Solar Water Heater Owners Guide
Contents
1. a Air vents of overhead tank a Provide suitable air vent for both irregular Large drop in overnight tem perature The water is only luke warm and solar water heater is not provided or blocked b Air lock C Cold water inlet pipe inside tank choked by sediment or scales a Ineffective insulation b The insulation is wet c Excess heat loss in hot water pipeline a Cloudy day b Glass tubes not cleaned c The monkey protection mesh is dirty d Solar water heater not getting enough sun light e Reverse flow of cold water in to the solar water heater tank In case of mixing valve f Hot water pipeline not insulated properly g Hard water scale deposits in the glass tube and tank h Excessive consumption of hot water the previous night the tanks clean the vent pipe and put it back properly b Remove hot water outlet pipe from valve to clear air or drain and refill water from the solar water heater c Clean the pipe with long wirebrush after removing makeup tank a Check the insulation around the storage tank b Ensure that the insulation is dry If it is wet due to rain leaking through the cladding or due to a leak in the tank then it will not keep the water in the system warm c Install as per installation guide lines a Use electrical back up if provided b Remove dust which has accumulated on the glass tubes c Clean the monkey protection mesh r2. backup at 40 degree centigrade This is usually sufficient for a hot water shower A higher setting will increase your electricity bills Heating time for 1 5 3 Kw element in ETC gt Es e a E e E O o LO gt A O Oo c r e lt U O Y pan gt O La 75 100 125 150 175 200 225 250 275 300 Litres of water 6 Paint the MS support stand once in four five years Though the supporting structure and other MS parts are powder coated for long rust free life inspect occasionally and paint them if needed 7 Regularly inspect the solar water heater tank to make sure it s not damaged and that no rainwater runs into the tank insulation Also check for any rusting in the plumbing lines Do necessary repairs using the authorized service provider 8 To drain the water from solar water heater for cleaning or repair Disconnect the cold water inlet pipe line and open the cold water inlet valve Fig 4 9 If the water in your area is hard it is recommended to clean the solar water heater main tank and glass tubes with fresh water once a year to flush out the settled scales In places where the hardness of water is very high it is advised to clean the solar water heater more frequently 10 Do not to carry out any repairs or replacement of parts of the solar water heater on your own Consult your authorized service provider for help 11 Ask your authorized s
3. the tap Not getting hot water from overhead tank or hot water outlet pipe from the solar water heater is choked by sediment or scales b No cold water supply to solar water heater from overhead tank c Cold water inlet valve is shut d Float valve in the make up tank has jammed or chocked e Non return valve stuck f Air is trapped in the cold or hot water pipe line a The solar water heater is not receiving enough sun light b Excess water consumption Undersized c Incorrect connection of cold water and hot water pipes to solar water heater storage tank d Cloudy day not enough sun light e Cold water pressure due to mixing valve preventing the hot water coming through a Clean the pipes amp descale sediment b Fill the overhead cold water tank C Open the valve d Clean the float valve or replace it e Remove amp clean NRV spring f Open the hot water outlet pipe near the valve and remove the air or drain the water out of the tank and fill it again a Relocate in unshaded area b Plan your water usage as per installed capacity In case of high consumption use the electric back up c Shorten the hot water plumbing line or increase the capacity of the system d Use the electrical back up e Run hot water slowly at first and then gradually open up the cold water tap for optimal mixing of hot and cold water at the point of use Hot water flow
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5. Ss D r O D x D r gt amp O U Auroville Renewable Energy Dear Friends Greetings from Aurore Congratulations on acquiring an Aura solar water heater You have joined a growing family of conscious change makers who have started using renewable energy for their daily use You are saving precious electricity and contributing towards the reduction of harmful carbon dioxide emitted in the production of electricity Through our network partners we will ensure that you are able to derive the maximum benefit from your solar water heater Here is some background on our organization Aurore is located within Auroville International Township near Puducherry Our goal is to provide high quality products and services in the area of renewable energy and energy efficiency Our aim is to work towards building a society which derives its energy from renewable sources of energy Sun a gift of Mother Nature makes inexhaustible energy available to us Any efforts towards harnessing energy from the Sun is a contribution towards conserving life on earth Our engineers and researchers are on the constant look out for reliable and affordable solar energy solutions for domestic and commercial usage Our aim is to provide high quality products at affordable prices To ensure long lasting performance we tie up with our network partners to provide dependable service and after care for your valuable asset We hope that you find u
