EN 14800:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.DSDUDWRYGewellte, metallene Sicherheits-Gasschlauchleitungen für den Anschluss von Haushalts-GasgerätenTuyaux flexibles métalliques onduleux de securité pour le raccordement d'appareils a usage domestique utilisant des gaz combustiblesCorrugated safety metal hose assemblies for the connection of domestic appliances using gaseous fuels91.140.40Sistemi za oskrbo s plinomGas supply systems77.140.75Jeklene cevi in cevni profili za posebne nameneSteel pipes and tubes for specific useICS:Ta slovenski standard je istoveten z:EN 14800:2007SIST EN 14800:2007en,fr,de01-oktober-2007SIST EN 14800:2007SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14800March 2007ICS 23.040.70 English VersionCorrugated safety metal hose assemblies for the connectiondomestic appliance using gaseous fuelsTuyaux flexibles métalliques onduleux de securité pour leraccordement d'appareils à usage domestique utilisant desgaz combustiblesGewellte, metallene Sicherheits-Gasschlauchleitungen fürden Anschluss von Haushalts-GasgerätenThis European Standard was approved by CEN on 6 December 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of 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.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14800:2007: ESIST EN 14800:2007

Hose fitting design requirements for connection to the gas supply pipework, to the pressure reduction device of portable gas bottles or to domestic appliance.37 Annex B (normative)
Thermal attack by a single burning item.53 B.1 General.53 B.2 Scope.54 B.3 Standardized mounting and fixing.54 Annex C (normative)
Single-flame source test.55 C.1 General.55 C.2 Scope.55 C.3 Standardized mounting and fixing.56 C.4 Test definition.56 C.5 Test duration.56 Annex ZA (informative)
Clauses of this EN addressing the provisions of EU Construction Products Directive.57 ZA.1 Scope and relevant characteristics.57 SIST EN 14800:2007

1 Scope This European Standard specifies the requirements of performance, the material and the test methods of corrugated safety metal gas hose assemblies for the connection of domestic appliances, in order to achieve save operation. The corrugated metal gas hose assemblies according to this European Standard are suitable for the connection of domestic appliances inside or outside a dwelling, using gas at a pressure lower than 0,5 bar. 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 437:2003, Test gases — Test pressures — Appliance categories EN 549, Rubber materials for seals and diaphragms for gas appliances and gas equipment EN 1418, Welding personnel — Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1775:1998, Gas supply — Gas pipework for buildings — Maximum operating pressure ≤ 5 bar — Functional recommendations EN 13133, Brazing — Brazer approval EN 13134, Brazing — Procedure approval EN 13501-1:2006, Fire classification of construction products and building elements — Part 1: Classification using test data from reaction to fire tests EN 13823, Reaction to fire tests for building products — Building products excluding floorings exposed to the thermal attack by a single burning item prEN 15069:2004, Safety gas connection valves for metal hose assemblies used for the connection of domestic appliances using gaseous fuel EN ISO 9001:2000, Quality management systems — Requirements (ISO 9001:2000) EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2006) EN ISO 10380, Pipework — Corrugated metal hoses and hose assemblies (ISO 10380:2003) EN ISO 11925-2, Reaction to fire tests — Ignitability of building products subjected to direct impingement of flame — Part 2: Single-flame source test (ISO 11925-2:2002) SIST EN 14800:2007

3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 domestic appliance appliance intended for use by individual householders inside or outside a dwelling 3.2 corrugated safety metal gas hose assembly element of flexible pipe-work to be fitted between the gas supply valve or the socket of a quick disconnect device and the appliance inlet connection, consisting of a corrugated metal hose, its end fittings with appropriate gaskets and, if required, an armouring and/or an external protection 3.3 CMG hose assembly abbreviation used in this European Standard to denote a corrugated safety metal gas hose assembly as defined in 3.2 3.4 corrugated metal hose pressure-tight hose made from tube or from welded strip with corrugations, helicoidal or annular to the axis of the hose, made by deforming the metal 3.5 end fittings components attached to a metal hose so as to constitute a metal hose assembly 3.6 screwed connection leak-tight threaded connection, which can only be assembled and disassembled with an appropriate tool 3.7 integrated non-detachable fitting end fitting, permanently attached to the corrugated metal hose by such a method as welding or brazing, so as to ensure that it can not be detached without destruction or alteration 3.8 safety quick connection device end fitting consisting of two parts that is designed to permit quick connection and disconnection without tools, leak-tight so that it prevents the release of gas from the upstream pipe work when disconnected and designed to prevent accidental disconnection and incorrect operation 3.9 armouring external reinforcement, partly or wholly covering the corrugated metal hose, which is designed to improve the mechanical characteristics of the hose 3.10 external protection outer cover used to protect the hose from environmental and other outside influences SIST EN 14800:2007

