Parking Garage Co Ventilation Systems

Garages or workshops with floor areas more than 500 ft2 50m2 should always have mechanical ventilation with fans.

Parking garage co ventilation systems. In a garage or workshop where exhaust gases like carbon monoxide co and no x from vehicles are very dangerous proper ventilation is very important. The imc and ashrae stipulate that garage ventilation systems run continuously during building occupied hours with an exception made for those that deploy carbon monoxide co sensor based demand controlled ventilation dcv systems. The california mechanical code cmc 1for instance includes this requirement. The ventilation system for the phase 1 garage consists of an exhaust fan that operates at a constant volume 24 7.

Public garages mechanical ventilation systems for public garages are not required to operate continuously where the system is arranged to operate automatically upon detection of a concentration of carbon monoxide of 25 ppm by approved detection devices. For the first time ever nitrogen dioxide in addition to carbon monoxide detection is called out specifically as a proper means to operate parking garage ventilation systems automatically. It helps maintain good air quality when garage traffic is high and conserve energy when it is low. American ventilation control systems avcs offers costar 24vc e ventilation control solution that monitors unsafe levels of co in your parking garage to protect the health and well being of your building s occupants.

The combination of this thrust ventilation principle with mechanical exhaust and natural and or mechanical fresh air supply results in an optimal ventilation system for enclosed car parks. The jetvent control system is an easily customized solution designed to efficiently manage the garage ventilation equipment. This fan is set to run 24 7 but the speed varies based on the level of co. It is common to see enclosed and underground parking garage exhaust systems consisting of extensive duct distribution systems with multiple exhaust inlets often ducted to near the floor.

In car parking facilities jet fans can be used to replace ducts for the extraction of both co and eventually explosive liquid petrol gas fumes. Uniform building code section 705 in all parking garages automatic co sensing.