EN 60675:1995

Household electric direct-acting room heaters - Methods for measuring performance

Applies to electric direct-acting room heaters. They may be portable, stationary, fixed or built-in. It defines the main performance characteristics and the methods for measuring these characteristics. For thermal-storage room heaters, see IEC 60531.

Elektrische Haushalt-Direktheizgeräte - Prüfverfahren zur Bestimmung der Gebrauchseigenschaft

Appareils électrodomestiques de chauffage des locaux à action directe - Méthodes de mesure de l'aptitude à la fonction

S'applique aux appareils électriques de chauffage des locaux à action directe. Ils peuvent être mobiles, fixes, installés à poste fixe ou encastrés. Définit les principales caractéristiques d'aptitude à la fonction et méthodes pour la vérification de ces caractéristiques. Pour les appareils de chauffage des locaux à accumulation, voir CEI 60531.

Household electric direct-acting room heaters - Methods for measuring performance (IEC 675:1994)

Ta standard se uporablja za sobne neposredne grelnike, ki so lahko prenosni, stacionarni, nepremični ali vgradni.
Ne uporablja se za:
– termoakumulacijske grelnike prostorov (IEC 531);
– grelne naprave, vgrajene v zgradbah;
– sisteme centralnega ogrevanja;
– grelnike, povezane s prezračevalnim kanalom;
– tapete, preproge ali draperije, ki vključujejo prilagodljive grelne elemente.
Ta standard določa glavne lastnosti delovanja sobnih neposrednih grelnikov in določa metode za merjenje teh lastnosti z namenom informiranja uporabnikov.
Ta standard ne določa vrednosti lastnosti delovanja.
OPOMBA: Ta standard ne obravnava:
– varnostnih zahtev (IEC 335-2-30);
– zvočnega hrupa ventilacijskih grelnikov (IEC 704-2-2).

General Information

• Status: Published
• Publication Date: 03-Jan-1995
• Withdrawal Date: 31-Jan-1996
• ICS: 97.100 - Domestic, commercial and industrial heating appliances
• Technical Committee: CLC/TC 59X - Consumer information related to household electrical appliances
• Drafting Committee: IEC/SC 59C - IEC_SC_59C
• Parallel Committee: IEC/SC 59C - IEC_SC_59C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 04-Jan-1995
• Completion Date: 04-Jan-1995
• 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 60675:1998 - Household electric direct-acting room heaters - Methods for measuring performance (IEC 675:1994)

Relations

• Amended By: EN 60675:1995/FprAB:2025 - Household electric direct-acting room heaters - Methods for measuring performance
• Effective Date: 10-Oct-2023
• Amended By: EN 60675:1995/A1:1998 - Household electric direct-acting room heaters - Methods for measuring performance
• Effective Date: 29-Jan-2023
• Amended By: EN 60675:1995/A2:2018 - Household electric direct-acting room heaters - Methods for measuring performance
• Effective Date: 10-Oct-2017
• Amended By: EN 60675:1995/A11:2019 - Household electric direct-acting room heaters - Methods for measuring performance
• Effective Date: 03-Oct-2017

Overview

EN 60675:1995 (adopted as CLC/SIST EN 60675:1998) defines standardized methods for measuring the performance of household electric direct-acting room heaters. Based on IEC 675:1994, the standard applies to portable, stationary, fixed or built‑in direct-acting heaters (panel, convector, fan, radiant and visibly‑glowing radiant types). It specifies what to measure and how to test - but does not set pass/fail performance limits or cover safety requirements.

