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This protocol provides a comprehensive set of messages for conveying encoded binary, analog, and alphanumeric data between devices including, but not limited to:

(a) hardware binary input and output values,

(b) hardware analog input and output values,

(c) software binary and analog values,

(d) text string values,

(e) schedule information,

(f) alarm and event information,

(g) files, and

(h) control logic.

This protocol models each building automation and control computer as a collection of data structures called "objects," the properties of which represent various aspects of the hardware, software, and operation of the device. These objects provide a means of identifying and accessing information without requiring knowledge of the details of the device's internal design or configuration.

This document defines the specifications and test methods and also the classification, marking and energy labelling of gas-fired instantaneous water heaters for sanitary uses, hereafter called “water heaters”. This document applies to water heaters: - of types A, B and C as described at the appropriated clauses; NOTE For more information on the configuration of the types of appliances, see EN 1749:2020. - using one or more combustible gases corresponding to the three gas families and at the pressures stated in accordance with EN 437:2021; - of nominal heat input not exceeding 77 kW based on the gross calorific value (GCV); - with an ignition burner or with direct ignition of the main burner. In this document, the heat inputs are expressed in relation to the net calorific value (Hi). This document does not contain all the requirements necessary for: - boiling water appliances; - appliances intended to be connected to a mechanical means of evacuating the combustion products; - appliances which fulfil a dual role of space heating and heating water for sanitary use. This document only covers water heaters where the fan, if any, is an integral part of the appliance. This document is not intended to cover appliances designed and constructed to burn gas containing toxic components.

This document specifies cybersecurity requirements for new lifts, escalators and moving walks, referred to in this document as “equipment under control (EUC)”, designed in accordance with the ISO 8100 series. It is also applicable with other lift, escalator and moving walk standards that specify similar requirements, and to other lift-related equipment connected to the EUC. This document specifies product and system requirements related to cybersecurity threats in the following lifecycle steps: —   product development (process and product requirements); —   manufacturing; —   installation; —   operation and maintenance; —   decommissioning. This document addresses the roles of product supplier and system integrator as shown in IEC 62443-4-1:2018, Figure 2, for the EUC. This document does not address the role of asset owner as shown in IEC 62443-4-1:2018, Figure 2, but defines requirements for the product supplier and system integrator of the EUC to establish documentation allowing the asset owner, referred to as the “EUC owner” in this document, to achieve and maintain the security of the EUC. This document specifies the minimum cybersecurity requirements for: —   essential functions; —   safety functions; —   alarm functions. This document is applicable to EUCs that are capable of connectivity to external systems such as building networks, cloud services, or service tools. The capability to connectivity can exist through equipment permanently available on site, or equipment temporarily brought to the location during the installation, operation and maintenance, or decommissioning steps. EUC interfaces to external systems and services are in the scope of this document. External systems and services as such are out of the scope of this document. This document does not apply to EUC that are installed before the date of its publication.

This document specifies the general specifications, constructional requirements and common test methods for indirectly heated, unvented (closed) hot water storage tanks of up to 2 000 l volume suitable for connection to a water supply at a pressure between 0,05 MPa and 1,0 MPa (0,5 bar and 10 bar), and fitted with control and safety devices designed to prevent the temperature of the stored drinking water from reaching 95 °C. Whilst storage water heaters intended primarily for direct heating are not covered by this document, it includes the possible provision of backup immersion heaters.

This document specifies requirements and tests for the construction, performance, safety and production of battery powered class 1,5 Capillary Thermal-Mass Flow sensor gas meters (hereinafter referred to as meter(s)). This applies to meters having co-axial single pipe, or two pipe connections, which are used to measure volumes of fuel gases of the 2nd and/or 3rd family, as given in EN 437:2021.

In general, the term “thermal mass flow meters” applies to a flow-measuring device using heat transfer to measure and indicate gas flowrate, as defined in ISO 14511.

NOTE Although the word “mass” is present in the definition of the measurement principle, gas meters covered by this document provide measurement of gas at base conditions of temperature and pressure.

These meters have a maximum working pressure not exceeding 0,5 bar and a maximum flowrate not exceeding 160 m3/h over a minimum ambient temperature range of −10 °C to +40 °C and a gas temperature range as specified in the marking, with a minimum range of 40 °C.

For meters designed for hydrogen measurement, the maximum flowrate is not exceeding 480 m3/h, whilst the other characteristics are as stated above.

This document applies to meters indicating volume at base conditions, which are installed in locations with vibration and shocks of low significance. It applies to meters in:

— closed locations (indoor or outdoor with protection, as specified in the instruction manual) with condensing humidity or with non-condensing humidity;

or, if specified in the marking:

— open locations (outdoor without any covering) both with condensing humidity or with non-condensing humidity;

and in locations with electromagnetic disturbances likely to be found in residential, commercial and light industrial use. For meters which indicate unconverted volume, reference can be made to Annex C.

Unless otherwise stated, all pressures given in this document are gauge pressures.

Requirements for electronic indexes, valves and additional requirements for batteries incorporated in the meter and any other additional functionalities are given in EN 16314:2013.

Unless otherwise stated in a particular test, the tests are carried out on meters that include additional functionality devices, as indicated in the instruction manual.

Clauses 1 to 13 are for design and type testing only.

For meters designed for blended gas and/or hydrogen measurement, refer to Annex E.

This document refers only to hydrogen as specified in ISO 14687:2025 with a purity of type I grade A or better.

Unless otherwise stated, all tests applicable to 2nd and 3rd family gases are applicable also to blended gas and hydrogen.

Mixtures with a hydrogen concentration above 20 % and below 98 % by volume are not covered by this document.