Amendment 1 - Electric room heating - Underfloor heating - Performance characteristics - Definitions, method of testing, sizing and formula symbols

Amendement 1 - Chauffage électrique de locaux, chauffage par le sol, caractéristiques de performance - Définitions, méthode d’essai, calibrage et symboles de formule

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Published
Publication Date
30-Sep-2021
Current Stage
PPUB - Publication issued
Start Date
01-Oct-2021
Completion Date
04-Nov-2021
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Standard
IEC 62999:2016/AMD1:2021 - Amendment 1 - Electric room heating - Underfloor heating - Performance characteristics - Definitions, method of testing, sizing and formula symbols
English and French language
29 pages
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IEC 62999 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Electric room heating – Underfloor heating – Performance characteristics –
Definitions, method of testing, sizing and formula symbols

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

IEC 62999:2016-02/AMD1:2021-10(en-fr)

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IEC 62999 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Electric room heating – Underfloor heating – Performance characteristics –

Definitions, method of testing, sizing and formula symbols

Chauffage électrique de locaux – Chauffage par le sol – Caractéristiques de

performance – Définitions, méthode d'essai, calibrage et symboles de formule

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.100.10 ISBN 978-2-8322-1033-9

– 2 – IEC 62999:2016/AMD1:2021
© IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRIC ROOM HEATING – UNDERFLOOR HEATING –
PERFORMANCE CHARACTERISTICS – DEFINITIONS,
METHOD OF TESTING, SIZING AND FORMULA SYMBOLS

AMENDMENT 1
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). 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. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to IEC 62999:2016 has been prepared by subcommittee 59C: Electrical heating
appliances for household and similar purposes, of IEC technical committee 59: Performance of
household and similar electrical appliances.
The text of this amendment is based on the following documents:
CDV Report on voting
59C/250/CDV 59C/263/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Amendment is English.

© IEC 2021
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications/.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
___________
1 Scope
Add the following text at the end of the existing clause:
"Annexes D and E are added for information purposes about performance testing according to
the European Commission Regulation (EU) 2015/1188."
Addition of the following annexes:

– 4 – IEC 62999:2016/AMD1:2021
© IEC 2021
Annex D
(informative)
Complete 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 IEC 60675. The underfloor heating
power is 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
setback 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

© IEC 2021
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
P
nom
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
P
min
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
P
max,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

el
sb
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
Note 1 to entry: 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 can 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

el
max
auxiliary energy consumed at nominal heat output

– 6 – IEC 62999:2016/AMD1:2021
© IEC 2021
Note 1 to entry: This value is zero for electric local space heaters. All electric power consumption is included in the
nominal heat output (P )
nom
D.2.16
auxiliary electricity consumption at minimum heat output
el
min
auxiliary energy consumed at minimum heat output
Note 1 to entry: This value is zero for electric local space heaters. All electric power consumption is included in the
minimal heat output (P ).
min
D.2.17
heater with single stage heat output
product that is not equipped with a room temperature control and therefore 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
heater with two or more manual stages
product that is not equipped with a room temperature control but with a possibility to manually
vary the heat output and therefore 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
heater with mechanical thermostat room temperature control
product that is equipped with a non-electronic device that allows it 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
heater with electronic room temperature control
product that is equipped with an electronic device, either integrated or external, that allows it
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
heater with electronic room temperature control plus day timer
product that is equipped with an electronic device, either integrated or external, that allows it
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-
hour timer interval
D.2.22
heater with electronic room temperature control plus week timer
product that is equipped with an electronic device, either integrated or external, that allows it
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
Note 1 to entry: During the 7-day period, the settings must allow a variation on a day-to-day basis.
D.2.23
heater with room temperature control, with presence detection
product that 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
© IEC 2021
D.2.24
heater with room temperature control, with open window detection
product that is equipped with an electronic device, either integrated or external, that reduces
the heat output when a window or door has been opened
Note 1 to entry: 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
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
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
product equipped with an electronic device, either integrated or external, that measures air and
radiant temperature
D.2.29
intended for outdoor use
suitable for safe operation outside enclosed spaces, including possible use in outdoor
conditions
D.2.30
seasonal space heating energy efficiency

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 %
Note 1 to entry: 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
fraction of one period in which the system is supplying power to the heating element
Note 1 to entry: 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
lapse of time between the initiation of a defined temperature level and the actual achievement
of the temperature level
Note 1 to entry: 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.

