© 2022 All rights reserved. Data subject to change without notice.
73
Rev. C | 2022.02
FCS - Operation Manual
from there.
12.4.1 Gas Concentration Priority Example
SCENARIO:
There are 3 single channel, CO gas detectors covering an area monitoring the
levels of CO gas. Each gas detector has been assigned a channel number on the FCS. Relay
1 on the FCS has been configured to control an exhaust fan. There are several workers in
this area and it is company policy that the CO levels should never be allowed to reach the
standard 25 ppm for occupancy. However, you do not want the fans continuously running.
In the Config Channel Menu / NEXT /
Relay Logic
:
For Relay 1:
• Set trigger level (T1) to 1 (the 1 indicates P1)
• Set Alarm to L, for Low alarm
• Set Logic to OR
• Set trigger level (T2) to 1 (the 1 indicates P2)
• Set Alarm to M, for Mid alarm
• Set Logic to ###
• Leave trigger level T3 as 0 and the last Alarm value blank
• Press Save
For more information on Relay Logic, refer to Section 12.2 Assign Priority Levels to Relay,
Strobe, Horn & Audible.
In the Set Alarm Menu (passcode 2012) /
Channel Alarms
:
For EACH of the 3 Channels (sensors):
• Set High Alarm 100 ppm
• Set Mid Alarm point at 25 ppm
• Set Low Alarm at 10 ppm
• Set ASC - ascending
For more information on Channel Alarms, refer to Section 7.4 Set Channel Alarm Setpoints.
In the Config Channel Menu (passcode 3022) /
Priority Logic
:
For Priority 1:
• Choose Gas Concentration
• Set QTY to 3
• Leave DRE and ORE OFF
• Leave J Level and J Timer as 0
• Press Save