Circular Ceiling Diffusers - Air Diffusion

More documents

Recommendations

Info

Circular Ceiling DiffusersModel DE Circular Ceiling DiffuserModel DEDescriptionModel DE has a versatile inner coneproviding 5 adjustment positions, wherethe air pattern can be altered fromhorizontal throw to vertical projection. Inaddition the inner cone is easily removedfor access or cleaning.To compliment the usual Model DEcircular diffuser format the assembly canbe incorporated into a square ceilingpanel, to act as a tile replacement andco-ordinate with a 600 x 600mm ceilinggrid system.Fabricated in steel as standard withaluminium available as an extra costoption. Finished in White polyesterpowder as standard. Other colours areavailable as an optional extra.Model DE100PSpecificationMaterialSteel as standard, Aluminium on specialrequest.ConstructionFabricated from pressed steel conicalsections with inner cones joined bymechanical device located in diffuserneck.Standard Installation MethodUsing rigid duct, screw fix throughdiffuser neck direct to duct with innercore removed.Installation OptionsWhen using flexible duct, diffusersupports required (by others), withdiffuser neck fixed and sealed to flexibleduct.An extension spigot required to allowclearance to ensure damper notobstructed when core in highest positionusing vertical projection.AccessoriesOptional radial opposed blade damperaccessed through diffuser face, steelconstruction, painted black to (RAL9005).FinishStandard is White polyester powder coatto RAL 9010 (20% gloss) alternativefinishes to BS or RAL colours alsoavailable as an optional extra.Standard Model TypesModel DE100 – Circular diffuser onlyModel DE103 – Circular diffuser withradial opposed blade damperModel DE100P – Circular diffuser only insquare tile replacement panelModel DE103P – Circular diffuser withradial opposed blade damper in squaretile replacement panelSize RangeModel DE100 Model DE100PSize 160 Size 160 - 594Size 200 Size 200 - 594Size 250 Size 250 - 594Size 315 Size 315 - 594Size 355Size 400Size 450Size 500Size 630Discharge PositionsVertical Air Diffusion Pattern(core in highest position)Horizontal Air Diffusion Pattern(core in lowest position)16 www.air-diffusion.co.uk
Circular Ceiling DiffusersPerformance GuideModel DESelection ProcedureMethodSelections are made by means of a straight read-off the tabulateddata.1. Determine the air volume flow rate per outlet.2. Establish required throw.See note (b) if ceiling effect is not being utilised.Opposing diffusers: maximum throw for each diffuser should beno more than 75% of half of the distance between them.ExampleSelect a diffuser to handle 0.4 3 /s with a throw of 4.1m whenmounted in a 3.3m high ceiling.From the selection table it can be seen that a 355mm neckdiameter diffuser throws 4.5m when installed in a 2.7m highceiling.Applying the factor from the Ceiling Height Correction Factorchart: 4.5 x 0.9 = 4.05m, an acceptable throw figure is obtained,with a pressure drop of 14Pa and noise of NC40.A 355mm DE diffuser therefore meets the duty required.Notes to Selection DataThe selection data is based on the following parameters:a. Terminal velocity within occupied zone of 0.35m/s wheninfluenced by ceiling effect.b. If ceiling effect is not being utilised in a particular application,throw data should be reduced by 40%. (The actual throw x 1.67enables a direct selection to be made).c. Throw data is based on diffusers being mounted in a 2.743mhigh false ceiling. For other ceiling heights the following correctionfactors should be applied to the throws:d. Isothermal conditions – however, acceptable conditions withinthe occupied zone could be expected for heating and coolingtemperature differentials up to 10k.e. Pressure drops indicated are for diffusers fitted with a damper(damper fully open).f. Sound ratings are given with fully open dampers and are basedon an average room having a floor area approximately 96m 2 .g. The NC values given in the Selection Data are based on anabsorption of 9dB re 10 -12 Watts and diffuser fitted with a damper,fully open.Ceiling Height Correction FactorsHeight – m Factors Height – m Factors2.44 1.10 3.35 0.902.74 1.00 3.66 0.853.00 0.95Horizontal SupplyAir Neck Neck Pressure SoundVolume Size Velocity Throw Drop Levelm 3 /s mm m/s m Pa NC0.04 160 2.16 1.10 4 –0.06 160 3.24 1.50 7 –0.07 160 3.78 1.90 14 360.08 160 4.32 2.20 16 40200 2.43 1.60 5 250.10 160 5.40 2.60 25 46200 3.04 2.00 8 320.125 200 3.79 2.60 13 37280 2.43 1.90 5 260.15 200 4.56 3.10 16 42250 2.92 2.60 8 320.175 200 5.32 3.40 24 46250 3.40 3.00 10 35315 2.35 2.20 5 270.20 250 3.89 3.20 13 37315 2.70 2.60 6 280.25 250 4.86 3.80 19 44315 3.37 3.20 10 35355 2.48 2.70 5 280.30 315 4.04 4.00 14 35400 2.27 3.00 5 260.35 315 4.72 4.50 19 44355 3.46 3.60 10 36400 2.65 3.20 6 310.40 315 5.39 5.00 25 47355 3.96 4.50 14 40400 3.03 3.70 8 340.45 355 4.45 4.80 17 42400 3.41 4.30 10 36450 2.69 3.80 6 270.50 355 4.95 5.40 20 46400 3.78 4.80 12 39450 2.99 3.90 8 340.60 400 4.53 5.50 18 38450 3.58 4.90 11 33500 2.68 4.50 7 340.75 450 4.49 6.50 16 45500 3.35 5.70 9 30630 2.53 4.90 6 341.00 500 4.47 7.90 17 48630 3.37 6.40 9 411.25 630 4.22 8.00 15 471.50 630 5.06 9.60 21 52www.air-diffusion.co.uk 17
Page 1 and 2: DJ 318028/08/2013Diário da Justiç
Page 3 and 4: Circular Ceiling DiffusersIntroduct
Page 5 and 6: Circular Ceiling DiffusersInstallat
Page 7 and 8: Circular Ceiling DiffusersPerforman
Page 13 and 14: Circular Ceiling DiffusersDimension
Page 15: Circular Ceiling DiffusersPerforman
Page 24 and 25: Circular Ceiling DiffusersOrdering
Page 26 and 27: Circular Ceiling DiffusersProduct R
Page 28: Circular Ceiling DiffuserRuskin Air

Circular Ceiling Diffusers - Air Diffusion

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?