Displacement ventilation diffusers force air from the air conditioning system into the room vertically and at low speed, causing very low turbulence. The result is very good air quality in the work area.

The QSH series displacement ventilation diffusers are mainly used in industrial areas where processes that emit pollutants are carried out. They are installed outside the work area, for example, at high altitudes in corridors. The dial allows you to change the direction of air supply for heating or cooling mode. The temperature difference between the supply air and the room can range from –8 to +12 K.

Cooling mode

In cooling mode, supply air is supplied outside the working area, from above and in a bell-shaped manner. This creates a cloud of fresh air above the floor, similar to displacement ventilation where air is introduced low near the floor. Convection from people and other heat sources causes a cloud of fresh air to rise upward, thereby creating comfortable conditions in the work area.

Heating mode

In heating mode, the air is distributed vertically. The dial can be adjusted manually or using a thermal or electric drive. Exhaust devices should be installed in the upper part of the room, above the work area.

Standard sizes 250, 355, 450, 560 mm

Min. air flow level 205 – 785 l/s or 738 – 2826 m³/h

Max. air flow level, at LWA ≅ 55 dB(A) 410 – 1570 l/s or 1476 – 5652 m³/h

Temperature difference between supply air and room –8 to +12K

Displacement ventilation diffusers with a cylindrical body, for industrial areas where technological processes that release pollutants are carried out. With a dial control to change the air supply direction from bell-shaped to vertical (90°). For free hanging, as well as for installation on walls or columns, preferably outside the work area, for example in corridors.

The device is completely ready for installation and consists of a perforated cylindrical body, a disk regulator and a pipe for the top connection.

Pipe for connection to air ducts in accordance with EN 1506 or EN 13180.

The sound power level of the generated noise is measured in accordance with the EN ISO 5135 standard.

Characteristics

Bell-shaped low turbulence air supply in cooling mode
The direction of air supply is adjusted manually or using an electric or thermal drive

Materials and coating

Housing with mounting plate, bridge and dial made of galvanized sheet steel
The tension chain is made of galvanized steel
Pulleys are made of plastic, UL 94, V-0, fire resistant
B: Lever is made of galvanized steel, Bowden cable is made of galvanized steel with PE sheath
P0: Powder coated RAL 9010, pure white
P1: Powder coated, RAL CLASSIC color

Specifications

Standard sizes: 250, 355, 450, 560 mm
Min. air flow level: 205 – 785 l/s or 738 – 2826 m³/h
Max. air flow level, where LWA ≅ 55 dB(A): 410 – 1570 l/s or 1476 – 5652 m³/h
Temperature difference between supply air and room: –8 to +12 K