Playing Nice: HVAC and Lighting Controls Integration

  • Lyn Gomes, PE, CCP, LEED AP, CLCATT – kW Engineering
  • Justin Lewis, PE, LEED AP – University of California, Davis

Occupancy based demand control ventilation is becoming the way to save energy in advanced buildings. In the past, carbon dioxide was used as a proxy for occupancy and driver for ventilation, but with the ubiquity of lighting controls, especially with recent code mandates, occupancy sensors are being used more and more.

But just because you can use them doesn’t mean it’s the right thing to do. This joint discussion between Gomes, a commissioning provider, and Lewis, a representative of the UC Davis Facilities Management Energy Conservation Office, includes examples of the challenges and complexities encountered and solutions based on their real-world experience implementing advanced lighting controls projects and integrating them into their HVAC control systems.

The speakers will share views on the advantages and disadvantages – including huge implications for maintenance – of different ways to implement occupancy based ventilation on your projects. They will cover:

• Four methods for implementing occupancy-based ventilation
• Things to watch out for in the control sequences
• What to remember for integration
• How to prevent a maintenance nightmare
• How choice of occupancy sensor manufacturer affects implementation

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