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

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GRUNDFOS INSTRUCTIONS
New MAGNA1
Model C
Installation and operating instructions

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Summary of Contents for Grundfos MAGNA1 C

  • Page 1 GRUNDFOS INSTRUCTIONS New MAGNA1 Model C Installation and operating instructions...

  • Page 2: Table Of Contents

    4.1 Single-head pump A blue or grey circle with a white graphical symbol 4.2 Twin-head pump indicates that an action must be taken. 4.3 Connecting the pump to Grundfos GO Handling and storing the product 5.1 Storing the product Product introduction...

  • Page 3: Receiving The Product

    2. Receiving the product 2.3 Lifting the pump 2.1 Inspecting the product Observe local regulations concerning limits for Check that the product is in accordance with the order. manual lifting or handling. Check that the voltage and frequency of the product match the voltage and frequency of the installation site.

  • Page 4: Installing The Product

    3. Installing the product 3.3 Mechanical installation Install the pump so that it is not stressed by the pipes. For maximum permissible forces and moments from pipe connections acting on the pump flanges, see page 533. You can suspend the pump directly in the pipes, provided that the pipes support the pump.
  • Page 5 Pump installed with horizontal motor shaft 3.3.2 Control box positions To ensure adequate cooling, make sure that the control box is in horizontal position with the Grundfos logo in vertical position. See Fig. 9 Correctly centred sealing system fig. 7.
  • Page 6 Fit the insulating shells. The insulating shells for Place the control box in pumps in horizontal position so air-conditioning and that the Grundfos logo cooling systems must is in vertical position. be ordered separately. The motor shaft must be in horizontal position.

  • Page 7: Electrical Installation

    As an alternative to insulating shells, you can insulate the pump 3.4 Electrical installation housing and pipes as illustrated in fig. 12. Do not insulate the control box or cover the control panel. Carry out the electrical connection and protection according to local regulations.
  • Page 8 3.4.2 Connection diagrams External switch Fuse RCD/RCCB Digital inputs Relay outputs Fig. 13 Example of a mains-connected motor with main switch, backup fuse and additional protection Make sure that the fuse is dimensioned according to the nameplate and local regulations. Connect all cables in accordance with local regulations.
  • Page 9 3.4.3 Connection to the power supply Step Action Illustration Step Action Illustration Remove the front Tighten the cable cover from the gland. control box. Refit the front Do not remove the cover. screws from the cover. Locate the power 3.4.4 Connection to external control supply plug and cable gland in the small cardboard...
  • Page 10 3.4.5 Connecting the digital input 3.4.6 Connecting the fault relay output Step Action Illustration Step Action Illustration Remove the front Remove the front cover from the cover from the control box. control box. Do not remove the Do not remove the screws from the screws from the cover.

  • Page 11: Starting Up The Product

    Grundfos GO via infrared communication (IR). In addition, twin Make sure that both pump heads are powered on. head pumps can be connected to Grundfos GO via radio. Grundfos GO allows you to adjust the set point of the proportional pressure curve (see section 7.1.1 Adjusting the proportional The pumps are paired from factory.

  • Page 12: Handling And Storing The Product

    To prevent corrosion or lime precipitation, check and maintain the glycol mixture regularly. If further dilution of the supplied glycol is Grundfos MAGNA1 is a complete range of circulator pumps with required, follow the glycol supplier's instructions. integrated controller enabling adjustment of pump performance to the actual system requirements.

  • Page 13: Identification

    6.3 Identification 6.4 Insulating shells Insulating shells are available for single-head pumps only. 6.3.1 Nameplate Limit the heat loss from the pump housing and pipes. Reduce the heat loss from the pump and pipes by insulating the pump housing and the pipes. See fig. 18. •...

  • Page 14: Control Functions

    7. Control functions 7.1.1 Adjusting the proportional pressure using Grundfos GO The set point of the proportional pressure curve can be adjusted using Grundfos GO. This is only possible in proportional pressure mode, not in other modes. Step Action Illustration Choose "Settings"...

  • Page 15: Constant-Pressure Curve (Cp1, Cp2 Or Cp3)

    7.2 Constant-pressure curve (CP1, CP2 or CP3) Step Action Illustration Constant-pressure control adjusts the pump performance to the actual flow rate demand in the system, but the pump performance follows the selected performance curve, CP1, CP2 or CP3. See fig. where CP1 has been selected.

