Solar Thermal Product Guide

Solar Thermal Product Guide

Contents Company Introduction 03 04-05 06-07 08-09 10-17 Company Introduction Next Generation Energy Solar Thermal Technology Example Applications Planning Design & Support Case Studies For nearly a decade energy efficiency Installers have trusted SOLFEX energy systems to deliver there renewable energy products, solar thermal components and systems are no exception to this. As part of the Travis Perkins PLC group of company s we offer our customers a solid reliable distribution platform and solar thermal expertise from a dedicated sales division. The company origins are founded on supplying the solar thermal sector with its own exclusively designed & European manufactured own branded solar thermal equipment. SOLFEX energy systems can supply a vast range of solar thermal products and services for various applications from domestic residential housing utilising our renowned Prestige Solar Thermal Packages, or we can offer a bespoke system for commercial applications such as hotels, sports & leisure facilities or manufacturing. 20-21 Prestige Solar Thermal Packaged Solutions 22-25 Only Prestige Solar Thermal Components... 26-27 Unvented Cylinders 28-29 Combined Systems domestic hot water & backup space heating 30-31 Commercial Solar Thermal Components 32-33 FK 250 Frame Collector 34-35 FK 500 Frame Collector 36-37 Crane Mounted GK Series 38-43 CPC INOX & OEM Vacuum Tube Collectors 44-45 OEM 21 Vacuum Tube Collectors 46-47 Solar Thermal Collector Certifications

Next Generation Energy Solar thermal energy is a cost effective, everlasting, and unlimited free energy resource that does not produce any harmful emissions or wastage, with global warming temperatures continuing to rise and traditional energy sources such as Gas and Oil increasing in cost year on year, solar thermal energy systems are becoming one of Europe s fastest growing renewable technologies. The concept is very simple, thermal energy produced from the solar thermal collectors is gathered and stored in a well-insulated tank; this thermal energy can be used for bathing, or in larger combined systems can also assist space heating requirements. Environmentally Friendly & Financially Rewarding As well as reducing your carbon foot-print and adding value to your property, using solar thermal energy has outstanding financial rewards, Hot water heating generation costs are cut considerably, by up to 70% annually & in the sumer months as much as 100% of your total requirement. Backup space heating support in well insulated homes can also be partially covered, SOLFEX Energy Systems will be happy to provide information and calculations about the economic efficiency of your Solar Thermal System, including the UK government supported Renewable Heat Incentive (RHI) which will guarantee index linked payments for every Kwh (th) of renewable energy generated. The Technology All our Solar Thermal Collectors do not rely on direct sunlight or high ambient temperatures; they are designed to absorb diffuse light and will even produce useful amounts of heat energy on cloudy days, thus reducing the operating time of your conventional boiler and further use of expensive fossil fuels, using Solar Thermal Energy will also reduce expensive maintenance of your current boiler because its operational usage will be lower. Solar Panel Mounting Orientation For optimum performance solar panels should be positioned due South at 35, however, it is impossible that all roof orientations will allow this, in general any position between South East & South West is suitable and will only reduce optimum by up to 5%. Solar Panels can also be mounted on the East & West elevation; this type of system will absorb energy both in the morning and in the afternoon as the axis of the sun or diffuse light moves from East to West. Using high performance CPC vacuum tube collectors it is also possible to install this type of collector on the West facing orientation only, the CPC collector has highly reflective, weather proof CPC ( Compound Parabolic Concentrator) reflector behind each vacuum tube, the special improved geometry of the reflector ensures that direct and diffuse light falls on to the absorber even when the angle of incidence is not ideal. Graph showing typical hot water contribution from solar heating in the UK 100 90 80 70 60 50 40 30 20 10 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 04

Solar Thermal Technology Example Applications New Build Sector Multiple Occupancy Buildings Houses Apartments Homes & Small Businesses Domestic Hot Water Space Heating Washing & Laundry Leisure Hotels Camping Facilities Health Clubs & Spas Sports Facilities Swimming Pools Manufacturing & Industry Agriculture & Milk Processing Cleaning Facilities Educational Institutions Schools Universities and Colleges Campus Residency Accommodation 06

Planning Design & Support At SOLFEX energy systems we can also plan, correctly dimension, design & indemnify your proposed solar thermal installation, from a standard small domestic installation to a commercial solar thermal system we offer a one stop solution to your requirements. When specifying a solar thermal system for any building, key bespoke requirements of the building need to be taken into account such as: Solar Objective i.e. domestic hot water / space heating / swimming pool or combination Location & irradiance levels Occupancy & type of building ( i.e. school / hotel ) Solar Thermal Engineering Pre-installation & on-site installer support / consultancy by our trained professionals Project specific & bespoke Auto CAD hydraulic layouts of the proposed solar thermal system Dimensioning & sizing of each component Pipe sizing and transfer fluid volume Electrical wiring diagrams of the proposed solar thermal system Indemnity of the system design and specification Commissioning & on-site installer support throughout installation Daily domestic hot water usage and if there are any periods of building closure Space Heating requirement in Kwh / M² of property Orientation of collector field & if there are any shading issues Angle of inclination of roof, roof covering material & roof area size The above are just some of the details we will require to correctly specify and dimension a solar thermal system, SOLFEX energy systems will require you to complete an on-site planning document, and our professional team will then be able to offer you a bespoke specification & TSOL yield projection according to your requirements with a list price quotation subject to discount. Customer Service & Aftersales Support At SOLFEX energy systems customer support & service does not end when you have purchased & installed your system. Our dedicated internal and external technical support team will ensure your enquiry will be dealt with professionally and within a timely manner. Dedicated On-Site Support Our internal team are available to assist in providing system specifications, TSOL yield forecast projection & quotations, and our external sales team can also provide on-site technical support to MCS accredited installers and consultants. 08

