Foreword
This document (EN 1434-6:2007) has been prepared by Technical Committee CEN/TC 176 “Heat Meters”, the
secretariat of which is held by DS.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by August 2007, and conflicting national standards shall be withdrawn at
the latest by August 2007.
This document supersedes EN 1434-6:1997.
The other parts are:
Part 1 - General requirements
Part 2 - Constructional requirements
Part 3 - Data exchange and interfaces
Part 4 - Pattern approval tests
Part 5 - Initial verification tests
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and United Kingdom.
1 Scope
This European Standard specifies installation, commissioning, operational monitoring and maintenance and
applies to heat meters, that is to instruments intended for measuring the heat which, in a heat-exchange
circuit, is absorbed (cooling) or given up (heating) by a liquid called the heat-conveying liquid. The heat meter
indicates the quantity of heat in legal units.
Electrical safety requirements are not covered by this European Standard.
Pressure safety requirements are not covered by this European Standard.
Surface mounted temperature sensors are not covered by this European Standard.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 1434-1:2007, Heat meters — Part 1: General requirements
3 Terms and definitions
For the purpose of this document, the terms, definitions and symbols given in Clause 4 of EN 1434-1:2007
and the following apply.
3.1
heating system
heating installation of the dwelling or premises, including the exchange circuit, the heat meter, the associated
fittings and the electrical equipment
NOTE The heating system typically commences and finishes at the two connections to the heat mains
3.2
heat mains
heat suppliers distribution pipes to which the consumer's installation is connected
3.3
flow and return limbs
pipes connecting the heating system to the heat mains
3.4
primary circuit
circuit hydraulically connected to the heat mains
3.5
secondary circuit
circuit hydraulically separated from the primary circuit.
3.6
competent authority
persons or organizations charged with the responsibility for the heat meter and/or its installation