6. d with a maximum pressure of 2 75 meters of water If it is more than 2 75 meters of water column or if a pressure pump is being used then a small insulated steel tank called Make up tank should be installed to reduce the pressure Electrical heater Domestic solar water heaters have a provision for installing a 1 5 or 3 KVA back up electrical heater with a built in thermostat The heater can be used on days when there is no sun or if the hot water requirement increases suddenly Plumbing 1 2 Kitec pipes for inlet outlet drain and vent Insulation sleeve for vent Non return valve NRV at outlet WARRANTY CARD Upon installation of the solar water heater the dealer responsible for the sale will fill out the warranty card and the customer will complete a record of it and retain it for future servicing This limited warranty covers the glass tubes hot water tank and tank support frame for tube breakage leakage or any other malfunction caused by defects in the materials and or workmanship It extends to the first buyer and to any subsequent owner s as long as the water heater has been installed by trained and qualified authorized technicians approved by the local dealer On glass tubes the limited warranty is for a period of 5 years from the date of purchase This warranty excludes loss of vacuum in a tube or tubes due to breakage during transport handling or after installation A gradual reduction in vacuum levels over time is norma
7. egularly to avoid this problem d Relocate in unshaded area e Close cold amp hot water tap of the mixing valve after use f Insulate the pipeline with suitable insulation g Clean the glass tubes and tank with fresh water h Plan your shower bath according to the system s capacity use electrical back up heater if required BEL en hr NN Water is boiling and steam is being released from vent Electrical backup not working The solar water heater is leak ing Water over flows from air vent or make up tank a System not in use for a long time b Failure of thermostat a Wrong wiring connections b Inappropriate thermostat temperature c Lightning strike d Short circuit e Electrical heater thermostat failure a The solar water heater or plumbing line has a leak a Reverse flow of cold water in to the solar water heater tank In case of mixing valve b Inappropriate air vent length c Float Valve stuck in the make up tank a If the system is not being used cover the glass tubes with a shade or install a steam trap on the air vent b Change the thermostat a Connect according to the wiring diagram b Set the thermostat for a comfortable bath between 35 45 degrees centigrade c Inspect replace fuse heater element and thermostat d Inspect replace fuse heater element and thermostat e Replace with a new one a Try to d
8. ervice provider for an Annual Maintenance Contract once the warranty period is over Check with him for an updated version of the owners guide After Care Do s amp Don ts 1 This is a non pressurized solar water heater and it should not be connected directly to a pressure pump or more than four metres of water pressure Check with MEN Authorized Service m provider for more II information III 2 Do not connect any other Xx equipment to the cold water inlet line wa of the solar water heater 3 Do not use a pipe wrench If the system has to be disassembled and reassembled care should be taken not to use a pipe wrench to connect the cold water hot water and vent pipes to the solar water heater If you do it may cause severe damage to the tank and result in water leakage After use 4 If mixing valves are used it is strongly advised to close the hot water Mixing Mixing and cold water tap after use and to y lever pve keep the mixing lever in the middle cp Q position Hot Cold Hot 4 Cold open open closed closed x V 5 The water temperature can be very high in the summer months and steam can be observed coming out of the vent pipe If the solar water heater is not in use in the summer or for a long period of time it is advisable to cover the glass tubes with a canvas cloth or a mat 6 Ensure that there is always a cold water supply to the solar water heater Leave the
