1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 1196:2011Domestic and non-domesticgas-fired air heaters Supplementary requirementsfor condensing air heatersBS EN 1196:2011 BRITISH STANDARDNational forewordThis British St
2、andard is the UK implementation of EN 1196:2011. It supersedes BS EN 1196:1998, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e G S E / 2 0 , N o n - d o m e s t i c s p a c e h e a t e r s ( g a s ) .A list of organizations represented
3、 on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BSI 2011 ISBN 978 0 580 73082 5 ICS 97.100.20 Compliance with a British Standard cannot confer im
4、munity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2011.Amendments issued since publicationDate T e x t a f f e c t e dBS EN 1196:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1196 August 2011 I
5、CS 97.100.20 Supersedes EN 1196:1998English Version Domestic and non-domestic gas-fired air heaters - Supplementary requirements for condensing air heaters Gnrateurs dair chaud usages domestique et non domestique utilisant les combustibles gazeux - Exigences complmentaires pour les gnrateurs dair ch
6、aud condensation Gasbefeuerte Warmluftterzeuger fr den huslichen und den nicht-huslichen Gebrauch - Zustzliche Anforderungen an kondensierende Warmlufterzeuger This European Standard was approved by CEN on 14 July 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
7、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 CEN-CENELEC Management Centre or to any CEN member. This Europ
8、ean 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are
9、 the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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
10、, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Re
11、f. No. EN 1196:2011: EBS EN 1196:2011EN 1196:2011 (E) 2 Contents Foreword . . 31Scope . 42Normative references . 43Terms and definitions . . 44Constructional and design requirements . . 54.1General . . 54.2Materials . . 54.3Access, assembly and disassembly of condensate carrying parts . 54.4Condensa
12、te discharge . 54.5Condensate neutralization system . 54.6Limitation of the combustion products temperature . 65Operational requirements . . 65.1General . . 65.2Draining of condensate . . 65.3Soundness of the condensate-carrying parts . 65.4Composition of the condensate . . 65.5Condensate neutraliza
13、tion system . 65.6Condensate discharge system . 65.7Efficiency . 76Test methods . . 76.1General . . 76.2Draining of condensate . . 76.3Soundness of the condensate-carrying parts . 76.4Composition of the condensate . . 76.5Condensate neutralization system . 86.6Condensate discharge system . 86.7Limit
14、ation of combustion products temperature . 86.8Efficiency . 97Marking and instructions . 97.1Marking . . 97.2Installation instructions . 10Annex A (normative) Determination of the condensing correction factor (S in the efficiency equation) . . 11Annex B (informative) Special categories marketed nati
15、onally or locally . 12Annex C (informative) A-deviations . 19Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directives . 20BS EN 1196:2011EN 1196:2011 (E) 3 Foreword This document (EN 1196:2011) has been prepared by Technical Committee CEN/TC
16、180 “Decentralized gas heating”, 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 February 2012, and conflicting national standards shall be withdrawn at
17、the latest by February 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1196:1998. This document has
18、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. Compared to the former e
19、dition, attention is drawn to the amendment of Annex A and to the expansion of Annex B which reflects the increase in the number of CEN Member States. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Europe
20、an Standard: Austria, Belgium, Bulgaria, Croatia, 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 the
21、 United Kingdom. BS EN 1196:2011EN 1196:2011 (E) 4 1 Scope This European Standard specifies the additional requirements and test methods for gas-fired air heaters which are designed so that water vapour condenses from combustion products. On this subject, it extends the European Standards EN 778 and
22、 EN 1319 for domestic air heaters, and EN 1020 for non-domestic air heaters. This European Standard applies to gas-fired air heaters with or without a fan in the combustion circuit in one of the following constructional types: an integral air heater with at least one condensing heat exchanger; a non
23、-condensing air heater with an integrated additional condensing heat exchanger; a non-condensing air heater, with an integrated additional condensing heat exchanger for the recovery of heat from combustion products and from ventilation air if appropriate. This European Standard covers type-testing o
24、nly. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 778, Domestic gas-
25、fired forced convection air heaters for space heating not exceeding a net heat input of 70 kW, without a fan to assist transportation of combustion air and/or combustion products EN 1020, Non-domestic forced convection gas-fired air heaters for space heating not exceeding a net heat input of 300 kW
26、incorporating a fan to assist transportation of combustion air or combustion products EN 1319, Domestic gas-fired forced convection air heaters for space heating, with fan-assisted burners not exceeding a net heat input of 70 kW 3 Terms and definitions For the purposes of this document, the followin
27、g terms and definitions apply. NOTE They supplement the definitions in the aforementioned air heater standards. 3.1 condensing air heater air heater in which, under normal operating conditions, the water vapour in the combustion products is totally or partially condensed in order to make use of the
28、latent heat in this water vapour for heating purposes 3.2 condensate liquid formed from the combustion products during the condensation process BS EN 1196:2011EN 1196:2011 (E) 5 3.3 condensate collecting device part of the appliance designed to collect the condensate in order that it can be drained
29、4 Constructional and design requirements 4.1 General All parts of the heat exchanger(s) and other parts of the appliance likely to come into contact with condensate under normal operating conditions at thermal equilibrium, shall be constructed from sufficiently corrosion resistant material or shall
30、be sufficiently protected against corrosion, in order to ensure a reasonable life for an appliance that is installed, used and maintained in accordance with the manufacturers instructions. Connections at points where condensation can occur or condensate can be present, shall not give rise to corrosi
31、on. The manufacturer shall provide evidence of evaluation, tests undertaken and/or experience gained to support the claim that the materials used and the construction methods adopted are suitable for the purpose intended. 4.2 Materials Copper and copper based alloys shall not be used for condensate
32、carrying components. 4.3 Access, assembly and disassembly of condensate carrying parts A condensate collecting device or other means provided for condensate formed during normal operation to be continuously drained, shall be constructed in such a way that it can be cleaned in accordance with the man
33、ufacturers instructions. 4.4 Condensate discharge The appliance shall be equipped with one or more condensate drains. Drains within the appliance shall have an internal diameter of at least 13 mm. The main drain for connection to the external drain shall have an internal diameter of at least 18 mm.
