Introduction
The DF-47-TR is a long-throw, rectangular diffuser designed for HVAC systems. It features an internal mechanism that adjusts the diffuser core position based on the supply air temperature, eliminating the need for manual or electric servomotor adjustments.

Specifications
- The diffuser core moves downward when hot air (>=30ºC) is supplied and upward with cold air, with angles adjustable during installation.
- Equipped with deflecting vanes for horizontal air distribution or focused airflow.
- Suitable for installations requiring long throws and heights between 3.5 and 7 meters.
- Can be adapted to circular ducts (DF-47-CC-TR) and may include a regulation damper (29-O-47).

Performance
The diffuser prevents hot air stratification and controls residual velocities in occupied areas when supplying cold air.

Sound Power and Airflow
The document provides a table with sound power levels and airflow rates for different models:
- DF-47-23-TR: Ranges from 500 m3/h at 30 dB(A) to 950 m3/h at 50 dB(A).
- DF-47-26-TR: Ranges from 880 m3/h at 30 dB(A) to 1,680 m3/h at 50 dB(A).
- DF-47-36-TR: Ranges from 1,320 m3/h at 30 dB(A) to 2,500 m3/h at 50 dB(A).
- DF-47-312-TR: Ranges from 2,350 m3/h at 30 dB(A) to 4,470 m3/h at 50 dB(A).

Contact Information
Koolair, S.A., Polígono Industrial 2, La Fuensanta, 28936 Móstoles (Madrid), Spain. Tel.: +34 91 645 00 33, Fax: +34 91 645 69 62, Email: [email protected], Website: www.koolair.com