INSTALLATION & MAINTENANCE MANUAL • Approved Document No. DFU7004010 Rev 3 • Page 8 of 24
LPCB APPROVED CFP 2/4/8 ZONE FIRE ALARM PANEL
Typical sounder circuit wiring
Four conventional sounder circuits are available on the fire alarm panel. These can accommodate up to 40
polarised sounders (at 20mA) or 32 bells (at 25mA) per system. If a full complement of sounders or bells are to
be used, they should be split as equally as possible across all four sounder circuits.
Figure 5 : Typical sounder circuit wiring
All sounders must be polarised as unpolarised sounders will show a sounder fault.
A 6k8 end-of-line resistor (provided in the panel’s accessory pack) must be connected at the end of each sounder
circuit to allow the wiring to be monitored.
The wiring for each sounder circuit should be connected to the relevant 5mm connector block on the Main
Control PCB and their screens terminated at the panel’s base earth distribution post (see page 13 for detailed
second fix connection information).
Typical auxiliary input wiring
Two non-latching auxiliary input connections are available on the panel, as detailed below:
Alert Input (ALERT): Operates the sounders intermittently when connected to 0V.
Class Change Input (CC): Operates the sounders continuously when connected to 0V.
If either of the above are triggered, they WILL NOT operate the panel’s remote or auxiliary fire outputs.
Figure 6 : Typical auxiliary input wiring
Connect the wiring for each
input to the relevant 5mm
connector block on the Main
Control PCB and terminate
their screens at the panel’s base
earth distribution post (see
page 13 for more details).
END OF LINE
RESISTOR
(6k8 Ohm)
POLARISED
SOUNDER
POLARISED
SOUNDER
+
+ +
–
+
POLARISED
SOUNDER
+
✗
DO NOT SPUR
(wiring not
monitored)
PANEL
SOUNDER
CIRCUIT
TERMINALS
ALERT
CC
0V
CLASS
CHANGE
INPUT
ALERT
INPUT
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