Case Studies Case Studies Beechcroft Farm Campsite Domestic Family Home Property Type: Farm/Campsite Location: Peak District Collector: SOLFEX energy systems In-Roof Gross Collector Area: 28 m² Solar Storage Tank: Multi Energy Solar Buffer 1500L Solar objective: Installer Peak Eco and there client Beechcroft Farm Campsite needed a renewables solution to cover their substantial hot water requirement & lower their energy costs for the shower blocks and washing facilities, a bespoke solution was designed working alongside Lee Robinson at Peak Eco and roof integrated collectors were chosen due to ascetics purposes. The harvested solar thermal energy is loaded through a stratified loading module into a 2000 litre buffer tank, fresh hygienic legionella free hot water is delivered at up to 225 litres per minute to all buildings outlets providing enough solar thermal generated hot water to cover the entire Summer Months when the camp site is in operation. Property Type: Detached Family Bungalow Location: Lincoln Collector: CPC INOX Vacuum Tube Gross Collector Area: 16 m² Solar Storage Tank: Multi Energy Solar Buffer 1000L Solar objective: Domestic hot water with underfloor space heating with surplus energy heating a swimming pool. A home owner in Lincoln chose SOLFEX energy systems to design a bespoke solution which would maximize the real potential of solar thermal power, CPC INOX vacuum tube collectors were chosen due to the small roof area available and the client wanting to maximize harvesting of solar thermal energy. The collector field delivers energy to a 1000 litre stratified buffer tank and domestic hot water is supplied using two fresh water stations which will deliver fresh hygienic legionella free hot water at a rate of 60 litres per minute & the heating circuits are fed through two heating circuit groups ( HKG ) which is weather compensated. Surplus energy is diverted to a plate heat exchanger fitted on the swimming pool circuit and the system is controlled and monitored by a Primos 600 solar thermal controller. 10

Case Studies Case Studies 1 & 2 Bedroom Apartments Luxury High Rise Apartments Property Type: 58 x 1 & 2 bedroom apartments Location: Shirley, Southampton Collector: SOLFEX energy systems In-Roof Gross Collector Area: 118.9 m² Solar Storage Tank: 210 unvented solar twin coil Solar objective: Domestic Hot Water to supply multiple apartment units to achieve Code Level 3. Orchid Homes needed a solution to provide solar thermal hot water in each apartment to achieve code level 3 building regulation, multiple manufactures were sought to provide the scheme but SOLFEX energy systems were selected due to the technical ability of large collector arrays to be seamlessly integrated into the roof fabric. Detailed planning with the client and installer partner was overcome and the development was a major success with up to 60% annually of domestic hot water being provided purely by the solar thermal energy. Property Type: Luxury high rise apartments Location: Imperial wharf/chelsea Harbour Collector: CPC OEM Vacuum Tube Collector Gross Collector Area: 9.2 m² Solar Storage Tank: 300litre with secondary circulation Solar objective: Located in one of the most sought after locations on the north bank of the River Thames, adjacent to Chelsea Harbour, Imperial Wharf is London s premier riverside address. The solar thermal installation was installed in the new office complex for the main developer, St George, and supplies their hot water for showering/washing facilities; the developer is committed to the creation of sustainable energy efficient communities & building practices. The installation itself was a challenge due to an 85 meter pipe run in between the collector field and storage vessel so an increased collector area was added to overcome the heat loss within the pipe work and the correct high efficiency pump was selected within the pump group to overcome increased pressure loss across the pipe work system. Due to the height of the building increased ballast was also used to prevent against wind loads. The installation was completed within two days by the Professional Evo-Energy Team who are part of the SOLFEX energy systems Installer Partner Program. 12

Case Studies Case Studies Ryedale Public Swimming Pool Luxury High Rise Apartments Property Type: Public Swimming Pool Location: Pickering, North Yorkshire Collector: SOLFEX energy systems On-Roof Gross Collector Area: 90 m² Solar Storage Tank: Plate Heat Exchanger Solar objective: Rising energy costs and the newly introduced, government backed Renewable Heat Incentive (RHI) payments were the key drivers for Ryedale District Council when they recently undertook a planned boiler replacement and decided to utilise the power of solar energy to heat Ryedale Pool in Pickering as part of the package of measures. SOLFEX energy systems was contacted by Ecoliving with a brief and in conjunction with Preston Lee Chambers building services consultancy plans were put in place to design and cost the large scale solar thermal system. Property Type: Luxury high rise apartments Location: London, Financial District Collector: CPC INOX & OEM 21 Vacuum Tube Gross Collector Area: 90 m² Solar Storage Tank: Multi Energy Solar Buffer 5000L Solar objective: District Heating Communal System with Heat Interface Units. Mala Engineering needed a solar thermal solution with important planning & design considerations to be achieved so approached SOLFEX energy systems for expertise, firstly due to important planning restrictions some of the collector field needed a horizontal vacuum collector which would restrict the appearance of the solar panel field behind a parapet wall, the OEM 21 was chosen for exactly this reason along with the CPC INOX on another area of the roof which was concealed. Flat plate collectors were chosen due to the collector field orientation being due South with no shading and the excellent price performance ratio. The installation consists of 2 rows of 21 flat plate solar thermal panels, connected in series seven at a time on the facility s flat roof. It is integrated with 2 gas boilers and a CHP (combined heat & power) unit controlled by a BMS system. Engineering design by SOLFEX energy systems delivered a solution utilising a stratified layering module ( SLM 120 ) to load a purpose designed and manufactured 5000 litre stratified buffer tank which fed each apartments heat interface unit. The solar thermal system is connected to the internal building management system and is currently delivering more energy than anticipated by the initial solar thermal design software. 14

Case Studies Case Studies Housing Association Sheltered Accommodation Grange Gorman Hospital Property Type: 2 x 20 bedroom Sheltered Blocks Location: Colwyn Bay Collector: SOLFEX energy systems On-Roof Gross Collector Area: 32 m² Solar Storage Tank: Bespoke Stratified 2000 litre Buffer storage in each block Solar objective: Domestic Hot Water and Back-Up Space Heating Support When Cartefi Conway, the registered social landlord decided to renovate two sheltered accommodation blocks in North Wales, through there contractors PH Jones they contacted SOLFEX energy systems about the possibility of installing a solar thermal system in order to meet the residents hot water demand and lower their overall energy costs. SOLFEX energy systems presented a unique design comprising of 32M² of on roof flat plate collectors for each of the two properties. The harvested solar thermal energy is loaded into a bespoke stratified 2000 litre buffer tank through stratified loading module ( SLM ). A commercial fresh water station ( FWM 225 ) delivers fresh hygienic legionella free hot water to all the outlets within the sheltered accommodation block and the thermal energy can also be used within the space heating circuit. Property Type: Hospital Location: Dublin, Republic of Ireland Collector: CPC OEM Vacuum Tube Collector Gross Collector Area: 54 m² Solar Storage Tank: Multi Energy Solar Buffer 4000L Solar objective: Potable Hot Water. This impressive installation was carried out by Euro-fluids of Ireland on behalf of their clients the Grange Gorman Hospital. Over 50M² of CPC OEM vacuum tube collectors were installed on the hospital roof and piped according to the Tichelmann principle. The harvested solar thermal energy was loaded to a 4000 litre buffer tank through a SOLFEX energy systems loading module, fresh hygienic legionella free hot water is supplied through a SOLFEX energy systems commercial fresh water station ( FWM 225 ) and will deliver up to 225 litres per minute. 16

