TECHNICAL MANUAL - Megasun Solar Systems

Installation InstructionsInstructions to the end user and installerinstructions to the end user andinstaller• The solar systems do not require the interventionof the user. It is recommended though, that afterthe first 15 days of functioning, to check the pressureof the closed circuit (collector - boiler) andthat the temperatures are at normal levels in relationwith the time of the inspection, the sunlightand the «Installation Sheet».• After two years of functioning, it is recommendedthat a program of annual service is begun. Themaintenance program is to replace the fluid loopcircuit and maintain the proportions of propyleneglycol, replacing the magnesium anode andcheck the operation of all existing valves• If there is a breakage of collector’s glass, it mustbe replaced immediately so that the absorber wiillnot be damaged.• In dusty conditions or small rainfall, it is recommendedto clean the glass with a damp cloth, ifthe collectors are dirty . It is also recommendedthat the glass of the collectors are washed atleast twice a year with water, except if it oftenrains.• After the installation is complete, the installer willhave to inform the client about the functioning ofthe system.• In the case of any malfunction of the system, werecommend the client to contact the installer ashe knows all of the various parameters and thepossible particular characteristics of the installation.• The valves must be periodically checked toassure their correct functioning .• The installer who will make the disassemblymust be a specialized and certified installor inaccordance with the national regulations thatapply in your country. When the installation iscompleted he must leave the place in the sameconditions as before the installation.• The mixing valve (when installed by the installer)must not be regulated in a temperature above60°C. There is only one thermostat and shouldnot be set up above 60 °C.• Before putting the system in operation, theinstaller must check all the valves and fittings,including also the loop circuit as well as the mainwater tank.• The safety valves must be checked periodically toassure their proper functioning• If there is a danger of frost , please check theloop circuit to confirm if the s antifreeze liquidconforms with the rules. In case of overheatingcheck the overheating valve to assure that thecircuit is working properly.• Do not start the system operation if the weatherconditions are around 0°C. Check the loop circuitand the quantity of the antifreeze liquid. Consultthe standards of the builder.• The thermal efficiency and the solar quantity ofthe system is according to paragraph 5.9 of EN12976-2, for loads defined on the proposed load.• NOTE: during high radiation do not close the supplyof water and do not empty the system• NOTE: The water consumption of the system canbe withdrawn during high radiations to preventthe overheating of the system.• The heat transfer liquid is propylene glycol• During periods of prolonged absence it is recommendedthe collectors to be covered with anopaque covering so that to avoid working unnecessarily. Do not use plastic material or glassmaterial for their cover.• The system does not use any electrical devicefor freeze protection, because it works with propyleneglycol.• The overheating protection of this system it is notelectrical dependent, however it should not bedisconnected from the electricity or water supplynetwork.INSTALLATION INSTRUCTIONS• The piping system used on the system isresistant to rain and moisture.• The hot water piping system is thermal insulated.• Sk maximum (snow load) is 2kN/m² according toENV 01/03/1991, and Vm (mean wind speed) is180 km/h.• Disclaimer: This equipment can be installed inareas with snow load values under 2kN / m² andthe wind speed average under 180 km/h.• Our equipments can be only installed with safetyvalve on the inlet cold water to prevent over pressure.Αn asfety valve to is also needed in caseswhere there is overheating circuit which usesmetal pipes (copper, stainless steel or steel) tohot water extraction. This pipe system is connectedto the extraction system of the equipment.This system should not cause any problems toany other building material.• The system should be used with mixing valve todraw-off temperature limit of 60 °C.• The installation of the system should be performedonly by authorized installer. Collectorsshould be covered during installation, for examplewith the same cover used for transportation.The collectors will be filled with propylene glycol+ water, without air. After that, the collectorscover can be removed. To start using the collectors,open the water. After that, you can usethe installation. To re-check, please perform thesame procedure.• The operation of the system can start since everythingwas checked and is correct.• The end user should also confirm that everythingis correct and uses the invoice has warranty.• Declaration: the sizing of the system dependson the climatic conditions of the area where thesystems is installed.• Check the gaskets, valves, fittings and thermalinsulation (replacing it if necessary). Furthermore,it should check the general state of metallic structureas well, screws and nuts, in order to detectany type of wear or damage. This is especiallyimportant in marine environments. The chargesfrom these repairs will be the responsibility ofthe owner.• If the water pressure exceeds 6 bar, you mustinstall a pressure reducing valve.• The system should be installed as close as possibleto the place of consumption of hot water. Itis very important to inform end user, of technicalaspects of installation, to agree with him all thedetails in this way, a secure installation and aestheticspossible, respecting the appearance ofthe building where it will be performed.• The system can be installed on the roof, terraceor garden, on a firm surface and sturdy, whichdoes not receive shade of nearby obstacles inany season.• Comply with current regulations on water andelectricity installations. Keep in mind the localconditions of wind, especially during assembly.The damage resulting from faulty installation arenot covered under warranty.• The tank must be full of water before filling theprimary circuit or filled with the heat transferfluid before connecting the electrical resistancebackup.• After finished the system installation, make surethat all leftover materials used on the installation,are collected, since they may cause injury ordamage to third parties.• The reading of this instruction manual is veryimportant, since its not checked, may void thewarranty.• The piping system used in this system is waterproofand moisture.• All pipes for conducting hot water are thermallyisolated.• a hose must be used for hot water draining tothe nearest gutter, to avoid damage in materialsor people.WARNING: THE INSTALLATION SHOULD NOTCOMPROMISE THE STRUCTURAL INTEGRITYOF THE BUILDING ON WHICH IS INSTALLED.IN THE CASE OF MALFUNCTION(Instructions to the installer)Ensure that:• The climate conditions permit the functioning ofthe solar system.• There is no shading of the collectors by anyobstacles and that they are clean from dust.• That there is no leakage in the closed circuit andthat all of the connections, raccords, and pipesare tightly screwed and water-tight.• That the function of the circulator is correctlyprogrammed.• The mixing valve for hot / cold water in the outletof the boiler is correctly adjusted and is functioning.• The pressure of the closed circuit (indication ofthe manometer on the hydraulic kit) is the same,with the one described on the «settup sheet»(around 1.5 – 2.5 bar). To start immediatelythe system fill the closed circuit with a mixtureor water and antifreeze liquid or adjust theautomatic filling tap, until reaching the indicatedpressure in the “installation sheet”.• There is enough liquid in the closed circuit of collectors- tank. During days with high radiationand normal operation of the pump, the pipes intheir highest points (outlet of collectors) shouldbe warm (be careful with the high heating due tosolar radiation).• The circulator is functioning if the weatherconditions allow for it’s function. By touchingthe circulator we can feel the vibrations of thesystem. Check the electric current on the electricboard and• There is no air in the expansion vessel and thesafety valve was not opened.Note: All the connections and the installationsmust be done according to the regulations (electrical,plumbing, urbanism and others) that applyin your area. Instructions to the customer andinstaller In the case of the malfunction of the systemand before contacting the installer, distributoror agent, please have at hand the information onthe next page.The product warranty terms and condition apply.43