Bs en 00001 1998 (2008)

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Flued oil stoves with

vaporizing burners

The European Standard EN 1:1998, incorporating amendment A1:2007,

has the status of a British Standard

ICS 91.140.20

Confirmed March 2008

This British Standard, having

been prepared under the

direction of the Engineering

Sector Board, was published

under the authority of the

Standards Board and comes

Amendments issued since publication

17134 29 June 2007 See national foreword

European Committee for StandardizationComite EuropeÂen de NormalisationEuropaÈisches Komitee fuÈr Normung

Central Secretariat: rue de Stassart 36, B-1050 Brussels

 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationalMembers

Ref No EN 1:1998 E

ICS 91.140.20

Descriptors: Heaters, liquid fuel appliances, oil stoves, oil burners, combustion product discharge, definitions, equipment specifications,

performance evaluation, measurements, name plates, technical notices, marking

English version

Flued oil stoves with vaporizing burners

PoeÃles aÁ combustible liquide avec bruÃleurs aÁ

vaporisation raccordeÂs aÁ un conduit d'eÂvacuation

des produits de la combustion

HeizoÈfen fuÈr fluÈssige Brennstoffe mit Verdampfungsbrennern und Schornsteinanschluû

This European Standard was approved by CEN on 26 February 1998

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 Up-to-date lists and bibliographical

references concerning such national standards may be obtained on application to

the Central Secretariat or to any CEN 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

CEN member into its own language and notified to the Central Secretariat has the

same status as the official versions

CEN members are the national standards bodies of Austria, Belgium, Czech

Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,

Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and

United Kingdom

This European Standard has been prepared by

Technical Committee CEN/TC 46, Oil stoves, the

secretariat of which is held by DIN

This European Standard replaces EN 1:1980

This European Standard shall be given the status of

a national standard, either by publication of an

identical text or by endorsement, at the latest by

November 1998, and conflicting national standards

shall be withdrawn at the latest by November 1998

According to the CEN/CENELEC Internal

Regulations, the national standards organizations

of the following countries are bound to implement

this European Standard: Austria, Belgium, Czech

Republic, Denmark, Finland, France, Germany,

Greeze, Iceland, Ireland, Italy, Luxembourg,

Netherlands, Norway, Portugal, Spain, Sweden,

Switzerland and the United Kingdom

Foreword to amendment A1

This document (EN 1:1998/A1:2007) has been

prepared by Technical Committee CEN/TC 46 ‘‘Oil

stoves’’, the secretariat of which is held by DIN

This Amendment to the European Standard

EN 1:1998 shall be given the status of a national

standard, either by publication of an identical text

or by endorsement, at the latest by October 2007,

and conflicting national standards shall be

withdrawn at the latest by January 2009

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(s)

For relationship with EU Directive(s), see

informative Annex ZA, which is an integral part of

this document

According to the CEN/CENELEC Internal

Regulations, the national standards organizations

of the following countries are bound to implement

this European Standard: Austria, Belgium,

Bulgaria, Cyprus, Czech Republic, Denmark,

Estonia, Finland, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland,

Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and United Kingdom

Annex A (normative) Measuring methods for

Annex B (normative) Fluid method for detecting oil

This standard specifies the constructional and

operating requirements, conditions for functional

testing, and marking and instructions for flued oil

stoves with vaporizing burners

1 Scope

!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

This European Standard incorporates by dated or

undated reference, provisions from other

publications These normative references are cited

at the appropriate places in the text and the

publications are listed hereafter For dated

references, subsequent amendments to or revisions

of any of these publications apply to this European

Standard only when incorporated in it by

amendment or revision For undated references the

latest edition of the publication referred to applies

EN 50165, Electrical equipment of non-electric

appliances for household and similar purposes —

Safety requirements.

!EN 60335-2-102:2006 Household and similar

electrical appliances – Safety – Part 2-102:

Particular requirements for gas, oil and solid-fuel

burning appliances having electrical connections

flue gas is the product 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

steady operating condition of the stove the operating condition of the stove corresponding to a given heatinput in which the flue gas temperature in the measuring sleeve (see Figure B.3) does not vary bymore 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

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 capacityindicated 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 determiningthe smoke number

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, Hi of the fuel

3.18

heating capacity

the heating capacity is the useful amount of heat

given off hourly by the stove

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 NOx

content of NOxin the dry flue gases measured as

volume in ppm, calculated as NO2, expressed in

mg/MJ"

4 Constructional requirements4.1 Heating capacity

The nominal heating capacity, expressed inkilowatts, 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 anddimensions 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 tooperate, 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 automaticallyoperated 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;

— 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."

