VinduesIndustrien The Association of Danish Window Manufacturers

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2 VinduesIndustrien The Association of Danish Window Manufacturers Secretariat: Kongsvang Allé 37 Bygning Aarhus C Tel.: Annex A of the Technical Requirements for DVV: Technical Requirements for Dansk Rude Verifikation (DRV) - Danish IGU (insulated glazing unit) Verification in accordance with EN 1279, 1st edition, June 2012 Updated VinduesIndustrien Page 2

3 List of content 1. Introduction General requirements General Management System description Storage and production facilities Production equipment and methods Production requirements Glass Spacers Desiccant Inner and outer sealing Gas filling Sash bars Other components Visual quality of IGUss Labelling Requirements concerning mechanical properties Glass dimensioning Tolerances Security glazing Personal safety Requirements concerning thermal properties Product description Documentation Requirements concerning documentation Page 3

4 5.3 Rules for labelling etc Permanent labelling Other labeling Noise reduction properties Environment Quality control (FPC) 8.1 Background General Equipment Raw materials and components Production processes Product testing and evaluation Non-conforming products Traceability Certification requirements Labelling of finished products Internal quality control External inspection Inspection body Inspection visits External inspection type A External inspection type B Reduced external inspection type A and reduced sampling Classification of defects Handling defects Inspection report Additional inspection Extraordinary inspection Annex 1. Consequences of deviations Page 4

5 Annex 2. Internal inspection: Receipt of goods minimum requirements Annex 3. Internal inspection: Types of defects Annex 4. Internal inspection: Production control minimum requirements Annex 5. Internal inspection: Process control of gas-filled IGUs minimum requirements Annex 6. Finished product control Annex 7. Vocabulary Annex 8. Bibliography Annex 9. History Page 5

6 1. Introduction With this product certification for insulating glass units (IGUs), VinduesIndustrien - the Danish Association of Window Manufacturers wants to ensure a basis for CE marking of IGUs in conformity with the Construction Products Regulation (EU) No 305/2011 of 9 th March This product certification is based on EN Glass in building. Insulating glass units Part 5: Evaluation of conformity The aim of the product certification is: To contribute to ensuring the quality of IGUs That affiliated companies comply with the requirements of EN and EN To ensure documentation of the energy-efficient attributes of IGUs. The product certification is based on the current edition of the EN 1279 series, and interpretations hereof will be updated on a step-by-step basis in accordance with legislation and/or the EN 1279 series. In cases of doubt, the English version of EN 1279 will prevail. Page 6

7 2. General requirements 2.1 General Any company wishing to join the product certification scheme must document that expert personnel is available and that it has the production facilities and equipment necessary to manufacture IGUs of a quality and uniformity that comply with the requirements of this certification scheme. Production and products must fulfil the minimum requirements of this certification scheme to be allowed to label finished IGUs with CE marking and the label/logo of the scheme. Cf. item Management The company shall appoint a person to take charge of supervising production and all matters pertaining to the quality of finished products, internal inspection and environmental conditions which implies thorough knowledge of the certification requirements. Also, a person shall be appointed who shall have competence to deal with questions relating to the product certification. 2.3 System description For any production of IGUs, the appurtenant documentation shall exist in the form of system descriptions and documented type tests in accordance with current EN standards. 2.4 Storage and production facilities Companies under the product certification scheme shall ensure suitable storage and production facilities which in no way will impair the quality of raw materials, component parts or finished units. 2.5 Production equipment and methods For companies under the product certification scheme no requirements are made concerning special equipment (machinery etc.) or certain methods for the production of IGUs. The production of IGUs shall be carried out at a minimum temperature of 15 C. Page 7

