oSIST prEN 1:2013

Flued oil stoves with vaporizing burners

This standard applies to flued oil stoves with one or more vaporizing burners (hereafter referred to as "stoves") as used for individual heating in the domestic field and having either a draught regulator or a combustion air limiter as defined in 3.13 and a nominal heating capacity of not more than 15 kW. This standard also applies to appliances with fan assisted vaporizing burners. This standard does not cover - Built-in appliances - appliances equipped with an atomizing burner - appliances incorporating a boiler or connected to a water system. According to the type of fuels used in the country of destination, the stoves are supplied for use with either: - fuel oil with a maximum kinematic viscosity of 6,0 mm²/s at 20 °C - or kerosene with a flash point of not less than 40 °C

Heizöfen für flüssige Brennstoffe mit Verdampfungsbrenner und Schornsteinanschluss

Diese Europäische Norm gilt für Heizöfen für flüssige Brennstoffe mit einem oder mehreren Verdampfungsbrennern mit oder ohne Ölbehälter und Schornsteinanschluss (nachfolgend kurz: Heizöfen), die zur Beheizung eines einzelnen Raumes im häuslichen Bereich verwendet werden und entweder einen Förderdruckbegrenzer oder einen Verbrennungsluftbegrenzer nach 3.13 und eine Nennwärmeleistung von nicht mehr als 15 kW haben.
Diese Norm gilt auch für Ölheizöfen, die mit einem ventilatorunterstützten Brenner ausgerüstet sind.
Sie gilt nicht für
-   Einbaugeräte;
-   Ölheizöfen, die mit einem Ölzerstäubungsbrenner ausgerüstet sind;
-   Ölheizöfen mit wasserführenden Bauteilen oder Ölheizöfen, die an ein Wassersystem angeschlossen sind.
Die Heizöfen sind entsprechend der im Bestimmungsland üblichen Brennstoffart zu betreiben, entweder
-   mit Heizöl mit einer kinematischen Viskosität von höchstens 6,0 mm2/s bei 20 °C oder
-   mit Kerosin mit einem Flammpunkt von mindestens 40 °C.

Poêles à combustible liquide avec brûleurs à vaporisation raccordés à un conduit évacuation des produits de la combustion

La présente norme s’applique aux poêles à combustible liquide comportant un ou plusieurs brûleurs à vaporisation (dénommés ci-après : « poêles »), utilisés pour le chauffage individuel dans le domaine domestique, comportant soit un limiteur de tirage, soit un limiteur d'air de combustion tel que défini en 3.13, et présentant une puissance calorifique nominale ne dépassant pas 15 kW.
La présente norme s'applique également aux appareils à brûleurs à vaporisation avec ventilateur.
Elle ne s'applique pas :
-   aux appareils encastrés ;
-   aux appareils munis d'un brûleur à pulvérisation ;
-   aux appareils intégrant une chaudière ou raccordés à un circuit hydraulique.
Selon la nature des combustibles utilisés dans le pays de destination, les poêles sont alimentés soit :
-   en fioul de viscosité cinématique égale à 6,0 mm²/s à 20 °C ;
-   en kérosène avec un point d'inflammation d'au moins 40 °C.

Peči za gretje na tekoča goriva z uparjalnimi gorilniki in priključkom na dimnik

General Information

• Status: Not Published
• Public Enquiry End Date: 29-Sep-2013
• ICS: 97.100.40 - Liquid fuel heaters
• Technical Committee: OGS - Heating for buildings
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 23-Sep-2016
• Due Date: 28-Sep-2016
• Completion Date: 23-Sep-2016
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 765/2008 - REGULATION (EC) No 765/2008 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 July 2008 setting out the requirements for accreditation and market surveillance relating to the marketing of products and repealing Regulation (EEC) No 339/93
• Directive: 89/106/EEC - Construction products
• Mandate: M/129 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on space heating appliances
• Ref Project: prEN 1 rev - Flued oil stoves with vaporizing burners

Relations

• Revised: SIST EN 1:2000 - Flued oil stoves with vaporizing burners
• Effective Date: 18-Jan-2023
• Revised: SIST EN 1:2000 - Flued oil stoves with vaporizing burners
• Effective Date: 12-Nov-2011

