Solar heating systems

03 energy efficiency Compact, "ALL-IN-ONE" solar system Solar panel for swimming pools Hydraulic components Drain-Unit: dual hydraulic unit with drain back system Drain-Unit: hydraulic unit with drain-back system Hydraulic units high efficiency Hydraulic pumping units with integrated control Hydraulic pumping units without regulation Hydraulic units for major installations OKFRESH - Fresh water station Indirect heat exchange solar kit Solar dhw kit Zone valves Safety valves Flowmeters Safety groups Compensation valves Drain valves/air separators Mixing valves Controls for solar heating installations Solar expansion vessels Accessories for expansion vessels 03

SOLAR HEATING SYSTEMS COMPACT, "ALL-IN-ONE" SOLAR SYSTEM This is an ALL-IN-ONE solar system that uses solar thermal energy to heat domestic water. It integrates the absorber, the pump-circulated system, and the 150l tank. It uses a PV-driven circulating pump, which means it is a fully autonomous system that does not require any external power source. COMPONENTS All you need in just a single element Inlet. 1 6 Pump. 2 7 PV panel. 3 8 Methacrylate cover. 4 9 Insulator. Valve. Outlet. Exchanger. 3 4 10 5 6 9 7 8 2sqm stainless steel collector featuring a blue selective surface. 5 10 150 litres tank made of corrosion-resistant composite materials. 2 1 HOW DOES IT WORK? From sunrise till water is hot. 85º STAGE 1 Solar radiation reaches the collector, which concentrates the heat that is then transferred to the heat transfer fluid that circulates through the system. The selective treatment and the shape of the surface, it uses a large proportion of incident radiation. As it is filled with the heat transfer fluid, it can use 100% of the surface. STAGE 2 The radiation on the surface is also received on the PV panel, which generates the power that drives the circulating pump. The pump gets the hot fluid into the exchanger. STAGE 3 The heat is transferred to the tank because the hot fluid passes from the pump to the exchanger. The tank will get hot whenever there is sunlight up to the top limit set at 85ºC. 84 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

WHERE IS IT INSTALLED? It can be adapted to meet different installation needs The ALL-IN-ONE solar system can be placed anywhere requiring domestic hot water (homes, campsites, community vegetable gardens, country homes and hotels). The ALL-IN-ONE solar system can be placed in a wide variety of places, from a pitched roof (either built-in or not) to a flat surface, a garden or a wall. 03 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 85

SOLAR HEATING SYSTEMS ADVANTAGES 15% CHEAPER THAN OTHER SYSTEMS OF THE MARKET Less components means less time to install less final price and more m 2 available at home. COMPONENTS TO INSTALL A SOLAR SYSTEM COMPONENTS SYSTEM DRAIN BACK SYSTEM OKSOL SYSTEM ORKLI ALL-IN-ONE MATERIAL Collector Hydraulic group Tank Solar tube Secondary tube ACCESSORIES ELECTRIC INSTALLATION Structure 45º Expansion tank Sanitary solar fluid Drain valves Electrical legalization Material and labor INSTALLATION TIME 25,5 h. 15,5 h. 9,5 h. COMPONENT SYSTEM OKSOL SYSTEM 86 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

Pump powered by photovoltaic cell. Storage capacity: 150 litres. Useful collection surface area: 1,95 m 2. Heat exchanger surface: 0,29 m 2. External dimensions: - Length: 2029 mm. - Width: 1020 mm. - Depth: 250 mm. - Empty weight including tank: 80 kg. Structure on floor or flat terrace, structure, sloping roof top structure and wall structure, under request. 03 Solar collector with integrated tank OKSOL-150 1 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 87

SOLAR HEATING SYSTEMS STRUCTURES Wall structure V-00396 1 Roof-integrated structure V-00397 1 Non-perforating anchor kit V-01036 6 Sloping roof top structure V-00395 1 (Non-perforatin anchor kit not included) Structure on floor or flat terrace (legs) V-01035 1 88 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

ACCESSORIES Protective awning Centrifugal pump Centrifugal pump V-01981 1 Protective awning V-02521 1 Non-return valve 3-bar safety valve 03 Non-return valve V-01982 1 3-bar safety valve V-01983 1 P+5 safety valve Heat-carrying fluid (16 litre tank) P+T safety valve V-01984 1 Heat-carrying fluid V-01985 1 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 89

