SIST EN 60335-2-75:2002

Safety of household and similar electrical appliances -- Part 2-75: Particular requirements for commercial dispensing appliances and vending machines (electric or gas-heated)

Deals with the safety of commercial electric dispensing appliances and vending machines for preparation or delivery of food, drinks and consumer products, their rated voltage being not more than 250 V for single-phase appliances and 480 V for other appliances. This standard remplaces EN 60335-2-63 (1990).

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke -- Teil 2-75: Besondere Anforderungen für Ausgabegeräte und Warenautomaten für den gewerblichen Gebrauch

Sécurité des appareils électrodomestiques et analogues -- Partie 2-75: Règles particulières pour les distributeurs commerciaux avec ou sans moyen de paiement (électriques ou alimentés aux combustibles gazeux)

Traite de la sécurité des distributeurs électriques commerciaux, avec ou sans moyen de paiement, destinés à la préparation et à la distribution d'aliments, de boissons et de produits de consommation, leur tension assignée n'étant pas supérieure à 250 V pour les appareils monophasés et à 480 V pour les autres appareils. Cette norme remplace la EN 60335-2-63 (1990).

Varnost gospodinjskih in podobnih električnih aparatov - 2-75. del: Posebne zahteve za komercialne aparate za prodajo hrane in pijače in prodajne avtomate (električne ali plinske) (IEC 60335-2-75:1995; spremenjen)

General Information

• Status: Withdrawn
• Publication Date: 31-Oct-2002
• Withdrawal Date: 15-Feb-2009
• ICS: 55.230 - Distribution and vending machines
• Technical Committee: VGA - Safety of household and similar electrical appliances
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 09-Jan-2009
• Due Date: 01-Feb-2009
• Completion Date: 16-Feb-2009
• Directive: 73/23/EEC - Electrical equipment designed for use within certain voltage limits
• Mandate: M/079 - Mandate to CEN and CENELEC for standardization in the field of machines
• Ref Project: EN 60335-2-75:2002 - Safety of household and similar electrical appliances - Part 2-75: Particular requirements for commercial dispensing appliances and vending machines (electric or gas-heated)

Relations

• Replaced By: SIST EN 60335-2-75:2004 - Household and similar electrical appliances - Safety -- Part 2-75: Particular requirements for commercial dispensing appliances and vending machines (IEC 60335-2-75:2002)
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60335-2-75:2002
01-november-2002
9DUQRVWJRVSRGLQMVNLKLQSRGREQLKHOHNWULþQLKDSDUDWRYGHO3RVHEQH
]DKWHYH]DNRPHUFLDOQHDSDUDWH]DSURGDMRKUDQHLQSLMDþHLQSURGDMQHDYWRPDWH
HOHNWULþQHDOLSOLQVNH,(&VSUHPHQMHQ
Safety of household and similar electrical appliances -- Part 2-75: Particular
requirements for commercial dispensing appliances and vending machines (electric or
gas-heated)
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke -- Teil 2-75:
Besondere Anforderungen für Ausgabegeräte und Warenautomaten für den
gewerblichen Gebrauch
Sécurité des appareils électrodomestiques et analogues -- Partie 2-75: Règles
particulières pour les distributeurs commerciaux avec ou sans moyen de paiement
(électriques ou alimentés aux combustibles gazeux)
Ta slovenski standard je istoveten z: EN 60335-2-75:2002
ICS:
55.230 Razdelilni in prodajni Distribution and vending
avtomati machines
SIST EN 60335-2-75:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60335-2-75:2002

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SIST EN 60335-2-75:2002
EUROPEAN STANDARD EN 60335-2-75
NORME EUROPÉENNE
EUROPÄISCHE NORM June 2002
ICS 55.230
English version
Safety of household and similar electrical appliances
Part 2-75: Particular requirements for commercial
dispensing appliances and vending machines
(electric or gas-heated)
(IEC 60335-2-75:1995, modified)
Sécurité des appareils Sicherheit elektrischer Geräte für den
électrodomestiques et analogues Hausgebrauch und ähnliche Zwecke
Partie 2-75: Règles particulières pour les Teil 2-75: Besondere Anforderungen
distributeurs commerciaux avec ou sans für Ausgabegeräte und Warenautomaten
moyen de paiement (électriques ou für den gewerblichen Gebrauch
alimentés aux combustibles gazeux) (IEC 60335-2-75:1995, modifiziert)
(CEI 60335-2-75:1995, modifiée)
This European Standard was approved by CENELEC on 2002-03-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard 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 Central Secretariat or to any CENELEC member.
This European Standard 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60335-2-75:2002 E