These gases are commonly referred to as manufactured gases, natural gases or liquefied petroleum gases (LPG) 4 Construction requirements 4.1 General These requirements shall ensure that the construction of a CMG hose assembly which, when properly installed and correctly used, under normal chemical, mechanical and thermal conditions will provide long term safe operation without degradation. CMG hose assemblies are subdivided into: type 1: CMG hose assemblies having no additional component limiting their bending radii; type 2: CMG hose assemblies having an additional component limiting their bending radii. SIST EN 14800:2007

5 Performance requirements and tests 5.1 General If any sample fails one of the tests within the test sequence schedule given in Table 1 then all samples shall be deemed to have failed to meet the type test requirements of this European Standard. The tests are performed under ambient conditions. If not otherwise indicated the following tolerances shall apply: atmospheric pressure: (± 0,1) mbar air pressure: (± 5 %) flow rate: (± 5) % ambient temperature: (± 1 °C) temperature above 125 °C: (± 10) °C time: (± 0,1) % dimensions: (± 0,1) mm
5.2 Test sequence schedule For each DN, nine CMG hose assemblies of 1 m length, three of 1,5 m length and five of 0,5 m length shall be tested in the sequence given in Table 1. SIST EN 14800:2007

Table 1 — Test sequence schedule Hose assembly No 1 2 3 4 5 6 7 8 9 10 to 15 16 17 No of samples Hose length in metres
1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 1,0 0,5 + 1,5 0,5 0,5
Initial leak-tightness test 5.3.2 X X X X X X X X X X X X 17 Structural strength test 5.4.2
X
1 Flow rate test 5.5.2 X
1 Electrical continuity test 5.6.2 X
1 Tension test 5.7.2
X
1 Durability of marking test 5.8.2 X
1 Working temperature test 5.9.2 X X
2 Salt spray test 5.10.2.1 X
1 Hydrochloric acid test 5.10.2.2 X
1 Household cleaning agent test 5.10.2.3
X
1 Reaction to fire 5.11.2
X
3 +3 Fire resistance test 5.12.2
X 1 Suppleness test 5.13.2
X
1 Bending test non-restricted bend radius or Bending test restricted bend radius 5.14.1.2
5.14.2.2
X
X
X
3 Flexing test 5.15.2
X X X
3 Torsion test 5.16.2
X
1 Impact resistance test 5.17.2
X
1 Penetration test 5.18.2 X
Fitting tests where requested 5.19
Drop test 5.19.2.1
X
1 Crush test 5.19.2.2
X
1 Torque test 5.19.3.2
X
1 Final leak-tightness test 5.3.2 X X X X X X X X X
X
20 mm equally spaced along the length of the hose. 5.4 Structural strength 5.4.1 Requirements A CMG hose assembly shall have a structural strength capable of resisting any environmental mechanical influence reasonably foreseen. This shall be regarded as being equivalent to withstanding an internal pressure of 6 bar. 5.4.2 Test procedure The length of the CMG hose assemblyshall be measured on a flat surface and recorded. The CMG hose assembly, one of its ends being free to move, shall be gradually pressurised up to 6 bar. This pressure shall be maintained for at least 5 min. The permanent elongation of the CMG hose assembly after release of pressure shall not exceed 3 % of its length before pressurisation. With the exception of the permanent elongation, no visual deformation of the corrugated hose or any other part of the assembly shall be permitted. Following the test the CMG hose assembly shall be subjected to the leak-tightness test given in 5.3.2. 5.5 Flow rate 5.5.1 Requirements The minimum flow rate through a CMG hose assembly without the valve and when tested as follows shall be as given in Table 2. SIST EN 14800:2007

1 mbar Minimum air flow rate for gas Type L with a pressure drop of 0,5 mbar DN 8 1,0 m 0,5 m3/h 0,55 m³/h DN 12 1,0 m 1,5 m3/h 1,2 m³/h
The power equivalent of the gas flowing through a CMG hose assembly is also influenced by the hose length and the type of the gas family. The manufacturer shall indicate for each length the minimum power rating relating to the individual gas family. NOTE Type L gas is a low calorific gas as defined in EN 437:2003, Table 1. 5.5.2 Test procedure Air shall be supplied at constant pressure to a positive displacement differential meter of suitable range, having an error not greater than 5 % of the rate to be measured. The air shall be passed at a pressure of 20 mbar, through a straight length of pipe connected directly to the inlet of the CMG hose assembly, see Figure 1a. Any additional pressure drop created by adapters fitted to the CMG hose assembly shall be deducted from the measured value. The pipe shall have a bore size as given in Figure 1b, detail A, and is to be at least 10 pipe diameters in length with a pressure tapping five diameters upstream of the hose assembly. Another pressure tapping is positioned five pipe diameters downstream of the hose assembly on a similar pipe, which is also of at least
10 diameters in length. A differential pressure gauge capable of being read directly to 0,05 mbar or less is connected as shown in Figure 1a. The air flow rate is adjusted by means of a control valve on the outlet of the pipe to give the required differential pressure across the CMG hose assembly and the air temperature is maintained to ± 0,5 °C. The flow rate shall be recorded and corrected to standard conditions of 1 013,25 mbar and 15 °C. If the hose has an end fitting which incorporates features that are part of a quick connection device, and those features impair the flow, they may be eliminated for the purposes of this test. NOTE The flow rate of an end fitting which forms part of a safety quick connection device is tested as part of the quick connection device under the requirements of prEN 15069. SIST EN 14800:2007