3.22

!

content of unburnt hydrocarbons

content of unburnt hydrocarbons in the dry fluegases measured as volume in ppm, calculated as

C3H8, expressed in mg/MJ"

!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

The sealing of the parts containing fuel shall be suchthat there is no leakage or seepage

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."

!It shall not be possible to remove any component

in the oil supply line to the burner without the use

of a tool."

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

manufacturer's 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

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 thesurplus 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."

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 heatingcapacity Stoves having a maximum flow

of 0,200 kg/h in the minimum setting are excludedfrom this requirement

5 Performance and operating requirements"

!

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

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 CO in the flue gases"

The emission of carbon monoxide (CO) in the flue gases, of an amount of fuel corresponding to 1 MJ

(based on Hi), shall not exceed the value of 0,4 g/MJ

at all rates of operation

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 aboveambient temperature for fuel oil, or 15 K aboveambient temperature for kerosene

5.9 Floor temperature

The surface temperatures of the underside of thedrip 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 aboveambient temperature at the minimum clearances given by the manufacturer in the installation instructions under the test conditions described

in 6.5.

!This requirement is not applicable if the manufacturer states that the appliance shall not be installed adjacent to combustible walls."

Table 1 — Appliance Classes Appliance

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."

!

U

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

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 Electrical safety

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 x and unburnt hydrocarbons (C n H m )

in the flue gases

In addition for appliances of class 1 only according

to Table 1, measured at nominal heat output and at

low rate the content of NOx must not exceed

35 mg/MJ and the content of unburnt hydrocarbons

must not exceed 6 mg/MJ."

6 Tests

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:

CO2concentration of flue gases

Continuous recording equipment for determining

the CO2 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

Temperature measuring devices

Continuous recording equipment for determiningthe flue gas temperature with a measuring tolerance of max ±2,5 K

Continuous recording equipment for determiningthe 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 thedrip tray, the test wall temperatures and the control knobs with a measuring tolerance of ±1 K

Measurement of the draught

Continuous recording equipment for determiningthe 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 tankand scale having a measuring tolerance of ± 10 g and

a scale graduation of at least 2 g or an equivalent volumetric measuring process

Add the following new measurement equipment downstream the measurement equipment for CO in the flue gases:

— NOx-content in the flue gasesContinuously recording instrument for the measurement of NOx-content with an inaccuracy of maximal ±5 ppm

— CnHm-content in the flue gasesContinuously recording instrument for the measurement of CnHm-content with an inaccuracy

of maximal ±5 ppmMore information to measurement of nitrogen oxides (NOx) and total hydrocarbons (CnHm) are given in Annexes C and D

The draught regulator shall be inoperative duringthe tests If a locking device is available, this shall

be locked during the tests and unlocked, ifnecessary, 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

short-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:

— fuel oil having a viscosity of (5,0 ± 0,5) mm2/s

at 20 °C and a density of (0,84 ± 0,02) kg/dm3

at 15 °C;

— kerosene satisfying the regulations valid in the

country where the stove is to be used

The test fuel shall be defined by the following

dimensions, which are given in the test report:

6.3 Verification of construction

By visual inspection or, if necessary, during the

operational tests, it shall be ascertained whether

the requirements given in clause 4 have been met.

6.4 Testing of leak-tightness of the fuel circuit

During the tests, it shall be verified that there is no

leakage or seepage of fuel

6.5 Operational tests

All the tests shall be carried out on a test chimney

(see Figures B.2 and B.3) with the secondary air

device adjusted as specified in 6.5.1 so that the

draught indicated by the manufacturer is attained

at maximum oil flow

Only the test described in 6.5.3.2 may be carried out

either on the test chimney or another chimney

The evacuation of the flue gases from the test room

shall be arranged so that the flow and pressure

conditions of the test chimney are unaffected

The test room temperature shall be between 20 °C

and 30 °C

It shall be verified whether the requirements of

clause 5 have been met.

The tests are carried out after the stove has been

placed in the test device in accordance with the

installation instructions The distance between the

test wall and the apparatus wall containing the flue

gas evacuation duct shall not exceed 300 mm The

test side wall shall be located opposite the hottest point of the stove

6.5.1 Short-term tests

Before the short-term tests are carried out the control device of the oil regulator is adjusted to the maximum oil flow rate position and it is determined whether the required heating capacity has been reached

Otherwise, the oil supply to the burner shall be corrected by varying the flow at the oil regulator During the tests, the secondary air device of the test chimney is adjusted so that it is possible to attainthe draught indicated by the manufacturer at maximum oil flow

