How do I ensure all VAV damper blades are in the open position before system blow-down?

Coordinate with the temperature controls technician to command all digital VAV box actuator motors to drive into their 100% full open position overrides via their central software control board. If the controls aren't powered on yet, you must manually decouple the actuator shaft set-screws and rotate the damper blades by hand to full open before starting the primary fans.

["Coordinate with the temperature controls technician to command all digital VAV box actuator motors to drive into their 100% full open position overrides via their central software control board. If the controls aren't powered on yet, you must manually decouple the actuator shaft set-screws and rotate the damper blades by hand to full open before starting the primary fans."]

Stop if

• 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.

Steps

• Stop and verify the approved detail, manufacturer instructions, foreman direction, and project specs before touching it.
• Coordinate with the temperature controls technician to command all digital VAV box actuator motors to drive into their 100% full open position overrides via their central software...

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