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SIST EN 60335-2-75:2002
EN 60335-2-75:2002 – 2 –
Foreword
The text of document 61/896/DIS, first edition of IEC 60335-2-75, prepared by the IEC Technical
Committee 61, was submitted to the IEC-CENELEC parallel voting procedure. This procedure started
in May 1995 but the draft did not receive sufficient support from the CENELEC members. The
comments were discussed during the Copenhagen meeting in May 1996 when it was decided to submit a
draft for EN 60335-2-75 to the Unique Acceptance Procedure.
This draft was circulated in April 1997 but did not receive sufficient support. The comments were
discussed during the Kristiansand meeting in June 2000 and the Brussels meeting in October 2000 when
it was decided to submit a further draft for EN 60335-2-75 to the Unique Acceptance Procedure.
This draft was circulated in June 2001 and was ratified by CENELEC as EN 60335-2-75 on 2002-03-01.
The following dates are applicable:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-03-01
- date on which national standards
conflicting with the EN have to be withdrawn (dow) 2005-03-01
This standard has to be used in conjunction with EN 60335-1, Safety of household and similar electrical
appliances, Part 1: General requirements. It was established on the basis of the 1994 edition of that
standard. Amendments and revisions of Part 1 have also to be taken into account and the dates when
such changes become applicable will be stated in the relevant amendment or revision of Part 1.
This Part 2 supplements or modifies the corresponding clauses of EN 60335-1, so as to convert it into
the European Standard: Safety requirements for commercial dispensing appliances and vending
machines.
When a particular subclause of Part 1 is not mentioned in this Part 2, that subclause applies as far as is
reasonable. When this standard states "addition", "modification" or "replacement", the relevant text of
Part 1 is to be adapted accordingly.
Subclauses and figures which are additional to those in Part 1 are numbered starting with 101. Annexes
which are additional to those in Part 1 are lettered AA, BB, etc. The reference of subclauses, notes,
figures and annexes which are additional to those in IEC 60335-2-75 is prefixed with the letter Z.
There are no special national conditions causing a deviation from this European Standard, other than
those listed in annex ZA to EN 60335-1.
NOTE  Special national conditions for gas characteristics are listed in EN 437.
There are no national deviations from this European Standard, other than those listed in annex ZB to
EN 60335-1.
NOTE  The following print types are used:
- requirements: in roman type;
- test specifications: in italic type;
- notes: in small roman type.

Words in bold in the text are defined in clause 2. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
p NOTE  In this document p is used in the margin to indicate instructions for preparing the printed version.
____________

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SIST EN 60335-2-75:2002
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Introduction
An investigation by CENELEC TC 61 has shown that all risks from products within the scope of this
standard are fully covered by the Low Voltage Directive, 73/23/EEC. For products having mechanical
moving parts, a risk assessment in accordance with the Machinery Directive, 89/392/EEC, has shown
that the risks are mainly of electrical origin and consequently this directive is not applicable. However,
the relevant essential safety requirements of the Machinery Directive are covered by this standard
together with the principal objectives of the Low Voltage Directive.
____________
Endorsement notice
The text of the international Standard IEC 60335-2-75:1995 was approved by CENELEC as a
European Standard with accepted common modifications as given below.
COMMON MODIFICATIONS
1 Scope
p Add to the first paragraph:
It also applies to commercial electric espresso-coffee machines that can also be heated by gas (see
annex ZAA).
p Add to note 1:
 - coffee grinders.
p Add after note 2:
This standard also deals with the hygiene aspects of appliances.
2 Definitions

p 2.9.9 Replace the text of the replacement by:

maintenance operation: Operation performed in the maintenance area or user area, such as
preparing the appliance for new products or new operating methods, cleaning, replenishing, coin
collecting and setting of controls or similar operations.
p Add:
2.Z101 cleanable surface: Surface such that soils can be removed in accordance with the
instructions for maintenance.
2.Z102 disinfecting: Inactivating all pathogens and a wide range of other micro-organisms to a level
consistent with hygienic application of the appliance.
2.Z103 food: Any product or ingredient intended to be orally consumed.
2.Z104 hygiene risk assessment: Process for identifying hygiene hazards and the preventative
measures for control of these hazards.
2.Z105 potentially hazardous food: Any food which consists in whole or in part of natural or
synthetic ingredients which are in a form for which laboratory evidence demonstrates a capability for
supporting rapid and progressive growth of pathogenic or toxin producing micro-organisms.