8 3. Production requirements 3.1 Glass Receipt and storing of glass On receipt of glass, it must be ensured that: There is compliance between ordered and delivered glass, and that the glass is of a quality rendering it suitable for production of IGUs without coatings in accordance with the EN 572 series and of IGUs with coatings in accordance with the EN 1096 series. Adequate documentation is available for the glass to be handled correctly and that the necessary documentation of the finished product can be established. The glass should be stored under dry conditions and be shielded from weathering to prevent the glass from tarnishing. In addition, the glass should be stored and handled in accordance with the supplier s instructions to ensure that the attributes of any thermal coating are not impaired. Supplier s instructions for storage and handling should be available to and known by glass handling staff. Glass cutting The glass is cut according to the choice of glass and measurements upon which the finished dimensions of the IGU are based. It is important that the glass is cut and handled so as not to create any strain in the glass which may cause breakage at a later stage. The cutting edges of the glass must appear free from chippings in accordance with EN or from "cuts" which may cause breakage at a later stage (max. one fourth of the glass thickness). Types of glass Glass must be stored so as to keep the different types of glass separate. To avoid any misunderstandings, each type of glass must carry a distinct marking. Glass cutting staff must be familiar with the individual types of glass. An overview of glass specimens marked with name/type of the glass should be available. Coatings If the glass is soft-coated, any coating in the sealing area should be removed before assembly of the IGU if this is recommended / prescribed by the supplier. The glass supplier s instructions, if any, for the removal of coating in the sealing area must be available to and known by staff carrying out this process. 3.2 Spacers Receipt and storage Compliance between the spacer type ordered and the spacer type delivered must be verified upon receipt, including observance of specified tolerances. Spacers should be stored under dry conditions and shielded from dust and weather in order to avoid dirt and corrosion/weathering. Spacers incorporating desiccants must furthermore be protected so as not to affect the quality of the desiccant. Handling Spacers should be handled so as not to impair the sealant adhesion. Spacer handling staff should therefore wear gloves to avoid smears and grease marks on spacer surfaces. Page 8

9 3.3 Desiccant Receipt and storage Compliance between the desiccant ordered and the desiccant delivered must be verified upon receipt. The desiccant should be stored in a way that will not impair its quality. Processing When applying desiccant to spacer bars, caution must be taken to ensure that the amount of desiccant in the finished pane is in conformity with the system description and sufficient to meet the pane s I-index. Desiccant-filled spacer bars should be used as quickly as practically possible and must not be stored for more than 4 hours without special precautions being taken to prevent moisture absorption of the desiccant and without a prior Δt testing to ensure its continued functioning. 3.4 Inner and outer sealing The inner and outer sealing must be performed in accordance with the system description. Inner seal: Outer seal: A butyl tape or a similar tape must be applied to the spacer so as to ensure gas-tightness and to retain the frame before compression. Dual or single component seal to retain the glass unit and to prevent penetration of water or vapour. 3.5 Gas filling Gas filling of IGUs can be carried out before or after sealing the unit. The process may be carried out either by using gas filling machinery before sealing or manually after sealing. Conformity between customer requirements (in the form of a label on the pane) and the gas filling used must be verified. 3.6 Sash bars The integration of sash bars must not influence the I-index (measured according to EN ) negatively. Furthermore, it must be ensured that application of the specific components is in compliance with the type approvals of the company. 3.7 Other components Other components may be Venetian blinds or other components intended for insertion between the glass panes. Components for insertion in the space between the glass panes may in no way reduce the tightness of the pane as a result of penetration of the edge construction or cause deposition of coatings (chemical condensation) or in any other way affect the visual quality of the pane. 3.8 Visual quality of IGUss As regards the visual quality of IGUs please see Technical Requirements for DVV, Annex 20: Deviations in quality of IGUs. Page 9

