EN 50559:2013/A1:2020

Electric room heating, underfloor heating, characteristic of performance - Definitions, method of testing, sizing and formula symbols

This European Standard applies to electrical underfloor heating of dwellings and all other buildings whose use corresponds to dwellings or is at least similar, having a maximum load bearing in use of 4 kN/m². This European Standard defines the main characteristics of electrical underfloor heating and establishes the method of testing of these characteristics as information for the user. This European Standard does not deal with: - installation and safety requirements; DIN VDE 0100-723.

Elektrische Raumheizung, Fußbodenheizung, Charakteristika der Gebrauchstauglichkeit - Definitionen, Prüfverfahren, Dimensionierung und Formelzeichen

Diese Norm gilt für elektrische Fußbodenheizungen für Wohngebäude und alle anderen Gebäude, deren Benutzung der von Wohngebäuden entspricht oder zumindest ähnlich ist, mit einer maximalen Verkehrslast von 4 kN/m2. Diese Norm definiert die Haupteigenschaften von elektrischen Fußbodenheizungen und legt die Prüfverfahren für diese Eigenschaften zur Information der Benutzer fest. Diese Norm behandelt keine - Errichtungs- und Sicherheitsanforderungen; - DIN VDE 0100-723.

Chauffage électrique de locaux - Chauffage par le sol - Caractéristiques de performance - Définitions, méthode d'essai, calibrage et symboles de formule

Električno ogrevanje prostorov, talno ogrevanje, značilne lastnosti - Definicije, metode preskušanja, dimenzioniranje in simboli formul - Dopolnilo A1

General Information

• Status: Published
• Publication Date: 23-Apr-2020
• ICS: 97.100.10 - Electric heaters
• Technical Committee: CLC/TC 59X - Consumer information related to household electrical appliances
• Drafting Committee: CLC/TC 59X/WG 12 - Heating appliances
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 24-Apr-2020
• Completion Date: 24-Apr-2020
• Directive: 2015/1188 - Commission Regulation (EU) 2015/1188 of 28 April 2015 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for local space heaters
• Mandate: M/550 - [C(2016) 7772 final] Ecodesign and energy labelling of local space heaters
• Ref Project: SIST EN 50559:2013/A1:2020 - Electric room heating, underfloor heating, characteristic of performance - Definitions, method of testing, sizing and formula symbols

Relations

• Amends: EN 50559:2013 - Electric room heating, underfloor heating, characteristics of performance - Definitions, method of testing, sizing and formula symbols
• Effective Date: 30-Oct-2018

Overview

EN 50559:2013/A1:2020 (CLC) is the European standard for electric room heating - underfloor heating focusing on performance characteristics: definitions, method of testing, sizing and formula symbols. Prepared by CLC/TC 59X, this amendment (A1) updates EN 50559:2013 and adds normative annexes (D, E, ZZ) to support performance testing in line with Commission Regulation (EU) 2015/1188. The scope covers electrical underfloor heating for dwellings and similar buildings with a maximum load bearing in use of 4 kN/m². It does not cover installation or safety requirements (see DIN VDE 0100-723).

Key topics and technical requirements

• Definitions and terminology for underfloor heating components and control functions (mechanical/electronic thermostats, day/week timers, adaptive start, presence/open-window detection, black-bulb sensors).
• Performance metrics including nominal heat output (Pnom), minimum/maximum heat outputs (Pmin, Pmax,c), energy ratio, average room temperature, amplitude, drift, and seasonal space heating energy efficiency (ηs) as defined for EU regulation compliance.
• Method of testing (Annex D): test-room conditions (recommended parquet floor covering or an equivalent heat source), measurement sampling frequencies, duty cycle and period definitions, and functional verification procedures for control types.
• Sizing and formula symbols: standardized symbols and sizing approaches for consistent specification of underfloor heating power and outputs (used in product datasheets and performance declarations).
• Standby and auxiliary consumption definitions and measurement rules; guidance for products with or without standby modes.

Applications and who uses this standard

EN 50559:2013/A1:2020 is practical for:

• Manufacturers of electric underfloor heating systems for product design, testing, and datasheet declarations.
• Test laboratories and conformity assessment bodies performing performance verification and compliance with Commission Regulation (EU) 2015/1188.
• Architects, HVAC designers, and specifiers selecting or sizing electric underfloor heating for dwellings and similar buildings.
• Energy assessors and regulators evaluating seasonal energy efficiency and compliance documentation.
• Product documentation writers who need standardized formula symbols and test-method descriptions.

Related standards

• EN 50559:2013 (original)
• Commission Regulation (EU) 2015/1188 (performance testing requirements referenced in Annex ZZ)
• Installation/safety reference: DIN VDE 0100-723 (installation and safety not covered by EN 50559)

EN 50559:2013/A1:2020 is essential for consistent, comparable performance data for electric underfloor heating, aiding compliance, product selection, and accurate sizing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2020
Električno ogrevanje prostorov, talno ogrevanje, značilne lastnosti - Definicije,
metode preskušanja, dimenzioniranje in simboli formul - Dopolnilo A1
Electric room heating, underfloor heating, characteristic of performance - Definitions,
method of testing, sizing and formula symbols
Elektrische Raumheizung, Fußbodenheizung, Charakteristika der Gebrauchstauglichkeit
- Definitionen, Testmethoden, Dimensionierung und Formelsymbole
Chauffage électrique de locaux - Chauffage par le sol - Caractéristiques de performance
- Définitions, méthode d'essai, calibrage et symboles de formule
Ta slovenski standard je istoveten z: EN 50559:2013/A1:2020
ICS:
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
97.100.10 Električni grelniki Electric heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50559:2013/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2020
ICS 97.100.10
English Version
Electric room heating, underfloor heating, characteristic of
performance - Definitions, method of testing, sizing and formula
symbols
Chauffage électrique de locaux, chauffage par le sol, Elektrische Raumheizung, Fußbodenheizung,
caractéristiques de performance - Définitions, méthode Charakteristika der Gebrauchstauglichkeit - Definitionen,
d’essai, calibrage et symboles de formule Testmethoden, Dimensionierung und Formelsymbole
This amendment A1 modifies the European Standard EN 50559:2013; it was approved by CENELEC on 2020-03-18. CENELEC members
are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment the status of a
national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as
the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50559:2013/A1:2020 E

Contents Page
European foreword . 3
1 Modification to the Introduction . 4
2 Addition of Annexes D, E and ZZ . 4
3 Modifications to the Bibliography . 14