No further correction of the secondary air device position shall be undertaken during the tests.With the above setting of the secondary air device being maintained, the control device is adjusted to minimum oil flow rate and it is determined whether

the oil flow meets the requirements of 5.2

Otherwise, the oil supply to the burner shall be corrected by varying the flow at the oil regulator.Modifications of oil rate are not allowed during the tests

6.5.1.1 Maximum oil flow rate

The control device shall be set at the maximum position

When steady operating conditions have been reached, the test begins and lasts for a period of 2 h.The following values shall be measured or

— Flue gas temperature (tf);

— CO concentration of flue gases (CO);

— CO2 concentration of flue gases (CO2);

— Efficiency (½);

— Heating capacity (P);

— CO quantity in flue gas (CO)

The mean values for the quantity of fuel supplied

(D), efficiency (½) and heating capacity (P) from the

two hour test shall be given

6.5.1.2 Change from the maximum to the minimum

oil flow rate

The control device is moved from the maximum position to the minimum position

— Density at 15 °C kg/m3;

— Viscosity at 20 °C mm2/s;

— Carbon content % by mass;

— Hydrogen content % by mass;

— Sulfur content % by mass;

— Calorific value Hi kJ/kg

Thirty minutes after the change, the following

values shall be measured:

Draught (d);

Smoke number (RZ);

Oil derivatives (B).

6.5.1.3 Minimum oil flow rate

The control device remains in the minimum

position

When steady operating conditions have been

reached, the test begins and lasts for a period of 2 h

The following values shall be measured or

— Flue gas temperature (tf);

— CO concentration of the flue gases (CO);

— CO quantity in flue gas (CO)

The mean value for the quantity of fuel supplied

form the two hour test shall be given

6.5.1.4 Change from the minimum to the maximum

oil flow rate

The control device is moved from the minimum to

the maximum position

Thirty minutes after the change, the following

values shall be measured:

— Draught (d);

— Smoke number (RZ);

— Oil derivatives (B).

6.5.1.5 Maximum oil flow rate (Repeat tests)

The control device remains in the maximum

position

The test begins immediately after the test described

in 6.5.1.4 and lasts for a period of 1½ h.

The same values as in 6.5.1.1 shall be measured or

determined

6.5.2 Long-term tests

6.5.2.1 Maximum oil flow rate

The control device is set to the maximum position

When steady operating conditions have been

reached, the stove shall be operated or the control

device shall be set so that the nominal heating

capacity is maintained

The test lasts for a period of 6 h

The following values shall be measured or

— Flue gas temperature (tf);

— CO concentration of flue gases (CO);

— CO2concentration of flue gases (CO2);

— Efficiency (½);

— Heating capacity (P);

— CO quantity in flue gas (CO);

— !NOx-content in the flue gases (for class 1 appliances only);

— CnHm-content in the flue gases (for class 1appliances only)."

At the end of the sixth hour of the test, the followingshall be measured:

— temperature of the fuel in the storage tank and oil regulator;

— temperature of the floor and underside of the drip tray;

— temperature of the test walls behind and adjacent to the stove;

— temperature of the control knobs

6.5.2.2 Minimum oil flow rate

The control device is placed in the minimum position

When steady operating conditions have been reached, the stove shall be operated or the control device positioned so that the fuel supplied is less than or equal to a of the fuel supply at nominal heating capacity or less than or equal to 0,200 kg/h.Automatically regulated stoves shall be operated so that the fuel supplied does not exceed 50 % of that

at nominal heating capacity

The test then lasts for a period of 6 h

The following values shall be measured or determined:

— Draught (d);

— Quantity of fuel supplied (D);

— Smoke number (RZ);

— Oil derivatives (B);

— Flue gas temperature (tf);

— CO concentration of flue gas (CO);

— CO2concentration of flue gas (CO2);

— CO quantity in flue gas (CO);

— !NOx-content in the flue gases (for class 1 appliances only);

— CnHm-content in the flue gases (for class 1appliances only)."

6.5.3 Additional tests

6.5.3.1 Intermediate oil flow rates

The total range of the rate of fuel supply between

the maximum and the minimum is divided into

three approximately equal ranges

For each of the two intermediate positions of the

control device thus defined, after steady operating

conditions are attained, a 60 min test is carried out

and the following values are measured or

— Flue gas temperature (tf);

— CO concentration of flue gas (CO);

— CO2concentration of flue gas (CO2);

— CO quantity in flue gas (CO)

6.5.3.2 Test with burner flooded

With the storage tank full, the control device is set

at the maximum position During a period of at least

12 h, the fuel shall not have spilled out of the burner

housing The oil level is then measured in the

burner housing The distance between the oil level

in the burner and the underside row of perforations

in the burner housing wall shall not be less

than 4 mm

The oil regulator is then set at the closed position,

the stove is connected to a chimney and the fuel

which is in the burner is ignited and burnt off The

draught shall not exceed 0,3 mbar

Up to the end of the test, no flames, soot or

combustion gases shall escape from the stove into

the test room and the burner shall not show any

perceptible deformation

6.5.3.3 Stoves fitted with combustion fans

It shall be verified during the operational tests that

no combustion products are emitted into the room

and, in the event of a fan failure, the requirements

in 4.8 are met.

