BAC-19xxxx FlexStat Application Guide
19 AG200824A
NOTE:
If a Level 1 or 2 password is configured
for 0000 in the Advanced menu, that
password screen is bypassed in later
use.
NOTE:
To enhance security after configuration,
change the Level 2 password in the
Advanced menu. Be sure to document
the new password for future reference!
• If a
user-configured
Level 2 password has
been forgotten, use KMC
software to view the
password in the Display Objects screen. In
KMC software, both levels of passwords can
be viewed and changed as desired without
having to first enter either one.
Software Not Compatible with the FlexStat
•
Upgrade to the latest version of KMC software.
See the
BAC-190000 Series FlexStats data
for versions of KMC software that
support the FlexStat.
Input, Sensor, and Value Issues
CO
2
Level Value Is Frozen or Is 0
•
After power is first applied or the FlexStat is
restarted, the sensor goes through a warm-up
for approximately half a minute. During the
time the sensor count will be 0 ppm.
• The CO
2
models periodically self-calibrate.
During the self-calibration, the sensor PPM
reading may appear frozen and not react to
changing CO
2
.
•
Using KMC software, check that the input is
not configured as “Out Of Service.”
• See
CO
2
and DCV Sequences Are Not Working
•
Ensure that the desired CO
2
DCV mode is
enabled (under System in Settings or MSV12).
• Check that an economizer is enabled.
•
For Basic DCV, adjust the CO2 setpoint and/or
deadband (under the Setpoints menu or AV58/
AV59).
• Check that conditions for self-calibration are
met. The CO
2
sensor uses a self-calibration
technique designed to be used in applications
where CO
2
concentrations will periodically drop
to outside ambient conditions (approximately
400 ppm), typically during unoccupied periods.
•
In KMC software, check that AV57 (ROOM_
CO2) is not out of service.
CO
2
Level Is “Too High”
• To reduce nuisance complaints by occupants,
turn off visibility of the CO
2
level rotation in the
display.
• See the
section above.
Input Values Outside Expected Range
• After initial power-up, allow time for readings to
stabilize.
•
Using KMC software, check the sensor’s input
is properly configured and does not have “Out
Of Service” selected.
• Check connected sensors and input wiring. See
NOTE:
Faulty wiring on one input can
potentially cause fluctuating input
values on other inputs.
•
Check the application configuration.
• Restore the FlexStat application settings (see
Restarting the FlexStat on page 15
reconfigure the settings
Humidification/Dehumidification Issues
•
Check the application configuration.
• See also
.
