alarm devices. Refer to the
Fire•Lite Device Compatibility Chart, for suitable two-wire smoke detectors.
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-
+
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+
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+
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+
-
+
-
Style D
Initiating Device
Circuit
Manual
Pull Station
Heat Detector
Two-wire
Smoke Detector
Abort
Switch
Manual
Release
IDC #1
IDC #2
IDC #3
IDC #4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
4.7K, 1/2-Watt
(part # 71252 UL listed)
4.7K, 1/2-Watt
(part # 71252 UL listed)
Notes:
1) Observe polarity when connecting polarized devices.
2) All circuits are supervised and power limited
3) Leave Dummy Load (provided) on all unused circuits
Style B
Initiating Device Circuit
B+ A+ A- B- B+ A+ A- B- B+ A+ A- B- B+ A+ A- B-
4.7K, 1/2-Watt (part # 71252 UL listed)
TB4
Figure 3.2-1: Example of Initiating Device Circuits
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