M/349 - Feasibility study

This European Standard specifies the requirements and test methods for the construction, safety, fitness
for purpose, rational use of energy and the marking of a micro combined heat and power appliance;
(hereafter referred to as “mCHP appliance”).
This European Standard applies to mCHP appliances of types B22, B23, B32, B33, B52, B53, C1, C3, C42, C43
C52, C53, C62, C63, C82, C83 and C9 based on the classifications of CEN/TR 1749:
– that use one or more supplied gases of the three gas families at the pressures stated in EN 437,
– where the temperature of the heat transfer fluid of the heating system (heating water circuit) does
not exceed 105 ºC during normal operation,
– where the maximum operating pressure in the
- heating water circuit does not exceed 6 bar,
- domestic hot water circuit (if installed) does not exceed 10 bar,
– which are either intended to be installed indoors or outdoors in a partially protected place,
– which are intended to produce hot water either by the instantaneous or storage principle,
– which have a maximum heat input (based on net calorific value) not exceeding 70 kW,
– which are designed for sealed or open water systems.
NOTE 1 For applications where the maximum allowable water temperature exceeds 110 ºC or where volume multiplied by
maximum allowable pressure exceeds 50 bar litres, further requirements may be necessary to comply with the essential
requirements of Directive 97/23/EC (Pressure Equipment Directive (PED)).
NOTE 2 For mCHP appliances with constructions that might not be fully covered by this European Standard or by another specific
standard, the risk associated with the alternative construction will be assessed.
NOTE 3 prEN 13203-4 will specify the assessment of energy consumption for domestic hot water production of gas combined
heat and power appliances (mCHP).
This European Standard does not contain the requirements necessary for appliance capable of producing
electrical energy without using the thermal energy.
This European Standard does not cover all the requirements for mCHP 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 DD).

This European Standard applies to the construction,  the safety, the functional requirements and the test  methods, as well as the classification and the marking  of a fuel cell gas heating appliance, which will be  operated predominantly heat followed, meeting the  following boundary conditions: - maximum heat load  (gas input): 70 kW; - maximum electrical output: 11  kW.

This European Standard specifies the requirements and test methods for the construction, safety, fitness for purpose, rational use of energy and the marking of a micro combined heat and power appliance; (hereafter referred to as “mCHP appliance”). This European Standard applies to mCHP appliances of types B22, B23, B32, B33, B52, B53, C1, C3, C42, C43 C52, C53, C62, C63, C82, C83 and C9 based on the classifications of CEN/TR 1749: – that use one or more supplied gases of the three gas families at the pressures stated in EN 437, – where the temperature of the heat transfer fluid of the heating system (heating water circuit) does not exceed 105 ºC during normal operation, – where the maximum operating pressure in the - heating water circuit does not exceed 6 bar, - domestic hot water circuit (if installed) does not exceed 10 bar, – which are either intended to be installed indoors or outdoors in a partially protected place, – which are intended to produce hot water either by the instantaneous or storage principle, – which have a maximum heat input (based on net calorific value) not exceeding 70 kW, – which are designed for sealed or open water systems. NOTE 1 For applications where the maximum allowable water temperature exceeds 110 ºC or where volume multiplied by maximum allowable pressure exceeds 50 bar litres, further requirements may be necessary to comply with the essential requirements of Directive 97/23/EC (Pressure Equipment Directive (PED)). NOTE 2 For mCHP appliances with constructions that might not be fully covered by this European Standard or by another specific standard, the risk associated with the alternative construction will be assessed. NOTE 3 This EN includes formulae and methods intended to produce values required by implementation measures of the ErP Directive 2009/125/EC and Labelling Directive 2010/30/EU. NOTE 4 EN 13203-4 will specify the assessment of energy consumption for domestic hot water production of gas combined heat and power appliances (mCHP). This European Standard does not contain the requirements necessary for appliance capable of producing electrical energy without using the thermal energy. This European Standard does not cover all the requirements for mCHP 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 DD).

This European Standard applies to the construction, the safety, the functional requirements and the test methods, as well as the classification and the marking of a fuel cell gas heating appliance, which will be operated predominantly heat followed, meeting the following boundary conditions: – maximum heat load (gas input): 70 kW – maximum electrical output: 11 kW. NOTE Due to the fact, that there are national deviations on the maximum electrical output in Europe, this maximum electrical output is independent referring the number of connected phases to the public low voltage grid. – fuel: combustion gas in accordance with EN 437 – maximum heating water temperature: 95 °C (under normal operational conditions) – process pressures in the fuel cell gas appliance: – heating water: max. 6 bar – domestic hot water (if installed): max. 10 bar – device construction: According to the expositions in accordance with CEN/TR 1749, EN 483 or EN 297 (B22, B23, B32, B33, C12, C13, C32, C33, C42, C43, C52, C53, C62, C63, C82, C83) ). This European Standard applies to type testing only. This European Standard does not contain the requirements necessary for appliances for producing electrical energy without thermal energy.