10 3.9 Labelling Manufacturers covered by the product certification scheme may provide IGUs with the label/logo of the certification scheme. The label must be visible, permanent and as a minimum indicate: Logo or label of the product certification scheme. The manufacturer s identification number as issued by the certification body. The number of the standard: EN Year and month of manufacturing. Energy data. Cf. item 5.1 Example: DRV XXX EN Ug = 0.82, gg = 0.61, LTg = 0.75, TGI No Requirements concerning mechanical properties 4.1 Glass dimensioning When dimensioning glass, SBI instruction 215:2008 or relevant Eurocodes must be applied. Manufacturers should pay particular attention to possible market specific requirements. 4.2 Tolerances As stated in the company s system description, but maximum values must not exceed those stated in EN Security glazing Resistance against burglary should be determined and classified in accordance with EN Personal safety In case of specified requirements to personal safety, safety glass classified and marked in accordance with EN should be used. Page 10

11 5. Requirements concerning thermal properties 5.0 General Energy data for IGUs shall be stamped in the spacer bar of the unit and be given with an accuracy as stated in point Product description For each type of energy-efficient pane a description must be available which, as a minimum, provides information about: U g value. Thermal transmittance. L eq value. Equivalent thermal conductivity of edge construction. LT g value. Solar transmittance. g g value. Total solar energy transmittance. The product description may be in the form of a document or in electronic form Documentation All data concerning energy-efficient properties of the products should be documented. Documentation requirements comprise thermal data from suppliers and possibly calculation programmes. Requirements concerning documentation are set out in Annexes 2, 4, and 5. Documentation concerning the thermal attributes of the pane type must be verified through testing of panes. Verification of the gas filling rate in accordance with EN Verification of pane s U value in accordance with EN 673. Verification of pane s g value in accordance with EN 410. Extent of testing and inspection activities is set out in Annexes 2, 4, and Requirements concerning documentation Documentation concerning the thermal transmittance of panes, U g, must be available and should be in the form of: Calculations or measurements. Calculation of U g shall be carried out in accordance with EN 673. Measurement of U g shall be carried out in accordance with one of the following methods as set out in EN 674, EN 675 and pren 1098, cf. current edition of DS 418. Documentation of solar transmittance and total solar energy transmittance shall be available in accordance with EN 410. Documentation shall be available for the equivalent thermal conductivity of the edge construction. Documentation of the above should be available in the form of specifications comprising as a minimum: Data for calculation in accordance with EN 673 and EN 410. Edge seals and sealants applied. Spacers with indication of dimensions, materials and desiccant (type and amount). Edges with information about dimensions, materials and surface treatment. Gas filling with information about type of gas. The specifications must include product certificates from an accredited institute for components used or which alternatively may be used in the energy-efficient units. The documentation for calculations as well as measurements must have been approved by an accredited/notified body. Page 11

12 5.3 Rules for labelling etc Permanent labelling The permanent labelling (on the spacer) must at least contain information about: U g value. Thermal transmittance. L eq -værdi. Product name or a code allowing tracing. LT g value. Solar transmittance. g g value. Total solar energy transmittance. The value must be specified with 2 significant digits Other labeling To facilitate the installation, IGUs must carry information of outer/inner side of the unit. This information may be put on the pane label. 6. Noise reduction properties Noise reduction properties should be indicated in accordance with EN 12758: Environment Information must be available concerning contents of dangerous substances mentioned in Articles 31 and 33 of Regulation (EC) No 1907/2006 of 18 December 2006 of the European Parliament and of the Council concerning registration, evaluation, authorization, and restriction of chemicals (REACH). Page 12