Key topics and technical requirements

• Scope & classification
  • Covers direct‑acting room heaters; excludes thermal‑storage heaters (see IEC 60531) and central/ducted systems.
  • Classifies by heater type (panel, convector, fan, radiant, visibly glowing) and by regulating features (thermostat, programmer, set‑back, frost protection).
• List of measurements
  • Dimensions, mass and supply connection (measurement rounding rules for dimensions and cord length).
  • Temperature rises of air‑outlet grilles and external surfaces (probe contact force 4 N ±1 N; grid sampling rules).
  • Temperature rises of surrounding surfaces (thermocouples on blackened disks; fine‑wire ≤ 0.3 mm; disk 15 mm × 1 mm).
  • Warming‑up time: time to reach 90% of steady temperature rise; steady defined as ≤2 K change within 15 min.
  • Stability of room temperature, set‑back behavior and frost protection (frost protection defined as maintaining 7 °C ±3 °C).
  • Inrush current and effect of radiant heat measurements.
• General test conditions
  • Certain tests performed in a draught‑free room at 23 °C ±2 °C; other tests use an adjustable “climatic test room” (annex A).
  • Positioning rules (corner placement, mounting heights, shelf arrangements) and test setup described for reproducibility.
• Reporting
  • Results given as highest and average temperature rises, warming time (approximate), energy ratio, etc. Test report form provided (annex C).

Applications - who uses EN 60675:1995

• Manufacturers of electric direct‑acting room heaters - for product development and performance data.
• Test laboratories and certification bodies - to run repeatable performance tests.
• Compliance engineers and product managers** - to document declared performance at point of sale.
• Retailers and specifiers - to compare heater performance (warming time, temperature stability, radiant effect).
• R&D teams - to benchmark designs (convector vs radiant vs fan heater).

Related standards

• IEC 675:1994 (original international text)
• IEC 584‑1 (thermocouples reference tables - normative reference)
• Safety and acoustics are outside this standard (see IEC 335‑2‑30 for safety and IEC 704‑2‑2 for fan noise).

Keywords: EN 60675:1995, electric direct-acting room heaters, performance measurement, IEC 675, warming-up time, temperature rise, inrush current, climatic test room, heater classification.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-1998
Household electric direct-acting room heaters - Methods for measuring
performance (IEC 675:1994)
Household electric direct-acting room heaters - Methods for measuring performance (IEC
675:1994)
Elektrische Haushalt-Direktheizgeräte - Prüfverfahren zur Bestimmung der
Gebrauchseigenschaft
Appareils électrodomestiques de chauffage des locaux à action directe - Méthodes de
mesure de l'aptitude à la fonction
Ta slovenski standard je istoveten z: EN 60675:1995
ICS:
97.100.10 (OHNWULþQLJUHOQLNL Electric heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE IEC
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1994-08
Appareils électrodomestiques
de chauffage des locaux à action directe -
Méthodes de mesure de l'aptitude
à la fonction
Household electric direct-acting
room heaters -
Methods for measuring performance
© CEI 1994 Droits de reproduction réservés — Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun pro- any form or by any means, electronic or mechanical,
cédé, électronique ou mécanique, y compris la photocopie et including photocopying and microfilm, without permission
les microfilms, sans l'accord écrit de l'éditeur. in writing from the publisher.
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, Suisse
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission
PRICE CODE S
IEC MeteayHapoAHae 3neKrporexHH4ecKae HOMHCCHA
Pour prix, voir catalogue en vigueur
• •
For price, see current catalogue

