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EN 625:1995

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Gas-fired central heating boilers - Specific requirements for the domestic hot water operation of combination boilers of nominal heat input not exceeding 70 kW
Superseded date

07-01-2014

Published date

09-08-1995

Foreword
1 Scope
2 Normative references
3 Definitions
3.1 Combination boiler
3.2 'Summer' operating mode
3.3 Specific rate
3.4 Nominal domestic hot water heat input
3.5 Maximum water service pressure
3.6 Tank
3.7 Thermal store
3.8 Temperature relief valve
3.9 Proportional control of the domestic hot water
        operation
3.10 Thermostatic control of the domestic hot water
        operation
3.11 Temperature holding thermostat
4 Constructional requirements
4.1 Materials and method of construction of
        components of the domestic water circuit
4.2 Domestic water connections
4.3 Soundness of the domestic water circuit
4.4 Adjusting, control and safety devices for the
        domestic hot water circuit
5 Operational requirements
5.1 General
5.2 Safety of the domestic hot water circuit
5.2.1 Instantaneous and storage types
5.2.2 Instantaneous type
5.2.3 Storage type
5.3 Rational use of energy
5.3.1 Useful efficiency
5.3.2 Losses
5.4 Fitness for purpose
5.4.1 Instantaneous and storage types - Specific rate
5.4.2 Instantaneous type
6 Test methods
6.1 General
6.1.1 Adjustment of the domestic water pressure
6.1.2 Operation of the boiler
6.2 Safety of the domestic hot water circuit
6.2.1 Instantaneous and storage types
6.2.2 Instantaneous type
6.2.3 Storage type
6.3 Rational use of energy
6.3.1 Useful energy
6.3.2 Losses
6.4 Fitness for the purpose
6.4.1 Instantaneous and storage types - Specific
        water rate
6.4.2 Instantaneous type
7 Marking and instructions
7.1 Data plate of the boiler and/or the tank
7.2 Instructions
7.2.1 Technical instructions for the installer
7.2.2 Operating instructions for the user
Annex ZA (informative) Clauses of this European Standard
addressing essential requirements or other provisions
of EU Directives
Figure
1 Illustration of the test tank rig (see 6.3.2.1.3a)

This standard supplements standards EN 297, prEN 483 and prEN 677, hereafter called 'boiler standards'. It 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. The domestic hot water is produced on either the instantaneous or storage principle. The domestic hot water production is integrated or coupled, the whole being marketed as a single unit. This standard does not apply to two appliances included in the same case which operate independently of each other - a boiler and a water heater - even if they have a common flue. This standard only covers type testing.

Committee
CEN/TC 109
DevelopmentNote
Superseded by EN 15502-2-2 but remains current until 2017. (08/2014)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Superseded
SupersededBy

Standards Relationship
DIN EN 625:1995-10 Identical
NBN EN 625 : 1995 Identical
NF EN 625 : 1995 Identical
NEN EN 625 : 1995 Identical
NS EN 625 : 1ED 1995 Identical
I.S. EN 625:1996 Identical
PN EN 625 : 2008 Identical
SN EN 625 : 1996 Identical
UNI EN 625 : 1996 Identical
UNE-EN 625:1996 Identical
BS EN 625:1996 Identical

