A healthy place of business starts with controlling your indoor CO2 levels. Honeywell C7232 Carbon Dioxide (C02) sensor models provide exceptional long term monitoring and control of space ventilation. Carbon dioxide (CO2) is a colorless, odorless gas. It’s produced both naturally in the environment and through human activities–people exhale CO2 which contributes to the levels in the air.
The level of CO2 indoors depends upon:
- The number of people present
- How long an area has been occupied
- The amount of outdoor fresh air entering the area
- The size of the room or area
- Whether combustion by-products are contaminating the indoor air (e.g., idling vehicles near air intakes, leaky furnaces, tobacco smoke)
- The outdoor concentration
Occupants may experience negative health effects in buildings where CO2 levels are high. At high levels, carbon dioxide can cause headache, dizziness, nausea, and other symptoms. This could occur when exposed to levels above 5,000 ppm for many hours. The American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) has developed ventilation guidelines that should maintain a comfortable environment for most occupants. The amount of fresh air that should be supplied to a room depends on the type of facility and room. For example, in elementary school classrooms, ASHRAE recommends 15 cubic feet per minute per person of outdoor air (for a 1000 square foot room occupied by 50 people). In office spaces, ASHRAE recommends 20 cubic feet per minute per person (for a 1000 square foot occupied by 7 people).
Installation of Sensors
- Sensors can be installed either on the wall or in the A/C return air ductwork
- The Honeywell C7232 provides voltage or current output based on CO2 levels
- Sensors are connected to a damper in the A/C system’s existing ventilation system
- Controller typically signals an increase in fresh air into the space
To learn more about CO2 sensors, contact the ConServ location nearest you.
ConServ Building Services, LLC provides excellent commercial HVAC, refrigeration, plumbing, and general construction services to businesses across the Southeastern United States. To learn more about ConServ, visit www.conservonline.com.