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References: Advanced Arrangements and Configuration Variants

  1. Centrifugal fan - Wikipedia - Overview of centrifugal fan construction, drive methods and blade types. It gives the general context for the housed, plug and plenum arrangement variants decoded in this chapter.

  2. Air handler - Wikipedia - Describes air handling units and the blowers inside them. It helps explain why plug and plenum fan arrangements focus on where the motor fits inside a cabinet.

  3. Belt (mechanical) - Wikipedia - Explains V-belt drives, tensioning and center distance. It is background for the slide bases, adjustable motor bases and belt center limits that separate 3HS from 3HA and 9ST from 9SS.

  4. Fan Handbook: Selection, Application, and Design - Frank P. Bleier - McGraw-Hill (1998) - Bleier presents fan arrangements and drives as application choices, weighing motor location, access and support. That is the same reasoning this chapter uses to pick among variants.

  5. Fan Engineering: An Engineer's Handbook on Fans and Their Applications (9th edition) - Robert Jorgensen (editor) - Buffalo Forge Company (later Howden Buffalo) - A long-standing industry handbook. Its treatment of standard drive arrangements, rotation and motor positions is the foundation the FanPedia variant codes build on.

  6. FanPedia: The Fan & Blower Encyclopedia (PDF) - Twin City Fan - The source for every variant here. See the arrangement drawings (pp. 20-28), motor position pages (pp. 52-57), swingout and clamshell (p. 123) and technical descriptions (pp. 163-175).

  7. FanPedia online - Twin City Fan - The web edition of FanPedia, with the same arrangement and motor position topics in browsable form. Use it with the current catalogs, which take priority when they differ from FanPedia.

  8. Fan Arrangements, Rotation, Discharge and Motor Position (FE-3900) - Twin City Fan Fan Engineering Letter - Reproduces AMCA drive arrangements, including Arrangements 8, 9F and 10, with rotation, discharge and the W, X, Y, Z motor positions. It is a compact companion to this chapter.

  9. Utility Sets Catalog 600 - Twin City Fan - The current catalog FanPedia points to for ventilating sets. It lists Twin City Fan's utility ventilating set models with their classes, sizes and construction details.

  10. Plenum Fan Application Guidelines (FE-3500) - Twin City Fan Fan Engineering Letter - Application guidance for plenum fans, including cabinet entrance losses and motor mounting on Arrangements 3HS, 3HA, 3SM, 3VS and 3VA. It extends this chapter's plenum variants section.