– 8 – IEC 62999:2016/AMD1:2021
© IEC 2021
D.3 Requirements to comply with functions according to Commission
Regulation (EU) 2015/1188
D.3.1 General
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.3.2 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.3.3 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.3.4 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.3.5 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 appliance switched OFF. Then switch the appliance ON and with the
control check that the heat output is turned ON and OFF by the electronic room temperature
control. The room temperature control should switch the heat output ON and OFF at
temperatures either side of the indicated room temperature setpoint. To verify the term
“electronic” the room temperature control should use active electronic components to be able
to operate. It will only operate by external power supply, battery or from the mains supply.
(Typical types would be microprocessor controlled thermostats with triac/relay to switch power
ON/OFF.)
D.3.6 Product equipped with electronic room temperature control plus day timer
To check for electronic room temperature control function – see D.3.5. To check for day
timer function – start the test period with the heater in a room where there shall be a continuous
heat demand during the comfort period of ≥ 40 % of nominal heat output. The appliance should
be tested for 2 × 24 h cycle. The device should be programmed according to the user instruction
for one or two setback, frost protection or other state of reduced heat output periods over a
24 h period. The setback, frost protection or other state of reduced heat output period duration
should be 5 h and 7 h and the comfort period a minimum of 4 h. Comfort temperature setpoint
should be in the range 23 °C ± 5 °C. Setback temperature setpoint in the range 4 K ± 1 K lower
to the comfort temperature. The comfort/setback, frost protection or other state of reduced heat
output periods should be registered with a sampling frequency of ≤ 2 min. The room
temperature should be registered with a resolution of ≤ 0,5 °C – sampling frequency ≤ 2 min.
The documentation should state that the room temperature is reduced according to the

© IEC 2021
programmed values during the setback or other state of reduced heat output periods compared
to the comfort periods. Temperature control accuracy is not part of the verification.
D.3.7 Product equipped with electronic room temperature control plus week timer
To check for electronic room temperature control function, see D.3.5. To check for week
timer function – start the test period with the heater in a room where there shall be a
continuously heat demand during the comfort period of ≥ 40 % of nominal heat output. The week
timer function should be tested for 7 × 24 h cycle. The device should be programmed according
to the user instruction for one or two setback, frost protection or other state of reduced heat
output periods over one 24 h period. The setback, frost protection or other state of reduced
heat output period duration should be between 5 h and 7 h and the comfort period a minimum
of 4 h. Comfort temperature setpoint should be in the range 23 °C ± 5 °C. Setback temperature
setpoint in the range 4 K ± 1 K lower to the comfort temperature. The comfort/setback, frost
protection or other state of reduced heat output periods should be registered with a sampling
frequency of ≤ 2 min. The room temperature should be registered with a resolution of ≤ 0,5 °C
-sampling frequency ≤ 2 min. The documentation should state that the room temperature is
reduced according to the programmed values during the setback, frost protection or other state
of reduced heat output periods compared to the comfort periods. Temperature control accuracy
is not part of the verification.
D.3.8 Product equipped with room temperature control, with presence detection
To check for presence detection function, the product should be facing an open space with no
obstacles in front for 3 m or at the maximum distance stated by the manufacturer if less than
3 m. The product in normal operation with no persons in the room should be in setback, frost
protection or other state of reduced heat output. Test presence mode by a person
height ≥ 150 cm dressed in clothing with a value in the range of one clo (see ASHRAE) walking
back and forth at a distance of 3 m from the front of the product to 3 m in both directions from
the centre of the products for 1 min. The product should then operate in comfort mode. After
the person leaves the room the heater should revert to the setback, frost protection or other
state of reduced heat output as defined by the manufacturer.
D.3.9 Product equipped with room temperature control, with open window detection
To check for open window detection function, the three following options are available:
a) Test by mechanical/optical open window detection
Test according to user instruction/documentation. Control for the selected setback temperature
to be activated by mechanical or optical means to simulate the open window. The reduction
level should be adjusted to setback temperature, frost protection or other state of reduced heat
output. The function shall be able to be cancelled manually.
b) Test by thermal open window detection
The appliance to be tested should be running in comfort mode in a surrounding where the
appliance room temperature control is set to 23 °C ± 3 °C (comfort temperature, Ct) until stable
conditions are achieved. The test can be performed in any enclosure / room / cabinet where the
temperature is controlled by the room temperature control. The temperature registered as “Ct”
should be measured as close to the temperature sensor as possible.
To test the open window function, reduce the ambient temperature between 5 K and 10 K below
Ct within 10 min and maintain this reduced temperature for at least 30 min. This could be
achieved by moving the heater from one room/enclosure/cabinet with the room temperature
controller controlling the comfort temperature Ct to another room/enclosure/cabinet with a
temperature between 5 °C and 10 °C below Ct. The appliance should stay in the cooler
room/enclosure/cabinet for at least 30 min. Within 30 min the open window detection should
turn the appliance to a reduced heat output. The duration of this state of reduced heat output
should be minimum 60 min. The function is allowed to be cancelled manually.