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SIST EN 60335-2-75:2002
EN 60335-2-75:2002 – 4 –
NOTE 1  Examples of potentially hazardous food are milk, eggs, meat, poultry, shellfish, crustacea, and their
products, either raw or heat treated. Food of plant origin which is ready for consumption without the need for
any further preparation or processing is also an example.
NOTE 2  Food may become potentially hazardous food during processing, for example when powdered
ingredients are mixed with water or when food is stored at incorrect temperatures.
NOTE 3  Potentially hazardous food does not include:
– food having a pH level of 4,6 or less or water activity (Aw) value of 0,85 or less at 25 °C;
– food maintained at a temperature of 5 °C or less for periods specified by the producer but not more than 5
days;
– food maintained at a temperature above 65 °C;
– food maintained at a temperature below -18 °C;
– candy, nuts, gum and similar confectionery;
– cookies, crackers and similar bakery products;
– instant-coffee, chocolate, cocoa and sugar;
– food in hermetically sealed containers;
– food which has been processed to prevent spoilage.
2.Z106 soil: Any unwanted matter, including product residues, micro-organisms, residual detergent
or disinfectant solutions.
2.Z107 vermin: Mammals, birds, reptiles and insects which may adversely influence the food.
7 Marking and instructions
p 7.12.1 Replace the text of the replacement:
If it is necessary to take special precautions during installation or maintenance operations, details of
these shall be supplied, including the use of personal protective equipment, if necessary.
The instructions for maintenance, supplied with the appliance or later, shall state how to gain
access to the maintenance area. They shall not include instructions on how to gain access to a
service area.
The instructions for maintenance shall
- specify the types of food for which the appliance is suitable,
NOTE Z1  Different foods may require different instructions.
- give details on how to ensure hygienic operation for the range of foods specified,
- include instructions for descaling, cleaning and details for the flushing and removal of any residual
cleaners, sterilizers or descalers from the appliance, if applicable,
- specify the method and frequency of cleaning, disinfecting and rinsing together with the
recommended cleaning or disinfecting agents.
NOTE Z2  The agents may be identified by their chemical denomination.
The instructions for maintenance for appliances intended for storage and dispensing potentially
hazardous food, when the safety of the food depends upon the temperature of the appliance, shall
include details for safe loading of the food.
NOTE Z3  This instruction is not required for appliances
– which do not dispense food,
– which dispense food in sealed containers such as cans and bottles.

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The instructions for maintenance for appliances incorporating an appliance inlet and intended to be
partially or completely immersed in water for cleaning, shall state that the connector must be
removed before the appliance is cleaned and that the appliance inlet must be dried before the
appliance is used again.
The instructions for maintenance shall state how to use the access key or the override key. If the
use of an override key allows access to moving parts, a suitable warning shall be given.
If it is necessary to take special precautions during handling and storage prior to installation of the
appliance, details shall be given.
The instructions for installation intended to be connected to the water mains, shall specify the means
of connection and draw attention to any national rules which may be applicable.
p 7.12.103 Add:
These temperatures shall also be stated in the instructions for installation.
p Add:
7.12.Z101 The instructions shall state that access to the service area should only be permitted to
persons having knowledge and practical experience of the appliance, in particular as far as safety and
hygiene are concerned.
NOTE  Guidelines on the reduction of acoustical noise are given in EN ISO 11688-1.
7.12.Z102 The instructions for maintenance shall include a statement about the acoustical noise
emitted by the appliance, depending on the level as specified below. When relevant, the statement
shall use the dual-number form of declaration defined in EN ISO 4871, including the value of
uncertainty.
7.12.Z102.1 If the A-weighted sound pressure level determined in accordance with annex ZBB is
below 70 dB, no value need be given, but the instructions shall state that the A-weighted sound
pressure level is below 70 dB.
7.12.Z102.2 If the A-weighted sound pressure level determined in accordance with annex ZBB is
above 70 dB, the instructions shall state the value in the following form:
A-weighted sound pressure level xx dB, uncertainty y dB
7.12.Z102.3 If the A-weighted sound pressure level determined in accordance with annex ZBB is
above 85 dB, the instructions shall state the values of the sound pressure level and the sound power
level in the following form:
A-weighted sound pressure level xx dB, uncertainty y dB
A-weighted sound power level XX dB, uncertainty Y dB
22 Construction
p 22.104 Delete the note.
p Add:
22.Z101 Appliances for dispensing potentially hazardous food shall incorporate a device which
automatically prevents dispensing the food if a storage on process temperature reaches a value
having an adverse influence on the food.