Product Range { Prestige Solar Thermal Packs Unvented Cylinders Commercial Solar Thermal Components FK 250 Frame Collector FK 500 Frame Collector Crane Mounted GK Series CPC INOX Vacuum Tube Collectors CPC OEM Vacuum Tube Collectors OEM 21 Vacuum Tube Collectors 18

Prestige Solar Thermal Packaged Solutions Vacuum Tube Collector Packs All our solar thermal packs are designed for maximum system efficiency and are sized to meet current building codes of practice and the property needs; only market leading components are used giving unparalleled system performance and warranties. All solar thermal packs are delivered with all the necessary components including 1st & 2nd fix pipe work & connection fittings pack to make the installation smooth & trouble free. Collectors & flashing kits / mounting rails along with the first fix pipe work pack can be requested first to enable all roof work to be carried out; all the other components can be delivered to site at a later date when requested to enable system completion. Flat Plate Collector Packs Market Leading Unrivalled Warranty on Solar Thermal Collectors Quite simply SOLFEX energy systems supply the highest quality engineered & performing Solar Thermal Products on the market, no exception to this are our warranty conditions. We were the first company in the UK to offer a 20 year warranty on our vacuum tubes back in 2007; other competitors with inferior single wall vacuum tubes with glass to metal sealings have tried to follow our example. German Engineered & Manufactured Vacuum Tube Collectors Unlike our competitors who only offer 5 year warranty, our CPC INOX manifolds, frames and mounting equipment are guaranteed for a full 10 years, our twin wall glass vacuum tubes are guaranteed for a full 20 years and are free of charge to all SOLFEX energy systems / MCS accredited installers. We can offer this market leading warranty because of the high build quality and raw materials used within our vacuum collectors which have no moving parts or rubber O rings which are prone to failure within vacuum collectors, our stainless steel pipe registers with CPC INOX models are not susceptible to corrosion by faulty transfer mediums or leaks because they are welded instead of using O ring seal. Austrian Engineered & Manufactured Flat Plate Collectors SOLFEX energy systems offer the State of the Art FK series flat plate collector, this next generation collector is available in two sizes and in landscape and portrait versions, it can be mounted on-roof or in-roof and is available with RapFit push fit hydraulic connections saving valuable installation time. With efficiency ( η0) at 81.2%, a 10 year warranty, and black anthracite finish this collector stands out amongst it competitors. 20

Only Prestige Solar Thermal Components... Pump Groups Transfer Medium Discharge Containers Expansion Vessel Only the highest quality German manufactured pump groups are used within our Prestige Solar Thermal packs and will aide swift installation, the unit comes with a pre mounting wall bracket and all components including pump, air separator, safety valve, flow meter, isolation, check & filling valves, flow & return temperatures gauge and monometer are all inbuilt, the unit is supplied with an insulated stylish case. All SOLFEX energy systems Prestige Solar Thermal Packs will include Tyfocor LS pre mixed transfer medium which has a continuous operating temperature of up to 170 c, no other transfer medium is recommended within our systems. A Discharge Container will also be supplied with every Prestige Solar Thermal pack, complete with wall mounting screws and valve for emptying provides a safe and convenient method for dealing with any potential discharge from the safety valve. Only the best will suffice for our Prestige Solar Thermal pack, that is why your solar thermal pack will include a market leading Zilmet expansion vessel & an intermediate vessel with all vacuum tube collector packs, on vessels up to 25 litre you will also be provided with a convenient wall mounting bracket. Next Generation Solar Thermal Controllers German manufactured state of the art Primos solar thermal controller within every Prestige Solar Thermal pack with inbuilt SD card slot and data logging, optional web-module available via Conexio 600 for remote solar thermal controller access & viewing of system data & yield online, additional switching relay outputs for back up heating & also pump speed control. The controller is supplied with an LCD backlit screen and easy to read pictorial diagrams with simple operation using the four pressure keys. Pipework Kits 1st & 2nd Fix Solar Pipework Kits include all brass fittings and are supplied with all our Prestige Solar Thermal Packs and will ensure rapid installation, the first fix pipe work includes 2 x 1 mtr preinsulated lengths & fittings to connect to the solar collector through the roof & the second fix pack contains 2 x 10 mtr lengths and all the fittings to connect to the pump group and cylinder, the insulation on our DN12 complies with building regulation Part L and has a tough copolymer foil finish which is UV resistant and protects the insulation from mechanical damage. Detailed Planning, Installation and Maintenance & Operating Guides All Prestige Solar Thermal Packaged Solutions are supplied with a detailed planning, installation, maintenance & operating guide to aide a swift installation on site. The manuals have been written by qualified solar thermal engineers and list everything from pre-installation requirements, solar system dimensioning, hydraulic circuit layouts and any valve positions, mounting systems and collector fixing requirements, commissioning & maintenance requirements are just a few of the details covered. Unvented Cylinders Overvoltage Protection Kits An overvoltage protection kit will be supplied with every solar thermal pack to avoid overvoltage damage at the collector PT 1000 sensors. Our cylinders are specifically designed for solar applications in mind, therefore providing an efficient way of providing domestic hot water. Each model features a dedicated high performance solar coil, transferring the maximum amount of heat from the solar circuit to the stored water. For further info please refer to page 26. 22