6.5.3.4 Stoves with two burners

If simultaneous operation of both burners is

possible, the maximum oil flow rate tests shall be

carried out as in the case of a stove with one burner

For the minimum oil flow rate test, only one of the

burners shall be used at its minimum oil flow rate

6.5.4 Measurement methods 6.5.4.1 Ambient temperature

The ambient temperature is measured at a height

of 1,5 m and at a minimum distance of 3 m from the stove, with a freely suspended thermometer shielded against heat radiation

6.5.4.2 Smoke number and oil derivatives

During the tests described in 6.5, the smoke

numbers and oil derivatives are determined at least every 15 min; the evaluation method is described in Annex A for the smoke number and in Annex B for the oil derivatives

6.5.4.3 Temperature of the fuel in the storage tank

The temperature of the fuel shall be measured 2 cm above the bottom of the storage tank

6.6 Calculations from the measurements

6.6.1 Efficiency

6.6.1.1 The losses shall be determined from the

mean values of the flue gas and ambient temperatures together with the flue gas analysis during testing The efficiency at nominal heating capacity is determined from these losses

When determining these losses, the latent heat losses, being usually very small, may be disregarded

6.6.1.2 Losses of sensible heat in the flue gases.

or as a percentage of the calorific value Hi of the test fuel

Where Q and cpm are expressed in corresponding units (e.g in kJ/kg and kJ/m3·K)

6.6.1.3 Efficiency as a percentage.

½ = 100 – q

6.6.2 Heating capacities

The various heating capacities P shall be calculated

in kW on the basis of the quantity M of fuel burned

in 1 h, the calorific value Hi of the test fuel and the efficiency ½:

=

P = 100 3 600 -M H×× i×½

6.6.3 Carbon monoxide content of the flue gases

The analysis of the flue gases shall be carried out

and the average volumetric CO2 and CO contents of

the dry flue gases, as a percentage, shall be

determined during the operational tests

The carbon monoxide quantity in flue gases (CO) is

determined in g/MJ at the maximum oil flow rate by

means of the following formula (numerical value

For all other oil flow rates, the carbon monoxide

quantity CO, in g/MJ, is given by the following

formula (numerical value equation):

6.6.4 NO x in the flue gas

!

During the tests at nominal heat output 6.5.2.1 and

at low rate 6.5.2.2, the flue gas composition and the

mean NOx-content in the flue gases (in ppm) shall

be measured

The NOx-content in the flue gases in (mg/MJ) shall

be calculated by the following equations:

Where:

NOTE The analysed values for the test oil can be used.

6.6.5 Unburnt hydrocarbons in the flue gas

During the tests at nominal heat output 6.5.2.1 and

at low rate 6.5.2.2, the flue gas composition and the

mean CnHm-content in the flue gases (in ppm) shall

be measured

The content of the unburnt hydrocarbons (CnHm) inthe flue gases (in mg/MJ) as propane-equivalentshall be calculated by the following equation:

×

=

CO 47 COCO

2 -

×

=

CO 47 (COCO)1

2( )1

NOxref NOx — value in mg/MJ corrected

according reference conditions for air humidity of 10 g/kg and room

hmeas measured air humidity in g/kg dry air

during the NOxppm measurement (between 5 and 15 g/kg)

tmeas measured combustion air

temperature in °C during the NOxppmmeasurement (between 15 and 30 °C)

Nmeas measured nitrogen content (N) in the

oil in mg/kg2,056 Specific gravity of NO2 in kg/m³

Hi net calorific value of the

oil = 11,86*3,6 MJ/kg (mean value)

VA,th,tr,min Theoretical flue gas volume,

dry = 10,46 m³/kg (mean value)

Nref Reference value for nitrogen content

(N) in the oil = 140 mg/kg (mean value)

CnHm Value of unburnt Hydrocarbons

(CnHm) in the flue gases as equivalent in mg/MJ

6.6.6 Flue gas mass flow rate

!