Overview

The CEN draft standard prEN 1 rev defines requirements for flued oil stoves with vaporizing burners used for individual domestic heating with a nominal capacity not exceeding 15 kW. It covers appliances with draught regulators or combustion air limiters and includes stoves fitted with fan-assisted vaporizing burners. Fuels addressed are fuel oil (maximum kinematic viscosity 6.0 mm²/s at 20 °C) or kerosene (flash point ≥ 40 °C). Built-in appliances, atomizing burners and appliances incorporating or connected to a water system are excluded.

This document provides manufacturers, test laboratories and authorities with harmonized guidance on construction, performance, testing and declaration of conformity for these domestic heaters.

Key Topics

• Constructional requirements: materials, combustion chamber, filters, oil regulators, safety devices, fuel lines, storage tank components and assembly/maintenance provisions.
• Operational and performance criteria: specified maximum and minimum oil flow, ignition reliability, appliance classes for efficiency and emissions, smoke number, flue gas and component temperatures, and limits for carbon monoxide, NOx and unburnt hydrocarbons.
• Test methods: detailed procedures for short- and long-term operational tests, leak-tightness checks, measurement apparatus and test fuel specifications. Annexes define measurement methods such as smoke-number determination, oil-derivative detection, NOx and total hydrocarbon measurement.
• Marking and instructions: requirements for installation instructions, user operating guidance, safety labelling and documentation for production and AVCP (Assessment and Verification of Constancy of Performance).
• Assessment and AVCP: type testing, factory production control requirements, reporting and criteria for compliance and CE marking under Construction Products provisions.

Applications

This standard is directly applicable to:

• Manufacturers designing and certifying domestic flued oil stoves with vaporizing burners.
• Test laboratories performing performance, emissions and safety testing for product certification.
• Installers and specifiers assessing suitability of appliances for homes where fuel oil or kerosene is used.
• Regulatory bodies and conformity assessment bodies implementing AVCP and CE marking for heating appliances.

Practical benefits include improved product safety, consistent performance and predictable emissions, plus clearer installation and maintenance guidance to support safe in-field operation.

Related Standards

• EN 1:1998 (to be superseded by this revision) - historical reference for liquid fuel heaters.
• Relevant CEN/CENELEC guidance on AVCP and CE marking for construction products.
• Measurement standards and test-method protocols referenced in annexes for NOx, THC and smoke-number assessments.

For manufacturers and assessors, prEN 1 rev consolidates construction, testing and marking expectations for flued oil stoves with vaporizing burners, enabling reliable product design and market access across CEN member states.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2013
3HþL]DRJUHYDQMHQDWHNRþDJRULYD]XSDUMDOQLPLJRULOQLNLLQSULNOMXþNRPQDGLPQLN
Flued oil stoves with vaporizing burners
Heizöfen für flüssige Brennstoffe mit Verdampfungsbrenner und Schornsteinanschluss
Poêles à combustible liquide avec brûleurs à vaporisation raccordés à un conduit
évacuation des produits de la combustion
Ta slovenski standard je istoveten z: prEN 1 rev
ICS:
97.100.40 *UHOQLNLQDWHNRþHJRULYR Liquid fuel heaters
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
prEN 1
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2013
ICS 97.100.40 Will supersede EN 1:1998
English Version
Flued oil stoves with vaporizing burners
Poêles à combustible liquide avec brûleurs à vaporisation Heizöfen für flüssige Brennstoffe mit Verdampfungsbrenner
raccordés à un conduit évacuation des produits de la und Schornsteinanschluss
combustion
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 46.

