It is common industry practice that if the CO2 levels in a room reach 1000PPM, the ventilation rate should be at a rate that helps keep the room at or below 1000PPM. Many vendors of ventilation controllers have two ventilation rate settings: the rate for when the CO2 level is below 1000PPM and the rate for when the CO2 level is above 1000PPM. Based on our data, Pelican has found that two ventilation rate settings does not provide the best approach to properly ventilating a room.
If the goal is to keep CO2 levels at or below 1000PPM, the ventilation system should begin to provide more ventilation as the CO2 levels rise, in response to more people enter the room, instead of being too late because the system waited until the CO2 levels were already at 1000 PPM.
Because of our theories, Pelican designed their system to dynamically adjust the ventilation rate as the CO2 levels rise. By setting the CO2 Ventilation to 800PPM, it allows Pelican to providing additional ventilation as people enter the room. This has shown to maintain better indoor air quality and energy efficiency in relation to the number of people in a room.