EQUIPMENT: FIRECLASS DUO-CEL
PUBLICATION: OM_DUO-CEL_APP
ISSUE No. & DATE: 2 20/06/18
PAGE 22 of 46
status of the repeater configuration is also
displayed on the Repeater Fault LEDs, which are
visible when the front cover is removed.
Operation of the Select button will increment the
number of repeaters, up to a maximum of 3, after
which the number is reset to zero.
Once the required quantity of repeaters has been
configured and the configuration DIL switch is
returned to the OFF position, the panel will return to
normal operation.
Factory default: No Repeaters
9.2 Zone 1 Non-latch operation
The Zone 1 non-latch DIL switch allows zone 1 to
be set to non-latching fire indication.
In this mode a fire condition on zone 1 operates the
sounders but not the Auxiliary Fire Relay. The
alarm indication automatically clears when the fire
condition is removed from zone 1, without the need
to manually reset the panel.
9.3 Resistor EOL
The Resistor EOL DIL switch configures all zones
to monitor an end-of-line resistor (6K8 to 3K9)
instead of the default 10uF capacitor. This feature
is not available on the twin-wire panel (i.e. the
switch has no effect).
In the default mode, the panel actively checks for
the presence of a 10uF capacitor at the end of the
zone wiring. Diodes are fitted to detector bases and
removal of a detector will result in a fault condition
being raised at the panel whilst still providing power
to all devices on the zone.
In Resistor EOL mode, the panel monitors the
current drawn by the EOL resistor and indicates a
fault if the current drops below the threshold.
Diodes cannot be fitted to detector bases otherwise
a detector removal could not be detected.
Therefore, a removal of a detector will create an
open circuit and remove power from all devices
beyond the removed detector.
NOTE:
Resistor EOL monitoring is provided for older
installations where it is difficult to change the
EOL resistor to a capacitor.
In addition, detector/MCP discrimination will not
work when the zone monitoring is configured
for Resistor EOL and therefore zone alarm
dependency (coincidence detection) and Alert
Mode will not work correctly.
9.4 Twin Wire
The Twin Wire panels support Fulleon twin-wire
sounders on the zone circuits along with compatible
detectors (see section 7.1).
Each zone can monitor detectors and operate
sounders on the same two wires. The sounders are
activated by pulsing the zone voltage between
11Vdc & 24Vdc (nominal).
The EOL device consists of a Zener diode and
resistor which draws about 4mA in quiescent. A
detector head removal (assuming diode bases are
used) will result in a small voltage drop, which the
panel can monitor & indicate a zone fault.
The zones are also capable of discriminating
between detector and manual call point alarms and
so zone dependency mode is compatible with twin-
wire panels.
NOTE:
Only TYCO CP211 Manual Call Points can be
used. This is because standard call points will
apply a resistive load and if multiple call points
are operated on a single zone then the load will
be too great to allow the twin-wire sounders to
operate. The CP211 contains current limiting
circuitry such that multiple call points will draw
as much current as a single call point (current
is shared between call points) and will not affect
sounder operation. The CP211 also prevents
excessive loading on the zone when the zone
sounders are operated
9.5 Alert Mode
The Alert Mode DIL switch configures all zones to
discriminate between detector alarms and MCP
alarms. Detector Alarms are treated as Alert, MCP
alarms are treated as Evacuate.
The Sounder circuits are pulsed (1.5 second on, 1.5
second off) during the Alert alarm and operate
continuously during the Evacuate alarm.
When used in conjunction with Zonal Sounder
operation, a detector alarm will only pulse the
relevant zonal sounder circuit with all other sounder
circuits silent. A MCP alarm will operate the
relevant zonal sounder circuit continuously and
pulse all other sounder circuits.
On the display, the left zonal fire LED operates for
MCP alarms, the right zonal fire LED operates for
detector alarms.
NOTE:
Call points should be TYCO CP211 for Twin-
Wire panels. For the standard panels the TYCO
CP211 or a conventional type may be used, but
the MCP resistor needs to be 220R to 360R.
Standard call points with 470R to 680R will be
monitored as a detector alarm instead of a MCP
alarm.
This feature will not work correctly with
Resistor EOL monitoring.
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