Grundfos ALPHA2 25-60 N 130 Installation And Operating Instructions Manual
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Grundfos ALPHA2 25-60 N 130 Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
GRUNDFOS ALPHA2
Installation and operating instructions

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Summary of Contents for Grundfos ALPHA2 25-60 N 130

  • Page 1 GRUNDFOS INSTRUCTIONS GRUNDFOS ALPHA2 Installation and operating instructions...
  • Page 2 Declaration of conformity GB: EC declaration of conformity PL: Deklaracja zgodności WE We, Grundfos, declare under our sole responsibility that the product My, Grundfos, oświadczamy z pełną odpowiedzialnością, że nasze GRUNDFOS ALPHA2, to which this declaration relates, is in conformity wyroby GRUNDFOS ALPHA2, których deklaracja niniejsza dotyczy, są...

  • Page 3: Table Of Contents

    General description instructed in the use of the product by a person Advantages of installing a GRUNDFOS ALPHA2 responsible for their safety. Identification Children must not use or play with this product.

  • Page 4: General Description

    2. General description The GRUNDFOS ALPHA2 circulator pump is designed for the circulation of water in heating systems and domestic hot-water systems. The pump is suitable for the following systems: • underfloor heating systems • one-pipe systems • two-pipe systems.

  • Page 5: Identification

    3. Identification 3.1 Nameplate ALPHA2 15-50 130 AUTO ADAPT P1(W) Prod. No. 95047500 Serial No. 00000001 Min. 0.05 KM07183 PC 0740 TF110 Max. 0.19 IP 42 230V ~ 50Hz 0.23 - Part 2 MADE IN DENMARK Fig. 2 Example of nameplate Pos.

  • Page 6: Applications

    German standard VDI 2035. In domestic hot-water systems, it is advisable to use GRUNDFOS ALPHA2 pumps only for water with a degree of hardness lower than approx. 14 °dH. For water with a higher degree of hardness, we recommend a direct-coupled TPE pump.

  • Page 7: Mechanical Installation

    Fig. 4 Mounting the GRUNDFOS ALPHA2 Arrows on the pump housing indicate the liquid flow direction through the pump. See section 14.2 Installation dimensions, GRUNDFOS ALPHA2 XX-50, XX-60. • Fit the two gaskets supplied when the pump is mounted in the pipe.

  • Page 8: Control Box Positions

    5.2 Control box positions Fig. 5 Control box positions Warning The pumped liquid may be scalding hot and under high pressure. Drain the system or close the isolating valves on either side of the pump before the screws are removed. Fill the system with the liquid to be pumped or Caution open the isolating valves when the position of the...

  • Page 9: Insulation Of Pump Housing

    5.4 Insulation of pump housing Fig. 6 Insulation of pump housing Limit the heat loss from the pump housing and Note pipework. The heat loss from the pump and pipework can be reduced by insulating the pump housing and the pipe. See fig. 6. As an alternative, polystyrene insulating shells can be fitted to the pump.

  • Page 10: Electrical Installation

    6. Electrical installation Fig. 7 Electrical connection Carry out the electrical connection and protection according to local regulations. Warning The pump must be connected to earth The pump must be connected to an external mains switch with a minimum contact gap of 3 mm in all poles.

  • Page 11: Control Panel

    See fig. 9. AUTO ALPHA2 15-50 130 ADAPT AUTO ADAPT III II I AUTO Fig. 9 Eight light fields Number of Fig. 8 GRUNDFOS ALPHA2 control panel button Light field Description presses The control panel comprises: AUTO ADAPT AUTO Pos. Description ADAPT...

  • Page 12: Setting The Pump

    8. Setting the pump 8.1 Pump setting for system type AUTO AUTO O O AUTO ADAPT ADAPT ADAPT ( OK ) AUTO AUTO O O AUTO ADAPT ADAPT ADAPT ( OK ) AUTO AUTO O O AUTO ADAPT ADAPT T ADAPT ( OK ) AUTO...

  • Page 13: Automatic Night Setback

    9. Automatic Night SetBack 9.2 Function of Automatic Night SetBack Once Automatic Night SetBack has been activated, the pump 9.1 Basis for Automatic Night SetBack changes automatically between normal duty and night setback. See section 12. Pump settings and pump performance. Changeover between normal duty and night setback is dependent on the flow-pipe temperature.