Property size / household occupants Prestige Solar Thermal Pack Sizing Guide Domestic hot water Solar Collector orientation Vacuum Tube Collector CPC ( INOX or OEM ) Flat Plate Collector FK series Solar Cylinder Size Manufactured with care for long lasting system performance 1 Bedroom apartment, 1-2 occupants with 1 bathroom SE to SW 1 x CPC 12 or 2 x CPC 6 (2m² aperture area) 1 x FK 250 (1.88m² aperture area) 180 litre 1-2 Bedroom apartment, 1-3 occupants with 1 bathroom SE to SW 1 x CPC 12 or 2 x CPC 6 (2m² aperture area) 1 x FK 500 (2.35m² aperture area) 210 litre 2-3 Bedroom House, 3-4 occupants with 1 bathroom & 1 en-suite SE to SW 1 x CPC 18 or 3 x CPC 6 (3m² aperture area) 2 x FK 250 (3.76m² aperture area) 250 litre 2-3 Bedroom House, 3-4 occupants with 1 bathroom & 2 en-suite SE to SW 1 x CPC 18 or 3 x CPC 6 (3m² aperture area) 2 x FK 250 (3.76m² aperture area) 250 litre 4-5 Bedroom House, 4-5 occupants with 1 bathroom & 2 en-suite SE to SW 2 x CPC 12 or 4 x CPC 6 (4m² aperture area) 2 x FK 500 (4.70m² aperture area) 300-400 litre 4-5 Bedroom House, 4-6 occupants with 2 bathroom & up to 2 en-suite SE to SW 2 x CPC 12 or 4 x CPC 6 (4m² aperture area) 3 x FK 250 (5.64m² aperture area) 400 litre Basic hydraulic schematic for solar thermal domestic hot water only. Property size / household occupants Solar Collector orientation Vacuum Tube Collector CPC (INOX or OEM) Flat Plate Collector FK series Solar Cylinder Size 1 Bedroom apartment, 1-2 occupants with 1 bathroom East / West System 2 x CPC 6 (2m² aperture area) 1 x collector on each elevation 1 x FK 500 (2.35m² aperture area) 1 x collector on west elevation 180 litre Hot Water Out 1-2 Bedroom apartment, 1-3 occupants with 1 bathroom East / West System 2 x CPC 6 (2m² aperture area) 1 x collector on each elevation 1 x FK 500 (2.35m² aperture area) 1 x collector on west elevation 210 litre Pump Group Auxillary Heating 3-4 Bedroom House, 3-4 occupants with 1 bathroom & up to 2 en-suite East / West System 2 x CPC 12 or 4 x CPC 6 (4m² aperture area) 1 x CPC 12 or 2 CPC 6 on each elevation 2 x FK 500 (4.70m² aperture area)1 x collector on each elevation 300-400 litre Hot Water Cylinder The above examples are only a guideline and further solar thermal pack / sizing combinations can be requested, please consult your sales representative. Domestic heating compliance guide states the solar cylinder dedicated solar volume should be no less than 25 litres per net metre square of solar collector absorber area. Cold Water In TSOL solar thermal simulation software should always be used to correctly dimension each individual system, SOLFEX energy systems dedicated solar thermal sales team will carry this out for all clients free of charge. 24

Unvented Cylinders Our cylinders are specifically designed for solar applications in mind, therefore providing an efficient way of providing domestic hot water. Each model features a dedicated high performance solar coil, transferring the maximum amount of heat from the solar circuit to the stored water. Our cylinders are compatible with all our Prestige Solar Thermal packs and have been designed to maximise the dedicated solar volume. The direct models are electrically heated cylinders, using the 3kW immersion heater supplied with the unit, with a high performance solar coil. They are capable of meeting the requirements of Building regulations, provided that it is matched to the panels and the hot water requirement correctly. The indirect cylinders are heated by a conventional boiler (either gas or oil) through a second high performance coil. Duplex Stainless Steel Using the latest high specification Duplex stainless steel to resist all forms of corrosion including crevice and stress whilst its high mechanical strength gives it durability. The very latest automated welding procedures along with full post weld treatments guarantee welds that are as strong as the metal. All cylinders are factory pressure tested to a full 12 bar which is four times the normal working pressure. Corrugated Stainless Steel Coil We use a high heat transfer corrugated tube heat exchanger to give a 20% faster recovery than plain tube heat exchangers, it is also lighter & stronger than plain tube making the storage cylinder the lightest and easiest to handle on site. Maximum Capacity An inbuilt diffuser reduces turbulence when cold water enters the storage by baffling the flow, the end result is that the hot water output is equal to the capacity, a 180 litre cylinder will produce 180 litres of hot water! Heat Loss All our cylinders are manufactured using the latest HCFC free Enviro-foam insulation, tests show that 50mm of Enviro-foam injected into the case and covering both domes achieves astonishingly low levels of heat loss which ensures it fully complies with the 2010 Part L requirements for both new build and replacement cylinders. Quality Standard All our unvented stainless cylinders are manufactured in accordance with BS EN 12897 the specification for unvented water storage vessels. The cylinders have been tested by Kiwa which is a member of the European Organisation for Technical Approvals and comply with current UK Building Regulations G3 and Water Regulations, in performance it complies with the requirements of BS 6700 and meets the NHBC criteria for domestic properties. All cylinders are supplied with: Immersion heater (s) Wiring centre (indirect) Inlet control set Expansion vessel kit Temperature and pressure relief valve Control thermostat and drain valve 2 port zone valve (indirect) Dual thermostat (indirect) Tundish Installation manual & benchmark log book. Direct Solar Technical Specification Description SOL180d SOL210d SOL250d SOL300d SOL400d Height mm 1295 1483 1733 2020 2040 Diameter mm 550 550 550 550 630 Weight (empty) kg 26 30 34 39 49 Weight (full) kg 206 240 284 339 449 Capacity litres 180 210 250 300 400 Pressure regulator bar 3 3 3 3 3 Expansion vessel size litres 18 24 24 35 2 x 24 kw rating of primary coil kw n/a n/a n/a n/a n/a Recovery time after 70% draw off min 90 115 139 187 260 Standing losses kwhr/24hr 1.40 1.60 1.75 1.93 3.33 Surface area of solar coil m 2 0.680 0.680 0.970 0.970 1.270 Dedicated solar volume litres 60 70 84 100 150 Model Selection Guide Maximum hot water demand Maximum solar panel area (m2) Bedrooms Model 1 shower room 2.4 Bedsit SOL180d 1 bathroom 2.8 1-3 SOL210d 1 bathroom & separate shower room 3.36 1-3 SOL250d 1 bathroom & 2 separate shower rooms 4.0 2-4 SOL300d 2 bathrooms & separate shower room 6.0 4-5 SOL400d Notes 1 Recovery time is based on primary coil/immersion heater duty (ie. assumes the boiler output is adequate). 2 All connections are supplied with compression fittings for direct connection to copper pipework. 3 The model sizes shown are based on a typical days hot water use assuming an Economy 7 tariff is provided. A reduction of one model size can normally be made with an Economy 10 tariff. Direct Solar Technical Specification Description SOL180i SOL210i SOL250i SOL300i SOL400i Height mm 1295 1483 1733 2020 2040 Diameter mm 550 550 550 550 630 Weight (empty) kg 30 30 40 46 59 Weight (full) kg 210 245 290 346 459 Capacity litres 180 210 250 300 400 Pressure regulator bar 3 3 3 3 3 Expansion vessel size litres 18 24 24 35 2 x 24 kw rating of primary coil kw 18.0 18.5 19.0 20.5 22.0 Recovery time after 70% draw off min 16 16 19 20 24 Standing losses kwhr/24hr 1.40 1.60 1.75 1.93 3.33 Surface area of solar coil m 2 0.680 0.680 0.970 0.970 1.270 Dedicated solar volume litres 96 101 107 125 165 Model Selection Guide Maximum hot water demand Maximum solar panel area (m2) Bedrooms Model 1 bathroom 2.8 1-3 SOL180i 1 bathroom & separate shower room 3.6 1-3 SOL210i 1 bathroom & 2 separate shower rooms 4.8 2-4 SOL250i 2 bathrooms & separate shower room 5.0 3-4 SOL300i 2 bathrooms & 2 separate shower rooms 6.6 4-5 SOL400i Notes 1 Recovery time is based on primary coil/immersion heater duty (i.e.. assumes the boiler output is adequate). 2 All connections are supplied with compression fittings for direct connection to copper pipework. 4 When using the Direct model for high specification developments, an increase of one model size should be considered. 5 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the solar panel to ensure compliance with Building Regulations. 6 Maximum solar panel area is calculated based on 25l/m2 of net solar panel area. 3 When selecting a solar model, it is important to check the dedicated solar volume is suitable for either the total floor area of the dwelling or the total net area of the solar panel to ensure compliance with Building Regulations. 4 Maximum solar panel area is calculated based on 25l/m2 of net solar panel area. 26

