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NS EN 14812 : 2005 + A1 2007

Current

Current

The latest, up-to-date edition.

WATER CONDITIONING EQUIPMENT INSIDE BUILDINGS - CHEMICAL DOSING SYSTEMS - PRE-SET DOSING SYSTEMS- REQUIREMENTS FOR PERFORMANCE, SAFETY AND TESTING

Published date

12-01-2013

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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Design requirements
   4.1 Materials of construction
   4.2 Connections
   4.3 Venting
   4.4 Radio interference and electrical safety
   4.5 Dosing agent containers
   4.6 Accessibility
   4.7 Nominal size
5 Performance requirements
   5.1 Dosing and dosing agents
        5.1.1 Dosing agents
        5.1.2 Dosing
   5.2 Working ranges
   5.3 Protection against backflow of proprietary chemical
   5.4 Working temperature range
   5.5 Pressure conditions
        5.5.1 Nominal pressure and working pressure range
        5.5.2 Effects of pressure variations
        5.5.3 Pressure drop
        5.5.4 Water hammer
6 Testing
   6.1 General
   6.2 Dosing and dosing agents
        6.2.1 Test rig
        6.2.2 Analysis
        6.2.3 Quality of test water
        6.2.4 Sampling
        6.2.5 Evaluation of results
        6.2.6 Dosing agents
        6.2.7 Dosing
   6.3 Working ranges
   6.4 Protection against backflow of dosing agent
        6.4.1 Procedure
        6.4.2 Evaluation of results
   6.5 Pressure conditions
        6.5.1 Nominal pressure and working pressure range
        6.5.2 Static pressure
        6.5.3 Dynamic pressure
        6.5.4 Working pressure range
        6.5.5 Pressure drop
7 Labelling
   7.1 Nameplate on dosing apparatus
   7.2 Information to be given on dosing agent container
8 Manufacturer's product information
Annex A (informative) Examples of connections
Bibliography

Defines definitions, principles of construction (but not dimensions) and design, requirements on performance and operation as well as methods for testing the performance of chemical preset dosing systems for conditioning water proposed for human consumption inside buildings which are permanently connected to the mains supply.

DevelopmentNote
2005 Edition Re-Issued in October 2007 & incorporates AMD 1 2007. (10/2007)
DocumentType
Standard
PublisherName
Norwegian Standards (Norges Standardiseringsforbund)
Status
Current

Standards Relationship
BS EN 14812 : 2005 Identical
DIN EN 14812:2007-09 Identical
UNI EN 14812 : 2007 Identical
I.S. EN 14812:2005 Identical
UNE-EN 14812:2006 Identical
EN 14812:2005+A1:2007 Identical

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