If this draft becomes a European Standard, CEN 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.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1:2013: E
worldwide for CEN national Members.

prEN 1:2013 (E)
Contents Page
Foreword .5
1 Scope .6
2 Normative references .6
3 Terms and definitions .6
4 Constructional requirements .8
4.1 Heating capacity .8
4.2 Materials .8
4.3 Combustion chamber .9
4.4 Filter .9
4.5 Oil regulator .9
4.6 Marking of operating settings .9
4.7 Safety device .9
4.8 Fan for the supply of combustion air .9
4.9 Fuel lines .9
4.10 Storage tank . 10
4.11 Oil-level indicator . 10
4.12 Drip tray . 10
4.13 Flue outlet . 10
4.14 Damper . 10
4.15 Draught regulators and combustion air limiters . 10
4.16 Assembly . 11
4.17 Maintenance . 11
4.18 Additional requirements for appliances with automatic burners . 11
4.19 Dangerous substances . 11
5 Performance and operating requirements . 12
5.1 Maximum oil flow . 12
5.2 Minimum oil flow . 12
5.3 Ignition . 12
5.4 Appliance classes for efficiency and emissions . 12
5.5 Smoke number . 13
5.6 Flue gas temperature . 13
5.7 Carbon monoxide content of the flue gas . 13
5.8 Oil temperature . 13
5.9 Floor temperature . 13
5.10 Wall temperature . 13
5.11 Temperature of the control knobs . 13
5.12 Draught regulator. 14
5.13 NO and unburnt hydrocarbons (C H ) in the flue gases . 14
X n m
6 Test methods . 14
6.1 Test apparatus . 14
6.1.1 General . 14
6.1.2 Testing of stoves having several possible outlet connections . 15
6.2 Test fuel . 15
6.3 Verification of construction . 16
6.4 Testing of leak-tightness of the fuel circuit . 16
6.5 Operational tests. 16
6.5.1 Short-term tests . 16
6.5.2 Long-term tests . 18
6.5.3 Additional tests . 19
6.5.4 Measurement methods . 20
prEN 1:2013 (E)
6.6 Calculations from the measurements . 20
6.6.1 Efficiency . 20
6.6.2 Heating capacities . 21
6.6.3 Carbon monoxide content of the flue gases . 21
6.6.4 NOX in the flue gas . 22
6.6.5 Unburnt hydrocarbons in the flue gas . 22
6.6.6 Flue gas mass flow rate . 23
6.6.7 Symbols and units . 23
6.7 Test report . 24
7 Marking and instructions . 25
7.1 General . 25
7.2 Installation instructions . 25
7.3 User operating instructions. 26
7.4 Marking . 27
7.5 Documentation for the production . 27
8 Assessment and verification of constancy of performance - AVCP . 27
8.1 General . 27
8.2 Type testing . 28
8.2.1 General . 28
8.2.2 Test samples, testing and compliance criteria . 28
8.2.3 Test reports . 29
8.2.4 Shared other party results . 29
8.2.5 Cascading determination of the product type results . 30
8.3 Factory production control (FPC) . 31
8.3.1 General . 31
8.3.2 Requirements . 31
8.3.3 Product specific requirements . 35
8.3.4 Procedure for modifications. 36
8.3.5 One-off products, pre-production products (e.g. prototypes) and products produced in
very low quantity . 36
Annex A (normative) Measuring method for determining the smoke number . 37
A.1 Equipment required for the determination of the smoke number . 37
A.1.1 Pump . 37
A.1.2 Sampling tube . 37
A.1.3 Filter paper . 37
A.1.4 Grey scale . 37
A.2 Determination of the smoke number . 37
Annex B (normative)  Fluid method for detecting oil derivatives . 39
B.1 Equipment required for the detection of oil derivatives . 39
B.1.1 Pump . 39
B.1.2 Sampling tube . 39
B.1.3 Filter paper . 39
B.1.4 Fluid . 39
B.1.5 Sampling. 39
B.1.6 Procedure and evaluation. 39
Annex C (normative) Measurement of nitrogen oxides . 50
C.1 General objective and applicability . 50
C.2 General procedure . 50
C.3 Measuring principles of analysers . 51
C.3.1 Chemoluminiscence method . 51
C.3.2 Non-dispersive infrared (NDIR) method . 52
Annex D (normative) Measurement of total hydrocarbons (THC) . 53
D.1 General objective and applicability . 53
D.2 General procedure . 53
D.3 Equipment . 53
prEN 1:2013 (E)
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive . 54
ZA.1 Scope and relevant characteristics . 54
ZA.2 Procedure for AVCP of flued oil stoves with vaporizing burners . 55
ZA.2.1 System(s) of AVCP . 55
ZA.2.2 Declaration of performance (DoP) . 56
ZA.3 CE marking and labelling . 60

