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This European Standard specifies the requirements and tests for the construction, performance, safety and conformity of conversion devices used to determine the energy of fuel gases described in the Table 1, including those of the 1st and 2nd families according to EN 437. The energy conversion device (ECD) considered in this standard consists of an energy calculator (EC) and is associated with the following devices and/or functions: - a volume conversion device (VCD) or a flow computer used as gas meter conversion, either conforming to EN 12405-1, or to prEN 12405-3, for high accuracy measurements; - a calorific value determination device (CVDD). Requirements for type approval tests of the devices, not included in the above-mentioned standards are described in appropriate annexes specified in Table 6. For the purpose of this European Standard, the term "volume conversion devices" (VCDs) includes flow computers (FCs). A single calculator may undertake the volume conversion functions for different metering lines.

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.