【導(dǎo)讀】如果買家需要PDF格式的本標(biāo)準(zhǔn)，可以提供郵箱給我，我。免費(fèi)發(fā)送到你的郵箱。

　　

【正文】 Replacement: In general, eight samples are required for the tests. The tests of and of Clauses 15 and 16 are carried out on one sample. The tests of and of Clause 30 are carried out on one sample. The test of is carried out on two samples. One of these samples is also used for the test of . The test of is carried out on one sample. The remaining tests are carried out on the sixth sample. The other two samples are required for incorporating into the test arrangement to create the necessary thermal environment. NOTE 101 Additional samples may be necessary if tests have to be repeated. Nine samples of modula r heating units are necessary for the tests of . Additional samples are necessary if the tests of are carried out. Additional samples may be necessary for testing different sizes of hea ting units. !The test of is carried out on the same sample as that used for the test of . Two samples of the additional layer of material, of sufficient size to cover the heating unit, are required if the test of is carried out. Addition: The test of is carried out after the test of . Heating units intended to be installed in walls above a height of 2,3 m are subjected to the tests for installation in ceilings. Addition: Thermostats sensitive to room air temperature or outdoor air temperature are short circuited. However, the thermostat is not short circuited if it can be set so that it does not cycle. NOTE 101 For electronic controls, it may be necessary to render the sensing elements inoperative instead of short circuiting the thermostat. Addition: However, for flexible sheet heating elements that are cut on site, the tests are carried out after connecting the supply leads and protecting the edges in accordance with the instructions. Page 11 BS EN 60335296:2020+A2:2020 6 Classification This clause of Part 1 is applicable except as follows. Addition: Heating units need not be classified. However, if a heating unit is classified, the relevant requirements apply. Addition: Heating units for installation in a floor of concrete or similar material shall be at least IPX7. Other heating units shall be at least IPX1. 7 Marking and instructions This clause of Part 1 is applicable except as follows. Modification: Instead of the marking of rated power input or rated current the following applies: – heating units shall be marked with their rated power input。 – flexible sheet heating elements without connection between adjacent elements shall be individually marked with their rated power input。 – other flexible sheet heating elements shall be marked with their rated power input per metre length. Flexible sheet heating elements shall be marked with their maximum current if – the current can vary depending on the length of the heating element。 – other flexible sheet heating elements can be supplied through them. Addition: Flexible sheet heating elements shall be marked with – the indication of orientation, unless heating units are symmetrical。 – the intended installation (ceilings, walls or floors)。 – the heating mode (direct heating or storage heating), unless intended for both modes. If the heating unit is only intended for application in floors of concrete or similar materials, it shall be marked accordingly. !Text deleted The marking shall be repeated at least once every 0,5 m of the heating element or on every section that can be cut to form a heating unit. Flexible sheet heating elements that can be cut on site and have to be cut at specified places shall be marked appropriately. Page 12 BS EN 60335296:2020+A2:2020 ! Addition: .…… … . Direct ceiling heating … … … .. Direct floor heating … … … .. Floor storage heating … … … .. Installation in concrete These symbols are information signs and, except for the colours, the rules of A 2 ISO 38641 A 2 apply. Addition: Instructions shall be provided. They shall include a) an explanation of the marking and sym bols, if necessary。 b) information for incorporating the heating units into the building, in particular the following: – precautions to be taken to avoid damage during installation, such as dropping sharp objects or stepping on the heating unit, or careless pouring of concrete。 – dimensions and distances to be taken into account。 – a statement that the heating units have to be separated from other heat sources such as luminaires and chimneys。 – description of the fixing areas of the heating unit。 – guidance on how to avoid air gaps between the heating element and the screed of concrete floors。 – guidance on how to avoid damage to a heating element and its terminations in timber constructions due to relative movement after installation。 – a warning against incorporating heating units below a height of 2,3 m into walls or into ceilings inclined at less than 45176。 to the vertical。 – the lowest ambient temperature at which heating units may be installed。 – the minimum radius for bending the heating element, if applicable. Except for modular heating units, the instructions shall include the following: – precautions to be taken to avoid creasing the heating element。 – a statement that the heating unit is not to be installed on irregular surfaces。 – !a description of the intended orientation and a statement that the heating unit is to be installed in this way (for heating units having nonsymmetric construction). Page 13 BS EN 60335296:2020+A2:2020 c) a statement that the installation is to be in accordance with the national wiring rules. The substance of the following shal