DIN EN 13203-3:2010-12 Solar supported gas-fired domestic appliances producing hot water - Appliances not exceeding 70 kW heat input and 500 litres water storage capacity - Part 3: Assessment of energy consumption
12/30267090 DC BS EN 13203-5. Gas-fired domestic appliance producing hot water. Assessment of energy consumption of gas fired appliances combined with electrical heat pump
00/242179 DC : DRAFT MAY 2000 IEC 60335-2-102, ED. 1 - PARTICULAR REQUIREMENTS FOR ELECTRICALLY SUPPLIED APPLIANCES WITH NON-ELECTRIC HEATING SOURCES FOR HOUSEHOLD AND SIMILAR USE
PREN 15316-4-1 : DRAFT 2014 HEATING SYSTEMS AND WATER BASED COOLING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF SYSTEM ENERGY REQUIREMENTS AND SYSTEM EFFICIENCIES - PART 4-1: SPACE HEATING AND DHW GENERATION SYSTEMS, COMBUSTION SYSTEMS (BOILERS, BIOMASS)
EN 13203-3:2010 Solar supported gas-fired domestic appliances producing hot water - Appliances not exceeding 70 kW heat input and 500 litres water storage capacity - Part 3: Assessment of energy consumption
05/30142230 DC : DRAFT DEC 2005 EN 13203-1 - GAS-FIRED DOMESTIC APPLIANCES PRODUCING HOT WATER - APPLIANCES NOT EXCEEDING 70 KW HEAT INPUT AND 300 LITRES WATER STORAGE CAPACITY - PART 1: ASSESSMENT OF PERFORMANCE OF HOT WATER DELIVERIES
98/706084 DC : DRAFT MAR 1998 PREN 13203 - QUALIFICATION OF DOMESTIC HOT WATER FUNCTION OF GAS-FIRED APPLIANCES FOR DOMESTIC USE
07/30159519 DC : 0 BS EN 13203-3 - SOLAR SUPPORTED GAS-FIRED DOMESTIC APPLIANCES PRODUCING HOT WATER - APPLIANCES NOT EXCEEDING 70KW HEAT INPUT AND 500 LITERS WATER STORAGE CAPACITY - PART 3: ASSESSMENT OF ENERGY CONSUMPTION
DIN EN 15316-3-3:2008-06 HEATING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF SYSTEM ENERGY REQUIREMENTS AND SYSTEM EFFICIENCIES - PART 3-3: DOMESTIC HOT WATER SYSTEMS, GENERATION
BS EN 15316-3-3:2007 Heating systems in buildings. Method for calculation of system energy requirements and system efficiencies Domestic hot water systems, generation
ISO 13675:2013 Heating systems in buildings Method and design for calculation of the system energy performance Combustion systems (boilers)
VDI 3805 Blatt 20:2017-02 Product data exchange in the building services - Storage tanks and instantaneous water heater
10/30233943 DC : 0 BS EN 13203-4 - GAS FIRED DOMESTIC APPLIANCES PRODUCING HOT WATER - PART 4: ASSESSMENT OF ENERGY CONSUMPTION OF GAS FIRED APPLIANCES COMBINED HEAT AND POWER (MICRO CHP) PRODUCING HOT WATER AND ELECTRICITY NOT EXCEEDING 70 KW HEAT INPUT AND 500 L WATER STORAGE CAPACITY
07/19990369 DC : 0 BS EN 806-4 - SPECIFICATIONS FOR INSTALLATIONS INSIDE BUILDINGS CONVEYING WATER FOR HUMAN CONSUMPTION - PART 4 - INSTALLATION
14/30311499 DC : 0 BS EN 15316-4-1 - HEATING SYSTEMS AND WATER BASED COOLING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF SYSTEM ENERGY REQUIREMENTS AND SYSTEM EFFICIENCIES - PART 4-1: SPACE HEATING AND DHW GENERATION SYSTEMS, COMBUSTION SYSTEMS (BOILERS, BIOMASS)
UNI EN 13203-3 : 2010 SOLAR SUPPORTED GAS-FIRED DOMESTIC APPLIANCES PRODUCING HOT WATER - APPLIANCES NOT EXCEEDING 70 KW HEAT INPUT AND 500 LITRES WATER STORAGE CAPACITY - PART 3: ASSESSMENT OF ENERGY CONSUMPTION
05/30137893 DC : 0 EN 15316-3-3 - HEATING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF SYSTEM ENERGY REQUIREMENTS AND SYSTEM EFFICIENCIES - PART 3.3: DOMESTIC HOT WATER SYSTEMS, GENERATION
I.S. EN 13203-3:2010 SOLAR SUPPORTED GAS-FIRED DOMESTIC APPLIANCES PRODUCING HOT WATER - APPLIANCES NOT EXCEEDING 70 KW HEAT INPUT AND 500 LITRES WATER STORAGE CAPACITY - PART 3: ASSESSMENT OF ENERGY CONSUMPTION
BS EN 677:1998 Gas-fired central heating boilers. Specific requirements for condensing boilers with a nominal heat input not exceeding 70 kW
BS EN 806-2:2005 Specifications for installations inside buildings conveying water for human consumption Design
EN 15316-3-3:2007 Heating systems in buildings - Method for calculation of system energy requirements and system efficiencies - Part 3-3: Domestic hot water systems, generation
EN 806-2:2005 Specification for installations inside buildings conveying water for human consumption - Part 2: Design
BS EN 50165:1997 Electrical equipment of non-electric appliances for household and similar purposes. Safety requirements
12/30239784 DC : 0 BS ISO 13675 - HEATING AND COOLING SYSTEMS IN BUILDINGS - METHOD AND DESIGN FOR CALCULATION OF THE SYSTEM ENERGY PERFORMANCE - COMBUSTION SYSTEMS (BOILERS)
BS ISO 13675:2013 Heating systems in buildings. Method and design for calculation of the system energy performance. Combustion systems (boilers)
UNI EN 806-2 : 2008 SPECIFICATION FOR INSTALLATIONS INSIDE BUILDINGS CONVEYING WATER FOR HUMAN CONSUMPTION - PART 2: DESIGN
UNE-EN 13203-3:2011 Solar supported gas-fired domestic appliances producing hot water - Appliances not exceeding 70 kW heat input and 500 litres water storage capacity - Part 3: Assessment of energy consumption
I.S. EN 15316-3-3:2007 HEATING SYSTEMS IN BUILDINGS - METHOD FOR CALCULATION OF SYSTEM ENERGY REQUIREMENTS AND SYSTEM EFFICIENCIES - PART 3-3: DOMESTIC HOT WATER SYSTEMS, GENERATION
DIN EN 806-2:2005-06 Specification for installations inside buildings conveying water for human consumption - Part 2: Design

ISO 274:1975 Copper tubes of circular section — Dimensions
EN 297:1994/A2:1996/AC:2006 GAS-FIRED CENTRAL HEATING BOILERS - TYPE B[11] AND B[11BS] BOILERS FITTED WITH ATMOSPHERIC BURNERS OF NOMINAL HEAT INPUT NOT EXCEEDING 70 KW
ISO 7-1:1994 Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation
EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation

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