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RAC

Fan Coil Unit for Low Static Pressure.

 

Fan Coil Unit for Low Static Pressure

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 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.

  • Low sound level units, NC as low as NC 30.
  • Low height and footprint units.
  • Coil can be on the left or right without affecting coil performance (Except PFC & PCC coil that can only be on the right).
  • Coil is supplied with 2-air vents piped to the drain pan.
  • Heavy gauge sheet metal casing with G90 – galvanized steel.
  • Flexibility in shaped flow resistance.
  • 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 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 that 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 inch) fiberglass insulation for the coil and fan section.
  • Double skin constructed with 25 mm (1 inch) fiber glass isolation, the inner skin shall be solid or perforated (for CBP models only).
  • Stainless steel drain pan.
  • Auxiliary drain pan under 3-way valves.
  • Synthetic media filter.
  • Shut-off valve (loose item or built in the unit).
  • 4-pipe system units have a double coil (3-rows cooling + 1-row heating).
  • 3-way valve (loose item or built in the unit).
  • Built-in finned tube electric heaters with automatic thermal safety.
  • Manual Room Thermostat includes a three-speed switch (wall mounted, loose item).
  • Digital Room Thermostat (wall mounted, loose item).
  • Three-Speed Switch (wall mounted, loose item).

CBP – Ceiling Basic with Plenum (Galvanized Steel)
Designed for concealed ceiling installation above false ceiling with ducted supply and return air distribution. The plenum encloses the fan section of the basic unit. Units of this type consist of a coil, fan and a flat filter

CB – Ceiling Basic Model (Galvanized Steel)
Designed for concealed ceiling installation above false ceiling with ducted supply air distribution and free return of air above false ceiling. Units of this type consist of a coil and fan without a return plenum or filter

GFC – Floor Cabinet Model (Galvanized Steel)
Designed for floor mounted exposed applications, the unit has a decorative painted galvanized steel cabinet that encloses all the unit’s components. Units of this type consist of a fan, coil and flat filter, and is supplied with fixed (steel panel) lancing grill for the supply air

FB – Floor Basic Model (Galvanized Steel)
Units have the same specifications as GFC but without a cabinet. Units are provided with galvanized steel plenum without paint. Units of this type consist of a fan, coil and filter and are used for concealed floor applications

GCC – Ceiling Cabinet Model (Galvanized Steel)
Units have the same specifications as GFC model, but are used for ceiling suspended exposed applications

PFC – Floor Cabinet Model (Deluxe)
Designed for floor mounted exposed applications; the unit has a decorative painted plastic and galvanized steel cabinet. Units of this type consist of a fan. Coil and flat filter, and is supplied with double deflection grills (manually operated) for the supply air and fixed deflection plastic grills for the return air

PCC – Ceiling Cabinet Model (Deluxe)
Units have the same specification as PFC, Plastic cover model, but are used for ceiling suspended exposed applications

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