Combined Systems domestic hot water & backup space heating Combined systems unique features & benefits Unique plug & play system for ease of installation. Hygienic & legionella free domestic hot water due to no storage of potable water. Completely expandable system, freshwater station flow rates of 30 litres / min and additional units can be linked to deliver higher flow rates, multiple tanks can also be connected in series for greater hot water and space heating requirements. Multiple buffer storage connections for other alternative energy sources. Optional secondary hot water circulation pump with in-built timer for fresh water station Sizing Guide Domestic Hot Water & Space Heating Property size / household occupants Solar Collector orientation Vacuum Tube Collector CPC ( INOX or OEM ) Flat Plate Collector FK series Buffer Tank Size 2-3 Bedroom House, 3-4 occupants with 1 bathroom & 2 en-suite SE to SW 4 x CPC 12 (8m² aperture area) 5 x FK 500 (11.75 m² aperture area) 800 litre 4-5 Bedroom House, 4-5 occupants with 1 bathroom & up to 3 en-suite SE to SW 5 x CPC 12 (10m² aperture area) 6 x FK 500 (14.1 m² aperture area) 800 litre 4-6 Bedroom House, 5-7 occupants with 2 bathroom & up to 3 en-suite SE to SW 4 x CPC 18 (12m² aperture area) 6 x FK 500 (14.1 m² aperture area) 1000 litre The above examples are only a guideline and further solar thermal pack / sizing combinations can be requested, please consult your sales representative. TSOL solar thermal simulation software should always be used to correctly dimension each individual system, SOLFEX energy systems dedicated solar thermal sales team will carry this out for all clients free of charge. Basic hydraulic schematic for solar thermal domestic hot water with backup space heating support. Utilising the state of the art Multi Energy Solar Buffer Tank, solar thermal energy is collected through the chosen collector array and is layered and stored in three large stratified zones through the large surface area coil within the tank, the primary energy within the upper zone is then transferred by the charge pump to the plate heat exchanger within the fresh water station, this will provide a continuous supply of solar heated domestic hot water. Pump Group MESB Tank Fresh Water Station Hot Water Out Cold Water In High Temperature Heating Circuit The middle heating zone within the stratified tank is for the connection of the high temperature heating circuit and the lower heating zone connections are for the under floor heating circuit. Low Temperature Heating Circuit 28

Commercial Solar Thermal Components SOLFEX energy systems stratified loading modules and fresh water stations for large scale solar thermal applications are a pre-plumbed, electrically wired solution with all the necessary components such the solar circuit & charging pump, plate heat exchanger, balancing valves, expansion vessel connection point, filling and flushing points & electronic controller are all contained within an insulated prefabricated unit to aid swift installation. The unit is simply positioned within the plant room and piped accordingly. Stratified Layering Module SLM 120/200 Solar Thermal Energy from large scale collector fields of up to 200M² is transferred through highly efficient plate heat exchangers to the primary water within the buffer storage tank. Depending on the temperature of the water an intelligent control system will deliver this energy into the relevant zone within the buffer storage tank automatically to ensure fast heat up times and maximum efficiency. Fresh Water Station FWM 150/225 SOLFEX energy systems large scale fresh water stations guarantees fresh & hygienic legionella free domestic hot water on demand, primary energy from the buffer storage tank is automatically transferred to the highly efficient plate heat exchangers when there is a demand for domestic hot water or when the secondary circulation is in operation, this results in instant & fresh legionella free domestic hot water flow rates of up to 225 litres per minute. The primary return water is then layered to the relevant zone within the buffer storage tank dependent upon the temperature to maximise efficiency of the system. 30