  • Page 14: Systems With Bypass Valve Between Flow And Return Pipes

    10. Systems with bypass valve between flow and return pipes 10.1 Purpose of bypass valve BYPASS min. POWER (OK) POWER (OK) POWER (OK) POWER POWER POWER ER (OK) Fig. 12 Systems with bypass valve Bypass valve The purpose of the bypass valve is to ensure that the heat from the boiler can be distributed when all valves in the underfloor- heating circuits and/or thermostatic radiator valves are closed.

  • Page 15: Startup

    11. Startup 11.3 Venting of heating systems 11.1 Before start-up Do not start the pump until the system has been filled with liquid and vented. The required minimum inlet pressure must be available at the pump inlet. See sections 4. Applications and 14.

  • Page 16: Pump Settings And Pump Performance

    12. Pump settings and pump performance 12.1 Relation between pump setting and pump performance Figure 15 shows the relation between pump setting and pump performance by means of curves. See also section 15. Performance curves. AUTO ADAPT AUTO ADAPT Fig. 15 Pump setting in relation to pump performance Setting Pump curve Function...

  • Page 17: Fault Finding

    13. Fault finding Warning Before starting work on the pump, switch off the power supply. Make sure that the power supply cannot be accidentally switched on. Fault Control panel Cause Remedy 1. The pump does not a) A fuse in the installation is blown. Replace the fuse.

  • Page 18: Technical Data And Installation Dimensions

    14. Technical data and installation dimensions 14.1 Technical data Supply voltage 1 x 230 V - 10 %/+ 10%, 50/60 Hz, PE. Motor protection The pump requires no external motor protection. Enclosure class IP42. Insulation class Relative air humidity Maximum 95 %. System pressure Maximum 1.0 MPa, 10 bar, 102 m head.

  • Page 19: Installation Dimensions, Grundfos Alpha2

    14.2 Installation dimensions, GRUNDFOS ALPHA2 XX-50, XX-60 Dimensional sketches and table of dimensions Fig. 16 Dimensional sketches, ALPHA2 XX-50, XX-60 Dimensions Pump type ALPHA2 15-50 130* 1 1/2 ALPHA2 15-60 130* 1 1/2 ALPHA2 15-50 N 130* 1 1/2 ALPHA2 20-50 N 150* 1 1/4 For UK only.

  • Page 20: Performance Curves

    15. Performance curves 15.1 Guide to performance curves Each pump setting has its own performance curve (Q/H curve). However, AUTO covers a performance range. ADAPT A power curve (P1 curve) belongs to each Q/H curve. The power curve shows the pump power consumption (P1) in Watt at a given Q/H curve.

  • Page 21: Curve Conditions

    15.2 Curve conditions The guidelines below apply to the performance curves on the following pages: • Test liquid: airless water. The curves apply to a density of ρ = 983.2 kg/m • and a liquid temperature of +60 °C. • All curves show average values and should not be used as guarantee curves.

  • Page 22: Performance Curves, Alpha2

    15.3 Performance curves, ALPHA2 XX-50 [kP a] Q [m³/h] Q [l/s] [W ] Q [m³/h] Fig. 18 ALPHA2 XX-50...
  • Page 23 15.4 Performance curves, ALPHA2 XX-60 [kP a] Q [m³/h] Q [l/s] [W ] Q [m³/h] Fig. 19 ALPHA2 XX-60...

  • Page 24: Accessories

    This product or parts of it must be disposed of in an environmentally 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 Turkey 20th km. Athinon-Markopoulou Av. New Zealand Тел.: +7 (375 17) 286 39 72, 286 39 73 GRUNDFOS POMPA San. ve Tic. Ltd. Sti. P.O. Box 71 Факс: +7 (375 17) 286 39 71 GRUNDFOS Pumps NZ Ltd. Gebze Organize Sanayi Bölgesi GR-19002 Peania E-mail: minsk@grundfos.com...
  • Page 26 95047457 0813 ECM: 1119836 www.grundfos.com...

This manual is also suitable for:

Alpha2 15-50 130Alpha2 15-60 130Alpha2 15-50 n 130Alpha2 20-50 n 150

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