Blower / centrifugal fan P&ID symbol

Blower / centrifugal fan

ISO 10628-2 (groups 16, 17 and 20, compressors, blowers, engines) / PIP PIC001 (group 17)
Drawn as
A circle (the scroll) with the outlet leaving tangentially as a short rectangular duct, and curved blades (or a small fan wheel) drawn inside.
Meaning
Centrifugal fan or blower: HVAC supply and extract, combustion air, purge air. Becomes centrifugal-fan.
Variants
  • Axial and propeller fans are drawn differently: see fan-axial
  • Positive displacement (roots) blowers are drawn as a circle with two lobes
Tags
K · B · F · FN