Fan Coil Unit for Low Static Pressure-RAC

PETRA’s fan coil units (RAC Series) are designed for applications with low static pressure. The units are particularly suitable for concealed or exposed ceiling or floor applications with ducted air distribution.

This series covers an airflow range from 94 to 566 L/s (200 to 1200 CFM). The standard unit is comprised of a coil suitable for both chilled and hot water, a fan section with a direct drive centrifugal fan, and a flat filter. Low water flow rate units are available with 9.8⁰C (16⁰F) temperature difference between inlet & outlet water.

Standard Features

-Coils are constructed of copper tubes, 9.5 mm (3/8 inch) in diameter, mechanically expanded into aluminum fins.

-All coils are tested for leakage at 3,100 kPa (450 Psi) air pressure and are suitable for up to 2,410 kPa (350 Psi) working pressure (with manual air vent, piped to the drain pan).

-Forward curved centrifugal fans of the double inlet type designed for maximum efficiency and uniform air distribution.

-Fans are statically and dynamically balanced to ensure quiet operation and optimal performance.

-Fans are direct drive type with 3-speed and driven by permanent split capacitor electric motors (with internal thermal protection).

-A 25 mm (1 inch) nominal thickness, 22.2 mm (7/8 inch) thick actual frame size with 15.8 mm (5/8 inch) thick aluminum media flat filter for CBP & GCC, 12.7 mm (1/2 inch) for GFC & FB, and a washable filter for PFC & PCC.

-Single sloped galvanized steel drain pan, insulated on its underside to prevent condensation.

-All units are constructed of heavy gauge galvanized steel without paint.

-All units are internally lined with 12.5 mm (0.5 inches) fiberglass insulation for the coil and fan section.