Grundfos NB Series Installation And Operating Instructions Manual
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Grundfos NB Series Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
NB, NBG
Installation and operating instructions

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Summary of Contents for Grundfos NB Series

  • Page 1 GRUNDFOS INSTRUCTIONS NB, NBG Installation and operating instructions...
  • Page 2 Δήλωση Συμμόρφωσης Overeenkomstigheidsverklaring Εμείς η Grundfos δηλώνουμε με αποκλειστικά δική μας ευθύνη ότι τα Wij Grundfos verklaren geheel onder eigen verantwoordelijkheid dat de προιόντα NB και NBG συμμορφώνονται με την Οδηγία του Συμβουλίου επί produkten NB en NBG waarop deze verklaring betrekking heeft in overeen- της...
  • Page 3 Försäkran om överensstämmelse Vastaavuusvakuutus Vi Grundfos försäkrar under ansvar, att produkterna NB och NBG, som Me Grundfos vakuutamme yksin vastuullisesti, että tuotteet NB ja NBG, omfattas av denna försäkran, är i överensstämmelse med Rådets Direktiv jota tämä vakuutus koskee, noudattavat direktiivejä jotka käsittelevät EY:n om inbördes närmande till EU-medlemsstaternas lagstiftning, avseende...
  • Page 4 Izjava o konformitetu Declaraţie de conformitate Mi, Grundfos, izjavljujemo pod potpunom odgovornošću da su proizvodi NB i Noi, Grundfos, declarăm asumându-ne întreaga responsabilitate că NBG na koje se odnosi ova izjava u saglasnosti sa smernicama i produsele NB, NBG la care se referă această declaraţie sunt în uputstvima Saveta za usaglašavanje pravnih propisa članica Evropske...
  • Page 5 Paziņojums par atbilstību prasībām Свідчення про відповідність вимогам Sabiedrība Grundfos ar pilnu atbildību dara zināmu, ka izstrādājumi Ми, фірма Grundfos, із усією відповідальністю заявляємо, що вироби NB un NBG, uz kuriem attiecas šis paziņojums, atbilst šādām Padomes NB і NBG до яких і відноситься дане свідоцтво відповідають вимогам...
  • Page 7 NB, NBG Installation and operating instructions Montage- und Betriebsanleitung Notice d'installation et d'entretien Istruzioni di installazione e funzionamento Instrucciones de instalación y funcionamiento Instruções de instalação e funcionamento Οδηγίες εγκατάστασης και λειτουργίας Installatie- en bedieningsinstructies Monterings- och driftsinstruktion Asennus- ja käyttöohjeet Monterings- og driftsinstruktion Instrukcja montażu i eksploatacji Руководство...

  • Page 8: Table Of Contents

    Page Pump type and model are stated on the pump nameplate. General information The pumps are fitted with Grundfos motors, type MG or MMG. If the pump is fitted with a motor make other than Grundfos, please Delivery and handling...

  • Page 9: Type Keys

    3. Type keys 3.2 Type NBG 3.1 Type NB -125 /142 A -F -A -BAQE Type range -125 /142 A -F -A -BAQE NBGE Type range Nominal diameter of suc- tion port (DN) Nominal diameter of discharge Nominal diameter of discharge port (DN) port (DN) Nominal impeller diameter [mm]...
  • Page 10 Mechanical shaft seal Shaft seal diameter [mm] 28, 38 Temperature Code Maximum pressure [bar] range Rubber bellows seal, metal-impregnated carbon/silicon carbide, BAQE 0°C to +120°C EPDM Rubber bellows seal, metal-impregnated carbon/silicon carbide, BAQV 0°C to +90°C Rubber bellows seal, silicon carbide/silicon carbide, EPDM BQQE 0°C to +90°C Rubber bellows seal, silicon carbide/silicon carbide, FKM...

  • Page 11: Impeller Diameter

    For heating systems, the water quality should meet VDI 2035. 4.7 Maximum flow rate Contact Grundfos for further information. The maximum flow rate must not exceed the values stated for the individual pump on page 463, as otherwise there is a risk of for 4.

  • Page 12: Pump Without Motor

    5. Pump without motor 5.1 Motor without feet NB and NBG pumps are available without motor. The pumps are supplied as complete pumps with a transport bracket protecting the shaft seal during transport. When you mount the motor, follow the instructions shown in these drawings. 1.
  • Page 13 5. Press down the threaded pipe to ensure that the shaft is in 6. Remove the threaded pipe. bottom position. 7. Tighten the hexagon socket head screws in the shaft. 8. Fit the coupling guard.

  • Page 14: Motor With Feet

    5.2 Motor with feet NB and NBG pumps are available without motor. The pumps are supplied as complete pumps with a transport bracket protecting the shaft seal during transport. When you mount the motor, follow the instructions shown in these drawings. 1.
  • Page 15 5. Press down the threaded pipe to ensure that the shaft is in 6. Remove the threaded pipe. bottom position. 7. Tighten the hexagon socket head screws in the shaft. 8. Fit the coupling guard.