9. etermine the source of the leakage If it is not rainwater fix the leak If the problem persists call the authorized service provider a Close cold amp hot water tap of the mixing valve b Increase the length of the air vent as per installation guide lines c Clean or replace the float valve in the make up tank o 4E 0 0 0 1 1 J JUBUBM ueis s IN Of een gn SIB G lt leg O 002 01 O 00 lelsouu8ul MM GL dnyoeg e911199 3 0 6 lt oinje19dLuU JOJEM Jeg y O oJnssoeJd LU IS S XB N uoddns USA yimqui uj 9a s PIL paJe09 19pmog a1njon1s yoddng WeO4 sueylalm joJ 43M WW OG uone nsur que WW G JOJOUUBI qUe Jauu WW G p Jo euJeip que Jamo SSOUYOIU WW 9 0 apes6 gz r0 ISIV ue J UU SSOUYOIU ww Q Jeeis peiured apelb gz poe ISIV uogdo quel Jamo sjuiof ye 40 pasn Bojouyoa Buipjam UON seas SOF ww 9 SSOUYIIY sqn Jeuu LULU g ss uyolu eqni J9INO IV NAVI SS nO Sbuneoo qn sua Ae agny Ur 0081 wue eqnj SE AS E GR G I9quinN sel 00 sem osz sem o0z sem ost sm ser semi 00r euinjon yue eDexois 00 9101ny 0GZ 910 ny 00Z 9101ny OG 9101ny s L e10iny 001 10iny PON N Technical Specifica 133 cms Model Width cms Aurore 100 106 Aurore 125 199 Aurore 200 193 Aurore 250 235 00 Aurore 300 3 Accessories Makeup Tank The Domestic Solar water heater is designed to be use
10. heating up the water in the glass tubes As the specific gravity of cold water is heavier than hot water the hot water in the glass tubes starts rising in the insulated water tank and the cold water in the insulated water tank sinks into the glass tubes As this cycle is repeated water in the solar water heater gets heated This process is known as thermosiphon and is based on natural convection Fig 3 The storage tank is insulated so the water stays hot and can be used later in the day or even the following day Inside View of Tank Heat vent Hot water Cold water outlet pipe Polyurethane inlet inside tank 50mm 1 j Hot water Cold water inlet Electrical pipe inside tank Drain or cold water inlet Earthing Hot water outlet Thermosiphon 5 RO Hot water Performance The output of a solar water heater system will depend on the amount of solar radiation available On a good sunny day with 6 to 7 hours of sunlight the glass tubes will collect enough solar energy to heat water up to 60 C On a good sunny day the water temperature can rise very high and you may spot steam coming from the vent this is perfectly normal Rainy days These tubes perform very well in overcast conditions and in low temperatures With evacuated glass tube technology the reliability of the system increases since the temperature inside the glass tube is independent of the surrounding temperature However there is a
11. ich is properly supported Do not touch or put cold water inside the glass tube if the tube has been exposed to sun without water E e The back up electrical element should be installed by a trained PA electrician who should provide a proper earth connection and As 1 protect the cable connections from water and moisture Do not use a pipe wrench for installation of pipe lines Kitec fitting 3 Y NOTE Before using the Solar Water Heater Test water before bathing Hot water above 50 9C can cause severe burns Households with small children disabled or elderly persons should use hot water only under adult supervision Use back up electrical element only when required It is recommended to switch OFF the electrical element before taking onan CAUTION Do not drop hard objects on the glass tubes water inlet and hot water outlet valves immediately and call our authorized service provider for rectification of problem Blockage or damage to the vent pipe can create severe damage to the solar water heater Should this occur call the authorized service provider immediately In case of emergency like breakage of tubes or leakage in tank close the cold Working Principle of a Solar Water heater A solar water heating system consists of a vacuum glass tube collector an insulated storage tank and connecting stand parts page 4 The evacuated glass tubes are filled with water and exposed to sun thus
12. l and accordingly is not a defect in terms of this warranty The limited warranty on the hot water tank and support frame is for a total period of 1 year from the date of purchase This warranty also does not cover Cover leakage or breakage of tubes or other malfunctions caused by defective installation misuse operation and maintenance contrary to the written instructions in the user manual Odiferous discoloured or rusty water coming from the system Damage to surrounding area or property caused by leakage or malfunction of the system Costs associated with the replacement and or repair of the unit including freight shipping or delivery charges removal installation or re installation charges any material and or permits required for installation re installation or repair All legal disputes to be settled in Puducherry To facilitate warranty service you should 1 Follow all instructions enclosed with the product 2 Retain all bills of sale or receipts for proof of installation etc 3 Contact your installer or dealer as soon as any problem or defect is noticed 4 When necessary allow our chosen representative to inspect the unit Product Model No Product Serial No Name of Purchaser Dealer s Stamp Date NZ Solar Water heaters Represented by AURORE Auroville Renewable Energy CSR Office Auroshilpam Auroville 605101 Tamil Nadu Phone 0413 2622749 168 277 Fax 0413 26
