Direct-drive fans require no belt maintenance. Hinged doors with zinc cast lockable handles provide easy service access to the fan, coil, filters, condenser, compressor, and controls. Labeled electrical components and color-coded wiring match the unit-specific color-coded wiring diagram, which is permanently affixed inside the control compartment. Direct-drive, ECM-driven, backward-curved plenum fans provide precise airflow control and reduced sound levels. Double-wall rigid polyurethane foam-injected panel construction provides increased sound dampening. Compressor compartment includes sound-attenuating perforated liner.

Source: ACHR News (a part of news report)

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