  • Page 16: Overview Of Control Functions

    7.4 Overview of control functions Fig. 24 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-pressure depending on the flow rate demand. See fig. 24. curve The head is reduced at falling flow rate demand and increased at rising flow rate demand.

  • Page 17: Selecting Control Function

    7.5 Selecting control function 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 the following: – very long distribution pipes Proportional pressure –...

  • Page 18: Operating The Product

    Push-button for selection of pump setting. referred to as CP3 7.6.1 Grundfos Eye Grundfos Eye is on when you switch on the power supply. See Constant curve III fig. 25, pos. 1. Grundfos Eye is an indicator light providing information about the actual pump status.

  • Page 19: Pairing And Unpairing Twin-Head Pumps

    Step Action Illustration Push and hold the The light in the button on the center of the pump you wish to Grundfos Eye will assign as master disappear. The for 5 seconds. system has been The Grundfos Eye de-activated. 5 sec.

  • Page 20: Communication, Control And Monitoring

    7.8.1 Digital input (Start/Stop). Model: Made in Germany XXXX Grundfos Holding A/S, DK - 8850 Bjerringbro, Denmark To monitor the twin-head pump via the fault relay output, see section 3.4.6 Connecting the fault relay output. Fig. 27 Identifying the master pump head on the nameplate For redundancy purposes, the digital input can be used concurrent on the slave pump head.

  • Page 21: Fault Finding The Product

    Two opposite red indicator lights flashing Alarm. The pump is stopped. simultaneously. 8.2 Fault finding It is possible to connect MAGNA1 model C to Grundfos GO and read out alarm codes and text (see section 8.3 Fault finding table) via the "Alarms and warnings" menu.
  • Page 22 If communication is re-established, the warning is automatically reset. By default the It is possible to choose whether warning 77 should trigger the fault relay fault relays or not. This is done in Grundfos GO: setting is activated. Step Action Illustration...

  • Page 23: Fault Finding Table

    (29) "Forced pumping". "Alarm" electronics. Switch off the pump on the main switch. If the light in Grundfos Eye is on, the pump is running in forced-pumping Other pumps or sources force mode. "Forced pumping" (29) flow through the pump even if Check the system for defective non-return valves and "Alarm"...

  • Page 24: Accessories

    9. Accessories 9.2 Blanking flanges A blanking flange is used to blank off the opening when one of the pumps of a twin-head pump is removed for service to enable uninterrupted operation of the other pump. 9.1 Insulating kits for air-conditioning and cooling systems You can fit single-head pumps for air-conditioning and cooling systems with insulating shells.

  • Page 25: Technical Data

    However, anti-corrosive additives at a temperature of 20 °C. Grundfos recommends you to operate at the lowest possible speed curve to minimise energy losses. There are no minimum Minimum inlet pressure flow requirements.
  • Page 26 Appendix 1. Dimensions P N 6 P N 1 0 / 1 6 Fig. 1 Single-head pump dimensions, terminal-connected versions, flanged version Dimensions [mm] Pump type MAGNA1 32-120 F (N) 90/100 14/19 MAGNA1 40-80 F (N) 100/110 14/19 MAGNA1 40-100 F (N) 100/110 14/19 MAGNA1 40-120 F (N)
  • Page 27 Fig. 2 Twin-head pump dimensions, terminal-connected versions, flanged version Dimensions [mm] Pump type MAGNA1 D 32-120 F 90/100 14/19 MAGNA1 D 40-80 F 100/110 14/19 MAGNA1 D 40-100 F 100/110 14/19 MAGNA1 D 40-120 F 100/110 14/19 MAGNA1 D 40-150 F 100/110 14/19 MAGNA1 D 40-180 F...
  • Page 28 2. Forces and moments Maximum permissible forces and moments from the pipe connections acting on the pump flanges are indicated in fig 3. Fig. 3 Forces and moments from the pipe connections acting on the pump flanges Force Moment [Nm] ΣFb ΣMb Diameter DN...
  • Page 30 Unit 1, Ground floor Turkey Av. Humberto de Alencar Castelo Branco, Siu Wai Industrial Centre GRUNDFOS Pumper A/S GRUNDFOS POMPA San. ve Tic. Ltd. Sti. 29-33 Wing Hong Street & Strømsveien 344 Gebze Organize Sanayi Bölgesi CEP 09850 - 300...
  • Page 31 99209952 1017 ECM: 1219752 www.grundfos.com...

This manual is also suitable for:

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