SOLAR HEATING SYSTEMS SOLAR PANEL FOR SWIMMING POOLS Heated pool water almost all year round. An efficient, affordable alternative. This is one of the most technically efficient, cost-effective applications for swimming pool water heating. Your pool season is extended by 2-3 months with this solar panel system, as the process involves heating large amounts of water to a relatively low temperature. A solution using solar power: a clean, free, inexhaustible power source to keep your pool water at just the right temperature. FEATURES Stainless steel solar collector. Collection surface area 2 m² and weight 15 Kg. 3 hydraulic connections (Ø ¾) for any installation configuration. Dimensions 2000 x 1000 x 18. Sold in batches of 4 units. Panels guaranteed for 5 years. 2000 ISO G 3/4" 1000 90 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

HOW DOES IT WORK? 03 ADVANTAGES It extends the pool season by 2-3 months (at temperatures over 25ºC) The system is compatible with other auxiliary pool heating. Excess heat can be used for domestic hot water production, via a heat exchanger. Adaptable to all kinds of pool. The system is connected to the existing filter circuit using a heat exchanger or directly, depending on the type of filtering. Totally controllable via a central control unit. It enables the pool temperature to be controlled and the solar collector system to be switched off when the water reaches the desired temperature. A smaller heating surface area is required compared to other on the market. Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 91

SOLAR HEATING SYSTEMS SOLAR PANEL FOR SWIMMING POOLS Absorber type: Stainless steel absorber with selective coating. Dimensions: Length 2000 mm ± 1 mm, width 1000 mm ± 0.5 mm. Surface: 2 m 2. Aperture surface: 1.95 m 2. Weight: 19 kg. Interior volume: 32 litres. Connection openings ISO G 3/4. Pressure control resistance: 6 bar. Maximum working pressure: 3 bar. Nominal flow: 90 l/h m 2. Solar panel for swimming pools V-01850 1 HYDRAULIC CHARACTERISTICS Pressure drop 400 350 300 250 mmca 200 150 100 50 0 0 1 2 3 4 l/min 92 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

ALL THE HYDRAULIC COMPONENTS REQUIRED FOR A SOLAR INSTALLATION Air vent valve with ball valve Solar hydraulic pump units (or Drain-back system) Collectors field 03 Solar expansion vessels Support system Boiler Swimming pool Zone valve Drain valves with air separators Solar DHW kit Hot water tank Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 93

SOLAR HEATING SYSTEMS DRAIN UNIT: HYDRAULIC UNIT WITH DRAIN-BACK SYSTEM A solution to prevent overheating and freezing. ADVANTAGES BIGGER SAVINGS simply select all the components you need COMPATIBLE with all the collectors, heat exchangers and regulators on the market For INSTALLATIONS with a larger number of collectors than other market alternatives HOW DOES IT WORK? System off - Collectors empty OFF Maximum temperatures OFF System off - Collectors empty (no danger of vaporisation) OFF OFF ON ON System start-up - Filling circuit temperatures -0ºC System off - Collectors empty (no danger of freezing) OFF OFF ON System running - Forced circulation OFF 94 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

SELECTION GUIDE The Drain-Unit selection is determined by the height of the installation. Bear in mind the difference in height between the top of the collector array and the bottom part of the Drain-Unit positioning. N.b.: less pump power required if the Drain-Unit is installed just above the collector field. HEIGHT OF INSTALLATION* 3-5 metres 5-10 metres 10-15 metres 3-10 metres 10-15 metres RECOMMENDED MODEL 6-metre pumps 6-metre + 6-metre pumps 11 + 6-metre pumps 11-metre pumps 11 + 6-metre pumps ECONOMY MODEL 6-metre pumps 11-metre pumps Unfit 11-metre pumps 11 + 6-metre pumps NUMBER OF COLLECTORS** 1-5 1-4 1-4 4-10 4-8 *Height from the top of the solar collectors to the lowest point of the drain unit **Calculated for a collector capacity of 1.25 litres and tube 15 mm. It can be used with installations that have a larger number of collectors than other market alternatives. The volume of the circuit above the drain unit must not exceed 8 litres of working volume of the air separator in drain units with a single tank (or 16 litres for drain units with 2 tanks). Volume calculation in upper part: Volume Nº of collectors Volume of fluid = + + in collector Volume of pipes 03 DRAIN UNIT WITH INTEGRATED REGULATION Maximum operating temperature: 110ºC. Maximum peaks: 130ºC. Safety valve calibration: 3 bar. Flow indication range: 2-12 litres/min. Maximum separation volume: 8 litres. Connections: bicone nut for a Cu15mm o ½ M pipe. Control options with pre-connections made. Consult for adaptability to other regulations. TWO 6-metre PUMPS PUMPS REGULATION ARTICLE 6 metres + 6 metres Basic (3 sensors, 1 relay) 74110BA 6 metres + 6 metres Vision (6 sensors, 3 relays) 74110VI Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 95