FK 250 Frame Collector SOLFEX energy systems new and exclusive FK 250 flat plate collector series encompasses the latest patented technologies along with industry know how. The FK 250 black anodised frame collector is available in portrait or landscape versions and is modular in design and can be mounted in many variants including on roof parallel or raised and can also be roof integrated with an attractive anthracite flashing kit which fits any roof fabric profile. The FK 250 also incorporates the new and exclusive Rapid Fit hydraulic connection system; this new patented design enables installer s rapid installation once the support frame is mounted because no tools are required on the roof when mounting collectors in series or connecting flow or return pipe work. FK 250 Series Technical Data FK 250 P FK 250 L Collector type Frame collector Overall area m² 2.02 Absorber area m² 1.86 Aperture area m² 1.88 H x W x D mm 1728 x 1168 x 83 1168 x 1728 x 83 Weight kg 29 Absorber capacity l 1.2 Conversion factor η0 0.802 η: 80% a¹ 3.806 a² 0.012 Collector Field Piping / Max single row 10pcs 8pcs Housing Black Anodised Aluminium Frame Back plate AI-sheet Absorber sheet Meander, AI, highly selectively coated Absorption % 0.95 Emission % 0.05 Ø manifold mm 18 Ø risers mm 8 Connections 4 x push fit connector Glass 3.2 mm tempered solar safety float glass Transmittance of glass % 91 Insulation 50 mm mineral wool plate Max. stagnation temperature 203ºC under test conditions Max operating pressure 10 bar Heat transfer medium Tyfocor LS Approved installation angle Min. 15, º max.75º / Façade 90º Recommended Flow Rate 30 l/m2h - up to max collector area 25m² Solar Keymark No. 011-752014F 1728mm 83mm FK 250 product benefits Collector installation options 1168mm Premium Black Anodised AI frame collector with unique design, available in portrait and landscape. 4 Rapid Fit push fit connectors integrated into the frame and protected for transport. Landscape Version FK 250 L 1168mm 83mm Self-emptying meander absorber with excellent stagnation performance. Installation from 15 to 75 possible as well as 90 for facade installations. Flat roof 20-55 On roof Parallel In-roof Facade Reduced installation time thanks to Rapid Fit hydraulic push fit connectors, no tools necessary. 1728mm Versatile collector with many variable mounting possibilities, on-roof parallel, raised, façade & roof integration using an anthracite flashing kit which fits any roofing profile. Product exclusive to SOLFEX energy systems customers. Collector and mountings statically calculated in accordance with applicable standard EN 1991. Solar Keymark certificate and 10 years warranty. Portrait Version FK 250 P 32

1168mm FK 500 Frame Collector SOLFEX energy systems new and exclusive FK 500 flat plate collector series encompasses the latest patented technologies along with industry know how. The FK 500 black anodised frame collector is available in portrait or landscape versions and is modular in design and can be mounted in many variants including on roof parallel or raised and can also be roof integrated with an attractive anthracite flashing kit which fits any roof fabric profile. The FK 500 also incorporates the new and exclusive Rapid Fit hydraulic connection system; this new patented design enables installer s rapid installation once the support frame is mounted because no tools are required on the roof when mounting collectors in series or connecting flow or return pipe work. FK 500 Series Technical Data FK 500 P FK 500 L Collector type Frame collector Overall area m² 2.51 Absorber area m² 2.34 Aperture area m² 2.35 H x W x D mm 2148 x 1175 x 83 1168 x 2148 x 83 Weight kg 36 Absorber capacity l 1.4 Conversion factor η0 0.812 η: 81.2% 0.811 η: 81.1% a¹ 3.762 3.295 a² 0.010 0.017 Collector Field Piping / Max single row 10pcs 8pcs Housing Black Anodised Aluminium Frame Back plate AI-sheet Absorber sheet Meander, AI, highly selectively coated Absorption % 0.95 Emission % 0.05 Ø manifold mm 18 Ø risers mm 8 Connections 4 x push fit connector Glass 3.2 mm tempered solar safety float glass Transmittance of glass % 91 Insulation 50 mm mineral wool plate Max. stagnation temperature 203ºC under test conditions Max operating pressure 10 bar Heat transfer medium Tyfocor LS Approved installation angle Min. 15, º max.75º / Façade 90º Recommended Flow Rate 30 l/m2h - up to max collector area 25m² Solar Keymark No. 011-7S2014 F 2148mm 83mm FK 500 product benefits Collector installation options Premium Black Anodised AI frame collector with unique design, available in portrait and landscape. Landscape Version FK 500 L 1175mm 83mm 4 Rapid Fit push fit connectors integrated into the frame and protected for transport. Self-emptying meander absorber with excellent stagnation performance. Installation from 15 to 75 possible as well as 90 for facade installations. Flat roof 20-55 On roof Parallel In-roof Facade Reduced installation time thanks to Rapid Fit hydraulic push fit connectors, no tools necessary. 2148mm Versatile collector with many variable mounting possibilities, on-roof parallel, raised, façade & roof integration using an anthracite flashing kit which fits any roofing profile. Product exclusive to SOLFEX energy systems customers. Collector and mountings statically calculated in accordance with applicable standard EN 1991. Solar Keymark certificate and 10 years warranty. Portrait Version FK 500 P 34

Crane Mounted GK Series The GK 3000 large scale collectors are manufactured in standard sizes of 5M² & 10M² and are available for installation schemes with a surface area above 80M². The special design of the absorber and the attractive performance data make these collectors ideal for large solar thermal systems. The optimized mounting system, which permits time-saving installation by crane, and simple connection considerably reduce the overall time and effort required. GK 3000 Series Technical Data GK3100 GK3500 Collector type Large-size collector Overall area m² 10.05 5.03 Absorber area m² 9.17 4.59 Aperture area m² 9.43 4.69 H x W x D mm 2064 x 4896 x 114 2064 x 2441 x 114 Weight kg 170 90 Absorber capacity l 9 4.5 Housing Al-frame Surface Al, natural Back plate Al-sheet Absorber Al, highly selective vacuum coating Absorption 95 Emission 5 Ø manifold 28 Ø risers 8 Connections 1 ¼ external thread (including anti-rotation element) Glass 3.2 mm tempered solar safety glass Transmittance of glass 91 Insulation 50 mm mineral wool plate Max. stagnation temperature 234 C under test conditions Max. operating pressure 10 bar Heat transfer medium Polypropylene glycol/water mixture Approved installation angle min. 25, max. 75 Standard packaging 6 collectors, vertical 114 4896 GK 3000 product benefits 4867 2427 83 Up to 10 collectors - can be connected in parallel or in series with each other with minimum pressure loss (Low Flow / Tichelmann) Collector installation options Optimal stagnation and draining behaviour thanks to the serpentine absorber designed for large systems 2468 1892 2064 Aluminium frame collector with a high degree of long-term stability satisfies all static requirements as per DIN 1055 Time-saving collector installation thanks to optimized support triangles with support rails as well as simple collector connections Flat roof 30 Flat roof 45 Flat roof 60 On roof Parallel 114 2441 1994 83 Excellent value for money thanks to aluminium absorber with highly selective coating as well as minimum crane use and installation time to set up the system Easy to service since glass covers and modules can be individually replaced 1892 2064 36