13 8. Quality control (FPC) 8.1 Background Pursuant to the Construction Products Regulation and EN the individual company is required to establish, document, and maintain a production control system the Factory Production Control (FPC). The FPC of the company shall comprise procedures, regular inspections, and tests/evaluations and the use of results for inspection of incoming materials or components, production processes, and the finished product. 8.2 General The company must document test/ evaluation results which require corrective or preventive actions. This also applies to decisions made in this connection. The company must appoint a person to take charge of the FPC system at each production site. By means of established procedures for education and training, the company shall ensure that sufficient and qualified staffs are available to deal with production and establishment, documentation and maintenance of the FPC system. If the company has a certified EN ISO 9001 system or other certified quality control system, this is considered to be sufficient. 8.3 Equipment Testing: Weighing, measuring and testing equipment should be calibrated and regularly inspected in accordance with procedures, frequencies and criteria. Production: Equipment which is frequently used in production processes should be inspected and maintained on a regular basis to ensure that use, wear and defects do not result in faults in the production processes. Inspection and maintenance must be carried out and reported in accordance with the written procedures of the company. 8.4 Raw materials and components As regards the finished product, the company shall be able to document specifications of all essential raw materials or components in order for the receipt to be verified to ensure compliance with the specified requirements. 8.5 Production processes The FPC system shall document the various stages of the production process, identify control procedures, and the staffs responsible for control at all stages. Throughout the production process, registrations should be made of all control measures, the results hereof and any corrective action taken. Registrations should be sufficiently detailed and exact to demonstrate that all production phases and control actions have been implemented satisfactorily. Page 13

14 8.6 Product testing and evaluation The company must establish procedures to ensure the maintenance of values laid down for the individual product properties through: Testing or inspection of raw materials or components. Testing or inspection of items or unfinished products during production. Testing or inspection of finished products. Testing or inspection should be carried out and evaluated in compliance with a testing plan established by the company. The plan should also include frequency and criteria. 8.7 Non-conforming products The company should have written procedures specifying how to handle and record non-conforming products, including complaints. 8.8 Traceability Traceability, by means of the labelling of the pane, must be ensured from end-user to suppliers of raw materials via production papers, inspections carried out during the production period, and the raw materials received (glass, butyl, sealants and spacers). The filing period is 12 years for documents related to traceability. 9. Certification requirements A company s membership of the Certification Scheme is conditioned upon the following actions being taken: Type testing Quality control (FPC) External inspection The inspections adopted shall determine the degree of compliance between certification requirements and the finished product and the appurtenant documentation. 9.1 Labelling of finished products Any company which has joined the Certification Scheme has the right to label type approved units with the authorized label of the Certification Scheme. The labelling on the units spacer should be legible and permanent. 9.2 Internal quality control The individual company establishes the production control system best suited for the company which ensures that the production conditions and the units delivered are in compliance with this certification scheme. The minimum requirements for internal inspection are set out in Annexes 2, 4, 5, and 6. A number of units ready for shipment are sampled for inspection on a daily basis. The sampled volume may vary, depending on the internal needs and the volume produced cf. item 10.3, Table 2. Page 14

15 10. External inspection The objective of the external inspection is: Through an impartial and thorough examination of the company s products and conditions of production to assist the company in its efforts to deliver a product which fulfils the requirements of EN and the present basis of certification. The external inspection includes: Sampling and evaluation. Measuring/testing. Examination of the company s FPC system. Examination of technical documentation with regard to performance. Reporting of the individual inspections Inspection body External inspections should be carried out by an accredited body Inspection visits Affiliation to the scheme implies inspection visits to the company at the frequency set out in Table 1. External inspections may be in the form of unannounced visits by the certification body. The inspection is carried out on ordinary working-days. Table 1: Frequency of external inspection and testing Total production in m² per year Type A inspection Type B inspection Samplings per year 5 pane specimens in accordance with EN specimens in accordance with EN > External inspection type A A type A inspection comprises a review of the company s production control, specimens and registrations. In addition, production facilities and control equipment are inspected. As for production of energy-marked glass units, verification must establish that the production is carried out in accordance with the company s production control scheme and that the finished units are in compliance with the current Technical Requirements and the declared properties. At the inspection, 5 IGUs with the measurements 352mm x 502mm x spacer are manufactured. The specimens are tested according to EN The company forwards the samples for testing at an accredited testing institute. The samples are marked as stated in item 3.9. As a minimum once a year, 28 specimens are manufactured and forwarded to an accredited testing institute for testing according to EN Annex A External inspection type B External inspection type B comprises a review of the production and a random sampling of the company s internal inspection. A type B inspection can be replaced by electronic transfer to the inspection body of the internal inspection on a monthly basis. The transfer of data should at least contain documentation for implementing registrations concerning verification of receipt, production control and level of defects. Page 15

