© 2022 All rights reserved. Data subject to change without notice.
79
Rev. C | 2022.02
FCS - Operation Manual
For Relay 3:
• Set trigger level (T1) to 6 (the 6 indicates P6, Priority 6)
• Set Alrm to F (Fault)
• Set trigger level (T2) to 7 (the 7 indicates P7, Priority 7)
• Leave the remaining settings as their default values (-, ###, 0)
• Press Save
For more information on Relay logic, refer to Section 12.2
With these settings, the system will follow the Title-24 requirements. The system will go into
fault if the STEL or TWA values exceed the pre-programmed levels. When the start time (8am
on weekdays or 8:30am on Saturday) passes, the STEL and TWA value will be zeroed. The
system will indicate a fault if the calibration expired date has passed.
12.4.5 RDM Channel Selection Priority Example
SCENARIO:
In a facility with an ice rink and a restaurant, you want the RDM in the restaurant
to only display the Carbon dioxide (CO
2
) gas readings from the sensor in the CO2 tank
room and the RDM mounted at the second door entrance of the chiller room to display only
Ammonia (NH
3
) readings. Each RDM is attached to a remote strobe.
NOTE:
The priority numbers, channel numbers and relay numbers used in the examples are
arbitrarily chosen. In real life it is common to start with the first unused number and proceed
from there.
Let’s say Channel 1 is CO
2
and Channel 2 is NH
3
.
In the Config Channel Menu /
Priority Logic
:
For Priority 8:
• Choose RDM Channel Select
• Set the Modbus ID of the RDM you want to have display the CO
2
• Set the trigger for the Buzzer to -
• Set the trigger for the Strobe to LOW
• Press Save
For Priority 9:
• Choose RDM Channel Select
• Set the Modbus ID of the RDM you want to have display the NH
3
• Set the trigger for the Buzzer to LOW
• Set the trigger for the Strobe to LOW
• Press Save