Brennere. Kjeler

Komité: CEN/TC 113 (Heat pumps and air conditioning units)
Opprinnelse:
Sluttdato: 11. jun 2020
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This European Standard applies to hydronic fan coil units (FCU) as factory-made single assemblies which provide the functions of cooling and/or heating but do not include the source of cooling or heating. The standard covers both air free delivery and air ducted units with a maximum external static pressure due to duct resistance of 120 Pa max. The standard applies to all types of fan speed control of a fan coil unit (variable speed, multispeed). This standard deals with the cooling and heating functions of the FCU considered as an emitter for cooling/heating of a room/space. It does not cover any ventilation function of the unit. If the FCU can also provide fresh air, this function is not considered and the fresh air inlet closed during testing. This European Standard provides a method for the determination of the thermal performance of fan coil units in standard conditions, for the use with hot or chilled water or water mixtures. The test procedures given in this standard may additionally be used for determining performance at other conditions. It also provides the method for the determination of the air flow rate supplied by the fan coil unit. The standard does not cover the rating of heating or cooling from direct expansion coils or heating from electric resistance elements. The standard does not cover acoustic performance of fan coil units which is dealt with in EN 16583. It is not the purpose of this standard to specify the tests used for production or field testing. NOTE For the purpose of remaining clauses, the term “unit” is used to mean “fan coil unit” as defined in 3.1.
Emner: Gassbrennere
Komité: CEN/TC 58 (Safety and control devices for burners and appliances burning gaseous or liquid fuels)
Opprinnelse:
Sluttdato: 9. jul 2020
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This document specifies the safety, construction and performance requirements for mechanical thermostats intended for use with gas appliances and similar use, hereafter referred to as ‘thermostats’. This document applies to thermostats with declared maximum inlet pressures up to and including 50 kPa (500 mbar) of nominal connection sizes up to and including DN 50 for use with one or more fuel gases in accordance with EN 437. This document applies to thermostats controlling the gas flow directly or indirectly through an integral gas valve. This document only applies to thermostats used with gas appliances which are not installed in the open air. Thermostats dealt with in this document are intended for control functions. This document is not applicable to: a) the thermocouple; b) controls which use auxiliary energy (e.g. electrical energy supplied externally); c) an assessment of the control regarding Performance Level (PL) and Safety Integrity Level (SIL).