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BS EN 1434-6:2015

BS EN 1434-6:2015

$142.49

Heat meters – Installation, commissioning, operational monitoring and maintenance

Published By Publication Date Number of Pages
BSI 2015 28
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This European Standard specifies 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. 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. This standard covers meters for closed systems only, where the differential pressure over the thermal load is limited.

PDF Catalog

PDF Pages PDF Title
4 Contents Page
5 European foreword
7 1 Scope
2 Normative references
3 Terms and definitions
8 4 Requirements
4.1 Design requirements
Table 1 — Typical systematic negative error as a function of differential pressure and temperature difference
9 4.2 Installation requirements
10 4.3 Heat meter commissioning
4.3.1 General
4.3.2 Certification check
4.3.3 Installation check
4.3.4 Heat meter security
11 Annex A (informative) Heat meter installation
A.1 General
A.2 Criteria for the selection of a heat meter
A.3 Quality of the heat conveying liquid
A.3.1 General
12 A.3.2 Primary water quality
A.3.3 Secondary water quality
A.4 Heat meter flow circuit design
13 A.5 Additional recommendations for cooling application
A.6 Examples for the installation of heat and cooling meters
Figure A.1 — Definition of Symbols
14 Figure A.2 — Typical installation of a heat meter in a district heating network – Installation in circuit with variable flow and permanent positive temperature difference
15 Figure A.3 — Typical installation of a heat meter in a district heating network – A substation with parallel heat exchangers for space heating and domestic hot water
16 Figure A.4 — Typical installation of a heat meter in a local distribution network – Installation in circuit with nearly constant flow
17 Figure A.5 — Typical installation of a heat meter in a local distribution network – Installation in circuit with variable flow
18 Figure A.6 — Typical installation of a cooling meter in a local distribution network – Installation in circuit with variable flow
19 Figure A.7 — Typical installation of a cooling meter in a local distribution network – Installation only in a circuit with variable flow
A.7 Additional recommendations for large pipes > DN 250
20 Figure A.8 — Quadrant installation of four temperature sensors
21 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
22 B.5 Replacement of failed heat meters
23 Figure B.1 — Maintenance report (example)
24 Annex C (informative) Suggested gauge for checking the dimensions of installed temperature sensor pockets
Figure C.1 — Suggested dimensions of gauge shown together with a pocket
25 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2004/22/EC, MID
Table ZA.1 — Correspondence between this European Standard and Directive2004/22/EC, MID
26 Bibliography

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BS EN 1434-6:2015
$142.49