16 The inspection body reports the results of the internal inspection at a frequency similar to that of a type B inspection cf. table Reduced external inspection type A and reduced sampling Companies with a documented and implemented quality control system such as ISO9001 adapted for glass unit production may have their external inspection frequency reduced. Reduced inspection implies a halving of the frequency, however, not less than two annual visits. The visits will be type A inspections - and type B if quarterly control documentation has not been forwarded. Reduced external inspection may be granted only after the first year of the certificate, and then provided there have been no deviations from the DRV certification scheme Sampling Table 2: Sampling plan Size of batch: units with the same system description and from the same production line Sample size at end inspection % inspection Limits of acceptance for defective units Critical Kl A Essential Kl B Minor Kl C Ac. Rej. Ac. Rej. Ac. Rej Source: ISO (Ac = accepted, Re = rejected) If the specified Ac values are exceeded, a 100 % inspection of the respective batch is required. The sampling is random so as to include different sizes and types of units. The sampled units should be finished products and be ready for shipment Classification of defects The defects found in the sampling are divided into categories, cf. Annex Handling defects Defects located according to Table B3.1 are dealt with cf. the below guidelines: 1. Critical defects No actual sampling is carried out as there are only two possible results: accepted or rejected. If the sampling shows just one critical defect, it is rejected and an extraordinary inspection is initiated (cf. item 10.8). 2. Essential defects Acceptance limits are shown in the sampling plan in item Minor defects Acceptance limits are shown in the sampling plan in item Page 16

17 10.6 Inspection report After the inspection, the company will receive a report specifying the results. Any registrations of deviations will have the consequences set out in Annex 1. Deviations are handled according to the following procedure: 1. The inspection body describes the deviation. 2. Within a period of 14 days the manufacturer/licensee must describe suggestions for dealing with the deviations and report it to the inspection body. 3. If the inspection body accepts the forwarded suggestions for corrective action, they will be recommended for acceptance. Any registration of deviations will have the consequences as described in Annex Additional inspection A company which does not live up to the requirements of this certification scheme will be subject to additional inspection. The inspection can be either Type A or Type B Extraordinary inspection In case of repeated deviations, the company may be subject to extraordinary inspection, and a continued right to energy-marking will be subject to re-evaluation. Page 17

18 Annex 1. Consequences of deviations Table B1.1: Consequences of deviations Detected deviations Verification of receipt Tests or measurements not fully carried out Product put to use before result of testing was available Tests or measurements carried out but not registered * Production control A few tests not carried out Tests or measurements not carried out during a period Tests or measurements carried out but not registered * Order and tidiness is poor Uncovered glass is stored outside Acclimatization not carried out Finished product control Defined AQL values exceeded and no re-sorting carried out Quality control system Follow-up at next ordinary inspection x x x Extraordinary inspection Type A Type B Calibration of measuring equipment insufficient * X* Lack of training and education of personnel * X* Lack of implementation of system in the x company Insufficient procedures or procedure* X* Laboratory testing Impurities in pane I-Index too high New sampling 1) Amount of desiccant too low New sampling 1) Gas-filling too low New sampling 1) Defect in edge construction New sampling 1) 1 ) The manufacturer is requested to establish the cause of deviation. If new test panes do not fulfil the requirements, the license of the manufacturer will be re-evaluated. * In case of deficiencies at 3 consecutive inspections, the consequence will be as set out in Annex 1. X x x x x x x X Page 18

