Siemens PAD-3 - Page 35

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Fire Control Unit
1+
1-
COM
NC
1+
1-
COM
NC
PAD-3
1+
1-
COM
NC
Notification
Circuit
+-
Fire Alarm
Zone
EOL of Trouble
Contact from FACP
Trouble contacts
monitored by
FACP zone
Twisting
Two Wires
Two Separate
Wires
Correct
Incorrect
Incorrect
Looping
Single Wire
PAD-3
PAD-3
P/N 140-820405
24K EOL of
NAC Circuit
CAUTION: For system supervision,
DO NOT USE LOOPED WIRE UNDER TERMINALS.
Break wire run to provide supervision of connections.
Figure 4-7. Multiple PAD-3s activated by a single notification circuit