– 10 – IEC 62999:2016/AMD1:2021
© IEC 2021
The Ct temperature, the following reduced temperature and the heat output should be recorded
throughout the test duration to verify that the conditions are according to the criteria.
c) Test by thermal open window detection (in a climatic test room)
The test is operated in the climatic test room A or B (Annex E).
The two air ventilation inlets located at the centre over the window are blocked.
The two air ventilation inlets located at the extreme positions over the window are replaced by
ventilation ducts of a cross section from 55 mm × 220 mm going down along the window to its
lowest part. The cold climate temperature T is −5 °C ± 0,5 °C.
F
The temperature set point of the heater is 19 °C.
At the beginning of the test, the air exchange rate is of 0 volume/h. The heater is in comfort
mode. The heater is installed according to the installation specifications (horizontal heaters
below the window, vertical heaters on the wall next to the window) until the climatic conditions
are stabilized in the room. The simulation of an opened window is achieved by stepping up the
air exchange rate from 0 volume/h to 4 volumes/h.
The opened window detection is effective if within 15 min the heater goes into setback, frost
protection or other state of reduced heat output mode. The function is allowed to be cancelled
manually.
D.3.10 Product equipped with distance control option
Test the distance control function according to user instruction/documentation. The function
should allow for changing the settings or operation mode.
The function of the distance control can be verified by checking the changes with the display
indications – if a display is available. If no display is available, at least one function shall be
verified by test, e.g. the change to setback function as in D.3.6 or D.3.7.
D.3.11 Product equipped with adaptive start control
Test the function adaptive start control according to user instruction/documentation. The
function is tested in a room with the heater thermostat working between 50 % and 60 % Duty
Cycle during periods of comfort. Comfort temperature is set to 23 °C ± 3 °C until stable
conditions are achieved. This temperature is the reference comfort temperature Ct.
Activate a setback period of 7 −2/+0 h per 24 h with a setback of 4 °C ± 1 °C. The comfort
period being 17 +2/-0 h. With the adaptive start control activated – let the heater room
temperature controller work during 7 × 24 h periods of comfort and setback cycles. After the
latest setback period is finished, the comfort temperature Ct should be reached within ± 45 min
deviation to the time target – with a maximal difference of ± 1 K from the reference comfort
temperature, Ct. If the target temperature above is reached before the 7 days, the test can be
stopped. The temperature should be registered with a sampling frequency of ≤ 2 min.
D.3.12 Product equipped with working time limitation
Test the working time limitation function according to user instruction/documentation. The
function is tested by activating the product and measure the duration of time until the automatic
deactivation.
D.3.13 Product equipped with black bulb sensor
The test for black bulb function is performed in a room with temperature of 20 °C ± 4 °C. The
black bulb sensor should be positioned in the centre of the radiant heater beam at a distance

© IEC 2021
of between 2 m and 3 m. Temperature control setpoint is above room temperature. The heater
should be turned OFF for ≥ 60 min before the test starts.
To verify the function of black bulb sensor, switch ON the heater and check that the heater
output is switched OFF and ON or modulated as radiation increase / decrease.
D.4 Information provided at point of sale
The following information shall be provided at the point of sale to comply with the ecodesign
requirements:
– nominal heat output;
– minimum heat output;
– maximum heat output;
– auxiliary electricity consumption at nominal heat output;
– auxiliary electricity consumption at minimum heat output;
– auxiliary electricity consumption in standby mode;
– type of heat output/room temperature control;
– other control options.
According to regulation feature:
– heater without regulation;
– heater with single stage heat output;
– heater with adjustable power input;
– heater with regulation airflow (fan heaters only);
– heater with a programmer;
– heater with a mechanical room temperature control;
– heater with an electronic room temperature control;
– heater with an electronic room temperature control plus day timer;
– heater with an electronic room temperature control plus week timer;
– heater with a setback function;
– heater with a presence detection;
– heater with an open window detection;
– heater with an adaptive start control;
– heater with a distance control option;
– heater with frost protection means;
– heater with working time limitation;
– heater with a black bulb sensor.