Key 1 adjustable governor for inlet pressure 2 thermometer for air temperature 3 flow meter 4 inlet pressure gauge 5 outlet pressure gauge 6 differential pressure gauge 7 CMG hose assembly 8 manual control valve Figure 1a — Configuration of flow test equipment SIST EN 14800:2007

Dimensions in millimetres
d min.d min. + 2030900,5-φ1
Key 1 4 holes ø 1,5 mm
Nominal size DN Diameter d min mm 8 9 12 15 Figure 1b — Detail A Figure 1 — Flow test equipment 5.5.3 Conversion of air flow rate Depending on the means of measurement used, the corrected rated flow rate is calculated from the following equation: airarmr15,27315,28825,101325,101325,1013tpppddVV+•+•+•= (1) where
Vr is the volumetric air flow rate under reference conditions, in m3/h;
Vm is the volumetric air flow rate under test conditions, in m3/h;
pa is the atmospheric pressure, in mbar;
p is the air supply pressure at the inlet of the meter, in mbar; SIST EN 14800:2007

tair is the air temperature at the measuring point, in °C;
d is the density of air used (e.g. if a wet meter is used);
dr
is the dry air density. If a dry meter is used, the ratio 1r=dd. 5.6 Electric continuity 5.6.1 Requirements The CMG hose assembly shall be electrically continuous. The electric resistance of an installed hose assembly shall not exceed 1 Ω/m. 5.6.2 Test procedure A CMG hose assembly of 1 m nominal length shall be connected between copper dummy fittings representative of the gas inlet and appliance connection. These dummy fittings shall be connected for a maximum of 1 min to an alternating current of 25 A supplied by a generator whose open circuit voltage does not exceed 12 V. The voltage drop shall be measured between the dummy fittings and the electric resistance shall be calculated from the voltage drop and the related current. The resistance shall not exceed 1 Ω/m, measured with an accuracy of ± 2 %. The electric resistance of the electric cables shall not be included in the measurement. 5.7 Tension 5.7.1 Requirements A CMG hose assembly shall withstand an axial tension of 1 000 N without leakage. When under this load the assembly length shall not increase by more than 10 %. After release of the load the permanent elongation shall not exceed more than 3 % of the original length and the assembly shall meet the requirements of 5.3.1. 5.7.2 Test procedure The CMG hose assembly, including its cover if fitted, shall be attached at one end by its end fitting to a fixed support. The other end shall be fixed to a movable part, which moves in the axis of the hose assembly. The CMG hose assembly shall be put under tension until the value of 1 000 N is reached. The test rig shall have a feed rate of (100 ± 5) mm/min. The tension value of 1 000 N shall be maintained for 5 min. CMG hose assemblies incorporating quick connection fittings shall be attached with the quick connection at the fixed support of the test fixture. Such attachment shall be of the same kind as used in service and the quick connection valve shall be in its open position. During the test the CMG hose assembly length shall not increase more than 10 %. After the test upon visual examination there shall be no deterioration, the permanent elongation shall not exceed 3 % and the CMG hose assembly shall pass the leak-tightness test given in 5.3.1. SIST EN 14800:2007

122354 Key 1 hose fixing 2 slide 3 Movable cylinder 4 hose 5 cotton cloth Figure 2 — Details of the durability of marking test rig SIST EN 14800:2007

72 h. The assembly shall then be removed, allowed to cool to room temperature, and subjected to a visual examination. There shall be no visible cracking or deterioration other than a change of colour of the cover and plastic parts. 5.10 Corrosion resistance 5.10.1 Requirements Following the corrosion tests given in 5.10.2 the CMG hose assembly shall show no visual sign of corrosion or other deterioration, which may reasonably be expected to influence the safe performance of the product. Covers if fitted shall be liquid tight in order to prevent penetration of liquid under the cover and onto the corrugated hose. 5.10.2 Test procedure 5.10.2.1 Salt spray test A CMG hose assembly of 1 m length, complete with its cover if fitted shall be placed in a salt spray test chamber conforming to EN ISO 9227. The CMG hose assembly is not under pressure. Caps shall close the CMG hose assembly. The test chamber shall spray a saline solution having a mass concentration of
5 % (± 0,5 %) sodium chloride in distilled water. The intensity of the spray shall be such that, for each 80 cm2 of the horizontal collecting surface, 2 ml (± 1 ml) of solution are collected per hour. The t
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