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DOUBLE INLET CENTRIFUGAL FANS WITH BACKWARD CURVED BLADES – NTHZ ZWEISEITIGSAUGENDE RADIALVENTILATOREN MIT RÜCKWÄRTSGEKRÜMMTEN SCHAUFELN- NTHZ VENTILATEURS CENTRIFUGES DOUBLE ASPIRATION AVEC AUBES COURBÉES VERS L’ARRIÈRE – NTHZ VENTILATORI CENTRIFUGHI A DOPPIA ASPIRAZIONE A PALE ROVESCE – NTHZ C-0077 December 2004 5.3. Sound data tables 5.3. Schallpegeltabelle 5.3. Donnés sur le niveau sonore 5.3. Dati di rumorosità Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 315 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 355 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 400 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 450 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 500 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 560 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Area 3 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Area 3 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Area 3 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Area 3 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Area 3 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Area 3 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 1940 12,7 11 5 3 -4 -7 -10 -16 -24 RPM > 1941 11,3 8 7 0 -1 -6 -8 -16 -23 RPM < 1940 8,0 4 0 3 -4 -6 -8 -15 -24 RPM > 1941 7,0 3 2 -4 -3 -5 -7 -14 -21 RPM < 1940 7,9 4 -1 3 -5 -6 -7 -15 -24 RPM > 1941 5,5 2 -2 -6 -4 -5 -6 -12 -17 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 1940 11,6 10 3 2 -5 -6 -8 -13 -22 RPM > 1941 9,1 7 1 -1 -3 -5 -7 -14 -21 RPM < 1940 8,3 6 -2 1 -5 -5 -7 -13 -22 RPM > 1941 3,8 -2 -4 -4 -4 -5 -7 -13 -20 RPM < 1940 6,7 3 -3 1 -5 -5 -7 -13 -22 RPM > 1941 4,2 0 -4 -6 -4 -5 -7 -12 -19 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 980 12,2 10 6 3 -5 -6 -11 -18 -24 981 1941 8,5 6 1 -1 -3 -5 -9 -16 -23 RPM < 980 9,8 7 3 3 -5 -7 -11 -17 -24 981 1941 5,8 2 -1 -3 -4 -5 -7 -14 -22 RPM < 980 8,6 5 3 1 -4 -5 -9 -15 -23 981 1941 5,9 3 -2 -5 -3 -6 -8 -13 -22 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 980 10,9 8 6 1 -5 -5 -10 -15 -23 981 1941 11,5 10 3 0 -3 -4 -9 -15 -22 RPM < 980 6,4 2 1 -2 -5 -4 -9 -14 -23 981 1941 3,5 -2 -5 -8 -3 -4 -8 -13 -21 RPM < 980 5,6 0 0 -2 -4 -4 -8 -13 -22 981 1941 3,9 -2 -3 -6 -3 -5 -8 -11 -17 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 1230 11,4 8 7 2 -4 -5 -11 -17 -23 1231 1941 14,7 14 4 0 -3 -4 -10 -16 -23 RPM < 1230 7,1 2 2 0 -4 -4 -9 -15 -23 1231 1941 3,8 -2 -5 -7 -2 -3 -10 -15 -22 RPM < 1230 7,0 3 1 -1 -4 -4 -8 -13 -22 1231 1941 4,5 -1 -4 -4 -2 -4 -9 -13 -19 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 980 10,1 6 6 2 -4 -5 -12 -17 -23 981 1941 8,7 6 2 -1 -3 -4 -11 -17 -23 RPM < 980 8,6 5 3 1 -4 -4 -11 -17 -24 981 1941 4,6 0 -3 -6 -2 -4 -10 -16 -22 RPM < 980 7,7 2 3 1 -3 -4 -10 -16 -23 981 1941 4,5 -1 -4 -5 -1 -4 -10 -15 -19 16
Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 630 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 710 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 800 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 900 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 1000 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 1120 Fan model and size Ventilator-Baugröße Taille du ventilateur Grandezza del ventilatore NTHZ 1250 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Area 3 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 Volume flow range Volumenstrom Interval du debit Intervallo di portata Area 1 Area 2 DOUBLE INLET CENTRIFUGAL FANS WITH BACKWARD CURVED BLADES – NTHZ ZWEISEITIGSAUGENDE RADIALVENTILATOREN MIT RÜCKWÄRTSGEKRÜMMTEN SCHAUFELN- NTHZ VENTILATEURS CENTRIFUGES DOUBLE ASPIRATION AVEC AUBES COURBÉES VERS L’ARRIÈRE – NTHZ VENTILATORI CENTRIFUGHI A DOPPIA ASPIRAZIONE A PALE ROVESCE – NTHZ C-0077 December 2004 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 980 11,8 9 7 1 -4 -5 -11 -16 -24 RPM > 981 9,7 6 5 1 -4 -4 -10 -16 -24 RPM < 980 8,5 0 6 1 -4 -5 -10 -16 -24 RPM > 981 4,1 -3 -5 -1 -4 -4 -10 -15 -24 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 490 7,0 3 0 0 -4 -3 -11 -17 -25 491 981 8,8 6 2 1 -5 -4 -13 -17 -24 RPM < 490 10,4 8 4 1 -3 -4 -12 -17 -25 491 981 5,6 1 -4 0 -4 -3 -11 -17 -25 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 490 13,5 12 5 4 -5 -6 -11 -18 -24 491 981 9,2 6 3 1 -3 -4 -11 -16 -24 RPM < 490 7,4 2 2 1 -2 -5 -12 -16 -25 RPM > 981 6,2 0 -2 2 -3 -5 -11 -16 -23 RPM < 490 8,2 5 1 1 -4 -5 -9 -15 -23 491 981 5,0 -2 -3 0 -3 -4 -10 -16 -24 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 490 11,0 8 6 0 -1 -5 -13 -19 -24 491 981 10,2 7 5 1 -2 -5 -12 -18 -25 RPM < 490 8,7 5 3 0 -1 -5 -13 -19 -26 491 981 5,9 -2 -1 1 -1 -5 -12 -18 -26 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 490 11,9 10 5 0 -1 -5 -12 -18 -25 491 981 10,8 8 3 4 -1 -5 -12 -18 -25 RPM < 490 7,9 2 4 0 -2 -5 -11 -17 -24 491 981 7,9 2 2 3 -2 -5 -11 -17 -24 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 490 13,5 12 6 1 0 -5 -12 -18 -25 491 981 11,8 9 5 4 0 -4 -13 -18 -25 RPM < 490 9,4 5 5 0 -1 -3 -10 -15 -19 491 981 8,5 3 3 3 -2 -5 -11 -16 -24 Speed range Drehzahl Interval de vitesse Intervallo di velocità ∆LW4 ∆Lwoct4 63 ∆Lwoct4 125 ∆Lwoct4 250 ∆Lwoct4 500 ∆Lwoct4 1000 ∆Lwoct4 2000 ∆Lwoct4 4000 ∆Lwoct4 8000 RPM < 490 13,5 12 6 1 0 -5 -12 -18 -25 RPM > 491 12,6 11 5 1 0 -5 -12 -20 -25 RPM < 490 9,4 5 5 0 -1 -3 -10 -15 -19 RPM > 491 8,6 4 4 1 -2 -6 -11 -17 -24 17
Page 1 and 2: NTHZ DOUBLE INLET CENTRIFUGAL FANS
Page 3 and 4: DOUBLE INLET CENTRIFUGAL FANS WITH
Page 9 and 10: 4. Fan performances 4. Ventilator L
Page 13 and 14: 4.5.Temperature and altitude correc
Page 17: 5.2. Total Sound Power Level at the
Page 21 and 22: Fan selection for the following ope
Page 23 and 24: Therefore the new operating paramet
Page 25 and 26: Fan curves plotted for air density:
Page 39 and 40: 7.3. NTHZ 400 ÷ 500 T2L DOUBLE INL
Page 41 and 42: 7.5. NTHZ 1120; 1250 T1 / T2 a b c
Page 43 and 44: Motor base plates / Motor rails Mot
Page 47 and 48: 8.4. Flexible outlet connection ..A
Page 49 and 50: 8.11. Anti vibration mountings, rub
Page 51 and 52: 8.16.1. Fan installation recommenda
Page 61 and 62: NTHZ-BP Comefri's NTHZ-BP Twin Fans
Page 63 and 64: 14. Twin fans dimensions 14.1. NTHZ
Page 65 and 66: 14.3. NTHZ-BT 315 ÷ 630 DOUBLE INL
Page 67 and 68: 14.5. NTHZ-BT2/T1 500 ÷ 1000 note:

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