CEN/TC 247/WG 1 - Standalone controls for heating systems

This European Standard applies to electronic equipment which controls electrical heating. In this European Standard, equipments are tested to verify conformity with technical characteristics of the materials given by the manufacturer.
NOTE 1   It describes optimal start-stop heating functions. It does not include controls for storage functions and controls for lowest energy cost by controlling the charging of the heating system.
The particular equipment to which this European Standard applies covers both:
·   stand-alone start optimisers or start-stop optimisers, taking priority to the main controller during periods;
·   controllers which contain an integrated optimum start or an optimum start-stop control function;
·   Electrical equipment which includes this function, may includes other.
NOTE 2   Electrical heating systems able to be controlled by these devices (e.g.: direct heating, mixed heating systems including base and supplement, type of emitters, type of storage heating systems, floor heating�) are indicated in the technical documents of the manufacturer. Instructions to adapt the parameters of devices to the systems to which they apply are indicated in these documents. The optimum start-stop function can be integrated within a main control device such as an outside temperature compensated (OTC) controller. In this case the controller would be expected to meet both EN 12098-3 and this document.
It applies both to adaptive and fixed parameters control functions and sets minimum acceptable standards for functions, performance and documentation.

This work item applies to electronic control equipment for electrical heating systems. The signals can be processed by analogue or digital techniques. This control equipment controls and regulates the distribution and/or the generation of heat in relation to the outside temperature and/or other reference variables (e.g. room temperature, emitter temperature...) and time. Safety requirements on heating systems remain unaffected by this standard. The dynamic behaviour of the actuators is not covered here. The control equipment may or may not be connected to a data network.

This standard applies to electronic equipment which controls heating systems with water as the heating medium and a flow temperature up to 120 °C. The signals can be processed by using either analogue or digital techniques, or both. The particular equipment to which this standard applies covers both :
·   stand-alone start optimisers or start-stop optimisers, taking priority to the main controller during periods.
·   controllers which contain an integrated optimum start or an optimum start-stop control function.
It applies both to adaptive and fixed parameters control functions and sets minimum acceptable standards for functions, performance and documentation.
NOTE   The optimum start-stop function can be integrated within a main control device such as an outside temperature compensated (OTC) controller. In this case the controller would be expected to meet both Part 1 and Part 2 of this standard (see EN 12098-1:1996).
Safety requirements on heating systems and heating control systems remain unaffected by this standard. The actuators and the dynamic behaviour of the valves are not covered in this standard.
This control equipment may or may not be connected to a data network.

This European Standard applies to electronic control equipment for heating systems with water as the heating medium and a flow temperature up to 120 °C. The signals can be processed by using either analogue or digital techniques, or both. This control equipment controls and regulates the distribution and/or the generation of heat in relation to the outside temperature and other reference variables and time. Safety requirements on heating systems remain unaffected by this standard. The dynamic behaviour of the valves and actuators are not covered in this standard.

This European Standard applies to electrical or non electrical temperature control devices which are used to control temperatures within heat generating systems by controlling the supply of energy; it also applies to limiting devices which ensure that the temperature in heat generating systems will not exceed a predefined limit.
This European Standard requires operating values, operating times, and operational sequences associated with the safety of the heat generating system.
This European Standard also applies to controls using NTCs or PTCs thermistors, additional requirements for which are contained in Annex J of EN 60730-2-9.
This European Standard applies to controls with a rated voltage not exceeding 690 V and with a rated current not exceeding 63 A.
This European Standard also applies to manual controls if, electrically and/or mechanically, they form an integral part of automatic controls.
NOTE   Requirements for manually operated switches not forming part of an automatic control are contained in EN 61058 1.
This European Standard does not apply to room thermostats.
1.2   This European Standard does not take into account the response value of an automatic action of the control, if such a response value is dependent upon the method of mounting the control in the heat generating system or equipment, in which case the control should be tested together with the heat generator. Where a response value is of significance for the protection of the user, or surroundings, the value defined in the appropriate household equipment standard or as determined by the manufacturer applies.
1.3   This European Standard applies also to controls incorporating electronic devices, requirements for which are contained in Annex DX.