13. provision for electrical back up which can be used on overcast days and on days when there is a need for additional hot water See Accessories pg 23 installation Tips 1 The location of the solar water heater should be south facing on an even surface with plenty of sunlight and free of shadows between at least 9 am and 4 pm Fig 4 South facing 1300 Grouting Ground or root hard surface 2 The solar water heater is designed to be used with a maximum head of 4 meters of water It should be connected to an overhead water tank the bottom of which should be at least one meter above the top of the solar system and not more than 3 meters high Fig 5 3 Wherever wind speed is high the solar water heater should be grouted properly to the roof of the building Fig 4 A lightning conductor can be fitted if required 4 Connect the cold water inlet port preferably by a dedicated pipeline from the overhead water tank 5 Connect a valve to the hot water outlet port Fig 5 6 to shut off the flow of hot water for maintenance or in case of leakage or any other emergency 6 The distance between usage points and the solar water heater should be minimised as much as possible the maximum recommended distance with insu lated hot water pipe line without substantial heat loss is 12 meters 5 Pipeline Installation with Vent grouting Vent erhead tank lt Ja eM po Y Earthing 6 Pipeline Installation with P
14. ressure Pump Vent Hot water outlet inside arhead tank Cold water Main tank Inlet inside tank Drain Vent support Shower outlet Fi Ew Pressure pump Mixing valve Earthing 4 Hot water gt eS Cold water JJ i 7 The recommended number of usage points are 100 amp 125 Litres 1 2 usage points 150 amp 200 Litres 3 4 usage points 250 amp 300 Litres 5 6 usage points 8 In case your solar water heater runs out of water due to non usage it is necessary to ensure the first filling of cold water is done in the early morning hours when the temperature within the tubes is low to avoid damage to the glass tubes 9 After the installation let the solar water heater heat the water for a minimum of 6 hours of good sunlight before using the hot water overhead Optimal Usage Tips Maintenance There our some recommendations and tips which if followed can go a long way to improve the over all efficiency of the solar water heater 1 Plan the consumption of hot water in quick intervals at one time either in the morning or evening to minimize heat loss in the pipeline 2 Run the hot water slowly this will avoid the mixing of hot and cold water in the solar water heater main tank 3 Do not withdraw more than the rated capacity of the system on a single day 4 Use electrical backup occasionally when more hot water is required 5 Set the thermostat of the electrical
15. sing your solar water heater a satisfying experience We would be happy to receive your valuable feedback in our efforts towards improving our products and services Wishing you a happy and sunny future Aurore Team Contents Chapter Solar Water Heater Parts Safety Guide Working Principle Performance Installation Tips Optimal Usage After Care Do s Don ts Trouble Shooting Technical Specifications 10 Accessories 11 Warranty Glass Tube Water Heater Evacuated Tube Collector ETC water inlet Drain Glass tubes 7 Vent bracket asi J 9 support Support structure For grouting Electrical e E U Horizontal stay channel heater ge ws Vent support Pd SI i A x 1 Right hand Cradle Right hand Upper tie channel Right hand Diagonal stay channel Right hand Main load channel Right hand Lower tie channel Right hand Diagonal load channel Safety Guide Vly Y NOTE Before installing the Solar Water Heater Place the evacuated glass tube collector out of reach of children and infants If there is a risk of hailstorms in your locality gt additional protection should be provided to iW Hunu WO lE he E E AX A oo Glass tubes by means of a HA M Din 7 If monkeys or other animals are a menace in your locality additional protection should be provided to the glass tubes with a mesh and vent pipe wh
16. valve on the cold water inlet open and ensure that the overhead water tank is filled with water Fill er 7 If the solar water heater tank has become empty due to non supply of cold water for long periods it should be refilled only during early morning hours when the temperature within the tubes is at a minimum 8 Clean the glass tubes regularly If dust and dirt are allowed to settle on the glass cover it will block the sun s rays and reduce the efficiency of the system It is advisable to clean the glass tubes every two weeks with fresh water or soft cloth Do not use coarse materials while clean ing the glass tubes UR T RUN NNI A VI A 9 Prevent any shade falling on the glass tubes Regularly trim back the branches of trees in the vicinity of the glass tubes to allow as much as possible sunlight to fall on them 10 Regularly check the vent to ensure it is not bent and is firmly supported using a vent support Get it fixed immediately if any damage is noticed in the vent pipe or the support structure Do not close bend or block the vent pipe lt is essen tial that the vent pipe be open to the atmosphere and that it is higher than the cold water storage tank otherwise it may badly damage the system Trouble shooting If after using this trouble shooting guide you still cannot solve the problem please contact our Authorized Service provider tien NN NN Water is not a Cold water inlet pipe from coming
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