prEN 1:2013 (E)
Foreword
This document (prEN 1:2013) has been prepared by Technical Committee CEN/TC 46 “Fireplaces for liquid
fuels”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document supersedes EN 1:1998.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA which is an integral part of this document.
This standard specifies the constructional and operating requirements, conditions for functional testing, and
marking and instructions for flued oil stoves with vaporizing burners.
prEN 1:2013 (E)
1 Scope
This European Standard applies to flued oil stoves with one or more vaporizing burners (hereafter referred to
as "stoves") as used for individual heating in the domestic field and having either a draught regulator or a
combustion air limiter as defined in 3.13 and a nominal heating capacity of not more than 15 kW.
This standard also applies to appliances with fan assisted vaporizing burners.
This standard does not cover
 Built-in appliances
 appliances equipped with an atomizing burner
 appliances incorporating a boiler or connected to a water system
According to the type of fuels used in the country of destination, the stoves are supplied for use with either:
 fuel oil with a maximum kinematic viscosity of 6,0 mm²/s at 20 °C
 or kerosene with a flash point of not less than 40 °C.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50165, Electrical equipment of non-electric appliances for household and similar purpose – Safety
requirements
EN 60335-2-102, Household and similar electrical appliances – Safety – Part 2-102: Particular requirements
for gas, oil and solid-fuel burning appliances having electrical connections (IEC 60335-2-102:2004, modified)
ISO 2859 (all parts), Sampling procedures for inspection by attributes
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
flue gas
flue gas is the products of combustion leaving the stove by means of the flue gas outlet
3.2
flue gas mass flow
flue gas mass flow is the mass of flue gas being evacuated over a given period of time
3.3
steady operating condition of the stove
the operating condition of the stove corresponding to a given heat input in which the flue gas temperature in
the measuring sleeve (see figure 3) does not vary by more than 5 K over a period of 15 min
3.4
control device
the control device is a component of the oil regulator for adjusting the oil flow from a closed to a maximum
open position
prEN 1:2013 (E)
3.5
maximum oil flow position
the maximum oil flow position is the control device setting with the maximum oil flow to the burner
3.6
heating gases
heating gases are the combustion gases flowing inside the stove
3.7
minimum oil flow position
the minimum oil flow position is the control device setting with the minimum oil flow to the burner
3.8
nominal heating capacity
the nominal heating capacity is the heating capacity indicated on the rating plate
3.9
storage tank
the storage tank is the part in the stove from which the burner is supplied with fuel
3.10
oil derivatives
oil derivatives are the organic substances which are deposited onto the filter paper when determining the
smoke number
3.11
oil regulator
the oil regulator is a device which ensures an adjustable, constant flow of oil to the burner
3.12
smoke number
smoke number (SN) is the degree of blackening which the soot causes on white filter paper under the
conditions specified in this standard
3.13
combustion air limiter
the combustion air limiter is a device for limiting the combustion air supply
3.14
combustion air conveyor
the combustion air conveyor is a device for conveying the combustion air supply
3.15
combustion chamber
the combustion chamber is the area in the stove where combustion takes place
3.16
vaporizing burner
the vaporizing burner is a burner in which combustion of the fuel occurs under the effect of heat and, together
with the combustion air, forms a combustible fuel vapour/air mixture
3.17
heat input
the amount of heat supplied by the fuel on an hourly basis to the stove, calculated using the calorific value, H
i
of the fuel
3.18
heating capacity
the heating capacity is the useful amount of heat given off hourly by the stove
prEN 1:2013 (E)
3.19
Efficiency
efficiency is the ratio of the actual heating capacity to the related heat input, expressed as a percentage
3.20
ignition device
the ignition device is a built-in device for igniting the fuel vapour/air mixture
3.21
content of NO
X
content of NO in the dry flue gases measured as volume in ppm, calculated as NO , expressed in mg/MJ
X 2
3.22
content of unburnt Hydrocarbons
H ,
content of unburnt hydrocarbons in the dry flue gases measured as volume in ppm, calculated as C
3 8
expressed in mg/MJ
4 Constructional requirements
4.1 Heating capacity
The nominal heating capacity, expressed in kilowatts, shall be:
 selected by the manufacturer;
 verified during the tests;
 indicated on the rating plate.
The nominal heating capacity shall be rounded off to the nearest multiple of 500 W.
4.2 Materials
The quality of the materials as well as the shape and dimensions of the components shall ensure that,
provided the operational procedures are met and with the associated mechanical, chemical and thermal
stresses which occur, the stoves will remain safe and operable over a given period.
The stove shall be fire-resistant and safe to operate, and shall be designed such that
