Content Gap Batch 8

RTU Supply and Return Transition Verification

Equipment Connections: RTU, AHU, VAV, Fans & Louvers⚠️ VERIFYField workflow

Core Answer

Verify the unit opening, curb or adapter, airflow direction, access, and transition geometry before fabricating or forcing the duct connection.

Open in Field Rescue Open Category

What to Check First

Use the approved RTU and curb/adapter submittals
Confirm supply versus return openings and unit orientation
Measure actual curb and duct openings after setting when required
Keep service panels, drains, economizer parts, and lifting points clear
Confirm gasket, flex connector, insulation, and weather-seal scope

Ask Foreman

I have the unit and curb openings at [dimensions]. Can we verify supply/return orientation and the approved transition before I send this to the shop?

Text to Foreman

Do Not Do This

Do not build from a generic unit footprint or swap openings because the duct lands easier that way.

Why This Matters

A wrong transition can block airflow, access, drains, economizer operation, or weather protection.

Verify against: approved RTU/curb submittals, mechanical drawings/details, manufacturer instructions, foreman direction.