– 12 – IEC 62999:2016/AMD1:2021
© IEC 2021
Annex E
(informative)
Climatic test room
E.1 Climatic test room A
The climatic test room consists of a test chamber for simulating the indoor temperature and a
refrigerating chamber for simulating the outdoor temperature. The chambers are separated by
a wall, referred to as the exterior wall, as shown in Figure E.1.
The heat demand in the test chamber is created by changing the temperature in the refrigerating
3 3
chamber. The test chamber has a volume between 30 m and 40 m , a length between 3 m and
4 m, a width between 3 m and 4 m and a height between 2,4 m and 2,6 m.
In the exterior wall, there is a window of at least 3 m × 1,5 m having a coefficient of thermal
conductance not more than 3 W/m K. The wall under the window has a height of at least 0,8 m
and has a coefficient of thermal conductance not more than 0,5 W/m K. The remainder of the
exterior wall has a coefficient of thermal conductance not more than 1,0 W/m K. The other
walls, the floor and the ceiling have a coefficient of thermal conductance not more than
0,6 W/m K.
Cold air in the test chamber is supplied from the refrigerating chamber through two inlets placed
symmetrically above the window. The air is returned to the refrigerating chamber at the upper
corners of the exterior wall by means of ducting. The extraction point in the test chamber is on
the wall opposite to the exterior wall at a height not more than 0,4 m above the floor.
The air exchange between the refrigerating chamber and the test chamber is approximately one
test chamber volume per hour.
The refrigerating chamber is to be capable of creating a heat-loss through the exterior wall of
at least 1 000 W.
The ambient temperature surrounding the climatic test room is to be within 2 K of the mean
temperature of the test chamber when setting the room temperature control.
The heater is placed in the test chamber against the wall, below the centre of the window,
according to the instructions. If the heater is too high to be placed below the window, it is placed
on one of the adjacent walls with its centre at a distance of 2 m from the exterior wall, so that
the side of the heater containing the room temperature control is closer to the exterior wall. No
heat source other than the appliance under test is to be in the test room.
The temperature of the test chamber is measured by means of a thermocouple placed inside a
thin-wall black globe having a diameter of approximately 10 cm. The globe is located centrally
at a distance of 2 m from the exterior wall and at a height of 1,2 m above the floor. The recording
instrument is located outside the test chamber.

© IEC 2021
E.2 Climatic test room B
This room is of similar construction to test room A with the following differences:
Climatic test room B
Maximum thermal conductance of
6 W/m K
window
Maximum thermal conductance of
0,7 W/m K
wall under window
Floor construction Minimum thickness 400 mm, consisting of concrete
slab such that the complete room is quasi-adiabatic
Air exchange between refrigerating 1 test chamber volume per hour for appliances having
chamber and test chamber a rated power of 1000 W or less.
4 test chamber volumes per hour for appliances
having a rated power of greater than 1 000 W

Dimensions in metres
Figure E.1 – Example of a climatic test room

– 14 – IEC 62999:2016/AMD1:2021
© IEC 2021
Bibliography
Addition:
IEC 60675, Household electric direct-acting room heaters – Methods for measuring
performance
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
ASHRAE Standard 55 – 2017, Thermal Environmental Conditions for Human Occupancy

___________
– 16 – IEC 62999:2016/AMD1:2021
© IEC 2020
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
CHAUFFAGE ÉLECTRIQUE DE LOCAUX – CHAUFFAGE PAR LE SOL –
CARACTÉRISTIQUES DE PERFORMANCE – DÉFINITIONS,
MÉTHODE D'ESSAI, CALIBRAGE ET SYMBOLES DE FORMULE