 no visible deformations following the performance tests according to Clause 6 occur;
 it can withstand the stresses arising during normal operation;
 the burner and the stove cannot become heated to create a hazard;
 dangerous accumulations of combustible gases (fuel mixed with air) in the combustion chamber and in
the flues are prevented (for automatically operated burners only);
 gases cannot leak from the stove in dangerous quantities.
The stove shall be made of non-combustible materials except that combustible materials shall be allowed for
the following:
 components of accessories e.g. burner covers, if the parts are fitted outside of the boiler;
 internal components of controls and safety equipment;
 operating handles;
prEN 1:2013 (E)
 electrical equipment.
Component parts of covers, operating, control and safety devices and electrical accessories shall be arranged
in such a way that their surface temperatures, under steady state conditions, do not exceed those specified
either by the manufacturer or in the component part standard.
NOTE Because the entire heat dissipating surfaces of the appliance including the flue spigot/socket and the flue gas
connector are working surfaces, there is no requirement for limiting the surface temperature of the appliance.
4.3 Combustion chamber
The combustion chamber shall be properly sealed and fitted with a device (e.g. lid, door, etc.) which cannot be
locked, and designed to compensate for any excess pressure.
4.4 Filter
The stove shall include at least one filter situated either before or inside the oil regulator and a strainer in the
filling orifice. The filter shall retain particles with a diameter of over 0,25 mm. The filter and strainer shall be
easy to remove and clean.
4.5 Oil regulator
Oil regulators, or equivalent devices, shall maintain the flow of oil reaching the burner at a constant value
corresponding to the setting selected.
The closed and maximum open positions shall each have a limiting stop.
The minimum position shall be clearly marked and be sensed as a resistance that can be overcome
mechanically.
4.6 Marking of operating settings
The control device for the oil regulator shall have clearly visible and permanent markings.
4.7 Safety device
The stove shall have a safety device to prevent overflowing of the oil from the burner.
4.8 Fan for the supply of combustion air
Irrespective of the operating setting of the stove, the supply of combustion air from the fan shall not create
excess pressure in the combustion chamber. The operation of the fan shall be trouble free.
The function of the burner shall be linked with that of the fan. In the event of a failure of the fan, the flow of oil
to the burner shall be either totally interrupted or reduced to a flow such that the smoke number does not
exceed the maximum permissible value for the operation of the burner without the fan.
If the fuel supply to the burner is completely cut off by an electric current failure, then for manually operated
burners (without automatic ignition), when the current is restored, the fuel shall be readmitted to the burner
manually. For automatically operated burners (automatic ignition), when the current is restored, the ignition
without a blow-out shall be ensured.
4.9 Fuel lines
The fuel lines shall not be load-bearing parts of the construction.
The fuel lines shall be resistant to the fuel and shall not exceed the maximum permissible surface
temperatures specified by the manufacturer. Removable fuel lines shall be connected by means of metal
screw threads including at least four engaged threads. The sealing of the parts containing fuel shall be such
prEN 1:2013 (E)
that there is no leakage or seepage. It shall not be possible to remove any component in the oil supply line to
the burner without the use of a tool.
4.10 Storage tank
When the stove includes a storage tank, its effective capacity shall enable operation of the stove for
 at least 10 h in the case of nominal heating capacity < 8 kW and
 at least 8 h in the case of a nominal heating capacity > 8 kW.
The filling orifice of the storage tank shall have a cap.
It shall be possible to cut off the supply of fuel from the storage tank to the burner be means of a shut-off
device fitted before the oil regulator. If it is a rotary device, closing shall be by turning in a clockwise direction.
To ensure that any fire external to the stove is not transmitted to the contents of the built-in storage tank or, if
a fire does occur, its effects are limited by either the tank being made of non-combustible materials e.g. metal
or be enclosed with non-combustible fire resisting materials or construction. Any fuel lines from the tank to the
burner shall also be fire resistant.
The filling orifice of the built-in storage tank shall have a cap and shall be easily accessible and it shall be so
arranged that when filling the tank with fuel it is not possible to ignite the fuel from any hot components.
4.11 Oil-level indicator
Built-in storage tanks shall have an oil-level indicator.
4.12 Drip tray
Any stove incorporating a built-in storage tank shall incorporate a drip tray, below the parts of the stove
containing fuel, for the collection of any spillage, having an edge height of a least 10 mm (inside depth) and
capacity of a least 1 dm³.
4.13 Flue outlet