675 ©IEC:1994 – 3 –
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
2 Normative reference 7
3 Definitions 9
4 Classification 11
5 List of measurements 13
6 General conditions for measurements 13
7 Dimensions, mass and means of connection to the supply 15
8 Temperature rises of air-outlet grilles and external surfaces 17
9 Temperature rises of su rfaces surrounding the heater 17
10 Warming-up time of the heater 19
11 Stability of room temperature 19
12 Set-back 23
13 Frost protection temperature 23
14 Inrush current 23
15 Effect of radiant heat 25
Figures 26
Annexes
A Climatic test room 29
B Information provided at point of sale 33
C Test report form 35
D Bibliography 41
675©IEC:1994 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
HOUSEHOLD ELECTRIC DIRECT-ACTING ROOM HEATERS -
METHODS FOR MEASURING PERFORMANCE
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
Their preparation is entrusted to technical committees; any IEC National Committee interested in
the subject dealt with may participate in this preparatory work. International, governmental and
non-governmental organizations liaising with the IEC also participate in this preparation. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
condi tions determined by agreement between the two organizations.
2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
They have the form of recommendations for international use published in the form of standards, technical
3)
reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
International standard IEC 675 has been prepared by sub-committee 59C: Heating appliances,
of IEC technical committee 59: Pe rformance of household electrical appliances.
It forms the second edition of IEC 675 and replaces the first edition.
The text of this standard is based on the first edition and the following documents.
DIS Report on voting
59C(CO)51 59C(CO)54
Full information on the voting for the approval of this standard can be found in the repo rt
on voting indicated in the above table.
Annexes B to D are for information only.
Annex A forms an integral part of this standard.
In this standard, the following print types are used:
- test specifications: in italic type
- notes: in small roman type
- other texts: in roman type
Words in bold in the text are defined in clause 3.

675 ©I EC:1994 — 7 —
HOUSEHOLD ELECTRIC DIRECT-ACTING ROOM HEATERS —
METHODS FOR MEASURING PERFORMANCE
1 Scope
This standard applies to electric direct -acting room heaters.
They may be portable,
stationary, fixed, or built-in.
It does not apply to:
— thermal-storage room heaters (IEC 531);
-
heating appliances incorporated in the building structure;
- central heating systems;
—
heaters connected to an air duct;
- wall-paper, carpets or drapes incorporating flexible heating elements.
This standard defines the main performance characteristics of direct-acting room
heaters
and specifies methods for measuring these characteristics, for the information of
users.
This standard does not specify values for performance characteristics.
NOTE - This standard does not deal with:
- safety requirements (IEC 335-2-30);
acoustical noise of fan heaters (IEC 704-2-2).
2 Normative reference
The following normative document contains provisions which, through reference in this
text, constitute provisions of this standard. At the time of publication, the edition indicated
was valid. All normative documents are subject to revision, and parties to agreements
based on this standard are encouraged to investigate the possibility of applying the most
recent edition of the normative document indicated below. Members of IEC and ISO main-
tain registers of currently valid International Standards.
IEC 584-1: 1977,
Thermocouples — Part 1: Reference tables.
NOTE - Informative references (bibliography) are given in annex D.

