CO and NO₂ are two toxic gases that emit from the exhaust of diesel and gasoline fueled cars. CO is an asphyxiant that has a 220% greater binding affinity with blood cells than oxygen has. NO₂ is a respiratory irritant that inflames the lining of the lungs and reduces the bodies immunity to lung infections.

The International Mechanical Code 2021, 404.1 states:

‘Mechanical ventilation systems for enclosed parking garages shall operate continiuously or shall be automatically operated by means of carbon monoxide detectors applied in conjunction with nitrogen dioxide detectors. Such detectors shall be listed in accordance with UL 2075 and installed in accordance with their listing and the manufacturer’s instructions.’

As a general guideline, one detector can cover a 50-foot radius in outdoor environments and a 25-foot radius indoors.

Gas detection system can significantly reduce energy consumption and costs, as code requires ventilation to operate continuously or at a reduced rate with a gas detection system and ramp up in the case of significant gas levels (IMC 404.1).

Yes, integration between the detectors and a control panel is possible using our ParkSafe panel. It directly manages ventilation systems via 6A relays that respond to gas alarm levels and includes a 0–10V output for controlling variable frequency drives (VFDs).

Depending on the application, our CO and NO₂ detectors can communicate either with the ParkSafe control panel or directly with a Building Management System (BMS) to control ventilation based on the programmed sequence of operations.