Vacuum Tube Collectors CPC INOX In the development of the collectors, our OEM partner Ritter Solar GmbH used their many years of experience with CPC in combination with the latest findings from production technology. Sharp reflector edges are framed in the aluminium frame profile. The edges of the collector frame are sealed with rubber profiles. Only few screws are used in those places which need to be unfastened for maintenance; rivets are not used. SOLFEX energy systems vacuum tube collectors are mass-produced products manufactured by our OEM partner and European market leader for vacuum tube collectors Ritter Solar GmbH in Baden-Württemberg- Germany. Their outstanding design, professional processing, top quality and high energy yield, as well as their excellent price/performance ratio make them stand out. High-quality, corrosion-resistant and tested materials ensure smooth operation over a long useful life. The well-known indestructibility of the borosilicate glass tubes was confirmed by positive test results in the hailstone test according to DIN EN 12975-2 and the thermal shock test. For CPC INOX, the flow and return pipes may be fitted on the left or the right of the manifold. Depending on the location of the flow pipe, the sensor is placed on the right or the left. The CPC INOX evacuated tube collectors were developed especially for solar water heating and for solar backup heating. The low pressure loss allows several modules to be connected in series. The aperture area measurements of 1.0, 2.0 and 3.0 m2 allow accurate adjustment to water and/or space heating requirements. We also paid careful attention to details which are important for mounting the system: the solar system is delivered with a tentered sun protection sheet to allow commissioning the system even during maximum solar irradiation. Hand straps which can be attached to the collector frame ensure safe and easy transport onto and across the roof and can be used as transport straps for quick mounting. To increase the efficiency of evacuated tube collectors, a highly reflective, weatherproof CPC reflector (Compound Parabolic Concentrator) is fitted behind the evacuated tubes. The special, improved geometry of the reflector ensures that direct and diffuse sunlight falls onto the absorber even when the angle of incidence is not ideal. This considerably improves the energy yield. The evacuated tube is a product with improved geometry and performance. The evacuated tubes consist of two concentric glass tubes which are sealed in a semi-circular shape on one side and are joined to one another on the other side. The space between the tubes is evacuated and then hermetically sealed (evacuated insulation). To use solar energy, the internal glass tube is coated with an environmentally friendly, highly selective layer on the outside, thus turning it into an absorber. The coating is protected in the evacuated space. The aluminium nitrite sputter coating used is characterised by extremely low emissions and excellent absorption. The tube retainer can be mounted and demounted from the foot rail without using tools. All sharp edges are sealed with rubber profiles. The pipes are mass produced with just a minimum number of soldering points. This results in high leakage safety and a reduction of internal scaling. The internal pipe register is also constructed from stainless steel, which prevents any associated corrosion issues from faulty transfer mediums and two dissimilar metals fused together. Solar Keymark No. 011-7S495R The reflector is produced from a weather proof metal sheet with protective coating using accurate roll forming technology. The special fastening technique allows the reflector to be exchanged without using tools. The heat transfer plates are made of aluminium so that even high stagnation temperatures have no effect on the metal s characteristics. The heat transfer plate is folded into both pipes. 38

Vacuum Tube Collectors CPC 6 INOX, CPC 12 INOX, CPC 18 INOX For water heating and backup heating, series connection Power Curve Power output per collector unit [W] 2,500 2,000 1,500 1,000 500 CPC 18 INOX CPC 12 INOX CPC 6 INOX Pipe Material Stainless Steel Installation Types On-roof installation Flat roof / wall installation 0 0 20 40 60 80 100 T= T Collector - T Ambient air [K] Scope of Delivery Fully pre-assembled unit comprising of: evacuated tubes based on the thermos flask principle manifold with direct low heat conduction unit and dry tube connection CPC reflector Collectors are packed in individual boxes. A sun protection sheet over the evacuated tubes. Notes The manifold must always be mounted on top. The minimum angle for on-roof and flat roof installation is 15. Pressure Loss Heat transfer medium: Tyfocor LS, medium temperature 40 C Pressure loss [mbar] 120 100 80 60 40 CPC 18 INOX CPC 12 INOX CPC 6 INOX Series CPC INOX Vacuum Tube Collectors CPC 6 INOX 0.8 kw CPC 12 INOX 1.6 kw CPC 18 INOX 2.4 kw Number of evacuated tubes 6 12 18 η0 in relation to aperture, EN 12975 % 64.2 64.2 64.2 a 1 with wind, in relation to aperture W/(m²k) 0.89 0.89 0.89 a 2 with wind, in relation to aperture W/(m²k²) 0.001 0.001 0.001 Yield forecast (location Würzburg, Germany, reference area 3 m²) kwh/m²a 651 651 651 Yield forecast (location Würzburg, Germany, reference area 5 m²) kwh/m²a 589 589 589 Grid dimensions (length x height x depth) m 0.70 x 1.64 x 0.1 1.39 x 1.64 x 0.1 2.08 x 1.64 x 0.1 Gross surface area m² 1.15 2.28 3.41 Aperture area m² 1.0 2.0 3.0 Collector contents l 0.9 1.8 2.6 Weight kg 19 35 52 Max. working overpressure bar 10 10 10 Max. stagnation temperature C 272 272 272 Connection diameter, compression fitting mm 15 15 15 Sensor sleeve mm 6 6 6 Collector material Al / stainless steel / glass / silicone / PBT / EPDM / TE Glass tube material borosilicate glass 3.3 Selective absorber coating material aluminium nitrite Glass tube (Ø ext./ø int./wall thickn./tube lgth.) mm 47/37/1.6/1500 Colour (aluminium frame proiles, powder-coated) RAL 7015 Colour (plastic parts) black Thermal shock test / ITW test number 06COL513/1OEM08 Hailstone test according to DIN EN 12975-2 / TÜV test number 435/142448 EC type examination Z-IS-DDK-MUC-07-08-100029919-001 20 0 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 Flow rate [I/min] CPC INOX Warranty* Vacuum tubes: 20 years Manifold & mounting materials: 10 years *SOLFEX energy systems terms and conditions apply which are available upon request. Collectors and systems must be installed according to the planning, installation, maintenance and operating guide & registered on the SOLFEX energy systems website within 28 days of such installation being commissioned. 40

