IEC 60335-2-40:2013/AMD1:2016

IEC 60335-2-40 ®
Edition 5.0 2016-04
INTERNATIONAL
STANDARD
AMENDMENT 1
Household and similar electrical appliances – Safety –
Part 2-40: Particular requirements for electrical heat pumps, air-conditioners
and dehumidifiers
IEC 60335-2-40:2013-12/AMD1:2016-04(en)

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IEC 60335-2-40 ®
Edition 5.0 2016-04
INTERNATIONAL
STANDARD
AMENDMENT 1
Household and similar electrical appliances – Safety –

Part 2-40: Particular requirements for electrical heat pumps, air-conditioners

and dehumidifiers
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 23.120 ISBN 978-2-8322-3311-5

– 2 – IEC 60335-2-40:2013/AMD1:2016

© IEC 2016
FOREWORD
This amendment has been prepared by IEC Subcommittee 61D: Appliances for air-

conditioning for household and similar purposes, of IEC technical committee 61: Safety of

household and similar electrical appliances.

The text of this amendment is based on the following documents:

FDIS Report on voting
61D/333/FDIS 61D/334/RVD
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
NOTE The attention of the National Committees is drawn to the fact that this amendment is intended to make the
information available before a full revision of IEC 60335-2-40 will be launched.

___________
© IEC 2016
1 Scope
Replace the second paragraph by the following:

This part of IEC 60335 deals with the safety of electric heat pumps, including sanitary hot

water heat pumps, air conditioners, and dehumidifiers incorporating motor-compressors

and hydronic fan coil units, their maximum rated voltages being not more than 250 V for

single phase appliances and 600 V for all other appliances. Partial units are within the scope

of this International Standard.

Replace the first sentence in the sixth paragraph by the following:
This standard does not take into account refrigerants other than those classified as A1, A2L,
A2 or A3 under ISO 817 or ANSI/ASHRAE 34.
3 Terms and definitions
3.101
heat pump
Add the following Note 2:
Note 2 to entry: A heat pump can contain a combination of condensing unit or condenser unit and an
evaporating unit or evaporator unit and can be equipped to operate in a reverse cycle mode.
3.103
air conditioner
Add the following Note 3:
Note 3 to entry: An air conditioner can contain a combination of condensing unit or condenser unit and an
evaporating unit or evaporator unit.
Replace the term and definition by the following:
3.120
fan coil
air handling unit
Replace the term and definition by the following:
3.120
hydronic fan coil unit
factory-made assembly which provides the function of forced circulation of air for heating
and/or cooling, which may also include the function of dehumidification and/or filtering of air,
but which does not include the source of cooling or heating
Note 1 to entry: Hydronic fan coil units can include provision for electric resistance heating. Heat exchanger
coils are intended for hydronic heating and cooling only.
3.121
flammable refrigerant
Replace the definition by the following:
refrigerant listed under ISO 817 or ASHRAE 34 with a classification of A2L, A2 or A3
Add the following new definitions:

– 4 – IEC 60335-2-40:2013/AMD1:2016

© IEC 2016
3.129
condenser
heat exchanger in which refrigerant vapor is condensed by removal of heat

3.130
condensing unit
factory-made assembly that includes one or more motor-compressors, condenser in cooling

mode and motor-driven fan, blower or pump to circulate the heat transfer fluid through the

condenser with associated operational controls in addition to the necessary wiring

Note 1 to entry: These units are intended for field connection to an evaporator unit. A condensing unit can also
be equipped to operate in the reverse cycle mode. A condensing unit can include expansion device(s).

3.131
condenser unit
factory-made assembly that includes one or more condensers in cooling mode and motor-
driven fan, blower or pump to circulate the heat transfer fluid through the condenser with
associated operational controls in addition to the necessary wiring
Note 1 to entry: These units are intended for field connection to an evaporating unit. A condenser unit can also
be equipped to operate in the reverse cycle mode.
Note 2 to entry: A condenser unit does not include a motor compressor or expansion device.
3.132
evaporating unit
factory-made assembly that includes one or more motor-compressors, evaporator in cooling
mode, expansion device(s), and motor-driven fan, blower or pump to circulate fluid through
the evaporator with associated operational controls in addition to the necessary wiring
Note 1 to entry: These units are intended for field connection to a condenser unit. An evaporating unit can also
be equipped to operate in the reverse cycle mode and can include provision for electric resistance heating or
similar sources of auxiliary heat.
3.133
evaporator unit
factory-made assembly that includes one or more evaporators in cooling mode, and may
include a motor-driven fan, blower or pump to circulate fluid through the evaporator with
associated operational controls in addition to the necessary wiring
Note 1 to entry: These units are intended for field connection to a condensing unit. An evaporator unit can also
be equipped to operate in the reverse cycle mode and can include provision for electric resistance heating or
similar sources of auxiliary heat. An evaporator unit can include expansion device(s).