34、Condensate drains shall be so designed and arranged that combustion products do not escape via the drains. If the appliance is equipped with a sealed combustion chamber, the condensate formed both in the appliance and in the flue system shall be discharged through one or more condensate drains. The
35、drains for the flue system may be the same as the drains for the appliance. Condensate formed in the flue system shall drain to a purposely-designed drain. Drains for removal of condensate shall be provided with a means, e.g. a water trap or siphon, to prevent leakage of combustion products or combu
36、stion air. If the air heaters condensate outlet is blocked or if a pump for the discharge of condensate fails to operate, the construction shall be such that no hazardous situation can arise when the appliance is operating. 4.5 Condensate neutralization system If the air heater is fitted with a cond
37、ensate neutralization system, this system shall be designed in such a way that the reagents can be exchanged without dismantling any part of the appliance. BS EN 1196:2011EN 1196:2011 (E) 6 4.6 Limitation of the combustion products temperature If the combustion products circuit contains materials th
38、at are likely to be affected by heat, the appliance shall incorporate a device to prevent the combustion products temperature from exceeding the maximum permissible temperature for the materials as declared by the manufacturer. The device for limiting the combustion products temperature shall be fai
39、l-safe in operation, non-adjustable and shall not be accessible without the use of tools. 5 Operational requirements 5.1 General The following requirements complete or replace the requirements given in the air heater standards mentioned in Clause 1. 5.2 Draining of condensate When the appliance is i
40、nstalled in accordance with the test conditions of 6.2, condensate shall only form at the points intended for this purpose and shall be readily drained. Condensate shall not run into parts of the appliance which are not designed for collection and discharge of condensate, neither shall the condensat
41、e interfere with the normal operation of the appliance. 5.3 Soundness of the condensate-carrying parts Condensate shall not leak from the appliance condensate circuit. 5.4 Composition of the condensate If the manufacturer states the chemical composition of the condensate, the measured composition sh
42、all be in accordance with the manufacturers declaration. 5.5 Condensate neutralization system If the air heater is fitted with a condensate neutralization system, the pH value of the neutralized condensate shall not be lower than six. 5.6 Condensate discharge system 5.6.1 Capacity The dimensions of
43、the condensate discharge system or the capacity of a pump for the discharge of condensate shall be such that the maximum amount of condensate that may be formed under extreme conditions, as simulated in 6.6.1, can be drained. 5.6.2 Behaviour in the event of blockage or pump failure Blockage of the c
44、ondensate drain(s) or switching off the pump for the discharge of the condensate shall not lead to concentrations of CO in the combustion products higher than 0,1 %, and spillage of condensate shall not occur before safety shut-down or lock-out occurs. BS EN 1196:2011EN 1196:2011 (E) 7 5.6.3 Soundne
45、ss of the combustion circuit Under the conditions of 6.6.3, a water trap or siphon shall have a water seal of at least 25 mm. 5.6.4 Limitation of combustion products temperature If a device for limiting the combustion products temperature is provided as specified in 4.6, the temperature of the combu
46、stion products measured according to 6.7 shall not exceed the maximum allowable working temperature for the materials of the combustion circuit and the flue materials, specified by the appliance manufacturer. Operation of this device shall cause a non-volatile lock-out. 5.7 Efficiency Under the test
47、 conditions of 6.8, the appliance shall have an efficiency not lower than 90 % (on net calorific value). 6 Test methods 6.1 General Unless otherwise stated, the tests are carried out under the general conditions of test as described by the appropriate standards for domestic and non-domestic air heat
48、ers specified in Clause 1. Special set up conditions required for condensing air heaters are specified below. The reference conditions for the combustion air apply, with a relative humidity of 50 %. Unless otherwise stated, the appliance is fitted with the minimum flue length as stated by the manufa
49、cturer. The temperature of both the air to be heated and the combustion air at the inlet of the appliance shall be maintained at (20 5) C. 6.2 Draining of condensate The appliance is operated continuously for 4 h in a condensing mode at nominal heat input. During and after this running condition, it is checked if the requirements of 4.4 and 5.2 are fulfilled. 6.3 Soundness of the condensate-carrying parts After the test accor
