
VDW SERIES
Ceiling swirl diffusers in round and square shapes for high air flow rates
Standard sizes 300, 400, 500, 600, 625, 825
Air flow range 7 – 470 l/s or 25 – 1692 m³/h
Front panel made of galvanized sheet steel with powder coating
For supply and extract air
For systems with variable and constant air flow
Suitable for all types of ceilings, also suitable for free hanging when fitted with an edge panel
Rapid equalization of temperatures and reduction of air flow speed is achieved due to the high level of ejection
Diffusers can provide 35-fold air exchange when arranged in a row with a minimum pitch of 0.9 m (from center to center)
Ideal for comfort zones
Additional equipment and accessories
Diffuser front panel can be painted in RAL CLASSIC colors, guide vanes in white or black
Horizontal or vertical duct connection
Plenum box with measuring point and valve flap with flexible rod
Description
Ceiling swirl diffusers in air conditioning systems create a vortex supply of air for good mixing with the room air. 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 swirl diffusers are used for high air flows. As a result, there is a mixing of air flows in comfort zones, with a good distribution of air jets throughout the room and a small turbulent vortex in the area where people are present.
The position of the guide vanes of the VDW series ceiling swirl diffusers can be adjusted. The direction of air flow can be changed if necessary. Horizontal air supply in one direction, in two or all directions. Vertical air supply is only possible for heating. The temperature difference between the supply air and the room can range from –12 to +10 K.
Flap blade (optional) to balance air flow simplifies operation. The metering point and damper blade with flexible rod (optional) allow you to adjust the air flow when the front panel is installed.
To create an attractive, holistic room design, diffusers from the VDW series can also be used for exhaust ventilation. For exhaust systems, guide vanes are not required.
Standard sizes 300, 400, 500, 600, 625, 825 mm
Min. air flow, where ΔtZ = -6 K 7 – 99 l/s or 25 – 357 m³/h
Max. air flow level, at LWA ≅ 50 dB(A) 80 – 470 l/s or 288 – 1692 m³/h
Temperature difference between supply air and room –12 to +10K
Characteristics
The position of the guide vanes can be adjusted individually to change the direction of the air flow
Suitable for all types of ceilings, also suitable for free hanging when fitted with an edge panel
Guide vanes black or white
Diffusers can provide 35-fold air exchange when arranged in a row with a minimum pitch of 0.9 m (from center to center)
Materials and coating
Front panel made of galvanized sheet steel
V, H: Plenum box and bridge made of galvanized sheet steel
X: Plenum box made of plastic and galvanized sheet steel
Guide vanes are made of plastic, UL 94, fire resistance class V-0
The seal is made of rubber
The front panel is powder coated RAL9010, white
P1: Powder coated, RAL CLASSIC color
Supply air guide vanes conform to RAL 9005, black; for exhaust systems – without guide vanes
Q11: Exhaust air guide vanes according to RAL 9005, black
Q21: Supply and extract air guide vanes conform to RAL 9010, white
Specifications
Standard sizes: 300, 400, 500, 600, 625, 825 mm
Min. air flow level, where ΔtZ = -6 K: 7 – 99 l/s or 25 – 357 m³/h
Max. air flow level, where LWA ≅ 50 dB(A): 80 – 470 l/s or 288 – 1692 m³/h
Temperature difference between supply air and room: –12 to +10 K

A VDW-Q
B VDW-R
① Diffuser front panel
② Center connection screw
③Adjustable guide vanes
④ Static chamber
⑤ Jumper
⑥ Hanging bracket
⑦ Connection
Optional
⑧ Seal
⑨ Flap valve for balancing air flow
⑩ Measuring point
⑪ Green cable for closing the damper blade
⑫ White cable for opening the damper blade
⑬ Measuring tube
⑭ Plenum box type label
