Grundfos MAGNA1 Installation And Operating Instructions Manual
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Grundfos MAGNA1 Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
MAGNA1
Installation and operating instructions

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Summary of Contents for Grundfos MAGNA1

  • Page 1 GRUNDFOS INSTRUCTIONS MAGNA1 Installation and operating instructions...

  • Page 2: Table Of Contents

    1. Limited warranty Products manufactured by GRUNDFOS PUMPS CORPORATION CONTENTS (Grundfos) are warranted to the original user only to be free of Page defects in material and workmanship for a period of 24 months from date of installation, but not more than 30 months from date Limited warranty of manufacture.

  • Page 3: Symbols Used In This Document

    Warning Do not use the pump for aggressive liquids, such The Grundfos MAGNA1 is a complete range of circulator pumps as acids and seawater. with integrated controller enabling adjustment of pump performance to the actual system requirements. In many...

  • Page 4: Operating Conditions

    3.3 Operating conditions 3.5 Insulating shells Insulating shells are available for single-head pumps only. Limit the heat loss from the pump housing and Note Note Min./Max. pipework. +14 °F to 230 °F The heat loss from the pump and pipework can be reduced by (-10 °C to +110 °C) insulating the pump housing and the pipework.

  • Page 5: Wiring Diagram

    3.7 Wiring diagram All cables must be connected in accordance with Caution local regulations. 3.7.1 For models 32-XX External switch GFCI Fuse (min. 10 A, time lag) Fig. 5 Example of terminal connection, 1 x 230 V ± 10 %, 50/60 Hz 3.7.2 For models 40-XX, 50-XX, 65-XX, 80-XX, 100-XX External switch GFCI...

  • Page 6: Nameplate

    3.8 Nameplate 3.9 Tools The pump nameplate provides the following information: 1.2 x 8.0 0.6 x 3.5 TX20 TYPE 2 BOITIER DE TYPE 2 THERMALLY PROTECTED Nonsubmersible Pump For use with maximum 230° F water RISK OF ELECTRIC SHOCK. DE-ENERGIZE EQUIPMENT BEFORE REMOVAL OF COVER & SERVICING. FOR SUPPLY CONNECTION USE COPPER WIRE SUITABLE FOR 90 °C OR EQUIVALENT.

  • Page 7: Mechanical Installation

    For large pumps, it may be necessary to use lifting equipment. 4.2 Installing the pump The MAGNA1 is designed for indoor installation. The pump may be suspended direct in the pipes, provided that the pipework can support the pump.

  • Page 8: Control Box Positions

    4.4 Control box positions To ensure adequate cooling, the control box must be in horizontal position with the Grundfos logo in vertical position. See fig. 10. Fig. 10 Pump with control box in horizontal position If the pump head is removed before the pump is installed in the...

  • Page 9: Changing The Control Box Position

    Place the control box in dripping from the clamp. horizontal position so that the Grundfos logo is in vertical Fit the insulating shells. position. The motor shaft must Note: For air conditioning and be horizontal.

  • Page 10: Electrical Installation

    5. Electrical installation Carry out the electrical connection and protection according to local regulations. Check that the supply voltage and frequency correspond to the values stated on the nameplate. Warning Switch off the power supply before making connections. Warning Never make any connections in the pump control box unless the power supply has been switched off for at least 5 minutes.

  • Page 11: Connection To The Power Supply

    5.2 Connection to the power supply Step Action Illustration 5.2.1 Models 32-XX Step Action Illustration Remove the front cover from the control box. Insert the supply plug into the power receptacle Locate the power on the PCB. L (L1) N (L2) supply plug inside the control box.
  • Page 12 5.2.2 Models 40-XX, 50-XX, 65-XX, 80-XX, 100-XX Step Action Illustration Step Action Illustration Remove the front cover from the Connect the cable control box. conductors to the Note: Do not power supply remove the plug. screws from the L - L or L1 cover.

  • Page 13: First Start-Up

    6. First start-up Do not start the pump until the system has been filled with liquid and vented. Furthermore, the required minimum inlet pressure must be available at the pump inlet. See section 13. Technical data. The system cannot be vented through the pump. The pump is self-venting.

  • Page 14: Settings

    Push-button for selection of pump setting. Constant curve/constant speed II 8.2 Grundfos Eye The Grundfos Eye is on when the power supply has been Constant curve/constant switched on. See fig. 13, pos. 1. speed I The Grundfos Eye is an indicator light providing information about the actual pump status.

  • Page 15: Overview Of Settings

    9. Overview of settings Fig. 15 Pump setting in relation to pump performance Setting Pump curve Function The duty point of the pump will move up or down on the lowest proportional-pressure curve, Lowest proportional- depending on the heat demand. See fig. 15. pressure curve The head (pressure) is reduced at falling heat demand and increased at rising heat demand.

  • Page 16: Pump Setting

    10. Pump setting Constant curve/constant speed (I, II or III) At constant-curve/constant-speed operation, the pump runs at a constant speed, independent of the actual flow demand in the system. The pump performance follows the selected performance curve, I, II or III. See fig. 19 where II has been selected. See section 11.

  • Page 17: Selection Of Control Mode

    11. Selection of control mode System application Select this control mode In systems with relatively large pressure losses in the distribution pipes and in air-conditioning and cooling systems. • Two-pipe heating systems with thermostatic valves and – very long distribution pipes Proportional pressure –...

  • Page 18: Fault Finding

    If not, replace the pump, or contains too much air. call GRUNDFOS SERVICE for assistance. Replace the pump, or call GRUNDFOS SERVICE for Internal fault in the pump electronics. assistance. Supply voltage to the pump too high.

  • Page 19: Technical Data

    0.145 psi / 0.01 bar / 0.001 MPa per 328 ft (100 m) altitude. 1 x 115 V ± 10 %, 50/60 Hz, PE. The MAGNA1 pump is only approved for an altitude of 6561 ft (2000 m) above sea level.
  • Page 21 GRUNDFOS Kansas City GRUNDFOS Canada GRUNDFOS México 17100 West 118th Terrace 2941 Brighton Road Boulevard TLC No. 15 Olathe, Kansas 66061 Oakville, Ontario L6H 6C9 Canada Parque Industrial Stiva Aeropuerto Phone: (913) 227-3400 Phone: +1-905 829 9533 C.P. 66600 Apodaca, N.L. México...
  • Page 22 L-MAG-TL-08 98459387 0714 ECM: 1138863 www.grundfos.com www.grundfos.us...

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