EQUIPMENT: FIRECLASS DUO -CEL WRITTEN BY: RKP
PUBLICATION: OM_FC_DUO-CEL_INST CHECKED BY: AP
ISSUE No. & DATE: 0 01/03/12
PAGE 19 of 29
To clear the invalid condition, return both DIL
switch 4 & 9 to the OFF position.
6.4 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.
6.5 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.
Ensure no detector bases have diodes fitted if using
this mode.
NOTE: This facility is not available on the twin-
wire panel.
Resistor EOL monitoring is provided for older
installations where it is impractical to change
the EOL resistor for a capacitor.
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.
6.6 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 Sounders are pulsed (1 second on, 1 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
detector alarms, the right zonal fire LED operates
for MCP alarms.
NOTE:
It is recommended that TYCO CP211 call points
are used on zones with Twin-Wire sounders in
order to reduce the zone load when more than
one call point is operated. You can use call
points with 360R resistor fitted as an alternative
but operation of more than one call point will
increase the zone load and may prevent the
Twin-Wire sounders from operating correctly.
If Twin-Wire sounders are not being used then
the TYCO CP211 or MCP with resistor may be
used (MCP resistor needs to be 220R to 360R).
Manual call points with 470R to 1k will be
indicated as a detector alarm instead of a MCP
alarm.
Alert mode will not work correctly with Resistor
EOL due to the inability to correctly
discriminate between detectors and MCPs when
EOL resistors are used.
6.7 Selectable Zonal or General Alarm
Sounder operation
The Zonal Alarms DIL switch allows the sounder
circuits to operate zonally in line with the alarm
zone. The actual operation of the alarm circuits will
vary depending on the type of zone detection and
number of zones available on the panel.
Twin-wire panel (1 to 8 zones):
All twin-wire sounders operate zonally, sounder
circuits on the motherboard operate as general
alarms (i.e. all four alarm circuits on the
motherboard operate for any zone fire)
Standard panel, 1 to 4 zone panels:
Sounder circuits 1 to 4 operate individually for a
fire condition on the respective zone. 1 and 2-
zone panels have 2 sounder circuits).
Standard panel, 8-zone panel:
Sounder circuits 1 to 4 operate as general
alarms (i.e. all four alarm circuits on the
motherboard operate for any zone fire).
6.8 Buzzer Disable
The Disable Buz DIL switch allows the panel buzzer
and Buzzer Active output to be disabled so that
they do not operate for alarms or faults. The panel
buzzer will still operate for button presses.
The panel does not give any indication that the
buzzer has been disabled. This feature is
provided for use during panel commissioning
and maintenance only. Ensure that the DIL
switch is returned to the OFF position after
commissioning/maintenance tests are
complete.
6.9 Earth Fault monitoring.
The DUO-CEL panel is designed to monitor for low
impedance faults to earth on the field cables. Earth
faults can lead to false alarms or failure to operate
the sounders or other outputs.
For installations where earth fault monitoring is
unsuitable, it can be disabled by removal of the
insulated jumper link. The link can be placed just on
one pin rather than across both pins.
Earth Fault monitoring should be disabled only
after all field cabling has been tested and
confirmed to be free from faults.
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