675 ©I EC:1994 – 9 –
3 Definitions
For the purposes of this standard, the following definitions apply:
3.1
direct -acting room heater: Appliance which converts electrical energy into heat
after a demand for heat has arisen in a room and transfers this heat to the room without
delay.
NOTE — In this standard, a direct-acting room heater
is referred to as a heater.
3.2 panel heater: Heater in which the temperature rise of all surfaces in contact with
the circulating air does not exceed 75 K in normal use.
NOTES
1 Panel heaters may be oil filled.
2 Panel heaters may be in column form.
3.3 convector heater: Heater
in which the temperature rise of at least one non-visible
part in contact with the circulating air exceeds 75 K in normal use. The air is discharged
through one or more outlets by natural convection.
NOTE — "Non-visible part" means that the part cannot be seen from a point situated 2 m in front of the
heater and 1,2 m above the floor when the heater is installed.
3.4 fan heater: Heater
in which the movement of air through it is accelerated by a fan.
3.5 radiant heater: Heater
in which the temperature rise of at least one visible su rface
exceeds 75 K in normal use.
NOTE — The visible surface may be seen through solid material which is transparent to heat radiation.
Materials such as quartz glass are considered to be transparent to heat radiation, while ordinary glass is not.
3.6 visibly glowing radiant heater: Radiant heater in which the heating element is
visible from the outside of the heater and has a temperature of at least 650 °C in normal
use.
3.7 ambient temperature
thermostat: Thermostat, sensitive to the room temperature
and adjustable by the user, with at least the sensing part incorporated in the heater.
programmer:
3.8 Control for regulating the room temperature according to a pro-
gramme preset by the user and which is incorporated in the
heater.
3.9 set-back device: Device which allows the room temperature to be maintained at a
lower value than the pre-set temperature without changing the setting of the
ambient
temperature thermostat.
3.10 frost protection means:
Means which allows the room temperature to be main-
tained at a value of 7 °C ± 3 °C.
NOTE — The means may be a particular setting of the ambient
temperature thermostat.
675 ©IEC:1994 - 11 -
3.11 rated power input: power input assigned to the heater by the manufacturer.
3.12 energy ratio: Ratio between the energy consumption during a representative
period of operation and the product of the rated power input and this period.
3.13 average room temperature: The arithmetic average of the maximum and minimum
room temperatures for a setting of the ambient temperature thermostat.
3.14 amplitude: Difference between the maximum and the minimum room temperatures
for a setting of the ambient temperature thermostat.
3.15 drift: Difference between the average room temperatures obtained at different
ambient temperature thermostat.
energy ratios for a setting of the
4 Classification
4.1 According to type
- panel heater;
convector heater;
-
- fan heater;
radiant heater;
- visibly glowing radiant heater.
The type of heater shall be stated.
NOTES
1 A heater may be a combination of two or more types.
the temperature rise of the relevant surfaces is determined.
2 If there is doubt regarding the type of heater,
Examples of types of heaters are shown in figure 1.
4.2 According to regulating features
- heater without regulation;
heater with adjustable power input;
-
heater with regulated air flow (fan heaters only);
heater with an ambient temperature thermostat;
-
- heater with a programmer;
- heater with a set-back device;
- heater with frost protection means.
If the heater has features such as means for connection to an external control, details are
to be stated.
set-back
NOTE - An example is a heater having means for receiving an external signal for operating the
device.
A heater may have more than one regulating feature.
The regulating features of the heater shall be stated.

675 ©IEC:1994 - 13 -
5 List of measurements
Pe rf
ormance is determined by means of the following measurements:
- dimensions and mass of the heater,
length of the supply cord (clause 7);
NOTE 1 —
This measurement is suitable for all heaters.
-
temperature rises of air-outlet grilles and external surfaces (clause 8);
NOTES
2 The measurement of temperature rises of air-outlet grilles is suitable for convector heaters and fan
heaters.
3 The measurement of temperature rises of external surfaces is suitable for all heaters but is not
applicable to those for mounting at a height above 1,8 m, to the back of wall-mounted heaters and to visibly
glowing radiant heaters.
- temperature rises of surfaces surrounding the heater
(clause 9);
NOTE 4 — This measurement is suitable for all heaters.
-
warming-up time of the heater (clause 10);
NOTE 5 —
This measurement is suitable for all heaters.
-
stability of room temperature (clause 11);
NOTE 6 —
This measurement is suitable for heaters with an ambient temperature thermostat.
- set-back (clause 12);
NOTE 7 — This measurement is suitable for heaters with a set-back device.
- frost protection temperature (clause 13);
NOTE 8 - This measurement is suitable for heaters with frost protection means.
- inrush current (clause 14);
NOTE 9 — This measurement is suitable for all heaters.
-
effect of radiant heat (clause 15);
NOTE 10 —
This measurement is suitable for all heaters except fan heaters and heaters for mounting at a
height above 1,8 m.
The results of these measurements may be given in a test report.
NOTE 11 —
An example of a test report form is shown in annex C.
6 General conditions for measurements
Unless otherwise specified, measurements are made under the following conditions :
Supply voltage:
The heater is supplied at a voltage which gives the rated power input under steady condi-
tions. If a power input range is marked on the heater, the voltage is that giving the mean
value of the range.
NOTES
1 Heaters with PTC heating elements are supplied at rated voltage or at the mean value of the rated
voltage range.
2 If the results obtained by testing the heater as specified are considered to be misleading due to the
national nominal supply voltage, the heater may also be tested at a power input corresponding to the nominal
voltage of the national supply system.

