Swegon Indoor Climate Systems 2004 - Air distribution products - Rev. 4 June, 2007
www.swegon.comDCCb
Displacement unit for small air flows
FUNCTION
DCC is a circular displacement unit designed for small air flows, the air being supplied to the room at low velocity. It is suitable for rooms where many small units can be placed for the best possible distribution of supply air, for example in assembly halls, theatres, cinemas, lecture halls etc. Install the displacement unit under a seat in the vertical step or in the horizontal plane of the floor.
QUICK FACTS
- Fixed radial spread pattern
- Pressure-raising insert
- Simple installation
- Cleanable
- Available in a large number of special versions for optimum adaptation to the room
- Available in alternative colours
- Included in the MagiCAD and CadVent databases
DESIGN
DCC is a complete, circular displacement unit. The lower section has a connection spigot with a rubber seal. The perforated outer casing can be removed from the lower section by unscrewing it from the bayonet mounting. Available in two versions, with or without the presure-raising insert. The pressure-boosting insert provides better control over the system and more uniform air distribution if several air diffusers are used.
MATERIALS AND SURFACE TREATMENT
The whole unit is made from galvanised sheet steel and painted in the colour selected when the order is placed. The standard version is painted in jet black, RAL 9005. The unit is also available in other standard colours: Dusty grey 7037, white aluminium RAL 9006, grey aluminium RAL 9007, pure white RAL 9010 and signal white RAL 9003 (NCS 0500).
SPECIAL VERSIONS
In addition to the standard version, these displacement units are available in special dimensions, other shapes etc. Please contact your nearest sales representative for further information.
PLANNING (See Figure 2)
The unit can either be mounted vertically or horizontally.
INSTALLATION (See Figure 2)
The hole is cut as illustrated in the figure. The securing screw is first removed, after which the outer casing can be rotated and removed from the lower section. The lower section is placed in the cut hole and fastened in place to the building framework using screws.
COMMISSIONING (See Figure 2)
We recommend that the space underneath/behind the unit should function as a pressure chamber. The feed duct to each pressure chamber is then equipped with a measurement and commissioning damper.
MAINTENANCE (See Figure 2)
The displacement unit can be cleaned when necessary using luke warm water with detergent added.
ENVIRONMENT
The declaration of construction materials is available on our website.
Figure 2.Installation. Commissioning. Maintenance.
TECHNICAL DATA
- The dB(A) values are for rooms with an acoustic absorption of 4 dB. (10 m2 equivalent absorption area).
- The affected area a0.20 is measured at Dt -3° and refers to the maximum velocity irrespective of the distance from the floor.
- Dt is the difference between the room temperature at 1.2 m above the floor and the supply air temperature.
- Recommended maximum under temperature 6 °C.
- To calculate the width of the airstream, air velocities in the zone of occupation or sound levels in rooms with other dimensions, please refer to our calculation programmes ProAir web and ProAc, which are both available for download on our website.
Sound data - DCC
Sound power level Lw(dB)
Table KOK