SOLAR HEATING SYSTEMS DRAIN UNIT WITH INTEGRATED REGULATION ONE 11-metre PUMP PUMPS REGULATION ARTICLE 11 metres Basic (3 sensors, 1 relay) 74200BA 11 metres Vision (6 sensors, 3 relays) 74200VI ONE 6-metre PUMP PUMPS REGULATION ARTICLE 6 metres Basic (3 sensors, 1 relay) 74100BA 6 metres Vision (6 sensors, 3 relays) 74100VI 96 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

DRAIN UNIT WITH INTEGRATED REGULATION TWO 11+6-metre PUMPS 03 PUMPS REGULATION ARTICLE 11 metres + 6 metres Basic (3 sensors, 1 relay) 74210BA 11 metres + 6 metres Vision (6 sensors, 3 relays) 74210VI DRAIN UNIT WITHOUT REGULATION Maximum operating temperature: 110ºC. Maximum peaks: 130ºC. Safety valve calibration: 3 bar. Flow indication range: 2-12 litres/min. Maximum separation volume: 8 litres. Connections: bicone nut for a Cu15mm o ½ M pipe. Consult for adaptability to other regulations. Recommended characteristics: Solar regulation with a differential relay. Maximum temperature function of collector 110ºC. (recommended). Difference in activation temperature 10-15ºC.(recommended). PUMPS REGULATION ARTICLE 6 metres + 6 metres - 74110 11 metres - 74200 6 metres - 74100 11 metres + 6 metres - 74210 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 97

SOLAR HEATING SYSTEMS For installations with twice as many solar collectors as the existing system. DRAIN UNIT: NEW HYDRAULIC UNIT WITH DRAIN BACK SYSTEM Maximum operating temperature: 110ºC. Maximum peaks: 130ºC. Safety valve calibration: 3 bar. Flow indication range: 2-12 litres/min. Maximum separation volume: 16 litres. Connections: bicone nut for a Cu15mm o ½ M pipe. Control options with pre-connections made. Consult for adaptability to other regulations. ONE 11-metre PUMPS In case of no regulation options, the regulation must comply with the following characteristics: - Solar regulation with a differential relay. - Maximum temperature function of collector 110ºC. (recommended). - Difference in activation temperature 10-15ºC.(recommended). PUMPS REGULATION ARTICLE 11 metres Basic (3 sensors, 1 relay) 74200BADO 11 metres Vision (6 sensors, 3 relays) 74200VIDO 11 metres NO 74200DO 98 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

DRAIN UNIT: NEW HYDRAULIC UNIT WITH DRAIN BACK SYSTEM TWO 11+6-metre PUMPS 03 PUMPS REGULATION ARTICLE 11 metres + 6 metres Basic (3 sensors, 1 relay) 74210BADO 11 metres + 6 metres Vision (6 sensors, 3 relays) 74210VIDO 11 metres + 6 metres NO 74210DO Drainback tank extension kit Tank V-00625 1 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 99

SOLAR HEATING SYSTEMS HYDRAULIC UNITS HIGH EFFICIENCY The optimum efficiency of the sun as a power source The SolarOrkli line opts for technologically innovative products contributing to smarter, more sustainable consumption of renewable energies. An example are the high-efficiency solar hydraulic units, which include components that can increase energy efficiency by almost 50%. 100 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

