Configurable VAV Direct Digital Controls (DDC)

Commercial heating and cooling zone controllers for superior indoor comfort

Stay in control of the temperature in your commercial space with a reliable DDC system—and keep your building occupants comfortable at all times.

  • Factory-configured ZEC500 and ZEC510 DDC controllers for Standalone or BACnet operation
  • Factory set parameters for quick installation and operation
  • Field-adjustable with MAP Gateway Tool (sold separately)
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Product Overview

Need to keep your commercial space at a consistently comfortable temperature? Configurable VAV direct digital controls (DDC) are easily mounted within a variable air volume (VAV) terminal unit control enclosure to enable standalone or BACnet communication for each VAV unit. The ideal choice for your commercial space, our wide array of pre-programmed DDC VAV controllers provide superior zone comfort by minimizing deviation from your room temperature set points. These controllers allow for a multitude of configurations such as night setback and morning warm-up operation.
Product Overview



ENVIRO-TEC VAV DDC controls maximize building air quality, comfort, and airflow with improved spacing and design flexibility.


Manage air volume efficiently with DDC controls that offer a range of configurations and heating control options.


Our DDC control offerings deliver long-lasting performance through quiet, precise airflow to the occupied space.

Genuine Performance
Genuine Performance

ENVIRO-TEC DDC controls offer genuine performance advantages through unique configurations, factory-installation, and a wide selection of control options.


  • DDC controllers are factory-set to allow for quick unit installation and operation.
  • Available on Single-Duct, Series Flow, and Parallel Flow VAV Terminal Units.
  • Field changes are easily performed with the use of a Mobile Access Portal (MAP) Gateway Tool (sold separately).
  • HW incremental, staged, or proportional electric heat control functionality

Technical Resources

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