19 Annex 2. Internal inspection: Receipt of goods minimum requirements All components must be positively evaluated before use in production Table B2.1: Receipt of goods minimum requirements Component Method Requirement Frequency Glass Identification Spacers Visual Documentation from supplier At each receipt of glass Identification Visual Purchase specification Each batch 1 ) Dimensions Measurement Purchase specification One test per type per batch 1 ) Adhesion EN Annex F3 Purchase specification Two tests per type per batch 1 ) Volatile content Weight loss Purchase specification Two tests per type per batch 2 ) Desiccant Identification Visual Purchase specification At each receipt Purchase specification, EN annex K, Activity zeolite however moisture absorption initial H2O 3 % production) 3 ) Weight loss at silica gel Inner seals (Butyl) EN Annex K, drying Purchase specification, however initial H2O 3 % Volatile content Weight loss Purchase specification Outer seals Identification Adhesion to glass Adhesion to spacer Hardness measurements Visual EN Annex F, adhesion test EN Annex F, adhesion test EN Annex E EN Annex F.3.3 EN Annex F.3.3 Data sheet from supplier Volatile content Weight loss Purchase specification Source EN One test of each package (not to be carried out until start of One test of every package (not to be carried out until start of production) 3 ) Two tests per batch and per type 2 ) Two tests per batch and per type 1 ) Two tests per batch and per type 1 ) Two tests per batch and per type 1 ) Two tests per batch and per type 2 ) 1 ) The inspection may be made by the supplier if relevant tests have been carried out and documentation is available. Such a quality contract presumes an audit at the supplier, if required. 2 ) May be replaced by data sheet from supplier. 3 ) Testing method must be in accordance with supplier s directions (e.g. ΔT measurements). Page 19

20 Annex 3. Internal inspection: Types of defects Classification of types of defects Table B3.1: Types of defects Outer surface of seal Critical defects Essential defects Minor defects < X mm Butyl through outer sealing Not accepted W x h of air gap between butyl and outer sealing. Length of air gap = L > w = X mm and > h = X mm/m or > L=Xmm/pane < w = X mm and < h = X mm/m or < =Xmm/pane Butyl inside the pane > 2 mm < 2 mm Butyl interrupted, total > X mm Width of butyl < X mm > X mm Visible rear profile Profile bend Profile shear/centering Internal impurities. Transparency of IGU Excess exterior edge seal from glass edge Profile shear 3 layers Crushed edges Chipping above edge Internal impurities Deviation from flatness Not accepted Not accepted Not accepted > 2 mm > 2 mm 2 mm > 2 mm Classification requirements to the different types of defects must appear from the type testing and the company s own system description X Page 20

21 Annex 4. Internal inspection: Production control minimum requirements Table B4.1: Production control Component/ Process Relating to Method Requirement Frequency Glass Dimension at One test per shift per Measurement Productspecification cutting cutting line Cutting of One test per shift per Measurement Systemdescription energy glass cutting line Spacers Dimension in relation to glass Measurement Productspecification One test per shift Filling/ desiccant Measurement Systemdescription One test at every filler 3 ) Spacers incorporating desiccant Activity/ weight EN ) One test per type per Systemdescription change shift 3 ) Extrusion Measurement 1) One test per type per Productspecification temperature shift 3 ) Desiccant Activity zeolite Weight loss at silicagel EN Annex K EN Annex K Purchase specification, however initial H2O 3% Purchase specification, however initial H2O 3% One test per shift per desiccant filler One test per shift per desiccant filler Outer seal Adhesion EN Annex F EN Annex F.3 or One test per shift per F.4.1 or F.4.2 sealing station 3 ) Mixing ratio Productspecification Productspecification Quality system. Product One test per shift per EN Annex D No marbelling consistency sealing station 3 ) Hardness EN Annex E Produktspecifikation One test per shift per sealing station 3 ) Source EN ) Inspection to be carried out in accordance with supplier s directions. 2 ) Testing method shall be in accordance with supplier s directions (e.g ΔT measurements). 3 ) Further testing is carried out at changes of batch. Page 21