AMENDEMENT 1
AVANT-PROPOS
1) La Commission Electrotechnique Internationale (IEC) est une organisation mondiale de normalisation composée
de l'ensemble des comités électrotechniques nationaux (Comités nationaux de l'IEC). L'IEC a pour objet de
favoriser la coopération internationale pour toutes les questions de normalisation dans les domaines de
l'électricité et de l'électronique. A cet effet, l'IEC – entre autres activités – publie des Normes internationales,
des Spécifications techniques, des Rapports techniques, des Spécifications accessibles au public (PAS) et des
Guides (ci-après dénommés "Publication(s) de l'IEC"). Leur élaboration est confiée à des comités d'études, aux
travaux desquels tout Comité national intéressé par le sujet traité peut participer. Les organisations
internationales, gouvernementales et non gouvernementales, en liaison avec l'IEC, participent également aux
travaux. L'IEC collabore étroitement avec l'Organisation Internationale de Normalisation (ISO), selon des
conditions fixées par accord entre les deux organisations.
2) Les décisions ou accords officiels de l'IEC concernant les questions techniques représentent, dans la mesure du
possible, un accord international sur les sujets étudiés, étant donné que les Comités nationaux de l'IEC intéressés
sont représentés dans chaque comité d'études.
3) Les Publications de l'IEC se présentent sous la forme de recommandations internationales et sont agréées
comme telles par les Comités nationaux de l'IEC. Tous les efforts raisonnables sont entrepris afin que l’IEC
s'assure de l'exactitude du contenu technique de ses publications; l’IEC ne peut pas être tenue responsable de
l'éventuelle mauvaise utilisation ou interprétation qui en est faite par un quelconque utilisateur final.
4) Dans le but d'encourager l'uniformité internationale, les Comités nationaux de l'IEC s'engagent, dans toute la
mesure possible, à appliquer de façon transparente les Publications de l'IEC dans leurs publications nationales
et régionales. Toutes divergences entre toutes Publications de l'IEC et toutes publications nationales ou
régionales correspondantes doivent être indiquées en termes clairs dans ces dernières.
5) L'IEC elle-même ne fournit aucune attestation de conformité. Des organismes de certification indépendants
fournissent des services d'évaluation de conformité et, dans certains secteurs, accèdent aux marques de
conformité de l'IEC. L'IEC n'est responsable d'aucun des services effectués par les organismes de certification
indépendants.
6) Tous les utilisateurs doivent s'assurer qu'ils sont en possession de la dernière édition de cette publication.
7) Aucune responsabilité ne doit être imputée à l'IEC, à ses administrateurs, employés, auxiliaires ou mandataires,
y compris ses experts particuliers et les membres de ses comités d'études et des Comités nationaux de l'IEC,
pour tout préjudice causé en cas de dommages corporels et matériels, ou de tout autre dommage de quelque
nature que ce soit, directe ou indirecte, ou pour supporter les coûts (y compris les frais de justice) et les dépenses
découlant de la publication ou de l'utilisation de cette Publication de l'IEC ou de toute autre Publication de l'IEC,
ou au crédit qui lui est accordé.
8) L'attention est attirée sur les références normatives citées dans cette publication. L'utilisation de publications
référencées est obligatoire pour une application correcte de la présente publication.
9) L’attention est attirée sur le fait que certains des éléments du présent document de l'IEC peuvent faire l’objet de
droits de brevet. L'IEC ne saurait être tenue pour responsable de ne pas avoir identifié de tels droits de brevets.
L'Amendement 1 à l'IEC 62999:2016 a été établi par le sous-comité 59C: Appareils de
chauffage électrique à usage domestique et similaire, du comité d'études 59 de l'IEC: Aptitude
à la fonction des appareils électrodomestiques et analogues.

© IEC 2021
Le texte de cet Amendement est issu des documents suivants:
CDV Rapport de vote
59C/250/CDV 59C/263/RVC
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à son approbation.
La langue employée pour l'élaboration de cet Amendement est l'anglais.
Ce document a été rédigé selon les Directives ISO/IEC, Partie 2, il a été développé selon les
Directives ISO/IEC, Partie 1 et les Directives ISO/IEC, Supplément IEC, disponibles sous
www.iec.ch/members_experts/refdocs. Les principaux types de documents développés par
l'IEC sont décrits plus en détail sous www.iec.ch/standardsdev/publications/.
Le comité a décidé que le contenu de ce document ne sera pas modifié avant la date de stabilité
indiquée sur le site web de l'IEC sous webstore.iec.ch dans les données relatives au document
recherché. A cette date, le document sera
• reconduit,
• supprimé,
• remplacé par une édition révisée, ou
• amendé.
___________
1 Domaine d'application
A la fin de l'article , ajouter le texte suivant:
"Les Annexes D et E ont été ajoutées à titre d'information pour les essais d'aptitude à la
...

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