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GAS-FIRED CENTRAL HEATING BOILERS - SPECIFIC REQUIREMENTS FOR THE DOMESTIC HOT WATER OPERATION OF COMBINATION BOILERS OF NOMINAL HEAT INPUT NOT EXCEEDING 70 KW
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Superseded date: 01-10-2014
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Published date: 12-01-2013
Publisher: Swiss Standards
Foreword1 Scope2 Normative references3 Definitions3.1 Combination boiler3.2 'Summer' operating mode3.3 Specific rate3.4 Nominal domestic hot water heat input3.5 Maximum water service pressure3.6 Tank3.7 Thermal store3.8 Temperature relief valve3.9 Proportional control of the domestic hot water operation3.10 Thermostatic control of the domestic hot water operation3.11 Temperature holding thermostat4 Constructional requirements4.1 Materials and method of construction of components of the domestic water circuit4.2 Domestic water connections4.3 Soundness of the domestic water circuit4.4 Adjusting, control and safety devices for the domestic hot water circuit5 Operational requirements5.1 General5.2 Safety of the domestic hot water circuit5.2.1 Instantaneous and storage types5.2.2 Instantaneous type5.2.3 Storage type5.3 Rational use of energy5.3.1 Useful efficiency5.3.2 Losses5.4 Fitness for purpose5.4.1 Instantaneous and storage types - Specific rate5.4.2 Instantaneous type6 Test methods6.1 General 6.1.1 Adjustment of the domestic water pressure6.1.2 Operation of the boiler6.2 Safety of the domestic hot water circuit6.2.1 Instantaneous and storage types6.2.2 Instantaneous type6.2.3 Storage type6.3 Rational use of energy6.3.1 Useful energy6.3.2 Losses6.4 Fitness for the purpose6.4.1 Instantaneous and storage types - Specific water rate6.4.2 Instantaneous type7 Marking and instructions7.1 Data plate of the boiler and/or the tank7.2 Instructions7.2.1 Technical instructions for the installer7.2.2 Operating instructions for the userAnnex ZA (informative) Clauses of this European Standardaddressing essential requirements or other provisionsof EU DirectivesFigure1 Illustration of the test tank rig (see 6.3.2.1.3a)
Specifies the supplementary requirements and tests for the construction, safety, rational use of energy, fitness for purpose, classification and marking related to the domestic hot water operation of combination boilers. Only covers type testing.
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