22 Annex 5. Internal inspection: Process control of gas-filled IGUs minimum requirements Table B5.1: Process control gas filling Component/ Process Glass Relating to Method Requirements Frequency Gas-filling Measurement 1 EN Annex A.3 Minimum three tests per shift per filling station ¹) ¹) At a production below 100 units per shift, a minimum of one test per day is carried out. Companies using probe filling only may choose to have the inspection carried out via external inspection as a minimum twice a year. Internal inspection: Process control of energy properties minimum requirements Table B5.2: Process control energy properties, panes Component/ Process Glass Spacers Relating to Method Requirements Frequency Cutting of energy glass Measurement 1) System description Two tests per shift Conformance between specified and actual glass Visual 1) Product specification Two tests per shift Labelling in spacer Visual Product specification Two tests per shift Edge construction in compliance with order specification Visual Product specification Two tests per shift ¹) Inspection may be carried out at the cutting station or on the line. Page 22

23 Annex 6. Finished product control Table B6.1: Finished product control (Example based on an imaginary system description and production) Insulating glass manufacturer Completed product control Year: Amount manufactured: Week: 20 PANES Monday Tuesday Wednesday Thursday Friday Critical defects. AQL 0.65 Accepted 0 > = rejected Outer surface of seal < 3 mm. Butyl through outer sealing Air gap butyl outer sealing >1.5 mm and >50 mm/m or >200 mm/pane Butyl discontinued, total >10 mm Visible profile edge Crushed edges/chippings >¼ glass thickness Glass edge offset/displacement >2 mm No inner/outer labelling. Cf. item Total critical defects Insulating glass manufacturer Essential defects. AQL 4.0 Accepted 2 > = rejected Compliance between pane and label Air gap butyl outer sealing <1.5 mm and <50 mm/m or <200 mm/pane Butyl inside the pane > 2mm Butyl interrupted, total 5-10 mm Width of butyl < 2.0 mm Profile bending inwards > 2 mm Impurities. Deviations in quality of IGUs Depth of joint < 1.5 mm Glass edge offset/displacement 2 mm No DRV marking Total essential defects Completed product control Minor defects. AQL 10.0 Accepted 5 > = rejected Butyl inside the pane < 2 mm Butyl discontinued total < 5 mm/pane Width of butyl > 5 mm Profile displacement (3 layers) < 2 mm Discolored profile Impurities on outer pane, e.g. joint sealant Total minor defects Page 23

24 Annex 7. Vocabulary Accelerated ageing Test method EN Long- term test method and requirements for moisture penetration. Physical properties of seals Test method EN Methods of test for the physical attributes of edge seals. Gas leakage Test method EN Long-term test method and requirements for gas leakage rate and for gas concentration tolerances. I Index Test method EN Long-term test method and requirements for moisture penetration. Solar transmittance The solar transmittance (LT g ) of an IGU designates the ratio between the inflow of light on a surface directly inside and outside the pane. The solar transmittance of the pane is a value for the centre of the pane. The unit is expressed as a percentage. The value of solar transmittance shall apply to an angular incidence of solar light with a spectral distribution as set out in EN 410. Standard conditions In this paper, standard conditions are defined as an outer and inner surface thermal resistance of 0.04 and 0.13 m 2 K/W, respectively, and an outer and inner air temperature of 0º and 20 C, respectively. System description A description of components and a list of suppliers must be available for each type of IGU. Furthermore, there must be a description of the construction of the IGU and the edge seal. This description may be supplemented with a cross-sectional drawing(s) showing measurements of the edge seal, corner joints and, if any, drill holes for applying desiccant. By manual gas filling, filler holes and their diameter must be indicated, and also how to close these holes. The amount of desiccant in the IGU must also be stated. When energy glass is used, the amount of coated glass cut off in the edge zone must be stated. Total solar energy transmittance The total solar energy transmittance (g g ) of a pane indicates its ability to transmit solar energy as solar radiant energy and heat. The total solar energy transmittance is a value for the centre of the pane. The unit is expressed as a percentage. The total solar energy transmittance shall apply to standard conditions and to an angular incidence of solar radiation with a spectral distribution as set out in EN 410. Thermal transmittance (U-value) The thermal transmittance (U g ) of a pane is the value at the centre of the pane. The thermal transmittance through the spacer is disregarded. The unit is W/m 2 K. Type testing Type testing (ITT Initial Type Test) is performed in connection with CE-marking and should be carried out by an accredited laboratory notified to perform type testing. Members are free to choose among laboratories, and the different properties of the panes may be tested at different laboratories. Equivalent thermal conductivity of edge construction The thermal conductivity (shown as L λ ) indicates the thermal conductivity of a homogeneous material of the same geometry and with the same thermal transmittance properties as the spacer with desiccant and sealants. The unit is W/mK. Page 24