  • Page 16: Installation

    6. Installation Horizontal installation: • Pumps fitted with motors up to and including 4 kW require a 6.1 Preparations before installation 300 mm clearance behind the motor, fig. 8. Note: It is very important to handle the equipment correctly • Pumps fitted with motors of 5.5 kW and up require a 300 mm before installation.

  • Page 17: Foundation

    Absorption of thermal expansion and contraction of pipework in functional faults which will damage the pump components. caused by variations in liquid temperature. Grundfos recommends to install the pump on a concrete founda- • Reduction of mechanical influences in connection with pres- tion which is heavy enough to provide permanent and rigid sup- sure surges in the pipework.

  • Page 18: Pipework

    6.7 Pipework 6.9 Measuring instruments The pump housing must not be stressed by the pipework. To ensure continuous monitoring of operation, it is recommended See 7. Flange forces and moments. to install a pressure gauge (on the discharge side) and a mano- vacuum gauge (on the suction side).

  • Page 19: Flange Forces And Moments

    1610 1855 2275 3360 * ΣF and ΣM are the vector sums of the forces and moments. If not all loads reach the maximum permissible value, one of these value may exceed the normal limit. Contact Grundfos for further information.

  • Page 20: Electrical Connection

    In hot-water installations, special attention should be All three-phase Grundfos MG and MMG motors of 3 kW and up paid to the risk of personal injury caused by scalding incorporate a thermistor. See the instructions in the motor termi- hot water.

  • Page 21: Checking The Direction Of Rotation

    80 - 100 112 - 132 If Grundfos is requested to service the pump, Grundfos must be contacted with details about the pumped liquid, etc. before the 160 - 180 pump is returned for service. Otherwise Grundfos can refuse to 200 - 225 accept the pump for service.

  • Page 22: Calculation Of Minimum Inlet Pressure

    13. Calculation of minimum inlet pressure The minimum inlet pressure "H" in metres head required during operation to avoid cavitation in the pump can be calculated from the following formula: H = p x 10.2 – NPSH – H – H –...

  • Page 23: Fault Finding Chart

    14. Fault finding chart Before removing the terminal box cover and before any removal/dismantling of the pump, make sure that the electricity sup- ply has been switched off. It must be ensured that it cannot be accidentally switched on. Fault Cause Remedy 1.

