FireClass Prescient III - Page 13

EQUIPMENT: FIRECLASS Prescient III WRITTEN BY: RKP
PUBLICATION: OMFCPRES3IN CHECKED BY: AP
ISSUE No. & DATE: 0 02/02/12
PAGE 13 of 43
3.12.1.7. BUZZER PULSES AT END OF
DELAY
Switch OFF:- No change in the state of the
internal buzzer during the last five seconds of
the Pre-discharge delay timer.
Switch ON:- The internal buzzer pulses during
the last five seconds of the Pre-discharge
delay timer.
3.12.1.8. ZONES 1 & 2 SINGLE KNOCK
Switch OFF:- If the system is set to Auto &
Manual mode, a fire condition on both zones
1 & 2 is required to start the pre-discharge
delay timer.
Switch ON:- If the system is set to Auto &
Manual mode, a fire condition on either zone
1 or zone 2 will start the pre-discharge delay
timer.
3.12.1.9. NO DISCHARGE PRESSURE
SWITCH
Switch OFF:- The Panel only indicates SYSTEM
DISCHARGED when the GAS REL. input is
activated (via a Discharge Pressure switch).
Switch ON:- The panel indicates SYSTEM
DISCHARGED as soon as the actuator
circuits are activated.
3.12.1.10. ACTUATOR S/C DISABLE
Switch OFF:- The actuator circuits are monitored
for open & short circuit faults.
Switch ON:- The actuator circuits are only
monitored for open circuit faults. Used for
open-circuit fault monitoring of the solenoid
coil without a series end-of-line resistor.
3.12.1.11. RESET INHIBIT PERIOD
Five switches allow the Extinguishing System
Reset Inhibit timer to be configured from 0 to 30
minutes in 1-minute increments. Any of the five
switches in the ON position adds to the timer
value, up to a maximum of 30 minutes. See
Table 1.
3.12.1.12. CLEAR ACTUATORS AFTER 1 MIN
Switch OFF:- The actuator circuits are energised
until the Extinguishing System is reset.
Switch ON:- The actuator circuits are only
energised for 1 minute and then are de-
energised.
NOTE:
This facility is only to be used where the
actuators connected to the actuator circuits
remain activated when the power is
removed and require manual resetting. This
facility is not intended to control the gas
discharge period. It is only provided as a
means to reduce current consumption
during gas discharge.
Table 1 – Reset Inhibit Settings
Reset
Inhibit
Length
(minutes)
SW2-2
(1min)
SW2-3
(2min)
SW2-4
(4min)
SW2-5
(8min)
SW2-6
(16min)
0
OFF
OFF
OFF
OFF
OFF
1
ON
OFF
OFF
OFF
OFF
2
OFF
ON
OFF
OFF
OFF
3
ON
ON
OFF
OFF
OFF
4
OFF
OFF
ON
OFF
OFF
5
ON
OFF
ON
OFF
OFF
6
OFF
ON
ON
OFF
OFF
7
ON
ON
ON
OFF
OFF
8
OFF
OFF
OFF
ON
OFF
9
ON
OFF
OFF
ON
OFF
10
OFF
ON
OFF
ON
OFF
11
ON
ON
OFF
ON
OFF
12
OFF
OFF
ON
ON
OFF
13
ON
OFF
ON
ON
OFF
14
OFF
ON
ON
ON
OFF
15
ON
ON
ON
ON
OFF
16
OFF
OFF
OFF
OFF
ON
17
ON
OFF
OFF
OFF
ON
18
OFF
ON
OFF
OFF
ON
19
ON
ON
OFF
OFF
ON
20
OFF
OFF
ON
OFF
ON
21
ON
OFF
ON
OFF
ON
22
OFF
ON
ON
OFF
ON
23
ON
ON
ON
OFF
ON
24
OFF
OFF
OFF
ON
ON
25
ON
OFF
OFF
ON
ON
26
OFF
ON
OFF
ON
ON
27
ON
ON
OFF
ON
ON
28
OFF
OFF
ON
ON
ON
29
ON
OFF
ON
ON
ON
30
OFF
ON
ON
ON
ON
30
ON
ON
ON
ON
ON
3.12.1.13. SILENCE ALARMS BEFORE
RESET
Switch OFF:- The panel can be reset from the
alarm condition without first silencing the
alarms. (A requirement of EN54-2)
Switch ON:- The panel cannot be reset from the
alarm condition until the alarms have been
silenced. (A recommendation of BS5839).
3.12.1.14. AUTO/MANUAL OUTPUTS
Switch OFF:- Open Collector Output 1 operates
on Emergency Hold Active. Open Collector
Output 2 operates on Emergency Abort
Active.
Switch ON:- Open Collector Output 1 operates
when panel is in AUTO & MANUAL mode.
Open Collector Output 2 operates when
panel is in MANUAL ONLY mode.
3.12.1.15. CONFIG SLU
When in the ON position, allows the type code of
any connected SLUs to be configured on the
panel. See section 4.2.3 for configuration details.
3.12.1.16. 3k9 EOL
When in the ON position, zones 1, 2, Aux Zone
& Manual Release are monitored for a 3k9 End-