The flue outlet can be of the push-on or push-in type and shall have a circular cross-section at its end and
permit the attachment of a flue gas pipe, the diameter of which compiles with the applicable standards of the
country in which the stove is to be installed.
It shall be possible to fit a flue pipe, having a diameter D in a length D/4, but at least 30 mm, onto or into the
flue outlet.
4.14 Damper
Dampers or other movable devices for restricting the flow of flue gases are not permitted.
4.15 Draught regulators and combustion air limiters
Draught regulators shall be able to be set in a permanent manner at the maximum draught indicated by the
manufacturer. This value shall be given in the installation instructions.
Draught regulators and combustion air limiters built into the stove shall be fitted at the manufacturers' works
and shall operate automatically.
One of these two devices shall be fitted if the stove has no fan for the supply of combustion air.
prEN 1:2013 (E)
4.16 Assembly
The stove shall be supplied by the manufacturer with all parts assembled; the flue outlets and burner rings
may be built in subsequently. Non-removable parts shall be securely fitted in their position of use. For
removable parts, see 7.2.
4.17 Maintenance
Parts which are removable to allow for maintenance and cleaning shall be readily accessible and designed so
that they can be correctly reassembled in accordance with the manufacturer’s instructions.
4.18 Additional requirements for appliances with automatic burners
The burner and control system in combination shall be such that, in the event of failure to ignite when starting,
the burner will assume a safe condition (lock-out) and will require a manual reset of its sequencing control. In
the event of a flame failure occurring when running, the appliance shall fail safe.
A temperature or pressure sensing device shall be provided on the appliance to start and stop the burner. In
addition, a separately operating limiting device shall be provided to stop the burner before the temperature in
the appliance exceeds safe limits.
Controls and safety devices shall be coupled so that operation of each occurs in the correct sequence and
timing; coupling may be electrical or mechanical. The controls and safety devices shall:
a) ensure that the start-up sequence is not able to commence unless the flame sensing equipment has
confirmed the no-flame condition;
b) establish satisfactory ignition of the oil;
c) maintain normal operation if the flame is satisfactorily established, and switch off ignitor;
d) automatically vary the burner firing rate, where applicable;
e) stop the burner when the demand for heat is satisfied;
f) stop the oil supply and lock-out system if flame is not satisfactorily established;
g) provide means for a visible or audible indication that the unit is in a lock-out condition;
h) ensure that any interruption of the electricity supply does not give rise to a dangerous condition.
If the control sequences are such that an attempt to re-ignite the burner can be made the burner shall either:
i. ignite and burn in a safe manner whilst the surplus oil is burnt off and the burner is returning to
normal operation conditions; or
ii. not ignite.
Manually operated dampers or other movable devices for restricting the flow of gases shall not be fitted.
Automatically operated dampers, if fitted, shall be interlocked with the fuel supply and arranged so that the
burner cannot operate with a closed flue.
4.19 Dangerous substances
National regulations on dangerous substances may require verification and declaration on release and
sometimes content of dangerous substances when construction products covered by this standard are placed
in those markets.
prEN 1:2013 (E)
In the absence of European test methods verification and declaration on release / content should be done
taking into account national provisions in the place of use.
NOTE An informative database covering European and national provisions on dangerous substances is available at
the Construction web site on EUROPA (accessed through http://ec.europa.eu/enterprise/construction/cpd-ds/index.cfm .)
5 Performance and operating requirements
Under the test conditions given in clause 6, the following requirements shall be met:
5.1  Maximum oil flow
With the control device in the maximum position, the heating capacity shall be equal to, or greater than, the
nominal heating capacity.
5.2 Minimum oil flow
With the control device in the minimum position, the average hourly oil flow shall not exceed one third of the
nominal flow at nominal heating capacity. Stoves having a maximum flow of 0,200 kg/h in the minimum
setting are excluded from this requirement.
If the control device of oil-fired heating appliances is reduced by hand, the maximal rate shall not be more
than 50 % of the oil rate per hour at nominal heat input.
5.3 Ignition
It shall be possible easily to light the burner from cold following the manufacturer’s operating instructions.
5.4 Appliance classes for efficiency and emissions
The requirements of Table 1 shall be fulfilled as appropriate to the appliance class.
Table 1 – Appliance Classes
Appliance CO C H NO Efficiency at nominal Smoke number
n m x
Class mg/MJ heat output
mg/MJ mg/MJ
%
appliances appliances Gas oil Kerosene
< 4 kW ≥ 4 kW
a
1 20 6 35 78 81 1 1
b
2 400   75 75 2 2
b
3 400 75 75 3 2
 