675 © I EC:1994 — 15 —
Adjustment:
Controls to be set by the user are set at the maximum position.
NOTE 3 – The intention is to obtain an energy ratio
of 100 %. If this cannot be obtained due to the ambient
temperature thermostat
cycling, even at the lowest limit of the test room temperature, this thermostat is
short-circuited or otherwise rendered inoperative.
Test rooms:
The tests of clauses 7, 8, 9, 10, 14 and 15 are carried out in a draught-free room in which
the ambient temperature is maintained at 23 °C ± 2 °C.
The tests of clauses 11, 12 and 13 are carried out in a room where the heat losses can be
adjusted. This room is referred to as a "climatic test room" and an example is given in
annex A.
Positioning of the heater:
For the measurement of clauses 8, 9 and 10, the heater is placed in a corner which
consists of two walls, a floor and, if necessary, a ceiling, at right angles. The corner is
made of dull-black painted plywood having a thickness of approximately 20 mm.
The heater is positioned in the corner as follows:
— Portable fan heaters are placed with the back 150 mm from one of the walls and away
from the other wall.
— Other heaters normally placed on a floor are positioned with their back as near as
possible to one of the walls and away from the other wall. However, portable heaters
intended to emit heat in several directions are moved away from the wall by a distance
of 300 mm.
— Heaters normally fixed to a wall are fixed to one of the walls, as near to the other
wall and to the floor as is likely to occur in normal use, unless otherwise stated in
the instructions for installation. A dull-black painted plywood shelf having a thickness of
approximately 20 mm and a depth of 200 mm is fixed over the heater as near as
possible to the top of the heater unless otherwise stated in the instructions.
—
Heaters normally fixed to the ceiling are fixed to the ceiling as near to the walls as
is likely to occur in normal use, unless otherwise stated in the instructions for
installation.
However, built-in heaters are installed according to the instructions for installation, using
dull-black painted plywood approximately 20 mm thick. The heater is installed as close as
possible to a similar dull-black painted floor or ceiling, unless otherwise stated in the
instructions.
7 Dimensions, mass and means of connection to the supply
The overall length, height and depth of the heater, including any knobs, handles and fixing
brackets, are determined.
The dimensions are stated in millimetres, rounded up to the nearest 5 mm.
The mass is stated in kilograms. rounded up to the nearest 0,1 kg.

675 ©IEC:1994 - 17 -
The length between the point of entry of the cord to the
heater
and the entry to the plug or
the end of the outer sheath at the free end of the cord, is determined, unless the heater is
provided with terminals for connection to fixed wiring.
NOTE – It is recorded whether or not a plug is fitted.
The length of the supply cord is stated in metres, rounded down to the nearest m, or
0,05
it is stated that the heater is for connection to fixed wiring.
8 Temperature rises of air-outlet grilles and external surfaces
The temperature rises of air-outlet grilles of
convector heaters and fan heaters are
determined.
The temperature rises of external surfaces are determined except for:
- heaters
for mounting at a height above 1,8 m;
- the back of wall-mounted heaters;
- visibly glowing radiant heaters;
NOTE – The surface of radiant heaters
through which the heating element is visible is considered to be an
external surface and not an air-outlet grille.
The temperature rises are measured by means of the probe of figure 2. The probe is
applied to the surface with a force of 4 N ± 1 N in such a way that the best possible
contact is ensured.
Air-outlet grilles and their surrounds to a distance of 25 mm from the edge of the outlets
are divided into a minimum number of equal rectangles having sides not exceeding 25 mm
in height and 150 mm in length. The probe is applied to the grille as near to the centre of
the rectangles as possible.
Other surfaces are divided into a minimum number of equal rectangles having sides not
exceeding 150 mm. The probe is applied to the centre of the rectangles.
The temperature rise distribution, the highest and the average temperature rises of the
various parts are stated, rounded to the nearest 1 K.
9 Temperatu
...