25 Annex 8. Bibliography DS 418:2011 EN 356:2002 Calculation of heat loss from buildings Glass in building. Security glazing. Testing and classification of resistance against manual attack Eurocode 1: Loads on building structures. EN 572-1:2004 Glass in building. Basic soda lime Part 1: Definitions and general physical and silicate glass products. mechanical attributes EN 572-2:2004 Glass in building. Basic soda lime silicate glass products. Part 2: Float glass. EN 572-3:2004 Glass in building. Basic soda lime silicate glass products. Part 3: Polished wire glass. EN 572-4:2004 Glass in building. Basic soda lime silicate glass products. Part 4: Drawn sheet glass. EN 572-5:2004 Glass in building. Basic soda lime silicate glass products. Part 5: Patterned glass. EN 572-6:2004 Glass in building. Basic soda lime silicate glass products. Part 6: Wired patterned glass. EN 572-7:2004 Glass in building. Basic soda lime Part 7: Wired or unwired channel shaped silicate glass products. glass. EN 572-8:2004 Glass in building. Basic soda lime silicate glass products. Part 8: Supplied and final cut sizes. EN 572-9:2004 Glass in building. Basic soda lime Part 9: Evaluation of conformity/product silicate glass products. standard. EN 673:2011 Glass in building. Determination of thermal transmittance (U value). Calculation method. EN 674:2011 Glass in building. Determination of thermal transmittance (U value). Method. Guarded hotplate. EN :2012 Glass in building. Coated glass. Part 1: Definitions and classification. EN :2012 Glass in building. Coated glass. Part 2: Requirements and test methods for class A, B and S coatings EN :2004 Glass in building. Coated glass. Part 4: Evaluation of conformity/product standard. EN :2004 Glass in building. Insulating glass Part 1: Generalities, dimensional tolerances units. and rules for the system description. EN /AC: 2006 Glass in building Insulating glass Part 1: Generalities, dimensional tolerances units and rules for the system description. EN :2003 Glass in building. Insulating glass Part 2: Long term test method and units. requirements for moisture penetration. EN :2003 Part 3: Long term test method and Glass in building. Insulating glass requirements for gas leakage rate and for units. gas concentration tolerances. EN :2003 EN : +A2:2010 Glass in building. Insulating glass units. Glass in building. Insulating glass units. Glass in building. Insulating glass units. Part 4: Methods of test for the physical attributes of edge seals. Part 5: Evaluation of conformity. EN :2003 Part 6: Factory production control and periodic tests. EN 12600:2003 Glass in building. Pendulum test. Impact test method and classification for flat glass. ISO :2001 Part 1: Sampling schemes indexed by Sampling procedures for inspection acceptance quality limit (AQL) for lot-by-lot by attributes. inspection. ISO 9001:2000 Quality management systems. System requirements. Page 25

26 Annex 9. History Technical Requirements for Dansk Rude Verifikation (DRV) - Danish Window Pane Verification in accordance with EN 1279, 1st edition, June 2012 Page 26