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SIST EN 60335-2-75:2002
EN 60335-2-75:2002 – 6 –
NOTE  An adverse influence is an effect which gives a significant reduction of fitness for consumption of food.
A food can be adversely influenced in particular by microbial pathogens or other unwanted micro-organisms,
toxins, vermin, domestic animals and other contaminants.
Compliance is checked by inspection.
22.Z102 Surfaces of food areas shall be cleanable surfaces and if necessary they shall be capable
of being disinfected.
NOTE  The food area comprises surfaces in contact with the food and surfaces that the food may contact
during preparation of the product.
Compliance is checked by inspection after having operated, cleaned and disinfected the appliance in
accordance with the instructions for maintenance.
22.Z103 Surfaces of splash areas shall be cleanable surfaces.
NOTE  The splash area comprises surfaces on which part of the food may splash or flow during normal use
without it becoming part of the product.
Compliance is checked by inspection after having operated and cleaned the appliance in accordance
with the instructions for maintenance.
22.Z104 Non-food areas that are not adequately separated from food areas shall be constructed so
that the retention of moisture, the ingress and harbourage of vermin and soils is prevented. When
this is unavoidable, the surfaces of non-food areas shall be cleanable surfaces.
NOTE 1  Non-food areas are areas other than food areas and splash areas.
NOTE 2  This requirement does not apply to appliances
– which do not dispense food,
– which dispense food in sealed containers such as cans and bottles.
Compliance is checked by inspection.
22.Z105 Appliances shall be constructed so that hygiene hazards that are identified by a hygiene risk
assessment are prevented.
Compliance is checked by inspection.
NOTE  Hygiene requirements in addition to those covered by 22.Z101 to 22.Z104 are under consideration.
22.Z106 Appliances intended to be connected to the water mains shall be constructed so that
backsiphonage is prevented.
Compliance is checked by inspection and by the relevant tests of EN 61770.

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Annexes
Annex A - Normative references
p Replace by:
Annex A
(normative)
Normative references
International publications with their relevant European publication
Addition:
IEC standard Year Title EN/HD Year
61058-1 1990 Switches for appliances – Part 1: General EN 61058-1 1992
requirements
61770 1998 Electric appliances connected to the water EN 61770 1999
mains – Avoidance of backsiphonage
and failure of hose-sets
ISO standard Year Title EN/HD Year
228-1 2000 Pipe threads where pressure-tight joints are - -
not made on the threads
Part 1: Dimensions, tolerances and designation
1817 1999 Rubber, vulcanized - Determination of the - -
effect of liquids
3743-1 1994 Acoustics – Determination of sound power EN ISO 3743-1 1995
levels of noise sources – Engineering methods
for small, movable sources in reverberant
fields – Part 1: Comparison method for
hard-walled test rooms
3744 1994 Acoustics – Determination of sound power EN ISO 3744 1995
levels of noise sources using sound pressure –
Engineering method in an essentially free field
over a reflecting plane
4871 1996 Acoustics – Declaration and verification of noise EN ISO 4871 1996
emission values of machinery and equipment
11201 1995 Acoustics – Noise emitted by machinery and EN ISO 11201 1995
equipment – Measurement of emission sound
pressure levels at a work station and at other
specified positions – Engineering method in an
essentially free field over a reflecting plane
11688-1 1995 Acoustics – Recommended practice for the EN ISO 11688-1 1998
design of low-noise machinery and equipment –
Part 1: Planning

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SIST EN 60335-2-75:2002
EN 60335-2-75:2002 – 8 –
CEN standard Year Title
EN 437 1993 Test gases - Test pressures - Appliance categories
CR 1749 1995 European scheme for the classification of gas appliances according to the
method of evacuation of the products of combustion (types)
CR 1472 1994 General guidance for the marking of gas appliances
__________

