AKR
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Product data sheet Plenum boxes AKR Circular plenum box with equalising element, for supply air Circular plenum box without equalising element, for extract air Circular plenum box for universal connection of swirl diffusers type VDW, FD, TDF, AIRNAMIC and XARTO Standard plenum box for supply air and extract air for circular diffuser faces and for the XARTO type ■ Plenum box made of galvanised sheet steel with plastic spigot and equalising element made of polyester fleece ■ Mounting aid for faster and tool-free assembly of the diffuser face ■ 3 suspension lugs for fixing, alternatively a central single-point suspension can be used ■ For all types of ceiling systems ■ Equalising element for optimum and therefore quieter flow through the diffuser face with supply air ■ For comfort zones and industrial zones ■ Very airtight casing Optional equipment and accessories ■ Spigot with damper unit for volume flow rate balancing and lip seal ■ Internal lining ■ Powder coating, RAL CLASSIC colour

Product data sheet General information Function Quick sizing Specification text Order code Dimensions and weight Product details Nomenclature General information Application ▪ Plenum boxes for connecting type VDW, FD, TDF, AIRNAMIC and XARTO air terminal devices ▪ Standard plenum box for circular diffuser faces and type XARTO ▪ No tools required to assemble the central fixing screw ▪ For supply and extract air in comfort and industrial zones ▪ For connection to circular ducts according to EN 1506 or EN 13180 ▪ For variable and constant volume flows ▪ For all types of ceiling systems Special...

Product data sheet Function Plenum boxes are used to connect air terminal devices to circular ducts and to fix the diffuser face. Type AKR plenum boxes are fitted with an equalising element (for supply air) that ensures an even airflow through the diffuser face. Depending on the diffuser face, lower sound power levels are achieved due to the improved airflow. The spigot with optionally available damper unit and lip seal simplifies the volume flow rate balancing for commissioning. Schematic illustration of VDW-R with circular plenum box and side entry spigot ① Diffuser face ② Central fixing...

Product data sheet Quick sizing Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures. The minimum volume flow rates apply to a supply air to room air temperature difference of -6 K. The maximum volume flow rates apply to a sound power level of approx. 50 dB (A) with damper blade position 0°. Exact values for all parameters can be determined with our Easy Product Finder design program.

Product data sheet Specification text This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design program. Type AKR circular plenum boxes for the connection of diffuser faces to circular ducts, suitable for supply air or extract air applications. Supply air plenum boxes are fitted with an equalising element that ensures an even airflow through the diffuser face. The ready-to-install component consisting of the plenum box, the horizontally arranged spigot, with equalising element for supply air, cross bar...

Product data sheet Order code AKR – Z – H – DS – D / 1 / P1 | | | | | | | 1 2 3 4 5 6 7 1 Type AKR Circular plenum box 2 System Z Supply air A Extract air 3 Spigot H Spigot horizontal 4 Damper blade and lip seal No entry required: None DS With damper unit and lip seal 5 Internal lining (insulation) No entry required: None D With internal lining 6 Box type 01 02 03 04 05 7 Surface No entry required: Raw, galvanised steel P1 Powder-coated, specify RAL CLASSIC colour Order example: AKR-Z-H-DS-.../05/... Air conditioning system Connector Damper blade and lip seal Lining (insulation) Box type...

Product data sheet

Product data sheet Product details Volume flow rate balancing/commissioning When several diffusers are connected to just one volume flow controller, it may be necessary to balance the volume flow rates. ▪ Circular plenum boxes with damper unit and lip seal (-DS) have a damper unit that can be adjusted in 15° steps ▪ Adjustment is via a manual lever which is freely accessible when the diffuser face is removed ▪ Adjustment range is 0° - 90° in 15° steps

Product data sheet Nomenclature R [mm] Position of the spigot, defined by the distance of the spigot centre line to the lower edge of the suspended ceiling ØD [mm] Outer diameter of the spigot ØD1 Outer diameter of a circular plenum box H [mm] Height of plenum box m [kg] Weight qv [m³/h]; [l/s] Volume flow rate Lengths Lengths are given in [mm] unless stated otherwise.