Honeywell 301 Serie Mode D'emploi page 132

Requirement: Section 120.6(c)7Eii "The CO sensor shall be monitored by a control system. During unoccu-
pied periods the system compares the readings of all sensors, e.g. if any sensor is more than 15 ppm above or
below the average of all sensors for longer than 4 hours, the sensor has failed."
Solution: Configure an event to activate if the concentration reading of any sensor in a group is an outlier devi-
ating by 15 ppm for longer than 4 hours.
Note that this requirement is less strict that Section 120.6(c)7Eiii above because the aberrant reading can per-
sist longer. This requirement is only meaningful for garages that are rarely occupied. And the only rationale for
implementing this looser requirement would be to avoid superfluous faults.
The 301C controller can discriminate between occupied and unoccupied duration limits this by making two out-
lier events (for 30 minutes and 4 hours) and making the 30-minute event coverage period only "Daytime". The
hours of "Daytime" can be set under menu function 6. If occupancy is based on some other criterion than the
time of day, this binary condition can be accepted into the 301C controller system by a digital input channel of
a 301ADI. The event can be made conditional on the outlier and the digital input.
Note: The following requirements are from the 2013 Nonresidential Compliance Manual Appendix A form
NRCA-PRC-03-F "Enclosed Parking Garage Exhaust System Acceptance"
Requirement: Step A 3 instructs "Temporarily override the programmed sensor calibration/ replacement pe-
riod to 5 minutes."
Solution: Reconfigure the time since calibration (TSC) event time limit to 0 minutes. Alternatively, a stale car-
tridge can be temporarily plugged into the E³Point.
Note that the 301C controller/E³Point system reports time since calibration in days. Therefore, setting the time
limit to 5 minutes would cause an event to activate 1140 minutes (1 day) after calibration.
Requirement: Form NRCA-PRC-03-F step A 4 instructs "Temporarily place the system in unoccupied mode
and override the programmed unoccupied sensor alarm differential from 30% for 4 hours to 1% for 5 minutes."
Solution: Note that the 301C controller measures deviation in ppm, not percent. Change the event screen to
outlier deviation 0 ppm duration 5 minutes.
Note that Honeywell Analytics E3Point CO sensors have a resolution of 1 ppm.
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3. Events 002
Outl Gr001
- - -
dev 15ppm
dur 04 hr
3. Events 001
1or+ Gr001
- - -
TSC 00 min
3. Events 002
Outl Gr001
- - -
dev 0ppm
dur 05 min