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Annex ZAA
(normative)
Commercial electric espresso-coffee machines that can also be heated by gas
ZAA.1 Scope
This annex applies to the gas-heated part of commercial electric espresso-coffee machines having a
nominal heat input not exceeding 3,5 kW, which incorporate an atmospheric injection burner and a
steam or superheated water generator having a maximum rated pressure of 0,3 MPa (3 bar) and a
maximum capacity of 35 litres.
ZAA.2 Definitions
ZAA.2.101 atmospheric injection burner: Burner in which part of the air necessary for the combustion,
called primary air, is entrained by the gas flow and is mixed upstream of the burner, the remainder of the
air, called secondary air, is entrained downstream of the burner.
ZAA.2.102 gas rate adjuster: Device allowing the gas rate of a burner to be set at a pre-determined
value in accordance with the supply conditions.
NOTE 1  The adjustment may be continuous (adjustment screw) or discontinuous (change of calibrated orifices,
etc.).
NOTE 2  The operation of changing the setting of this device is termed “adjustment of the gas rate “.
ZAA.2.103 modulating governor: Device which maintains a sensibly constant downstream pressure
when the upstream pressure and the gas rate vary within a range of given values.
ZAA.2.104 primary air adjuster: Device allowing the primary aeration of a burner to be set at a
pre-determined value in accordance with the supply conditions.
NOTE  The operation of changing the setting of this device is termed “adjustment of the primary air”.
ZAA.4 General conditions for the tests
ZAA.4.4 Addition:
When testing the gas-heated part of the appliance, the influence of the electric part has to be taken into
account.
ZAA.6 Classification
ZAA.6.101 Appliances are classified in accordance with EN 437 with respect to test gases, test
pressures and appliance categories.
ZAA.6.102 Appliances shall be of type A in accordance with CEN report 1749 with respect to the
method of evacuation of the products of combustion.

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SIST EN 60335-2-75:2002
EN 60335-2-75:2002 – 10 –
ZAA.7 Marking and instructions
ZAA.7.1 Addition :
– type of gas and pressure or pressure couple for which the appliance is adjusted;
– category. When more than one category is specified, each of these categories shall be indicated with
respect to the appropriate countries of destination;
– nominal heat input.
NOTE  For these markings, the CEN report CR 1472 may be used.
The appliance shall be marked with the substance of the following warning :
WARNING: This appliance is to be installed in accordance with the national regulations and only in
a correctly ventilated location.
ZAA.7.1.101 Gas taps shall be marked with
– a disc for “off”,
– a star for “ignition”,
– a large stylized flame for “burner full on”,
– a small stylized flame for “reduced rate”.
NOTE  The marking is not required provided that incorrect manipulation is not possible.
Compliance is checked by inspection.
ZAA.7.1.102 Injectors shall be marked with appropriate means of identification.
Compliance is checked by inspection.
ZAA.7.12 Addition :
The instructions for use shall state the type of gas and the pressure or pressure couple for which the
appliance is adjusted.
ZAA.7.12.1 Addition:
The instructions for installation shall contain the substance of the following warnings:
WARNING : Before installation, take care that the conditions of the local gas distribution (type and
pressure of gas) are compatible with the adjustment of the appliance.
WARNING : This appliance must be installed and connected in accordance with the national
regulations. Special attention is to be paid to the regulations with regard to ventilation.
The instructions for installation shall include information with regard to
– connection of the appliance to the gas supply,
– national regulations regarding installation and ventilation of the country where the appliance is to be
installed,
– fixing of the appliance, if applicable,
– minimum distances between the appliance and the adjacent walls, if applicable,
– required values of the pressure in accordance with the Wobbe number of the gas used,
– adjusting devices, in particular the type and the characteristics of the gas pressure regulator, if any.
ZAA.7.12.101 The instructions shall include all the necessary information with regard to the conversion
from a gas of one group or family to a gas of another group or another family. They shall also include
details for adjusting the appliance to the different distribution pressures.
Compliance is checked by inspection.