European foreword
This document (EN 50559:2013/A1:2020) has been prepared by CLC/TC 59X “Performance of household
and similar electrical appliances”.
The following dates are fixed:
• latest date by which this document has (dop) 2021-03-18
to be implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2023-03-18
standards conflicting with this document
have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission and
the European Free Trade Association, and supports essential requirements of EU Directive 2015/1188.
For the relationship with EU Directive 2015/1188 see informative Annex ZZ, which is an integral part of this
document.
1 Modification to the Introduction
Addition:
"Annexes D, E and ZZ are added for the purpose of performance testing according to Commission Regulation
(EU) 2015/1188."
2 Addition of Annexes D, E and ZZ
Addition of the following annexes:
"
Annex D
(normative)
Performance test according to Commission Regulation (EU) 2015/1188
D.1 Test conditions
The control device should be installed according to the manufacturer specification.
The test room could be according to specification set out in EN 60675. The underfloor heating power
according to the manufacturer specification. Recommended floor covering is parquet flooring.
An option is to test in any space that requires a heat demand sufficient to demonstrate the functions to be
tested. To facilitate functional testing, underfloor heating could be replaced by another heat source e.g.
convector heater with the power equal to the power of any underfloor heating that would have been installed
in the actual space. Floor covering could be parquet flooring or any covering defined by the manufacturer.
(Recommendation for test conditions could differ from the installation manual).
D.2 Definitions
For the purpose of Annex D the following definitions apply.
D.2.1
room temperature control
mechanical or electronic device, sensitive to the room temperature and adjustable by the user
D.2.2
programmer
control for regulating the room temperature according to a programmed preset by the user and which is
incorporated in the heater
D.2.3
set-back function device
device function which allows the room temperature to be maintained at a lower value than the pre-set
(comfort) temperature without changing the setting of the room temperature control
D.2.4
frost protection means
means which allows the room temperature to be maintained at a value of 7 °C ± 3 °C
Note 1 to entry: The means may be a particular setting of the room temperature control.
D.2.5
rated power input
power input assigned to the heater by the manufacturer
D.2.6
energy ratio
ratio between the energy consumption during a representative period of operation and the product of the
rated power input and this period
D.2.7
average room temperature
arithmetic average of the maximum and minimum room temperatures for a setting of the room temperature
control
D.2.8
amplitude
difference between the maximum and the minimum room temperatures for a setting of the room temperature
control
D.2.9
drift
difference between the average room temperatures obtained at different energy ratios for a setting of the
room temperature control
D.2.10
nominal heat output
Pnom
heat output of a local space heater comprising both direct heat output and indirect heat output (where
applicable), when operating at the setting for the maximum heat output that can be maintained over an
extended period as declared by the manufacturer, expressed in “x,x kW
D.2.11
minimum heat output (indicative)
Pmin
heat output of a local space heater comprising both direct heat output and indirect heat output (where
applicable), when operating at setting of the lowest heat output, as declared by the manufacturer, expressed
in x,x/N.A. kW
D.2.12
maximum continuous heat output
Pmax,c
declared heat output of an electric local space heater when operating at the setting for the maximum heat
output that can be maintained continuously over an extended period, as declared by the manufacturer,
expressed in x,x kW
D.2.13
electric power requirement in standby mode
elsb
electric power consumption of the product while in standby mode, expressed in x,xxx kW
Note 1 to entry: This is only applicable if the product has a “standby mode”. For electric local space heaters without
a standby mode the value is zero.
D.2.14
standby mode
state of the product where the heating function has been deactivated without disconnection from mains or
switching power off. Independent from external conditions (room temperature, time, or control signals) the
unit will not start heating; to resume the heating function a (manual) reactivation by the user is required. In
standby mode only the following functions are provided, which may persist for an indefinite time:
— reactivation function, or reactivation function and only an indication of enabled reactivation function,
and/or
— information or status display
D.2.15
auxiliary electricity consumption – at nominal heat output
elmax
this value is zero for electric local space heaters. All electric power consumption is included in the nominal
heat output (Pnom)
D.2.16
auxiliary electricity consumption – at minimum heat output
elmin
this value is zero for electric local space heaters. All electric power consumption is included in the minimal
heat output (Pmin)
D.2.17
single stage heat output, no room temperature control
means the product is not capable of varying its heat output automatically and that no feedback of room
temperature is present to adapt the heat output automatically
D.2.18
two or more manual stages, no room temperature control
product is capable of varying its heat output manually by two or more levels of heat output and is not equipped
with a device that automatically regulates the heat output in relation to a desired indoor temperature
D.2.19
mechanical thermostat room temperature control
product is equipped with a non-electronic device that allows the product to automatically vary its heat output
over a certain time period, in relation to a certain required level of indoor heating comfort
Note 1 to entry: Varying the heat output can be achieved by variable intermittent switching of the power.
D.2.20
electronic room temperature control