b
4 400   70 70 3 2
b
5 400   60 60  
a
measured at nominal heat output and low rate only
b
measured in the whole heat output range

NOTE 1 National regulations might request the statement of efficiency values as well as the class. Therefore in these
cases it is allowed to state the efficiency value in addition on the data plate and/or in the technical information (see 7.4).
NOTE 2 National regulations might request the statement of efficiency values in addition to these measured at nominal
heat output.
prEN 1:2013 (E)
5.5 Smoke number
For appliances of the classes 1, 2 and 3 according to Table 1, in the whole heat output range the smoke
number shall not exceed 3 for gas oil and 2 for kerosene. For appliances of class 1 according to Table 1, at
nominal heat output and at low rate only the smoke number shall not exceed 1 for both gas oil and kerosene.
The flue gases shall not contain oil rest particles.
Under the test conditions of 6.5.1.2, 6.5.1.4 and 6.5.3.1 for gas oil, the smoke number may be one more.
5.6 Flue gas temperature
During the tests, the flue gas temperature shall not be less than 90 K, nor more than 350 K, above the
ambient temperature.
5.7 Carbon monoxide content of the flue gas
The emission of carbon monoxide (CO) in the flue gases, of an amount of fuel corresponding to 1 MJ (based
), shall not exceed the value of 0,4 g/MJ at all rates of operation.
on H
i
This value shall be calculated as the mean value from the tests as described in 6.5.2.1, 6.5.2.2 and 6.5.3.2.
In addition for appliances of class 1 according to Table 1, the content of CO measured at nominal heat output
and at low rate shall not exceed 20 mg/MJ.
5.8 Oil temperature
The temperature of the fuel in the built-in storage tank and oil regulator shall not exceed 20 K above ambient
temperature for fuel oil, or 15 K above ambient temperature for kerosene.
5.9 Floor temperature
The surface temperatures of the underside of the drip tray shall not exceed 45 K above ambient temperature
when using fuel oil, or 35 K above ambient temperature when using kerosene.
The surface temperatures of the floor shall not exceed 60 K above ambient temperature.
This requirement is not applicable if the manufacturer states that the appliance shall not be installed on
combustible floor.
5.10 Wall temperature
The surface temperatures of the walls, behind and adjacent to the stove, shall not exceed 60 K above ambient
temperature at the minimum clearances given by the manufacturer in the installation instructions under the
test conditions described in 6.5.
5.11 Temperature of the control knobs
The temperatures of the control knobs on their contact surface shall not exceed ambient temperature by more
than:
 35 K for metals
 45 K for porcelain
 60 K for plastics
This also applies to other similar materials.
prEN 1:2013 (E)
These temperatures may be exceeded if the stove is supplied with an accessory with which it is possible to
operate the adjustment devices easily and without the risk of burning. The tests shall be carried out as
described in 6.5.2.1.
5.12 Draught regulator
EN 60335-2-102 shall apply with the following condition:
The tests described in Clause 19 of EN 60335-2-102:2006 shall not apply for safety relevant circuits when the
mechanical components ensure that any failure or interruption of the electronic circuits does not affect the
safe operation of the appliance.
5.13 NO and unburnt hydrocarbons (C H ) in the flue gases
X n m
In addition for appliances of class 1 only according to Table 1, measured at nominal heat output and at low
rate the content of NO must not exceed 35 mg/MJ and the content of unburnt hydrocarbons must not exceed
x
6 mg/MJ.
6 Test methods
6.1 Test apparatus
6.1.1 General
The stove shall be installed on test apparatus (see Figure B.1) and connected to the test chimney by means of
measuring sleeve (see Figures B.2 and B.3). The test floor and walls together with the accessories shall be as

