TinnerFlow™2nd YearVAVs & Fan CoilsYELLOW · Check First
Stand at the inlet of the VAV box looking in the direction of the airflow (looking down line). * Whichever side the control enclosure, DDC controller, and actuator motor are mounted on determines if it is a right-hand or left-hand box.
Stand at the inlet of the VAV box looking in the direction of the airflow (looking down line). * Whichever side the control enclosure, DDC controller, and actuator motor are mounted on determines if it is a right-hand or left-hand box.
Field Warning: Missing this on a layout means your control panel might end up jammed blindly against a concrete wall or structural beam, failing inspection immediately.
Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.