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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,
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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
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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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 /members_experts/refdocs. The main document types developed by IEC are
described in greater detail at /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
...