Table Of Contents; General Information; Hazard Statements - Grundfos ALPHA2 L Series Installation And Operating Instructions Manual

English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
1. General information
1.1 Hazard statements
1.2 Notes
2. Receiving the product
2.1 Inspecting the product
2.2 Scope of delivery
3. Installing the product
3.1 Mechanical installation
3.2 Mounting
3.3 Control box positions
3.4 Changing the control box position
3.5 Insulation of pump housing
4. Electrical installation
4.1 Assembling the plug
5. Starting up the product
5.1 Before startup
5.2 Venting the pump
5.3 Venting of heating systems
6. Product introduction
6.1 Product description
6.2 Application
6.3 Advantages of installing a GRUNDFOS ALPHA2 L
6.4 Intended use
6.5 Pumped liquids
6.6 System pressure
6.7 Relative air humidity (RH)
6.8 Enclosure class
6.9 Inlet pressure
7. Identification
7.1 Nameplate
7.2 Type key
8. Accessories
9. Operating panel
9.1 Elements on the operating panel
9.2 "POWER ON" light field
9.3 Light fields indicating the pump setting
9.4 Push-button for selection of pump setting
10. Setting the pump
10.1 Pump setting for system type
10.2 Pump control
11. Systems with bypass valve between flow and return
pipes
11.1 Purpose of bypass valve
11.2 Manually operated bypass valve
11.3 Automatic bypass valve (thermostatically controlled)
12. Pump settings and pump performance
12.1 Relation between pump setting and pump performance 14
13. Fault finding the product
13.1 Fault finding table
14. Technical data and installation dimensions
14.1 Technical data
14.2 Installation dimensions, GRUNDFOS ALPHA2 L XX-
40, XX-50, XX-60
15. Performance curves
15.1 Guide to performance curves
15.2 Curve conditions
15.3 Performance curves, ALPHA2 L XX-40
15.4 Performance curves, ALPHA2 L XX-50
15.5 Performance curves, ALPHA2 L XX-60
16. Disposing of the product
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Read this document and the quick guide before you
install the product. Installation and operation must
comply with local regulations and accepted codes of
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good practice.
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This appliance can be used by children aged from 8
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years and above and persons with reduced physical,
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sensory or mental capabilities or lack of experience
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and knowledge if they have been given supervision
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or instruction concerning use of the appliance in a
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safe way and understand the hazards involved.
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Children shall not play with the appliance. Cleaning
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and user maintenance shall not be made by children
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without supervision.
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1. General information

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1.1 Hazard statements

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The symbols and hazard statements below may appear in
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Grundfos installation and operating instructions, safety
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instructions and service instructions.
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DANGER
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Indicates a hazardous situation which, if not avoided,
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will result in death or serious personal injury.
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WARNING
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Indicates a hazardous situation which, if not avoided,
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could result in death or serious personal injury.
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CAUTION
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Indicates a hazardous situation which, if not avoided,
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could result in minor or moderate personal injury.
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The text accompanying the three hazard symbols DANGER,
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WARNING and CAUTION is structured in the following way:
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SIGNAL WORD
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Description of hazard
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Consequence of ignoring the warning.
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- Action to avoid the hazard.
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The hazard statements are structured in the following way:
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