05/14 - 2 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB Description The characteristic feature of the ceiling air diffuser type DBB for supply and return air is its high flexibility. The integrated blades allow many air distribution patterns even later on. It is often the case that unforeseen installations of components into the ceiling make it necessary to change the air throw pattern on site. Some of the many available air throw options are shown below. Attention: As standard, the ceiling air diffuser type DBB-...-A-... in return air model is delivered with blades. Only for large air volumes will the DBB return air model...

Ceiling air diffuser DBB Fastening Screw mounting (-SM) - Standard, screws must be provided on site Concealed mounting (-VM, standard for faceplate made of aluminium) - Only available in combination with a plenum box (box can also be provided on site) Air throw pattern Model "B" Construction subject to change.

bined lengths and heights available! Grilles cannot be fitted with a hit-and-miss damper if a plenum box is attached, i.e., it can either be fitted with a hit-and-miss damper or a plenum box. Construction subject to change. With the model DBB-A-... from L>825 with intermediate rail.

Ceiling air diffuser DBBBand design DBB without plenum box 2-part if length of band BL < 2025 mm 38 W' * With the model DBB-A-... from L>825 with intermediate rail. 1.) The end pieces can be manufactured with length from 506,5 to 1012 mm.

Ceiling air diffuser DBB Dimensions of accessories If KBS is <øD+30 an offset box will be manufactured. KB2= øD (-S0)+30 For DBB-...-A, plenum box is painted inside to RAL 9005 (black) For DBB-...-Z With spigot front side (-S4) - Lateral spigot (-S1, standard) - Spigot from above (-S0) - Spigot front side (-S4) Spigot diameters for spigot from above (-S0) deviate from the standard plenum box (AK-...-S1 and AK-…-S4). With lateral spigot (-S1) If KBS is <øD+30 an offset box will be manufactured. KB2= øD (-S4)+30 With spigot from above (-S0) 05/14 - 7 Construction subject to change. Version: 02.07.2020...

S4-1 (only possible with 1 spigot) Grilles cannot be fitted with a hit-and-miss damper if a plenum box is attached, i.e., it can either be fitted with a hit-and-miss damper or a plenum box. * With the model DBB-A-... from L>825 with intermediate rail. See page 9 for detail Y. Minimum height KHS with spigot position -S1 / -S4: spigot diameter + 87 mm Minimum width KBS and KB2 with spigot position -S0 / -S4: Spigot diameter + 30 mm Construction subject to change.

Rubber lip seal (-GD1) Detail Y Damper -DK1 (standard for -S1) ROB version (-ROB) Removable diffuser plate, damper and volumetric flow meter. Insulation for plenum box (AK) internal (-Ii) external (-Ia) Available sizes Construction subject to change.

Ceiling air diffuser DBB Fastening methods Screw mounting (SM) (model "DBB-C-..." shown) with 4 and, from a length of ≥ 625, with 6 raised countersunk head tapping screws (on site) Concealed mounting (VM) (model "DBB-A-..." shown) Indentation for slotted shallow-raised countersunk-head tapping screw DIN ISO 7051 pitch 3.9 (on site) Section A-A (Drawn rotated by 90°) only available together with a plenum box Box can also be provided on site! Detail W Hole for the damper adjustment (only available for the version with damper) 05/14 - 10 Construction subject to change. Version: 02.07.2020 No return...

Ceiling air diffuser DBB Technical data Pressure loss and noise level DBB-A-..., H=115mm (damper OPEN) DBB-A-..., H=215mm (damper OPEN) DBB-A-..., H=315mm (damper OPEN) DBB-B-..., H=215mm (damper OPEN) DBB-B-..., H=315mm (damper OPEN) DBB-C-..., H=215mm (damper OPEN) 05/14 - 11 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB DBB-C-..., H=315mm (damper OPEN) the following applies to damper "CLOSED": Δpt = diagram value x 2 LWA = diagram value + 5 dB(A) Maximum end velocity of jet DBB-A-..., with coanda effect, one- or two-way throw without coanda effect: diagram value x 0,7 05/14 - 12 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB DBB-B-..., with coanda effect, two- or three-way throw Air flow direction sideways Main air flow direction without coanda effect: diagram value x 0,7 VS VM 05/14 - 13 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB DBB-C-..., with coanda effect, three- or four-way throw Air flow direction sideways Main air flow direction without coanda effect: diagram value x 0,7 VS VM 05/14 - 14 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB Jet path DBB-A-..., without coanda effect, one- or two-way throw 1.) Heating mode 2.) Cooling mode 05/14 - 15 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB DBB-B-..., without coanda effect, two- or three-way throw 1.) Heating mode 2.) Cooling mode 05/14 - 16 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB DBB-C-..., without coanda effect, three- or four-way throw 1.) Heating mode 2.) Cooling mode 05/14 - 17 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB Critical jet path DBB-A-..., with coanda effect, one- or two-way throw DBB-B-..., with coanda effect, two- or three-way throw 05/14 - 18 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB DBB-C-..., with coanda effect, three- or four-way throw Induction ratios DBB-A-..., with coanda effect, one- or two-way throw without coanda effect: diagram value x 1,4 05/14 - 19 Construction subject to change. Version: 02.07.2020 No return possible!

Ceiling air diffuser DBB DBB-B-..., with coanda effect, two- or three-way throw without coanda effect: diagram value x 1,4 DBB-C-..., with coanda effect, three- or four-way throw without coanda effect: diagram value x 1,4 05/14 - 20 Construction subject to change. Version: 02.07.2020 No return possible!