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ZAA.19 Abnormal operation
ZAA.19.1 Addition:
Burners of gas espresso-coffee machines are subjected to the test of ZAA.19.101.
ZAA.19.101 The appliance is adjusted for one of the reference gases corresponding to the category
specified. The test is carried out using the reference gas and the corresponding injector.
For appliances having several identical burners, the test is only carried out on one burner of each type.
The gas is ignited at the injector provided that this is possible without dismantling a major part of the
appliance, and also at the burner head if the combustion can be maintained under these conditions. The
test is carried out for 15 min at nominal heat input.
If the combustion cannot be maintained at the injector, the pressure is reduced until the combustion can
be maintained. It is not reduced below the minimum pressure specified. If the combustion still cannot be
maintained, the test is carried out with the gas rate adjuster set at the reduced rate position.
The burner shall show no deterioration other than that associated with gas combustion.
ZAA.22 Construction
ZAA.22.101 The operations necessary for the conversion from a gas of one group or family to a gas of
another group or another family, and for adapting to the different distribution pressures of a gas, shall be
in accordance with the requirements given below for each category. It shall be possible to carry out these
operations without having to disconnect the appliance from the gas supply.
The parts necessary for the conversion shall be available from the manufacturer.
ZAA.22.101.1 Category I
ZAA.22.101.1.1 Categories I I , l , l :
2H, 2L 2E 2E+
No adjustment of the appliance.
ZAA.22.101.1.2 Category I :
3B/P
No adjustment of the appliance.
ZAA.22.101.1.3 Category I :
3+
– replacement of injectors or restrictors but only to convert from one pressure couple to another, for
example from 28 mbar/37 mbar to 50 mbar/67 mbar;
– adjustment of the primary air to convert from one pressure couple to another.
ZAA.22.101.1.4 Category l :
3P
– for changing the gas: no adjustment of the appliance;
– for changing the pressure: replacement of injectors, adjustment of the gas rate and adjustment of the
primary air.

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EN 60335-2-75:2002 – 12 –
ZAA.22.101.2 Category II
ZAA.22.101.2.1 Categories of appliances designed for use with gases of the first and second families:
– replacement of injectors or restrictors;
– adjustment of the gas rate, for gases of the first family;
– adjustment of the primary air;
– rendering the modulating governor inoperative;
– rendering the gas rate adjuster inoperative for gases of the second family.
These operations are only acceptable when converting from a gas of the first family to a gas of the
second family and vice versa.
ZAA.22.101.2.2 Categories of appliances designed for use with gases of the second and third families:
– replacement of injectors or restrictors;

– adjustment of primary air;

– rendering the modulating governor inoperative;

– rendering the gas rate adjuster inoperative for gases of the second family.
These operations are only acceptable
– when converting from a gas of one family to a gas of another family,
– when converting from a butane/propane pressure couple to another, for example, 28 mbar/37 mbar
to 50 mbar/67 mbar.
When converting from one gas to another within a pressure couple of the third family, only the primary
air is allowed to be adjusted.
ZAA.22.101.3 Category III:
– replacement of injectors or restrictors;
– adjustment of the gas rate, for gases of the first family;
– adjustment of the primary air;
– adjustment of the modulating governor;
– rendering the gas rate adjusters inoperative, for gases of the third family;
– rendering the modulating governor inoperative.
These operations are only acceptable
– when converting from a gas of one family to a gas of another family,
– when converting from a butane/propane pressure couple to another couple.
When converting from one gas to another within a pressure couple of the third family, only the primary
air is allowed to be adjusted.

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ZAA.22.102 The means of connection of the appliance to the gas supply shall be easily accessible.
They shall be located so that sufficient space is provided for the tightening tool.
Except for appliances of category I , the inlet connections shall have a thread which complies with
3
ISO 228-1 or shall have a compression fitting. In the first case, the end of the inlet connection shall be
sufficiently flat in order to accommodate a seal.
The pipe incorporating the inlet connection shall be rigidly fixed to the appliance.
Compliance is checked by inspection.
ZAA.22.103 Holes for screws and other fastening means for assembling the appliance shall not end in
cavities containing gas.
The tightness of the gas circuit shall be ensured by means of metal to metal joints or joints with seals, for
example washes, O-rings or gaskets. Products which seal the thread are only allowed to be used for
parts which are not disassembled during user maintenance, for example gas taps and injectors. Solder
having a melting point lower than 450° C, glues and resins shall not be used to ensure the tightness of
the gas circuit.
Compliance is checked by inspection.
ZAA.22.104 Appliances shall be constructed so that under normal working conditions, sufficient air is
provided for combustion. The passage for combustion products shall be constructed so that it cannot be
obstructed.
The cross-sectional area of the passage for air towards the combustion chamber, and the cross-sectional
area of the passage for combustion products, shall not be adjustable.
Compliance is checked by inspection.
ZAA.22.105 It shall be possible to visually check the ignition and operation of the burner.
NOTE  It may be necessary to open a shutter to see the burner.
Compliance is checked by inspection
ZAA.22.106 Gas taps shall be mounted so that they are protected against dirt and that their strength,
operation, handling and accessibility are not affected by actuation during normal use. They shall be
installed in a position for easy access for their replacement and maintenance.
Gas tap levers shall be constructed so that they cannot be incorrectly fitted and shall
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