What is a sequence of operations?
By Bassirou Thiam, building automation engineer · Updated
A sequence of operations (SOO) is the written description of how a building system is controlled: its modes, start and stop conditions, setpoints and control loops, alarms and safeties. It is part of the BAS submittal and should refer to the exact point names of the points list.
Standard sequences
ASHRAE Guideline 36 publishes standardized high-performance sequences for common systems such as multiple-zone VAV air handlers. When it is specified, the contractor implements it rather than writing a sequence from scratch.
How to write one: how to write a sequence of operations.
Sources
Related
GuidesHow to write a sequence of operationsWhat a sequence of operations covers, how to structure it by mode, how it ties to the points list, and where ASHRAE Guideline 36 fits.
GlossaryWhat is a BAS points list?Definition of a BAS points list (I/O list, points schedule): every input and output per controller, with point type, field device and location.
GlossaryWhat is a BAS submittal?Definition of a BAS controls submittal: the package of drawings, points lists, sequences and product data sent for approval before installation.