Vacuum Tube Collectors CPC 6 OEM, CPC 12 OEM, CPC 18 OEM For water heating and backup heating, series connection Power Curve Power output per collector unit [W] 2,500 2,000 1,500 1,000 500 CPC 18 OEM CPC 12 OEM CPC 6 OEM Pipe Material Copper Installation Types On-roof installation Flat roof / wall installation 0 0 20 40 60 80 100 T= T Collector - T Ambient air [K] Scope of Delivery Fully pre-assembled unit comprising of: evacuated tubes based on the thermos flask principle manifold with direct low heat conduction unit and dry tube connection CPC reflector Collectors are packed in individual boxes. A sun protection sheet over the evacuated tubes. Notes The manifold must always be mounted on top. The minimum angle for on-roof and flat roof installation is 15. Pressure Loss Heat transfer medium: Tyfocor LS, medium temperature 40 C Pressure loss [mbar] 120 100 80 60 40 CPC 18 OEM CPC 12 OEM CPC 6 OEM CPC OEM Vacuum Tube Collectors Series CPC 6 OEM CPC 12 OEM CPC 18 OEM 0.8 kw 1.6 kw 2.39 kw Number of evacuated tubes 6 12 18 η0 in relation to aperture, EN 12975 % 64.2 64.2 64.2 a 1 with wind, in relation to aperture W/(m²k) 0.89 0.89 0.89 a 2 with wind, in relation to aperture W/(m²k²) 0.001 0.001 0.001 Yield forecast (location Würzburg, Germany, reference area 3 m²) kwh/m²a 651 651 651 Yield forecast (location Würzburg, Germany, reference area 5 m²) kwh/m²a 589 589 589 Grid dimensions (length x height x depth) m 0.70 x 1.64 x 0.1 1.39 x 1.64 x 0.1 2.08 x 1.64 x 0.1 Gross surface area m² 1.15 2.28 3.41 Aperture area m² 1.0 2.0 3.0 Collector contents l 0.9 1.8 2.6 Weight kg 19 35 52 Max. working overpressure bar 10 10 10 Max. stagnation temperature C 272 272 272 Connection diameter, compression fitting mm 15 15 15 Sensor sleeve mm 6 6 6 Collector material Al / Copper / glass / silicone / PBT / EPDM / TE Glass tube material borosilicate glass 3.3 Selective absorber coating material aluminium nitrite Glass tube (Ø ext./ø int./wall thickn./tube lgth.) mm 47/37/1.6/1500 Colour (aluminium frame profiles, powder-coated) aluminium grey Colour (plastic parts) black Thermal shock test / ITW test number 06COL513/3OEM08/1 Hailstone test according to DIN EN 12975-2 / TÜV test number 435/142448 EC type examination Z-IS-DDK-MUC-07-08-100029919-001 20 0 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 Flow rate [I/min] CPC OEM Warranty* Vacuum tubes: 20 years Manifold & mounting materials: 5 years *SOLFEX energy systems terms and conditions apply which are available upon request. Collectors and systems must be installed according to the planning, installation, maintenance and operating guide & registered on the SOLFEX energy systems website within 28 days of such installation being commissioned. 42

Vacuum Tube Collectors OEM 21 For water heating and backup heating, series connection Power Curve Power output per collector unit [W] 2,500 2,000 1,500 1,000 500 OEM 21 Pipe Material Copper Installation Types On-roof installation Flat roof / wall installation Horizontal installation 0 0 20 40 60 80 100 T= T Collector - T Ambient air [K] Scope of Delivery Fully pre-assembled unit comprising of: evacuated tubes based on the thermos flask principle manifold with direct low heat conduction unit and dry tube connection CPC reflector Collectors are packed in individual boxes. A sun protection sheet over the evacuated tubes. Notes The manifold must always be mounted on top. The minimum angle for on-roof and flat roof installation is 15. Pressure Loss Heat transfer medium: Tyfocor LS, medium temperature 40 C Pressure loss [mbar] 120 100 80 60 40 20 OEM 21 Series OEM 21 Vacuum Tube Collectors CPC 21 OEM? kw Number of evacuated tubes 21 η0 in relation to aperture, EN 12975 % 74.5 a 1 with wind, in relation to aperture W/(m²k) 2.007 a 2 with wind, in relation to aperture W/(m²k²) 0.005 Yield forecast (location Würzburg, Germany, reference area 3 m²) kwh/m²a 780 Yield forecast (location Würzburg, Germany, reference area 5 m²) kwh/m²a 619 Grid dimensions (length x height x depth) m 1.45 x 1.64 x 0.1 Gross surface area m² 2.32 Aperture area m² 1.33 Collector contents l 2.5 Weight kg 51 Max. working overpressure bar 10 Max. stagnation temperature C 220 Connection diameter, compression fitting mm 15 Sensor sleeve mm 6 Collector material Al / Copper / glass / silicone / PBT / EPDM / TE Glass tube material borosilicate glass 3.3 Selective absorber coating material aluminium nitrite Glass tube (Ø ext./ø int./wall thickn./tube lgth.) mm 47/37/1.6/1500 Colour (aluminium frame profiles, powder-coated) aluminium grey Colour (plastic parts) black Thermal shock test / ITW test number 06COL517 Hailstone test according to DIN EN 12975-2 / TÜV test number 435/142448 EC type examination Z-IS-DDK-MUC-07-08- 100029919-003 0 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 Flow rate [I/min] OEM 21 Warranty* Vacuum tubes: 20 years Manifold & mounting materials: 5 years *SOLFEX energy systems terms and conditions apply which are available upon request. Collectors and systems must be installed according to the planning, installation, maintenance and operating guide & registered on the SOLFEX energy systems website within 28 days of such installation being commissioned. 44

Solar Thermal Collector Certifications All our solar thermal collectors are Solar Keymark Approved and comply for RHI grant funding Based on European norm, in cooperation with the European solar industry union ESTIF (European Solar Thermal Industry), demands on quality were standardised. The European quality mark for solar panels and prefabricated thermic solar facilities, Solar Keymark, is assigned by DIN CERTCO and the certification mark DIN GEPRÜFT. The following quality criteria are involved for example in the panel-check: Thermal Performance Consistency against internal and external shocks Consistency against high temperatures Consistency against frost Consistency of the internal pressure Mechanical conditions (e.g. snow load) Impact-strength Rain impermeability Exposition (Simulation of operating condition / out-door weather) 46

Energy Arena Units 3-5 Charnley Fold Industrial Estate Bamber Bridge Preston Lancashire PR5 6PS Tel: 01772 312 847 Fax: 01772 335 277 Email: solarthermalsales@solfex.co.uk www.solfex.co.uk