  • Page 24: Disposal

    This product or parts of it must be disposed of in an environmen- tally sound way: 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. Subject to alterations.
  • Page 25 Airborne noise emitted by pumps with MG, MMG, Siemens and TECO motors 50 Hz 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min [dB(A)] Motor MG model C Siemens MMG model E TECO [kW] model B model D 4-pole...
  • Page 26 60 Hz 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min [dB(A)] Motor MG model C Siemens MMG model E TECO [kW] model B model D 4-pole 2-pole 4-pole 2-pole 2-pole 4-pole 6-pole 2-pole 4-pole 6-pole 2-pole...
  • Page 27 Maximum flow rate NB, 50 Hz 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 32-125/97 29.8 32-125.1/116 11.0 100-160/160-142 92.9 32-125/107...
  • Page 28 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 50-200/167 92.5 50-315/314 53.7 50-200/178 99.5 50-315/344 60.0 50-200/187 107.4 65-125/124 78.1 50-200/205...
  • Page 29 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 125-200/191 303.5 125-200/208 326.2 125-200/218 343.7 125-200/226 360.0 125-250/214 351.5 125-250/224 373.8 125-250/243...
  • Page 30 NB, 60 Hz 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 32-125/97 29.8 32-125.1/116 11.0 100-160/160-154 111.7 32-125/107 32.1 32-125.1/132 12.9...
  • Page 31 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 50-200/178 99.5 50-315/344 60.0 50-200/187 107.4 65-125/124 78.1 50-200/205 121.8 65-125/136 84.0 50-200/218...
  • Page 32 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 125-200/208 326.2 125-200/218 343.7 125-200/226 360.0 125-250/214 351.5 125-250/224 373.8 125-250/243 417.0 125-250/258...
  • Page 33 NBG, 50 Hz 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 50-32-125.1/100 16.2 50-32-125.1/121 10.0 125-100-160/160-142 92.9 50-32-125.1/110 18.6 50-32-125.1/139 11.6...
  • Page 34 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 80-65-160/150 86.3 80-50-200/219 58.0 200-150-400/408 446.9 80-65-160/167 98.3 80-50-250/221 46.1 200-150-400/430 497.3 80-65-160/177...
  • Page 35 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 125-80-315/328 338.1 125-100-250/245 200.5 125-100-160/160-156 294.8 125-100-250/266 222.4 125-100-160/169 334.8 125-100-250/270 236.0 125-100-160/176...
  • Page 36 2-pole: n = 2900 min 4-pole: n = 1450 min 6-pole: n = 970 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 200-150-400/438 780.0 200-150-500/459 541.8 200-150-500/489 583.1 200-150-500/521 643.6...
  • Page 37 NBG, 60 Hz 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 50-32-125/97 29.8 50-32-125.1/116 11.0 125-100-160/160-154 111.7 50-32-125/107 32.1 50-32-125.1/132 12.9...
  • Page 38 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 80-65-125/113 93.3 80-50-200/178 51.3 200-150-400/358 386.8 80-65-125/124 103.8 80-50-200/193 58.8 200-150-400/380 418.5 65-50-125/131...
  • Page 39 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 125-80-160/165 302.1 125-80-200/202 139.3 125-80-200/169 244.3 125-80-200/222 164.0 125-80-200/179 262.4 125-80-250/211 118.5 125-80-200/192...
  • Page 40 2-pole: n = 3500 min 4-pole: n = 1750 min 6-pole: n = 1170 min Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] Pump type Max. Q [m³/h] 150-125-400/438 420.0 150-125-500/423 338.1 150-125-500/447 367.5 150-125-500/474 401.8 150-125-500/508 449.0 200-150-200/214-174 540.1 200-150-200/218-202...
  • Page 41 NPSH values 50 Hz 50-32-125 50-32-125.1 50-32-160.1 32-125, 50 Hz 32-125.1, 50 Hz 32-160.1, 50 Hz [kPa] [kPa] [kPa] 2-pole 2-pole 2-pole 4-pole 4-pole 4-pole 30 Q [m³/h] Q [m³/h] Q [m³/h] Q [l/s] Q [l/s] Q [l/s] 50-32-160 50-32-200.1 50-32-200 23-160, 50 Hz 32-200.1, 50 Hz...
  • Page 42 100-80-160 100-65-200 100-65-250 65-160, 50 Hz 65-200, 50 Hz 65-250, 50 Hz [kPa] [kPa] [kPa] 2-pole 2-pole 2-pole 4-pole 4-pole 4-pole 80 100 120 140Q [m³/h] 80 100 120 140Q [m³/h] 20 40 60 80 100 120 140 Q [m³/h] 40 Q [l/s] 40 Q [l/s] Q [l/s]...
  • Page 43 125-80-400 125-100-400 150-125-400 80-400, 50 Hz 100-400, 50 Hz 125-400, 50 Hz [kPa] [kPa] [kPa] 4-pole 4-pole 4-pole 6-pole 6-pole 0 20 40 60 80 100 120 140 160 Q [m³/h] Q [m³/h] 50 100 150 200 250 300 350Q [m³/h] 50 Q [l/s] Q [l/s] 100 Q [l/s]...
  • Page 44 60 Hz 50-32-125 50-32-125.1 50-32-160.1 32-125, 60 Hz 32-125.1, 60 Hz 32-160.1, 60 Hz [kPa] [kPa] [kPa] 2-pole 2-pole 2-pole 4-pole 4-pole 4-pole Q [m³/h] 30 Q [m³/h] Q [m³/h] 8 Q [l/s] Q [l/s] 8 Q [l/s] 50-32-160 50-32-200.1 50-32-200 23-160, 60 Hz 32-200.1, 60 Hz...
  • Page 45 125-80-160 100-65-250 125-80-200 80-160, 60 Hz 65-250, 60 Hz 80-200, 60 Hz [kPa] [kPa] [kPa] 2-pole 2-pole 2-pole 4-pole 4-pole 4-pole 20 40 60 80 100 120 140 Q [m³/h] 120 160 200 240 Q [m³/h] 80 120 160 200 240 280Q [m³/h] Q [l/s] Q [l/s] 80 Q [l/s]...
  • Page 46 200-150-400 200-150-315 200-150-500, 60 Hz 150-400, 60 Hz 150-315, 60 Hz [kPa] [kPa] [kPa] 4-pole 4-pole 4-pole 6-pole 6-pole 6-pole 100 200 300 400 500 600 700Q [m³/h] 100 200 300 400 500 600 700Q [m³/h] 0 100 200 300 400 500 600 700 Q [m³/h] 200 Q [l/s] 200 Q [l/s]...
  • Page 47 Vapour pressure in metres head (°C)
  • Page 51 Argentina Netherlands Turkey Bombas GRUNDFOS de Argentina S.A. Schlüterstr. 33 GRUNDFOS Nederland B.V. GRUNDFOS POMPA San. ve Tic. Ltd. Sti. 40699 Erkrath Postbus 104 Gebze Organize Sanayi Bölgesi Ruta Panamericana km. 37.500 Lote 34A 1619 - Garin Tel.: +49-(0) 211 929 69-0...
  • Page 52 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence 96483177 1206 Repl. 96483177 0505 www.grundfos.com...

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