NEN EN 1434-6 : 2015

Foreword
1 Scope
2 Normative reference
3 Definitions
  3.1 Heating system
  3.2 Heat mains
  3.3 Flow and return limbs
  3.4 Primary circuit
  3.5 Secondary circuit
  3.6 Competent authority
4 Requirements
  4.1 Design requirements
  4.2 Installation requirements
  4.3 Heat meter commissioning
      4.3.1 Certification check
      4.3.2 Installation check
      4.3.3 Heat meter security
Annex A (informative) Heat meter installation
        A.1 Introduction
        A.2 Criteria for the selection of a heat meter
        A.3 Quality of the heat-conveying liquid
        A.4 Heat meter flow circuit design
        A.5 Additional recommendations for cooling applications
Annex B (informative) Heat meter operational monitoring
        and maintenance
        B.1 Introduction
        B.2 Heat meter service life
        B.3 Heat meter monitoring procedures
        B.4 Maintenance check list
        B.5 Replacement of failed heat meters
List of references

Defines commissioning, operational monitoring and maintenance and applies to heat meters. Heat meters are instruments intended for measuring the energy which in a heat-exchange circuit is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid.