Written by HVAC Professionals for HVAC Professionals

Matrix Strap for Evergreen’s K-Tab Kit

For decades the balancing industry has been responsible for meticulous measurements and tests. Techs accomplish this by completing contracted Testing, Adjusting and Balancing (TAB) projects. Over the years there have been huge advancements in the test instruments and accessories we use.

This month I’m highlighting a simple accessory with huge potential benefits for TAB professionals. The Velocity Grid/Velocity Matrix Strap Assembly is part of the Evergreen Telemetry K-TAB Kit. You can obtain it in several configurations to fit your needs.

You use the Matrix Strap most often while measuring economizer and ventilation airflow. Techs use it during the process of testing, setting, verifying and certifying ventilation requirements.

Once you assemble the Matrix itself, you then affix the strap to the unit after measuring the open area in square feet.

Once the Matrix is securely in position, monitor the system with Evergreen’s Wrist Recorder. Make adjustments to the damper position until the displayed velocity is at the target velocity.

This method greatly reduces the number of repeated measurements required with other instruments and procedures. I use this K-Tab kit with the Matrix Strap to greatly streamline my outside air and ventilation TAB projects. You can too.

It makes the job easier, more accurate, and is quite handy. Along with the Wrist Recorder, you are all set to help commercial customers by providing proof their systems are balanced properly.

For more information on the K-Tab Kit and the Matrix Strap, go to ncilink.com/EvergreenKTab.

— by Jeff Sturgeon, National Comfort Institute Southern California Training Center Manager/ Instructor