English (GB)
9
English (GB)
Installation and operating instructions
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this document
Advantages of installing a GRUNDFOS ALPHA1
Changing the control box position
Light fields indicating the pump setting
Push-button for selection of pump setting
Systems with bypass valve between flow and return
pipes
Manually operated bypass valve
Automatic bypass valve (thermostatically controlled)
10.3 Venting of heating systems
Pump settings and pump performance
Technical data and installation dimensions
13.2 Installation dimensions, GRUNDFOS ALPHA1 XX-40,
XX-45, XX-50, XX-60 (international markets)
13.3 Installation dimensions, GRUNDFOS ALPHA1 XX-40,
13.4 Installation dimensions, GRUNDFOS ALPHA1 XX-40,
XX-45, XX-60 (Austrian and Swiss markets)
14.1 Guide to performance curves
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
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warning
The use of this product requires experience with
and knowledge of the product.
Persons with reduced physical, sensory or
mental capabilities must not use this product,
unless they are under supervision or have been
instructed in the use of the product by a person
responsible for their safety.
Children must not use or play with this product.
Warning
If these safety instructions are not observed,
it may result in personal injury.
Warning
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
Caution
If these safety instructions are not observed,
it may result in malfunction or damage to the
equipment.
Note
Notes or instructions that make the job easier
and ensure safe operation.
Summary of Contents for ALPHA1 15-40
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