With all sensors active and all sensors reading below the 25 ppm threshold, the VFD’s will run the fans at minimum speed. VFD’s will be programmed by others. The ventilation rate should be at least 0.15 cfm/ft2 when the garage is scheduled to be occupied.
CO System will automatically detect contaminant levels and stage fans to insure provided acceptable contaminant levels are maintained.
CO shall be monitored with at least one sensor per 5,000 ft2, with the sensor located in the highest expected concentration locations, with at least two sensors per proximity zone. System will be installed using engineered plan locations.
CO concentration at all sensors is maintained 25 ppm at all times.
CO sensors are:
Certified by the manufacturer to be accurate within plus or minus 5% of measurement.
Factory calibrated.
Certified by the manufacturer to drift no more than 5% per year.
Certified by the manufacturer to require calibration no more frequently than once a year.
Self-check for sensor failure. Upon detection of a failure, the system shall engage the fans and signal sensor failure.
F. Sensor will indicate when it has not been calibrated according to the manufacturer’s and indicate as a failed sensor.
