Air Handling Units - Airbox F40

Casing design

Units in the F40 series have a frameless construction. The Airbox F40 is a low-cost alternative to the S40 series, with small sizes up to a unit size of 13Q (outside dimension 1340 x 1340 mm). All panels in the F40 series are double-skinned, with an inside sheet, outside sheet and insulation in between. The insulation thickness of the side and top panels is 40 mm. The bottom panel of flat units with operation from underneath is also fitted with 40 mm thick insulation. In all other variants, the insulation thickness of the bottom panel is 60 mm. The inner sides of the device are completely smooth. In the standard variant, galvanised steel sheet with a thickness of 1.0 mm, is used for the panels. Alternatively, at additional cost, it is possible to select sheets in galvanised steel with plastic coating, stainless steel V2A (1.4301) or aluminium AlMg3 separately for the outside and inside. The standard colour of the plastic coating is light grey RAL 7035. Other RAL colours are also possible. The rock wool, used as thermal and acoustic insulation, is non-flammable and is partly glued onto the double-skin panel. The F40 units are Eurovent certified and suitable for meeting the hygiene regulations of VDI 6022.

Base frame

F40 air handling units can be fitted with a folded base frame with heights from 100 mm to 500 mm, made from 3 mm thick galvanised steel sheet.

Air volume

Minimal (V=1 m/s):

800 - 5,600 m³/h

Optimal (V=2 m/s):

1,600 - 11,200 m³/h

Maximal (V=4 m/s):

3,200 - 22,400 m³/h

Thermal properties

Heat transfer [W/m²K]:

1,0 (T2)

Thermal bridging factor k_b:

0,5 (TB3)

Panel connection

The panels of the F40 series are designed to be offset in relation to one another at their connection points. They are screwed on from the outside at opposite sides in each case along the outside edges, meaning that a highly stable connection is achieved. The screws are located completely within the panel in order to provide the best possible thermal and visual properties. The openings in the outside sheet required for the screw connection on the inside are tightly sealed with UV-resistant plastic caps.

Module connection

Gusset plates are mounted on the casing corners at the factory in order to connect the modules. The supplied tapped screws tighten the modules to the opposite gusset plates. The U-profiles, which are also supplied, produce a completely smooth module joint. The screw connections of the module joint are covered with plastic caps in order to achieve a high hygiene quality.

Eurovent energy efficiency label

Specifically for the F40 series, the unit data sheet from our Eurovent-certified selection programm additionally specifies the Eurovent energy efficiency category and we put this label on the unit. Similar to the way in which energy efficiency indications have been introduced for other areas in the EU, the Eurovent energy efficiency label divides air handling units into categories A to E. In this case, a general consideration is given to characteristic values for air velocities, external pressure losses, configuration outdoor temperature, pressure losses from the heat recovery, efficiency of the heat recovery and electric power consumption of the fans, in comparison to a single benchmark, and the unit is then assigned to the appropriate energy efficiency category. For more information, refer to the official Eurovent website at www.eurovent-certification.com.

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