6.6.7 Symbols and units

In the above formulae (numerical value equations):

6.7 Test report

Each page of the test report shall be numbered consecutively and shall specify the results of thetestwork and any other additional information and shall contain at least the following details

concerning the testwork undertaken on the appliance:

a) name and address of the appliance manufacturer;

b) name, serial number and description of the appliance;

c) statement describing whether the materials, design and construction requirements specified in

Clause 4 are met or failed, supported by actual

measured values of dimensions, thicknesses, etc together with certificates as appropriate;

d) statement describing whether the performance

and operating requirements specified in Clause 5

are met or failed, supported by detailed test

results as specified in Clause 6;

e) statement describing whether the installation and operating instructions comply with the

requirements specified in Clause 7;

f) copy of the marking information given on the appliance, and a statement whether the markinginformation complies with the requirements

specified in Clause 8;

g) name and address of the test laboratory;h) unique serial number for the report;

i) date of issue of the report;

j) signature and legible name of the person takingresponsibility for the content of the report;k) analysis and specifications of the test fuels usedduring the testwork."

MHC Mol mass of unburnt Hydrocarbons

(CnHm) in the flue gases = 36,75

kg/kmol (mean value)

CHmeas measured mean CnHm-content in the

flue gases in ppm

C is the carbon concentration

of the test fuel percentage by mass (%)

CO is the carbon monoxide

concentration of the flue gas

at maximum oil flow rate

percentage

by mass (%)

CO2 is the carbon dioxide

concentration of the flue gas

at maximum oil flow rate

percentage

by mass (%)(CO)1 is the carbon monoxide

concentration of the flue gas

at a given oil flow rate

percentage

by mass (%)(CO2)1 is the carbon dioxide

concentration of the flue gas

at a given oil flow rate

percentage

by mass (%)

CO is the carbon monoxide

quantity in flue gas g/MJ

D1 is the fuel supplied at a

given oil flow rate kg/h

Dmax is the fuel supplied at

maximum oil flow rate kg/h

Hi is the lower calorific value

Q is the loss of sensible heat

in the flue gas per unit

mass of the test fuel

kJ/kg

q is the percentage of losses of

sensible heat in the flue gas

Q, in relation to the calorific

value Hiof the test fuel

percentage (%)

½ is the efficiency of the stove percentage

×+

=

cpm is the specific heat of the

wet flue gas as a function ofits temperature and composition (standardized value) (see Figure B.5)

"

7 Instructions and marking of the

appliance

!

7.1 General

Instructions written in the language of the country

of intended destination shall accompany the

appliance and shall describe the installation,

operation, maintenance and, if assembled on site,

the assembly of the appliance The instructions

shall not be in contradiction to the requirements or

test results according to Clauses 4, 5 and 6 of this

standard

7.2 Installation instructions

The installation instructions shall contain at least

the following information:

— staement to the fact that all local regulations,

including those relating to national and European

Standards need to be complied with when

installing the appliance;

— type (model or number) of the appliance;

— class of the appliance after Table 1 with the

number of this European Standard like: flued oil

— safety clearances against combustible

materials, and the other protective measures that

shall be taken to protect the building

construction;

— requirements for the supply of combustion air,

for the simultaneous operation with other

appliances and for the operation of exhaust air

devices;

NOTE Extractor fans when operating in the same room or

space as the appliance, may cause problems.

— need of any air inlet grilles to be so positioned

that they are not liable to blockage;

— mass of the appliance in kg;

— minimum flue draught (in Pa) for nominal heat

output;

— flue gas mass flow in g/s;

— whether the appliance is suitable for

installation in a shared flue system;

— flue gas temperature directly downstream of

the flue spigot/socket in °C, under nominal heat

output conditions;

— appliance shall be installed on floors with an adequate load-bearing capacity If an existingconstruction doesn’t meet this prerequisite, suitable measures (e.g load distributing plate)shall be taken to achieve it;

— advice on the need to provide access for cleaning the appliance, the flue gas connector and the chimney flue;

— installation of the damper device, if applicable;

— assembly of the appliance on-site, if applicable

7.3 User operating instructions

The operating instructions shall contain at least the following information:

— statement to the fact that all local regulations, including those referring to national and

European Standards need to be complied withwhen installing the appliance;

— kind of fuel (appropriate commercial identification of the country of destination);

— details of the method of refuelling the appliance and the maximum filling height andtypical refuelling intervals at nominal heatoutput;

— description of the correct instructions for safe and efficient operation of the appliance including the ignition procedure;

— advice on the purity of the air;

— advice on the measure to reignition after safety shutdown;

— advice on the maximum working pressure

of oil downstream the oil regulating device from 300 mbar with integrated oil container;

