EN 461:1999/A1:2004

SLOVENSKI STANDARD
01-junij-2004
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Specification for dedicated liquefied petroleum gas appliances - Flueless non-domestic
space heaters not exceeding 10 kW
Festlegungen für Flüssiggasgeräte - Abzuglose Gewerberaumheizgeräte bis zu 10 kW
Spécifications pour les appareils fonctionnant exclusivement aux gaz de pétrole liquéfiés
- Appareils de chauffage non domestiques non raccordés avec un débit calorifique ne
dépassant pas 10 kW
Ta slovenski standard je istoveten z: EN 461:1999/A1:2004
ICS:
97.100.20
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 461:1999/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2004
ICS 97.100.20
English version
Specification for dedicated liquefied petroleum gas appliances -
Flueless non-domestic space heaters not exceeding 10 kW
Spécifications pour les appareils fonctionnant Festlegungen für Flüssiggasgeräte - Abzuglose
exclusivement aux gaz de pétrole liquéfiés - Appareils de Gewerberaumheizgeräte bis zu 10 kW
chauffage non domestiques non raccordés avec un débit
calorifique ne dépassant pas 10 kW
This amendment A1 modifies the European Standard EN 461:1999; it was approved by CEN on 24 December 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 461:1999/A1:2004: E
worldwide for CEN national Members.

Foreword
This document (EN 461:1999/A1:2004) has been prepared by Technical Committee CEN/TC 181 “Dedicated
liquefied petroleum gas appliances”, the secretariat of which is held by AFNOR.
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 September 2004, and conflicting national standards shall be withdrawn at the
latest by September 2004.
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, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
1 Scope
Delete the whole clause and replace it with the following:
“This European Standard defines requirements and test methods concerning, in particular, the construction, safety
as well as classification and marking of non-domestic flueless space heaters (including greenhouse heaters and
rd
diffusive catalytic combustion heaters), having a nominal heat input not exceeding 10 kW (H ) burning 3 family
s
gases at nominal operating pressure not exceeding 50 mbar, referred to in the body of the text as 'appliances'.
It covers the following types of appliance:
a) fixed heaters;
b) portable or mobile heaters including those that incorporate a compartment for a transportable refillable
liquefied petroleum gas cylinder;
c) heaters intended for use in non domestic areas;
d) heaters intended solely for outdoor use.
NOTE 1 LPG appliances having a nominal heat input not exceeding 4,2 kW and intended for use in domestic premises are
covered by EN 449.
NOTE 2 Overhead radiant heater appliances are covered by EN 416-1.
There are no specific thermal efficiency requirements appropriate to these types of appliances as:
 all the heat produced by the combustion process is released into the space to be heated;
 the requirements with regard to the combustion performance, which is a safety matter, ensure the effective
burning of the fuel gas.
This standard does not apply to appliances which incorporate a fan for either the assistance of combustion or the
circulation of convected air. Neither does it cover appliances incorporating full sequence automatic controls.
This standard does not apply to appliances for heating buildings used for animals rearing (see EN 12669).
Requirements for appliances given in this standard assume that the supply of gas will be controlled by a pressure
regulator giving an outlet pressure as indicated in Table A.1.
Requirements for controls, given herein, relate to controls fitted as part of, or supplied with, particular appliances;
they do not necessarily provide a complete specification for controls intended for general use.
NOTE 3 Catalytic heaters are not considered suitable for use in areas having chemicals present which are likely to prevent
the correct operation of the catalytic pad.
This standard does not cover cylinders for liquefied petroleum gases or their associated regulators, which shall
comply with national requirements in force.
This European Standard only covers type testing.”
2 Normative references
Delete the following references:
EN 161, Automatic shut-off valves for gas burners and gas appliances.
prEN 1763-1, Rubber and plastic tubing and hoses for use with propane and butane in the vapour phase — Part 1:
Requirements for rubber, plastic hoses and tubing — Specification.
3 Terms and definitions
3.34
slip
Delete this definition and replace it with the following:
“3.34
slip
ratio of unburnt fuel gas to total hydrocarbons which have passed through the catalytic pad”
3.43
debit de by pass (French version only)
Delete this definition and replace it with the following:
“3.43
débit de by-pass
débit de gaz à travers le thermostat lorsque le robinet est fermé”
5.3 Materials
rd
Delete the 3 paragraph and replace it with the following:
“Rubber seals shall be made from materials which comply with EN 549 as appropriate.”
th
Delete the 4 paragraph.
5.8.1 Mobile and portables appliances
nd
Insert the following paragraph after the 2 paragraph:
“For appliance to be mounted on a support, which can include wheels, the stability test shall be carried out with the
appliance mounted on this support.”
5.9.1 General
rd
In the 3 paragraph delete the reference to EN 161.
nd th
Delete the 2 sentence in the 8 paragraph and replace it with the following:
“Taps shall be replaceable.”
5.13 Safety devices
Add a new paragraph after the first paragraph:
“Diffusive catalytic combustion heaters shall either be fitted with a low bed temperature cut off device or an
atmospheric sensing device. The devices shall carry a permanent mark of identification.”
5.13.2 Low bed temperature cut-off device
Delete the first paragraph.
5.13.3 Atmosphere sensing device
Remove in the first sentence the words:
"appliances intended for the heating of buildings used for the rearing of livestock".
5.13.4 Automatic shut off valves
Delete this clause.
5.21.1 General
nd
paragraph and replace it with the following:
Delete the 2
“In the event of failure of the ignition device it shall be possible to light the appliance safely by an external source of
ignition.”
rd
Delete the 3 paragraph and replace with the following:
For appliances with a closed combustion chamber the maximum heat input of the main burner during ignition shall
not exceed 5 kW (H ).
s
th
Delete the 7 paragraph and replace it with the following:
“When tested in accordance with 6.21 and in a still atmosphere, ignition shall be ensured correctly, i.e. ignition is
smooth, flames carry across to all ports, flames do not light back or cause excessive noise and where the burner
...