HYDRAULIC UNITS HIGH EFFICIENCY Maximum working temperature in flow branch: 120ºC. Maximum working temperature in return branch: 100ºC. Maximum working temperature of safety valve: 160ºC. Safety valve calibration: 6 bar. Thermometer temperature range: 0-120ºC. Flow meter indication range: 2-12 l/min. (visual flow meter); 2-40 l/min. (electronic). High energy efficiency pump with cabling preconnection. External PWM pump modulation. Hydraulic unit for solar collector fields up to 16 m 2. Consult for adaptability to other regulations. Pump consumption range: 4-60W. Energy count option on models with electronic sensors. Manometer scale: 0-10 bar. Connections: 3/4"H. Branch distance: 95 mm. Regulation with connections made. EPP insulation. + 03 HYDRAULICS PUMP CLIMATE CONTROL ELECTRONIC FLOW EXPANSION ARTICLE BASIC HE TEMPERATURE AND VESSEL JOINT PRESSURE SENSORS ACCESSORIES Complete Yonos Para ST 15/7 PWM YES YES YES 73140BAHE Complete Yonos Para ST 15/7 PWM YES NO YES 73100BAHE Complete Yonos Para ST 15/7 PWM YES YES NO 73040BAHE Complete Yonos Para ST 15/7 PWM YES NO NO 73000BAHE Complete Yonos Para ST 15/7 PWM NO YES YES 73140HE Complete Yonos Para ST 15/7 PWM NO NO YES 73100HE Complete Yonos Para ST 15/7 PWM NO YES NO 73040HE Complete Yonos Para ST 15/7 PWM NO NO NO 73000HE Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 101

SOLAR HEATING SYSTEMS HYDRAULIC PUMPING UNITS WITH INTEGRATED CONTROL Maximum operating temperature in flow branch: 160ºC Flow indication range: 2-12 l/min. Maximum operating temperature in return branch: 110ºC. Manometer scale: 0-10 bar. Maximum operating temperature in safety valve: 160ºC. Connections: 3/4 H. Hydraulic unit for collector fields of up to 16 m 2. Distance between branches: 95 mm. Safety valve calibration: 6 bar Control with connections made. Thermometer temperature range: 0-120ºC. Consult for adaptability to other regulations. + HYDRAULICS PUMP* CLIMATE CONTROL EXPANSION ARTICLE FLOW RETURN VESSEL JOINT BRANCH BRANCH ACCESSORIES Complete Complete ST 15/6eco Basic (3 inputs, 1 relay) NO 70000BA Complete Complete ST 15/6eco Vision (6 inputs, 3 relays) NO 70000VI Complete Complete ST 15/6eco Basic (3 inputs, 1 relay) YES 70100BA Complete Complete ST 15/6eco Vision (6 inputs, 3 relay) YES 70100VI Note: Consult pump curves. + Note: Consult pump curves. HYDRAULICS PUMP* CLIMATE CONTROL EXPANSION ARTICLE FLOW RETURN VESSEL JOINT BRANCH BRANCH ACCESSORIES NO Complete ST 15/6eco Basic (3 inputs, 1 relay) NO 70020BA NO Complete ST 15/6eco Vision (6 inputs, 3 relays) NO 70020VI NO Complete ST 15/6eco Basic (3 inputs, 1 relay) YES 70120BA NO Complete ST 15/6eco Vision (6 inputs, 3 relays) YES 70120VI 102 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

HYDRAULIC PUMPING UNITS WITHOUT REGULATION Maximum operating temperature in flow branch: 160ºC Maximum operating temperature in return branch: 110ºC. Maximum operating temperature in safety valve: 160ºC. Hydraulic unit for collector fields of up to 16 m 2. Safety valve calibration: 6 bar. Consult for adaptability to other regulations. Thermometer temperature range: 0-120ºC. Flow indication range: 2-12 l/min. Manometer scale: 0-10 bar. Connections: 3/4 H. Distance between branches: 95 mm. + 03 HYDRAULICS PUMP* CLIMATE CONTROL EXPANSION ARTICLE FLOW RETURN VESSEL JOINT BRANCH BRANCH ACCESSORIES Complete Complete ST 15/6eco NO NO 70000 Complete Complete ST 15/6eco NO YES 70100 Note: Consult pump curves. + HYDRAULICS PUMP* CLIMATE CONTROL EXPANSION ARTICLE FLOW RETURN VESSEL JOINT BRANCH BRANCH ACCESSORIES No Complete ST 15/6eco NO NO 70020 No Complete ST 15/6eco NO YES 70120 Note: Consult pump curves. Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 103

