Notifier NFS 2-8 - Page 25

997-492-000-5, Issue 5
June 2009
EN 54 & ISO 7240 2-8 Zone Conventional Fire Panel - Installation & Configuration Manual
21
470R
(nominal)
470R
(nominal)
470R
(nominal)
470R
(nominal)
+
+
-
-
MCP
MCP
Main PCB Zone
Input Terminations
Main PCB Zone
Input Terminations
Refer to Section 6.4.1 for details on standby battery sizes
and maximum number of zones.
Note: This method is not recommended for new
installations.
Refer to Section 6.4.1 for details on standby battery sizes
and
maximum number of zones.
Capacitor:
Use 0.47µF.
Capacitor:
Use
0.47µF.
4k7
Schottky diode bases can be used.
Schottky diode bases can be used.
Method 2:
Supports new and existing installations using Active End-
of-Line (AEOL) - PN: 020-417. For the AEOL to function
correctly an additional 10μF stabilising capacitor must
be fitted across the zone terminals (not supplied - order
PN: 020-743).
Method 3
Supports existing installations where there is a 4K7 resistor
EOL fitted already and it is preferable to install the panel
without modifying the existing wiring. Call points must be
wired nearer to the panel than detectors.
all detectors located between the removed device
and the panel. Although the use of a capacitor EOL
device meets the requirements of the standards,
method 2 should be used when alarm latching of
all detectors is required with one removed.