Confusing SA, RA, EA, OA, and MUA tags
Decode the system tag before installing. SA, RA, EA, OA, and MUA can send duct to different equipment, airflow directions, and rooms.
Stop if
- Can you confirm whether this run is SA, RA, EA, OA, or MUA before I install it?
Watch out
- Do not install by size alone when the system tag is unclear.
Check
- Find the abbreviation on the legend.
- Trace the run back to the equipment tag.
- Check airflow arrows and room served.
- Match the tag to the field label/shop drawing.
- Ask before tying different systems together.
Steps
- Find the abbreviation on the legend.
- Trace the run back to the equipment tag.
- Check airflow arrows and room served.
- Match the tag to the field label/shop drawing.
- Ask before tying different systems together.
Say this to your foreman
Can you confirm whether this run is SA, RA, EA, OA, or MUA before I install it?
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