— advice that a flued oil stove with feed pressure limiter with locking is lock-out release when the maximum feed pressure in the chimney given bythe manufacturer is exceeded;

— operation of all adjusting devices, dampers and controls;

— ventilation requirements for simultaneous operation with other heating appliances, where applicable;

— correct operations for seasonal use and underadverse flue draught or adverse weather conditions;

— advice on the need for regular maintenance by

a competent engineer;

— advice on the adequate provision of combustion and ventilation air and on keeping air intakegrilles; supplying combustion air, free fromblockage;"

— warning advice: ‘‘Don’t ignite the flued oil stove

in a warm condition’’;

— !instructions on simple fault finding and the

procedure for the safe shut down of the appliance

in event of malfunction e.g overheating;

— warning that parts of the appliance, especially

the external surfaces, will be hot to touch when in

operation and due care will need to be taken;

— means of protection against risk of fire in and

outside the heat radiation area;

— need for regular cleaning of the appliance, of

the flue gas connector and the chimney;

— warning against any unauthorised

modification of the appliance;

— instructions on how to achieve slow

combustion;

— use of only replacement parts recommended by

the manufacturer;

— advice about the actions to be taken in the

event of a chimney fire;

— whether the appliance is suitable for

installation in a shared flue system

7.4 Marking

Each appliance shall be permanently and legibly

marked, with the minimum following information,

in a place where it is accessible so that the

information can be read when the appliance is in its

final location:

— manufacturer’s name or registered trade mark;

— type or model;

— class of the appliance after Table 1 with the

number of this European Standard like: flued oil

stove EN 1 — class x;

— nominal output in kW, from (lowest) kW to

(highest) kW or W;

— minimum clearance distances from

combustible materials, in mm, as appropriate;

— instruction ‘‘follow the user’s instructions’’;

— kind of fuel (appropriate commercial

identification of the country of destination);

— test marks, if applicable

NOTE For CE marking refer to Annex ZA.

This information shall conform to the information of

the installation and operating instructions

If a label is used it shall be durable and abrasion

proof Under normal operating conditions, the label

shall not discolour, thus making the information

difficult to read Self-adhesive labels shall not

become detached as a result of moisture or

temperature

7.5 Documentation for the production

The characteristics and particulars for the decision

guidance of the initial type testing (see 8.2.1) or —

modification at the fireplace — further type testing

(see 8.2.2) of the group or family of appliances shall

be documented One copy of the decision guidance of the characteristics and particulars is in the

documentation for the production for each fireplace

8 Evaluation of conformity8.1 General

The compliance of fuel oil stoves with the requirements of this standard and with the stated values (including classes) shall be demonstrated by:

— initial type testing according to test

requirements in Clause 6;

— factory production control by the manufacturer, including product assessment.For the purposes of testing, appliances may be grouped into families, where it is considered that the selected performance characteristic or characteristics listed below is/are common to all appliances within that family:

8.2.1 Initial type testing

Initial type testing shall be performed to demonstrate conformity to this standard In the case of an appliance already in production the appliance to be tested according to test

requirements in Clause 6 shall be chosen at random

and be representative of general production and the manufacturer shall provide a written declaration to this effect

In the case of a prototype the appliance tested shall

be a model representative of the intended future production and the manufacturer shall provide a written declaration that this is the case

Tests, according to test requirements in Clause 6,

previously performed in accordance with the provisions of this standard (same product, same characteristic(s), test method, sampling procedure,system of attestation of conformity, etc.) may be taken into account In addition, initial type testingshall be performed either at the beginning of the production run of a new oil stove type (unless a member of the same family) or at the beginning of a new method of production (where this may affect"

!the stated performance characteristics) and at

least a check of constructional characteristics on one

further production run appliance of each type over

an on-going period not exceeding 3 years to monitor

consistency of manufacture and conformity to type

For a family or range of appliances it shall be

permissible to test, according to test requirements

in Clause 6, only selected appliances across the

family or range and to only verify selected

constructional and performance characteristics on

the others, subject to a clear decision being made

that the appliances are part of a family or range of

appliances

In deciding that the appliances belong to a family or

range due account shall be taken of the performance

characteristics Tests according to requirements in

Clause 6 previously performed in accordance with

the provisions of this standard (same product, same

characteristic(s), test method, sampling procedure,

system of attestation of conformity, etc.) may also be

taken into account in making the decision

The parameters and characteristics considered in

making the decisions in relation to the family or

range of appliances shall be recorded and a copy

included in the production documentation for each

appliance of the family or range (see 7.3).