shown in figures by B.4a, B.4b and B.4c.
The measuring equipment shall meet the following requirements:
CO concentration of flue gases
Continuous recording equipment for determining the CO content with a measuring tolerance of max. ± 0,2 %
by volume.
CO concentration of the flue gases
Continuous recording equipment for determining the CO content with a measuring tolerance of max. ± 0,005
% by volume.
NO -content in the flue gases
x
Continuously recording instrument for the measurement of NO -content with an inaccuracy of maximal ± 5
x
ppm
C H - content in the flue gases
n m
Continuously recording instrument for the measurement of C H -content with an inaccuracy of maximal ± 5
n m
ppm
More information to measurement of nitrogen oxides (NO ) and total hydrocarbons (C H ) are given in
x n m
Annexes C and D.
Temperature measuring devices
Continuous recording equipment for determining the flue gas temperature with a measuring tolerance of max.
± 2,5 K.
prEN 1:2013 (E)
Continuous recording equipment for determining the ambient temperature with a measuring tolerance of max.
± 0,5 K.
Equipment for measuring the fuel temperature in the storage tank and oil regulator, the temperature of the fuel
lines, on the floor, on the underside of the drip tray, the test wall temperatures and the control knobs with a
measuring tolerance of ± 1 K.
Measurement of the draught
Continuous recording equipment for determining the draught during operation and with a measuring tolerance
of max. ± 0,5 Pa.
Measurement of the smoke number
Intermittent recording equipment or manually operated device as shown in annex A for recording at least one
measured value in a 15 min period.
Measurement of the quantity of fuel supplied
Gravimetric measuring process for determining the quantity of fuel supplied using a weighing tank and scale
having a measuring tolerance of ± 10 g and a scale graduation of at least 2 g or an equivalent volumetric
measuring process.
The draught regulator shall be inoperative during the tests. If a locking device is available, this shall be locked
during the tests and unlocked, if necessary, when the stove is installed.
6.1.2 Testing of stoves having several possible outlet connections
If the stove to be tested has several possible outlet connections, the tests described in 6.5.1.1 to 6.5.3.3 shall
be carried out on one outlet connection. For each of the other possible outlet connections, the sort-term tests
as described in 6.5.1 shall be carried out without altering the oil flow in the oil regulator. For all possible outlet
connections, the nominal heating capacity shall be attained and the specifications for operational use as
defined in clause 4 shall be complied with.
6.2 Test fuel
The test fuel used in the tests shall have characteristics corresponding to the average fuel available in the
country of destination. The fuels used are:
2 o 3 o
 fuel oil having a viscosity of (5,0 ± 0,5) mm /s at 20 C and a density of (0,84 ± 0,02) kg/dm at 15 C;
 Kerosene satisfying the regulations valid in the country where the
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