This document applies to small CHP appliance serving as a heating appliance providing both electric power and useful heat with or without a supplementary heat generator providing peak load function. Covered technologies are fuel cell, Internal combustion Engine and Stirling Engine.
This standard applies to small CHP appliances of Type A, Type B22, Type B23, Type B32, Type B33, Type B52, Type B53, Type C1, Type C3, Type C4, Type C5, Type C6, Type C8 and Type C9 as classified in EN 1479 (see Annex F),
– which use one or more combustible gases of the second and third gas families at the pressures stated in EN 437,
– where the temperature of the water heat transfer fluid does not exceed 105 ºC during normal operation,
– where the maximum operating pressure in the
• heating water circuit does not exceed 0,6 MPa,
• domestic hot water circuit (if installed) is a maximum of 1,0 MPa,
– which are intended to be installed in indoor, semi-outdoor or outdoor places, and
– which are intended to produce hot water either by the instantaneous or storage principle.
NOTE 1 For applications where the maximum allowable temperature exceeds 110 ºC or where volume multiplied by maximum allowable pressure exceeds 5,0 MPa ⋅ l, further requirements can be necessary to comply with the essential requirements of Directive 2014/68/EU (Pressure Equipment Directive (PED)).
This standard applies to small CHP appliance that are intended to be permanently connected to the electrical system of the customer (end user). Direct connection to the mains (parallel operation) is also within the scope of this standard.
NOTE 2 Parallel operation is subject to the permission of the local electric power supply utility.
This standard is limited to gas fuelled small CHP appliances that have a heat input based on lower heating value of less than or equal to 70 kW.
This document applies to appliances as shown in Figure 1, where one is an appliance where both the CHP generator and the supplementary heat generator are installed in one enclosure without any partition.
This standard does not have to apply to the supplementary heat generator of small CHP appliances where the CHP generator and the supplementary heat generator are not built in one enclosure, and whose ducts are not common (that is, each appliance has its own dedicated duct system).
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This standard applies to systems with either condensing or non-condensing conditions in the exhaust gas.
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This document specifies the requirements and test methods for the construction, safety, installation, fitness for purpose, rational use of energy, performance measurement, sound power measurement and together with requirements for the marking, and advice on the end of life disposal of a small CHP appliances.
This document does not cover all the requirements for small CHP appliances that are intended to be connected to gas grids where the quality of the distributed gas is likely to vary to a large extent over the lifetime of the appliance (see Annex AA).
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