SOLAR HEATING SYSTEMS HYDRAULIC UNITS FOR MAJOR INSTALLATIONS FOR COLLECTOR FIELDS OF UP TO 50 M 2 SAVINGS! 70% SAVINGS ON LABOUR COSTS FOR COMPONENT INSTALLATION ALL HYDRAULIC COMPONENTS PRE-ASSEMBLED 104 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

HYDRAULIC UNITS FOR MAJOR INSTALLATIONS Maximum operating temperature in flow branch: 160ºC. Maximum temperature in return branch: 110ºC. Maximum temperature of safety valve: 160ºC. Hydraulic unit for collector fields of up to 50 m 2. Safety valve calibration: 6 bar. Thermometer temperature range: 0-120ºC. Flow indication range: 5-40l/min. Manometer scale: 0-10 bar. Distance between branches: 125mm. Connections: 1 1/4" for flexible pipe DN25 and bicone nut for a pipe Cu 28mm. Connection for expansion vessel: ¾ M. Consult for adaptability to other regulations. 03 PUMP PIPE Cu28 JOINT ACCESSORIES ARTICLE TOP S 25-13 (13 metres) NO 75000 TOP S 25-13 (13 metres) YES 75100 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 105

SOLAR HEATING SYSTEMS HYDRAULIC CHARACTERISTICS HYDRAULIC UNITS HIGH EFFICIENCY External control via PWM H/m p/kpa 4660/ 5 PWM1 / 95 PWM2 Wilo-Yonos PARA ST 7 6 4178/15 PWM1 /85 PWM2 15/7.0, 25/7.0, 30/7.0 1~230 V - Rp ½, Rp 1, Rp 1 ¼ n-1/min/%pwm 1/% PWM 2 70 60 5 3695/25 PWM1 /75 PWM2 50 4 3213/35 PWM1 /65 PWM2 40 3 30 2730/45 PWM1 /55 PWM2 max. 2 20 2248/55 PWM1 /45 PWM2 1 1765/65 PWM1 /35 PWM2 1283/75 PWM1 /25 PWM2 10 800/85 PWM1 /15 PWM2 0 0 0 0,5 1,0 1,5 2,0 2,5 3,0 Q/m 3 /h 0 0.2 0.4 0.6 0.8 0 2 4 6 8 10 Q/l/s Q/lgpm p 1 /W 40 max. 20 0 0 0,5 1,0 1,5 2,0 2,5 3,0 Q/m 3 /h Tolerances of each curve according to EN 1151-1:2006 106 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

ST15/6 ECO 6 5 Head (m) 4 3 2 03 1 0 0,5 1 1,5 2 2,5 3 3 Water flow (m 3 /h) Top S-25-13 Flow height (m) 13 12 11 10 9 8 7 6 5 4 3 2 1 min. máx. 0 0,4 0,8 1,2 1,6 2 2,4 2,8 3,2 (m 3 /h) Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 107

SOLAR HEATING SYSTEMS OKFRESH - Fresh Water Station Instant hot water whenever you need it The Fresh Water Station is a system that guarantees instant hot water whenever it is required, at just the right temperature. This system guarantees coverage of your domestic hot water needs, avoiding any hygiene or power loss problems connected with domestic hot water storage. With its instant hot water principle, Orkli's Fresh Water Station is the ideal system for use in homes, residences or sports complexes, and it is perfect for use with renewable energy heating installations. It is simple to install and can be easily adapted to the users' requirements. COMPONENTS DCW inlet Primary circuit outlet DHW circulation system Flow switch in DCW inlet. (To activate the pump when DHW is demanded) Plate heat exchanger Heating circulation HE pump DHW outlet temperature sensor Primary circuit intlet Mixing 3 ways valve (It controlles DHW outlet temperature, using a distance sensor that acts on the primary water circuit) DHW outlet 108 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