For the initial type test at least a sufficient number

of the appliances shall be chosen from across the

family or range so as to represent adequately the

family or range The chosen appliances shall be

subjected to complete testing to fully verify their

compliance with all of the constructional and

performance characteristics in accordance with this

standard For the other appliances in the family or

range not chosen for complete testing it shall be

permissible to only verify selected constructional

and/or performance characteristics to ensure their

compliance with the requirements of this standard

and/or with the fully type tested appliances of the

family or range

8.2.2 Further type testing

Whenever a change occurs in either the appliance

design, the raw material, the supplier of the

components, or the production process, which would

change significantly one or more of the performance

characteristics, the type tests shall be repeated for

the appropriate characteristic(s)

It shall be permissible for this further type testing to

verify only selected constructional and/or

performance characteristics to ensure their

compliance with the requirements of this standard

and/or with the fully type tested appliances of the

family or range

For a family or range of appliances it shall bepermissible to test according to requirements in

Clause 6 only selected appliances across the family

or range and to verify only selected constructional and performance characteristics on the others, subject to a clear decision being made that the appliances are part of a family or range of appliances

In deciding the constructional and/or performance characteristics to be verified or the appliances to be tested (in the case of a family or range of appliances) due account shall be taken of the performance characteristics Tests previously performed in accordance with the provisions of this standard may also be taken into account in making the decision.The parameters and characteristics considered in making either the decisions in relation to the constructional and/or performance characteristics

to be verified or the appliances to be tested (in the case of a family or range of appliances) shall be recorded and a copy included in the production

documentation for each appliance (see 7.3).

8.3 Factory production control (FPC)

8.3.1 General

The manufacturer shall establish, document and maintain a permanent FPC system and identifyareas of responsibility to ensure that the products placed on the market conform with the stated performance characteristics The FPC system shall consist of procedures, regular inspections and tests

according to requirements in Clause 6 and/or

assessments and the use of the results to control raw and other incoming materials or components, equipment, the production process and the product and shall comply with the requirements specified in

8.3.2 to 8.3.8.

NOTE A permanent FPC system conforming to the requirements

of EN ISO 9001, or otherwise equivalent and made specific to the requirements of this standard is considered to satisfy the above requirements.

The manufacturer shall carry out FPC tests to monitor the conformity of the product Sampling, testing or assessment shall be undertaken in accordance with ISO 2859 The results of inspections, tests according to requirements in

Clause 6 or assessments requiring action shall be

recorded, as shall any action taken The action to be taken when control values or criteria are not met shall be recorded

8.3.2 Raw materials and components

The specifications of all incoming raw materials and components shall be appropriate for the intendeduse and shall be documented, as shall the inspection and testing scheme for ensuring the conformity of these materials and components."

8.3.3 Control of inspection, measuring and

test equipment

!

All weighing, measuring and testing equipment

used to demonstrate conformance of the product

shall be calibrated and regularly inspected

according to documented procedures, frequencies

and criteria according to Clause 6.

8.3.4 Process control

The manufacturer shall identify and plan the

production processes, which directly affects the

product characteristics and shall ensure that these

processes are carried out under controlled

conditions Where the required product

characteristics cannot be fully verified by

subsequent inspection and testing of the product,

then the production processes shall be carried out by

operators specifically trained to undertake this

work

8.3.5 Product inspection, testing and

evaluation

8.3.5.1 General

The manufacturer shall establish and maintain

documented procedures for in-process and final

inspection and testing according to Clause 6, as

appropriate to the product type, to ensure that the

stated values of all of the product characteristics are

maintained

At least the following product characteristics, their

criteria and means of control shall be included in the

factory production control scheme

8.3.5.2 Materials and construction

a) Type — composition/specifications

b) Thickness

c) Dimensions

d) Finish

A supplier’s declaration for material type and

properties is accepted, provided that the supplier

has an appropriate factory production control

system to ensure the adequacy, consistency and

accuracy of the material type and properties

8.3.5.3 Insulation material

a) Specification of insulation material

b) Density value — thermal conductivity

A supplier’s declaration for material type and

properties is accepted, provided that the supplier

has an appropriate factory production control

system to ensure the adequacy, consistency and

accuracy of the material type and properties

8.3.5.4 Seals and sealant materials

a) Type — Including identification or composition,when the conformity certificate is not availableb) Dimensions

A supplier’s declaration for material type andproperties is accepted, provided that the supplier has an appropriate factory production controlsystem to ensure the adequacy, consistency and accuracy of the material type and properties