product is equipped with an electronic device, either integrated or external, that allows the product to
automatically vary its heat output over a certain time period, in relation to a certain required level of indoor
heating comfort;
Note 1 to entry: Varying the heat output can be achieved by variable intermittent switching of the power.
D.2.21
electronic room temperature control plus day timer
product is equipped with an electronic device, either integrated or external, that allows the product to
automatically vary its heat output over a certain time period, in relation to a certain required level of indoor
heating comfort, and allows the setting of timing and temperature level for a 24-h timer interval
D.2.22
electronic room temperature control plus week timer
product is equipped with an electronic device, either integrated or external, that allows the product to
automatically vary its heat output over a certain time period, in relation to a certain required level of indoor
heating comfort, and allows the setting of timing and temperature levels for a full week; during the 7-day
period the settings must allow a variation on a day-to-day basis
D.2.23
room temperature control, with presence detection
product is equipped with an electronic device, either integrated or external, that automatically reduces the
set-point for the room temperature when no person is detected in the room
D.2.24
room temperature control, with open window detection
product is equipped with an electronic device, either integrated or external, that reduces the heat output when
a window or door has been opened. Whenever a sensor is used to detect the opening of a window or door,
it can be installed with the product, externally to the product, built into the building structure or as a
combination of those options
D.2.25
distance control option
function that allows remote interaction from outside the building in which the product is installed with the
control of the product
D.2.26
adaptive start control
means the function which predicts and initiates the optimal start of heating up in order to reach the set-point
temperature at the desired time
D.2.27
working time limitation
means the product has a function that automatically deactivates the product after a pre-set period of time
Note 1 to entry: The heater needs an active manual action or from external transmitted signal to be able to start with
heating again.
D.2.28
black bulb sensor
means the product is equipped with an electronic device, either integrated or external, that measures air and
radiant temperature
D.2.29
intended for outdoor use
product is suitable for safe operation outside enclosed spaces, including possible use in outdoor conditions
D.2.30
seasonal space heating energy efficiency
ᶯ s
ratio between the space heating demand, supplied by a local space heater and the annual energy
consumption required to meet this demand, expressed in %; the seasonal space heating energy efficiency is
calculated using the methods described in Annex III of regulation (EU) 2015/1188, taking into account the
definitions and product categories in the standard
D.2.31
period and duty cycle
duty cycle is the fraction of one period in which the system is supplying power to the heating element. Duty
cycle is expressed as % of a period; a period is the time it takes for a system to complete a full cycle; a period
(or full cycle) duration is expressed in the term of min; for electric heaters a period is an active mode to
perform the intended function of a stream of heat accommodated to the varying demand; period duration
could be initiated by an internal clock function integrated in the control device or given by the influence of
ambient temperature and heat demand
D.2.32
transitional period
transitional period is defined as the lapse of time between the initiation of a defined temperature level and the
actual achievement of the temperature level, typical transition periods of indefinite duration occur when the
heat demand change from comfort to setback and setback to comfort levels. Additional heat load to the room,
not initiated by the heater, could also trigger a transitional period of indefinite duration
D.3 Requirements to comply with functions according to Commission Regulation
(EU) 2015/1188
NOTE Functions implemented in electronic controls which are used identically in a family of heaters have to be
tested only for one member of the family.
D.3.1 Product equipped with single stage heat output, no room temperature control
To check the single stage heat output function - switch the control to ON position and check that the appliance
power is equal to the rating plate information. Test all possible positions of the controls to verify that no other
functions are available.
D.3.2 Product equipped with two or more manual stages, no room temperature control
To check for two or more manual stages function - switch the control to the alternative power positions and
check that the appliance power stages are equal to the rating plate or user instruction information. Test all
possible positions of the controls to verify that no other functions are available.
D.3.3 Product equipped with mechanical room temperature control
To check for mechanical room temperature control function - in a room with stable temperature (in the range
23 °C ± 3 °C) the appliance should be allowed to adapt to the temperature for ≥ 60 min with the appliance
switched OFF. Then switch the appliance ON and with the control check that the heat output is turned ON
and OFF by the mechanical thermostat room temperature control. The room temperature control should
switch the heat output ON and OFF at temperatures either side of the indicated room temperature set point.
To verify the term “mechanical” the room temperature control should not depend on any active electronic
components to be able to operate. (Typical mechanical room temperature control types would be
bimetal/capillary-gas/oil/wax.)
D.3.4 Product equipped with electronic room temperature control
To check for electronic room temperature control function - in a room with stable temperature (in the range
23°C ± 3°C) the appliance should be allowed to adapt to the temperature for ≥ 60 min with the
...