Instantaneous domestic hot water production. Stainless steel 90 kw heat exchanger. Domestic hot water production capacity 30 l/min. or 20 l/min. (depending on the number of heat exchanger plates). Flow meter activation = 2 l/min. DHW temperature controlled by a thermostatic valve acting on the primary circuit's 3-way mixing valve to regulate the heat exchanger flow. Ensures a low return temperature of the water in the primary circuit (to aid stratification). Connection for an optional DHW circulating system available. The highest temperature is concentrated in the component in the lowest location so that the heat is naturally transferred to the top part of the heat exchanger, cooling down the hot zone and preventing problems with scale. Available in July 03 Fresh Water Station S40000003 1 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 109

SOLAR HEATING SYSTEMS INDIRECT HEAT EXCHANGE SOLAR KIT The indirect heat exchange solar kit is designed for centralised solar heating installations with distributed back-up power. Each home has an individual back-up power source and its own interior distribution circuit supplying domestic water. This kit regulates the recirculation inlet to the home from the circuit previously heated by the solar collector. If the kit detects that a tap has been turned on and hot water is required, the flow to the heat exchanger is opened to preheat the domestic water inlet. When the hot water tap is turned off, the 3-way valve opens the bypass again and shuts off the flow to the heat exchanger. The shut-off valves allow the central recirculation system to be completely blocked off at all the inlets. Fastening template Heat exchanger Heating output Heating input HWR input HWR output 3 ways valves Hydraulic valve 110 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

did you know? that if you wish you may complete the totally regulated installation with the solar domestic water kit? If there is no DHW demand: If there is DHW demand: Heating output Heating input HWR output HWR input Heating output Heating input HWR output HWR input 03 Dimensions: 350 x 308 x 115 mm. Heat exchanger power: 35KW. Activation flow: 2L/min. Maximum HWR operating flow: 15L/min. Maximum heating operating flow: 20L/min. Maximum HWR pressure: 15bar. Maximum heating temperature: 70ºC. Connections: ¾ M. Solar Kit S40000002 1 HYDRAULIC CHARACTERISTICS Hot water circuit Heating 1000 500 H (m) 800 400 600 300 400 200 200 100 H (m) 0 0 0 200 400 600 800 0 200 400 600 800 1000 Flow (L/h) Flow (L/h) Hot water circuit Circuit bypass Circuit heat exchanger Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 111

SOLAR HEATING SYSTEMS SOLAR DHW KIT A universal kit for connecting a solar hot water tank to a conventional domestic hot water source Unit for connection to the auxiliary domestic water heating units installed between the solar water tank and this back-up power source, normally an instant water heater or a gas or electric water heater. It includes a 3-way valve, which determines whether the water from the solar water tank should be conveyed via the back-up power source or can be directly sent on for consumption, and a mixing valve regulating the outlet temperature of the domestic hot water in the solar heating + conventional back-up system. Solar hot water tank Domestic hot water outlet From the solar collector field Mains water connection Return to the solar collector field 112 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

Hydraulic diagram: If water in solar hot water tank >48ºC If water in solar hot water tank <48ºC Domestic hot water outlet Mains water connection From the solar hot water tank >48ºC Domestic hot water outlet Mains water connection From the solar hot water tank <48ºC 03 SOLAR DHW KIT Valve material: brass, according to EN12165 standard. Closure gasket material: EPDM. Connections: ½, or 15 mm copper pipes. Maximum operating temperature: 90ºC. Maximum operating pressure: 10 bar. Calibration of 3-way valve/bypass temperature: 48ºC. Bypass temperature tolerance: +-2ºC. Thermostatic mixer regulation range: 30-60ºC. Mixing outlet temperature calibration: 45ºC. Components suitable for use with domestic water. Solar dhw kit S40000001 1 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 113

SOLAR HEATING SYSTEMS ZONE VALVES To be used in solar system primary circuits. Fluid: water with glicol up to 50%. 2 ways - Without run-end micro: 3 wires improvements More robust transmission Fluid temperature -20ºC - 160ºC. Normally closed in A. 2 ways - With run-end micro: 5 wires improvements More robust transmission 1/2" 30112200 10 3/4" 30212200 10 1" 30312200 10 1/2" 30122200 10 3/4" 30222200 10 1" 30322200 10 3 ways - Without run-end micro: 3 wires improvements More robust transmission 3 ways - With run-end micro: 5 wires improvements More robust transmission 1/2" 40112200 10 1/2" 40122200 10 3/4" 40212200 10 3/4" 40222200 10 1" 40312200 10 1" 40322200 10 M-M SOLAR ZONE VALVES 2 ways - Without run-end micro: 3 wires M-M improvements More robust transmission 2 ways - With run-end micro: 5 wires M-M improvements More robust transmission 3/4" 30612200 10 1" 30712200 10 1" 30722200 10 3 ways - Without run-end micro: 3 wires M-M improvements More robust transmission 3 ways - With run-end micro: 5 wires M-M improvements More robust transmission 3/4" 40612200 10 1" 40712200 10 1" 40722200 10 Note: Same discount as zone valves section. 114 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

