VAV Controllers LVC-LowVelocity - TROX

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Nomenclature · Selection of nominal size Nomenclature fm in Hz : Octave band centre frequency LPA in dB(A) : A-weighted sound pressure level of air-regenerated noise, system attenuation taken into account LPA₁ in dB(A) : A-weighted sound pressure level of air-regenerated noise in the room with CS circular silencer, system attenuation taken into account LPA₂ in dB(A) : A-weighted sound pressure level of case-radiated noise, system attenuation taken into account LW in dB : Sound power level of the air-regenerated noise in the duct LW₂ in dB : Sound power level of the case-radiated noise V Nom in l/s and m³/h : Nominal flow rate (100 %) V in l/s and m³/h : Volume flow rate ∆V in ± % : Flow rate tolerance from setpoint value Vmin in l/s and m³/h : Set minimum volume flow rate V max in l/s and m³/h : Set maximum volume flow rate V min unit in l/s und m³/h : Minimum volume flow rate for unit ∆pst in Pa : Static pressure differential ∆pst min in Pa : Static minimum pressure differential All sound power levels are based on 1 pW, all sound pressure levels on 20µPa. All noise levels were determined in a reverberation chamber. The sound power data has been determined and corrected according to EN ISO 5135, February 1999. Technical data based on an air density of 1.2 kg/m³. 10 20 30 40 50 60 70 80 90 100 Vmin 10 20 30 40 50 60 70 80 90 100 Air flow velocity in m/s (approx.) 0.6 1.2 1.8 2.4 3.0 3.6 4.2 4.8 5.2 6.0 V max Nominal size 125 l/s 8 15 25 30 40 45 55 60 70 75 m³/h 30 55 80 110 135 160 190 215 245 270 160 l/s 12 25 35 50 60 70 85 95 110 120 m³/h 45 85 130 170 215 260 300 345 385 430 200 l/s 20 40 55 75 95 115 135 150 170 190 m³/h 70 135 205 275 340 410 480 550 615 685 250 l/s 30 60 90 120 150 180 210 240 270 300 m³/h 110 215 325 430 540 650 755 865 970 1080 6
Acoustic quick selection Using quick selection for sizing VAV controllers will rapidly provide optimum results. The first selection criteria are the given volume flow rates Vmin and V max . The expected sound pressure level in the room is then determined from the static pressure differential. The quick selection tables are based on normally accepted attenuation levels; if the sound pressure level exceeds the required level, a larger volume flow controller and/or a silencer is required. For dimensions and technical data for type CS sound attenuators refer to leaflet 6/5/EN/.... For a more detailed selection and design of type LVC-LowVelocity VAV controllers refer to the Easy Product Finder design programme on our homepage. System attenuation in dB/oct. acc. to VDI 2081 (values incorporated in the quick selection table) fm in Hz 63 Duct bend 0 0 1 2 3 3 3 3 Room attenuation 5 5 5 5 5 5 5 5 End reflection 10 5 2 0 0 0 0 0 125 250 500 Correction for distribution into the duct system (values incorporated in the quick selection table) V 1000 2000 4000 l/s 150 200 250 300 m³/h 540 720 900 1080 dB per octave 0 1 2 3 8000 4 dB/octave ceiling reduction and 5 dB/octave room attenuation have been allowed for in the calculation of case-radiated noise. Quick selection of sound pressure level LPA in dB(A) Air-regenerated noise Case-radiated noise Nominal size V ∆pst min ∆V ∆pst in Pa ∆pst in Pa ∆pst in Pa ∆pst ∆pst in Pa 50 150 300 50 150 300 50 150 300 300 50 150 300 Without CS CS050 L = 500 CS050 L = 1000 CS050 L = 1500 LPA LPA₁ LPA₁ LPA₁ LPA₂ l/s m³/h Pa ±% dB(A) dB(A) dB(A) dB(A) dB(A) 8 30 30 15 27 37 43 14 22 28 4 10 15 10 9 21 30 125 30 110 30 12 35 45 51 24 33 39 17 24 29 26 16 27 34 55 200 30 8 39 49 55 30 39 44 24 31 36 33 20 30 38 75 270 30 5 42 52 58 34 42 48 29 36 41 38 22 33 40 12 45 30 15 28 38 45 19 28 34 12 19 24 20 8 20 28 160 50 180 30 12 34 44 51 25 34 40 19 27 32 28 17 28 36 85 305 30 8 36 46 54 29 37 43 23 31 36 33 21 32 39 120 430 30 5 38 48 56 21 39 45 28 34 39 36 23 34 42 20 70 30 15 31 40 47 21 30 36 13 20 26 23 10 21 29 200 75 270 30 12 35 45 52 25 34 42 19 26 32 29 17 29 37 135 485 30 8 36 47 54 28 37 44 22 29 35 33 21 32 40 190 685 30 5 36 47 55 29 37 45 26 31 36 35 23 34 42 30 110 30 15 31 41 48 24 32 40 17 25 32 30 16 27 34 250 120 430 30 12 36 47 54 28 38 46 21 30 38 35 24 35 42 210 755 30 8 36 47 55 28 39 47 23 31 39 36 27 38 46 300 1080 30 5 36 48 55 29 39 48 25 32 39 37 29 40 48 7
Page 1 and 2: 5/5/EN/1 VARYCONTROL VAV Controller
Page 3 and 4: Innovation TROX LVC-LowVelocity - t
Page 5: Construction · Dimensions Characte
Page 9 and 10: Case-radiated noise Example (contd.
Page 11 and 12: Flow characteristics · Wiring exam

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