Note 2 to entry: An evaporator unit does not include a motor compressor.
3.134
partial unit
condensing unit, evaporating unit, condenser unit, or evaporator unit which are part of a
total assembly of a heat pump, air-conditioner, or sanitary hot water heat pumps where
not all assemblies to create the complete refrigeration system are specified by the
manufacturer
Note 1 to entry: Partial units are evaluated for safety as stand-alone.
3.135
installed height
h
inst
height of the bottom of the appliance relative to the floor of the room after installation
Note 1 to entry: The installed height is given in metres.

© IEC 2016
3.136
release offset
h
rel
distance from the bottom of the appliance to an opening where refrigerant can leave the

appliance in the event of a refrigerant leak

Note 1 to entry: The release offset is given in metres.

3.137
refrigerant charge
m
c
actual refrigerant charge of a single refrigerating system

Note 1 to entry: The refrigerant charge is expressed in kg.
3.138
maximum refrigerant charge
m
max
maximum refrigerant charge for a single refrigerating system as result from a calculation
for room area or similar
Note 1 to entry: The maximum refrigerant charge is expressed in kg.
7 Marking and instructions
7.1
In the addition, replace the second dash by the following:
– refrigerant charge;
In the addition, replace the third dash by the following:
– refrigerant as designated under ISO 817 or ANSI/ASHRAE 34;
In the addition, replace the fifth dash by the following:
– maximum operating pressure in the water and/or brine circuit for the heat exchanger for
hydronic fan coil units;
In the first paragraph below the warning, replace the second sentence by the following:
The X in the marking shall be determined in m according to Clause GG.2 for unventilated
areas; and the X in the marking shall not be required if the refrigerant charge (m ) of the
c
appliance is up to m according to GG.1.1.
Add the following new subclauses:
7.103 For appliances made up of more than one factory made assembly specified by the
manufacturer to be used together, instructions shall be provided for completing the assembly
to ensure compliance with the requirements.
7.104 For partial units, the instructions or markings shall include the following additional
information.
– For evaporating units and condensing units, the instructions or markings shall include
wording to assure that the maximum operating pressure is considered when connecting to
any condenser unit or evaporator unit.
– For evaporating units, condensing units and condenser units, the instructions or
markings shall include refrigerant charging instructions.

– 6 – IEC 60335-2-40:2013/AMD1:2016

© IEC 2016
– A warning to assure that partial units shall only be connected to an appliance suitable for

the same refrigerant.
– This unit is a partial unit air conditioner, complying with partial unit

requirements of this International Standard, and must only be connected to other units that

have been confirmed as complying to corresponding partial unit requirements of this

International Standard.
– The electrical interfaces shall be specified with purpose, voltage, current, and safety class

of construction.
– The SELV connection points, if provided, are to be clearly indicated in the instructions.

The connection point should be marked with the “read the instructions” symbol per
ISO 7000-0790 (2004-01) and the Class III symbol according to IEC 60417-5180 (2003-
02).
11 Heating
Replace the second dashed item of 11.2 by the following:
– flow rates for liquid source or sink equipment shall be the minimum specified in the
manufacturer's instructions except for hydronic fan coil units where the flow rates and
liquid temperatures shall be the maximum specified in the manufacturer’s instructions;
Add the following new subclause:
11.2.3 For the evaluation and testing of partial units, the following test setup and conditions
are to be applied.
– evaporator units and condenser units are tested as individual units at the maximum
ambient temperature stated in the instructions. If not stated in the instructions, these units
shall be tested at an ambient temperature that is equal to the saturated temperature of the
refrigerant at the marked maximum allowable operating pressure (± 0,1 MPa) minus 10 K
(± 1 K).
– condensing units are tested in the cooling mode only, at the maximum specified ambient
temperature with 9 K (± 1 K) sub-cooling and the maximum specified evaporating pressure
with 11 K (± 1 K) superheat. For condensing units provided with expansion device(s),
the superheat/sub-cooling is to be as under the normal control of the expansion device(s).
– evaporating units, intended for cooling only, are tested in the cooling mode only with a
condensing pressure that is equal to the marked maximum allowable operating pressure
(± 0,1 MPa) with 9 K (± 1 K) sub-cooling.
– evaporating units that are intended for reverse cycle operation are tested in the heating
mode only, at the maximum specified evaporating pressure.

NOTE Testing for condensing and evaporating units requires connection to calorimeter stand or similar device
capable of controlling the
...