SAFETY VALVES Safety valve for solar installation primary circuits. Suitable for working with 50% water-glycol mixture. Maximum operating temperature: 160ºC. Solar safety valve certification: TÜV SV 07 2012 SOL 50 Consult for other setting options. Note: Same discount as valves and safety groups section. FLOWMETERS Flow indication range:5/40 l/m y 2-12 l/m. Includes: filling/emptying tap. Maximum operating temperature: 110ºC. Flow regulation. Vertical installation. Suitable for use with 50% water/glycol mix. 1/2"F - 3/4"F (3 bar) 17175-00 50 1/2"F - 3/4"F (4 bar) 17176-00 50 1/2"F - 3/4"F (6 bar) 17177-00 50 1/2"F - 3/4"F (8 bar) 17178-00 50 1/2"F - 3/4"F (10 bar) 17179-00 50 03 3/4" F - 1" F (loose nut) / 2-12 l/m E-23045 1 3/4" F - 1 1/2" F (loose nut) / 2-12 l/m E-23046 1 1 1/4" M - 1 1/2" F (loose nut) / 5-40 l/m E-25292 1 SAFETY GROUPS Set a 7 bar. Featuring: - Locking tap. - Purging or vacuum device. - Antireturn device. To be used in solar system primary circuits. Straight orientation AISI 302 stainless steel valve spring. Chemical-nickel treated brass valve shaft. To be assembled outside. Special plastic omponents for UV rays. 3/4" 24170 20 3/4" with adaptor to 1/2" 24470 20 Note: Same discount as valves and safety groups section. COMPENSATION VALVES Designed to work outdoors. Stainless steel spring. Plastic lever adapted to resist UV rays. 1/2" - 7K 10576 120 3/4" - 7K 10577 90 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 115

SOLAR HEATING SYSTEMS DRAIN VALVES/AIR SEPARATORS Automatic drain valve Maximum operating temperature 150ºC. Suitable for working with water-glycol mixture. Maximum operating pressure 6 bar. Air separator Maximum operating temperature 150ºC. Suitable for working with water-glycol mixture. Maximum operating pressure 6 bar. To be installed in horizontal lines. 3/8" (to be installed with ball valve) E-22721 1 3/8 with accessories for 22 mm Cu pipe E-22723 1 3/8" air vent valve with ball valve E-22722 1 MIXING VALVES Thermostatic mixing valves for domestic water Include two filters and two antireturns at the inlet and outlet. Kv 1,5 m 3 /h. 3/4" M E-19806 1 1/2" M without nuts E-19809 1 1/2" H without nuts, 2 ball valves E-19810 1 CONTROLS FOR SOLAR HEATING INSTALLATIONS Controls for solar heating installation primary circuits. Temperature sensors included. 3 inputs, 1 relay. 6 inputs, 3 relays. Diagrams with: - Two collector fields, 2 pumps. - 1 Pump + zone valve; two accumulators. - 1 Pump + zone valve; two collector fields. 3 inputs, 1 relay and temperature limitation E-22724 1 6 inputs, 3 relays and temperature limitation E-22725 1 SOLAR EXPANSION VESSELS Maximum operating temperature 130ºC. Suitable for working with water-glycol mixture. Connection 3/4. Connection 1"M. 12 liters E-22726 1 35 liters E-24891 1 18 liters E-22727 1 50 liters E-24892 1 24 liters E-22728 1 80 liters E-24893 1 116 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com

ACCESSORIES FOR EXPANSION VESSELS Includes: Wall fixing plate, 3-piece connector, flexible hose, rawlplugs, screws. 3/4" F connection E-23051 1 03 Tel.: +34 943 80 94 80 Fax: +34 943 80 52 41 www.orkli.com 117