Grundfos ALPHA1 Montage- Und Betriebsanleitung Seite 9

English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1. Symbols used in this document
2. General description
2.1 Advantages of installing a GRUNDFOS ALPHA1
3. Identification
3.1 Nameplate
3.2 Type key
4. Applications
4.1 System types
4.2 Pumped liquids
4.3 System pressure
4.4 Relative air humidity (RH)
4.5 Enclosure class
4.6 Inlet pressure
5. Mechanical installation
5.1 Mounting
5.2 Control box positions
5.3 Changing the control box position
5.4 Insulation of pump housing
6. Electrical installation
7. Control panel
7.1 Elements on the control panel
7.2 Display
7.3 "POWER ON" light field
7.4 Light fields indicating the pump setting
7.5 Push-button for selection of pump setting
8. Setting the pump
8.1 Pump setting for system type
8.2 Pump control
9. Systems with bypass valve between flow and return
pipes
9.1 Purpose of bypass valve
9.2 Manually operated bypass valve
9.3 Automatic bypass valve (thermostatically controlled)
10. Startup
10.1 Before start-up
10.2 Venting the pump
10.3 Venting of heating systems
11. Pump settings and pump performance
12. Fault finding
13. Technical data and installation dimensions
13.1 Technical data
13.2 Installation dimensions, GRUNDFOS ALPHA1 XX-40,
XX-45, XX-50, XX-60 (international markets)
13.3 Installation dimensions, GRUNDFOS ALPHA1 XX-40,
XX-45, XX-60 (German market)
13.4 Installation dimensions, GRUNDFOS ALPHA1 XX-40,
XX-45, XX-60 (Austrian and Swiss markets)
14. Performance curves
14.1 Guide to performance curves
14.2 Curve conditions
14.3 Performance curves, ALPHA1 XX-40
14.4 Performance curves, ALPHA1 20-45 N 150
14.5 Performance curves, ALPHA1 XX-50
14.6 Performance curves, ALPHA1 XX-60
15. Accessories
16. Disposal
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
Page
must comply with local regulations and accepted
codes of good practice.
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Warning
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The use of this product requires experience with
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and knowledge of the product.
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Persons with reduced physical, sensory or
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mental capabilities must not use this product,
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unless they are under supervision or have been
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instructed in the use of the product by a person
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responsible for their safety.
12 Children must not use or play with this product.
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12 1. Symbols used in this document
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Warning
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If these safety instructions are not observed,
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it may result in personal injury.
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Warning
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If these instructions are not observed, it may lead
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to electric shock with consequent risk of serious
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personal injury or death.
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If these safety instructions are not observed,
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Caution
it may result in malfunction or damage to the
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equipment.
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Notes or instructions that make the job easier
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and ensure safe operation.
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