AEC definitions
An equipment schedule is a table on the drawings that lists pieces of equipment, keyed by a mark, with the capacity, size, and electrical data the design requires. The plans show where the mark sits. The specification states quality. The submittal has to satisfy both the schedule and the spec.
Definition
Mechanical, plumbing, kitchen, and electrical drawings each use schedules. A mark such as AHU-1 on the plan must be AHU-1 on the schedule, with airflow, static pressure, and power. If the schedule and the spec disagree, you have a conflict to resolve before purchase. A basis-of-design column names a representative product. It is not permission to ignore the performance numbers. Contractors price and submit from the schedule. A schedule that says 'see spec' for every value is not a schedule.
In depth
Orphan marks on the plan and orphan rows on the schedule are the first coordination check. Renaming a unit in a meeting without changing both is how the wrong unit is ordered.
Quantities should be explicit when one row covers multiple identical units.
Airflow, cooling capacity, horsepower, voltage, and weight are what the structure, the electrical service, and the energy model rely on. A lighter submittal that misses capacity is not a saving.
Electrical data on a mechanical schedule must match the panel schedule's circuit. Three different horsepower numbers is a coordination miss.
If the schedule says 10,000 cfm and the spec says 8,000, the submittal will pick one. Edit them together. Put options and acceptable manufacturers where your office standard says, and do not contradict them on the other sheet.
Accessories, such as disconnects and vibration isolation, should be columns or spec sentences, not assumptions.
The cut sheet is marked to the scheduled configuration. Deviations are listed.
Approved-as-noted must say which number changed, because a changed electrical load revises the panel schedule too.
Examples
AHU-1 on the plan matches a schedule row with airflow, static pressure, and a 460 volt motor. The panel schedule feeds that motor.
The basis-of-design manufacturer is named. The submittal uses an allowed alternate that meets every scheduled number.
A kitchen schedule's gas load is coordinated with the plumbing riser.
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