8.3.6 Manufacturing checks 8.3.6.1 Construction and dimensions

Construction and dimensions of critical parts shall

be confirmed during the manufacturing and/or on completion as follows:

a) flue spigot;

b) flueways;

c) burner pot;

d) limiting device for combustion air;

e) limiting device for flue draught;

f) oil regulating device

8.3.6.2 Other checks

At least the following checks shall be carried outduring the manufacturing process:

a) Sealing of components to avoid leakage;

b) Fitment of moving/interconnecting parts

8.3.7 Non conforming products

The manufacturer shall establish and maintain documented procedures to ensure that where theproduct does not conform to the specified

requirements then it is clearly identified and its placing on the market prevented These procedures shall provide for documentation and segregation of the product, wherever practical, and for notification

to the various functions concerned Repaired and/or reworked product shall be re-inspected in

accordance with the inspection, testing and evaluation plan

8.3.8 Corrective and preventive action

The manufacturer shall establish and maintain documented procedures for implementing corrective and preventive action The manufacturer shall implement and record any changes to the documented procedures resulting from corrective and preventive action."

8.3.9 Handling, storage, packaging,

preservation and delivery

!

To the extent necessary to ensure conformity of the

product to the specified requirements the

manufacturer shall establish and maintain

documented procedures for handling, storage,

packaging, preservation and delivery of the finished

product following final inspection and test according

to Clause 6."

Annex A (normative)

Measuring method for determining

the smoke number

A.1 Equipment required for the determination

of the smoke number

A.1.1 Pump

A (hand) pump, by means of which 160 cm3 ± 5 %

may be sucked in a single operation through an

effective filtering surface 6 mm in diameter (i.e

approximately 570 cm3± 5 % per cm2 of effective

filtering surface); the piston stroke of the pump

shall be around 200 mm

The tensioning of the paper fixing device, which is

set in the specified position before the paper is

inserted, shall ensure satisfactory air-tightness for

the reheating operation intended to eliminate

humidity condensation

The distance travelled by the gases from the

sampling point to the filtering surface shall not

exceed 40 cm, except in special chimney conditions,

which are given in the report

A.1.2 Sampling tube

A tube with an internal diameter of 6 mm, allowing

the specifications in A.1.1 to be fulfilled.

A.1.3 Filter paper

Use a filter paper with a reflection factor

of 85 % ± 2,5 % determined photometrically For this

measurement, place the filter paper on a white

surface with a reflection factor of 75 % or more

The passage of clean air through the new filter

paper, at a flow rate of 3 dm3 per minute per cm2 of

effective filtering surface, shall give a pressure drop

of between 0,020 bar and 0,100 bar

A.1.4 Grey scale

The grey scale consists of ten numbered grades

from 0 to 9, scaled in equal intervals from white to

dark grey These grades comprise samples printed

or made by other means on a support made of paper

or plastic with a reflection factor of 85 % ± 2,5 %

determined photometrically

The identification number of each grade is equal to

one-tenth of the reduction rate, expressed as a

percentage of the reflection of the incident light on the corresponding sample The number 0

corresponds to the support paper and the number 6, for example, to a reduction rate of 60 %

The tolerance for the deviations of the reflection factor for each of the points on the scale should not exceed 3 % of its value

If the scale is protected by a transparent plastic cover, it shall be made in such a way that the test spot and the standard grades are observed through the same thickness of protective material The grades of the scale range have a diameter of about 20 mm and a central circular window 6 mm

in diameter

A.2 Determination of the smoke number

Unscrew the paper fixing device, insert the filter paper in the slot provided on the pump and screw up the device

The sampling may be carried out using either a hand pump or an electro-mechanical pump In cases

of dispute, the hand pump measurement shall apply

When a hand pump is used, ten suctions are to becarried out Each suction shall be regular andlast 2 s to 4 s The end of the suction is reached whenthe operator no longer feels the reaction of thepiston

Withdraw the tube from the flue, unscrew the fixing device and withdraw the filter paper with care.Compare the test spot visually with the standard grades by holding the band of filter paper against the back of the standard scale Examine the spotthrough the central window of the standard grades Note the number of the scale whose shade is closest

to that of the test spot For the range of the grey scale between 0 and 4, the intermediate stages are

to be distinguished particularly carefully

An equivalent opto-electronic method of determining the smoke number may be used

Annex B (normative) Fluid method for detecting oil deriva- tives

B.1 Equipment required for the detection of oil derivatives

B.1.1 Pump

A (hand) pump, by means of which 160 cm3 ± 5 % may be sucked in a single operation through an effective filtering surface 6 mm in diameter (i.e approximately 570 cm3 ± 5 % per cm2 of effectivefiltering surface); the piston stroke of the pumpshall be around 200 mm The tensioning of the paper fixing device, which is set in the specified position