FireSwitch108 - 15 -
3. Combination CO and Fire Alarm Connections:
To comply with requirements of applicable UL
and NFPA standards Fire Systems (UL 864), CAN/
ULC-S527-99 Control units for Fire Alarm Systems,
NFPA 72, and NFPA 720 audible and visual notifica-
tion appliances have to be used on different circuits.
Systems has to be monitored by a supervising station
and emergency response provided in accordance with
NFPA 720.
For CO Alarms, the system must be monitored
by a supervising station with emergency response.
CO combination mode settings are not accessible
through IP interface. In CO alarm mode the unit will
indicate CO alarm which will be superseded by fire
alarm, if fire alarm is initiated. In order for CO alarm
mode to operate, horns and strobes have to be wired
separately. The outputs for strobes should be pro-
grammed for 1e mode. The outputs for horns should
be programmed for 2e mode. FACP has to initiate out-
put 2 only during CO alarm and Output 1 and Output
2 during fire alarm condition.
To silence the horns during fire alarm condition
Output 2 has to be turned off, but Output 1 has to stay on.
During CO alarm (Input 2 initiated only) horns will generate CO alert sequence (Temporal 4 pattern) and
strobes will flash every second. During fire alarm condition (Input 1 only or Inputs 1 and 2) strobes will flash
and horns will generate Temporal3 pattern, unless silenced.
Programming and LCD Legend:
LCD Legend Description
1e Generates strobe sync signal
2e
Generates T3 horn temporal pattern
or T4 temporal pattern (see above).
Horn settings for CO alarm:
Gentex, Potter - Horns must be set to Steady mode.
System Sensor - Horns must be set for a coded output.
4. Non-Synchronizable NAC Appliances:
When using NAC appliances not designed to sup-
port synchronization feature, it is recommended to
use separate output circuits for audible notification
appliances (horns) and visual notification appliances
(strobes).
Program the FireSwitch to follow Input 1 [IN1] and
for audible notification appliances to follow Input 2
[IN2]. This will allow, when using two (2) outputs
from the FACP, to support silencing of audible noti-
fication appliances. When using only one (1) FACP
output, program to follow Input 1 [IN1]. The units
outputs can each be set for the desired NAC drive
signal, such as Code 3 (Output Programming
Selection Table, pg. 9). Non-synchronizable Audible
Appliances will follow the sequence, when feature
is selected.
FACP
(Fire
Alarm
Control
Panel)
10K
EOL
INP1 RET1 INP2 RET2 OUT1 OUT2 OUT3 OUT4
NEGATIVE
POSITIVE
10K
EOL
10K
EOL
10K
EOL
CO
Alarm
Fire
Alarm
Fire
Alarm
2e
1e
2e
1e
Fig. 8
10K
EOL
INP1 RET1 INP2 RET2 OUT1 OUT2 OUT3 OUT4
NEGATIVE
POSITIVE
10K
EOL
10K
EOL
10K
EOL
From FACP NAC 1
Return to EOL for
Class B configuration.
Return to FACP for
Class A configuration
Return to EOL for
Class B configuration.
Return to FACP for
Class A configuration
From FACP NAC 2
Fig. 9
The FACP to INP1, INP2 wiring connections are to
be in a conduit within 20 ft.
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