Ceiling diffusers direct air from the air conditioning system into the room. The air flow obtained at the outlet of the diffuser allows one to achieve high ejection values, thereby quickly reducing the flow rate and leveling out the temperature difference between the supply air and the air in the room. Ceiling diffusers can be used for high air flow rates. The result is a mixing of air flows in comfort zones and industrial areas, with a good distribution of air currents throughout the room and a small turbulent vortex in the area where people are present.

Ceiling diffusers of the VDR series have adjustable guide vanes. The direction of air flow can be changed if necessary. Horizontal air supply is carried out in all directions. Vertical air supply is possible in heating mode. The temperature difference between the supply air and the room can range from –10 to +15 K.

The drive (optional) adjusts the position of the blades if necessary.

Characteristics

Large air penetration depth at low sound power levels
Particularly suitable for rooms with variable thermal load
Optimal adjustment of air flow thanks to two sections of adjustable guide vanes
The direction of air supply is changed manually or using a drive
Plenum box with side or top connection, and option with electric drive and inspection hatch

Materials and coating

Guide vanes, outer panel and pipe ring are made of aluminum
Plenum box and lintel made of galvanized sheet steel
External panel, guide vanes and pipe ring powder coated RAL 9010, pure white
P1: Powder coated, RAL CLASSIC color

Specifications

Standard sizes: 315, 400, 630, 800 mm
Min. air flow level: 175 – 695 l/s or 630 – 2502 m³/h
Max. air flow level, where LWA ≅ 50 dB(A): 320 – 1495 l/s or 1152 – 5382 m³/h
Temperature difference between supply air and room: –10 to +15 K