SWH User Guide

8/8/2019 SWH User Guide

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Dear Friends,

Greetings from Aurore. Congratulations on acquiring an Aura solar waterheater. You have joined a growing family of conscious change-makerswho have started using renewable energy for their daily use. You aresaving precious electricity and contributing towards the reduction ofharmful carbon dioxide emitted in the production of electricity. Throughour network partners we will ensure that you are able to derive themaximum benefit from your solar water heater.

Here is some background on our organization. Aurore is located withinAuroville International Township near Puducherry. Our goal is to providehigh quality products and services in the area of renewable energy andenergy-efficiency. Our aim is to work towards building a society whichderives its energy from renewable sources of energy. Sun, a gift of MotherNature, makes inexhaustible energy available to us. Any efforts towardsharnessing energy from the Sun is a contribution towards conserving lifeon earth.

Our engineers and researchers are on the constant look-out for reliableand affordable solar energy solutions for domestic and commercial usage.Our aim is to provide high quality products at affordable prices. To ensurelong-lasting performance, we tie up with our network partners to providedependable service and after-care for your valuable asset.

We hope that you find using your solar water heater a satisfyingexperience. We would be happy to receive your valuable feedback in ourefforts towards improving our products and services.

Wishing you a happy and sunny future.

-Aurore Team-


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1. Solar Water Heater Parts 4

2. Safety Guide 5

3. Working Principle 8

4. Performance 9

5. Installation Tips 10

6. Optimal Usage 13

7. After Care Dos/Donts 15

8. Trouble Shooting 18

9. Technical Specifications 21

10. Accessories 22

11. Warranty 23

Contents

Chapter Page


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Tubebracket

Supportstructure

Drain

Coldwater inlet

Outertank

Inner tank

Vent

For grouting

Glass tubes

Electricalheater

Glass Tube Water Heater( Evacuated Tube Collector ETC )

Horizontal stay channel

Vent support

Right hand, Cradle

Right hand, Upper tie channel

Right hand, Diagonalstay channel

Right hand, Main load channel

Right hand, Lower tie channel

Right hand, Diagonal load channel

Ventsupport

NRV


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Do not touch or put cold water inside the glasstube if the tube has been exposed to sunwithout water.

Safety Guide

NOTE : Before installing the Solar Water Heater

If there is a risk of hailstorms in your locality,

additional protection should be provided tothe Evacuated Glass tubes by means of amesh.

Place the evacuated glass tube collector out of reach ofchildren and infants.

If monkeys or other animals are amenace in your locality, additionalprotection should be provided to the

glass tubes with a mesh and vent pipewhich is properly supported.


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The back-up electrical element should be installed by a trainedelectrician who should provide a proper earth connection andprotect the cable connections from water and moisture.

Kitec fitting

Do not use a pipe wrench for installationof pipe lines.

Test water before bathing, Hot water above 50 oC can causesevere burns

(CAUTION !

Households with small children, disabled, orelderly persons should use hot water only underadult supervision

Use back-up electrical element only when required. It isrecommended to switch OFF the electrical element before takinga bath.

NOTE : Before using the Solar Water Heater


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Do not drop hard objects on the glasstubes.

Blockage or damage to the vent pipe can

create severe damage to the solar waterheater. Should this occur, call theauthorized service provider immediately.In case of emergency, like breakage oftubes or leakage in tank, close the cold

water inlet and hot water outlet valvesimmediately and call our authorizedservice provider for rectification of

problem.

Close


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Working Principle of a Solar Water heater

A solar water heating system consists of a vacuum glass tube collector, an insulatedstorage tank and connecting stand parts (page 4). The evacuated glass tubes arefilled with water and exposed to sun, thus 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 glasstubes starts rising in the insulated water tank, and the cold water in the insulated watertank sinks into the glass tubes. As this cycle is repeated, water in the solar waterheater gets heated. This process is known as thermosiphon and is based on naturalconvection (Fig.3)

The storage tank is insulated so the water stays hot and can be used later in the dayor even the following day.

Cold waterinlet

Heat vent

Polyurethane(50mm)

Hot wateroutlet

Electricalheater

Hot wateroutlet pipeinside tank

Cold water

Cold water inletpipe inside tank

2

Earthing

Inside View of Tank

Drain or coldwater inlet

Valve +NRV

Hot water


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Performance

The output of a solar water heater system will depend on the amount of solar radiationavailable. 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 600C. On a good sunny day the watertemperature can rise very high and you may spot steam coming from the vent (this isperfectly normal).

Rainy days: These tubes perform very well in overcast conditions and in lowtemperatures. With evacuated glass tube technology, the reliability of the systemincreases, since the temperature inside the glass tube is independent of the surroundingtemperature.

However, there is a provision for electrical back-up, which can be used on overcastdays and on days when there is a need for additional hot water. (See Accessories,pg.23)

Sunligh

t

TubeMain tank

Cold water

Hot water

3 Thermosiphon


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Instal lat ion Tips

It is essential that a certified/trained plumber and electrical technician carryout this installation.

1. The location of the solar water heater should be south facing on an even surfacewith plenty of sunlight and free of shadows between at least 9 am and 4 pm.(Fig.4).

2. The solar water heater is designed to be used with a maximum head of 4 meters ofwater. It should be connected to an overhead water tank, the bottom of which shouldbe at least one meter above the top of the solar system and not more than 3 metershigh (Fig.5).

3. Wherever wind speed is high, the solar water heater should be grouted properly tothe 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 overheadwater tank.

5. Connect a valve to the hot water outlet port (Fig.5,6) to shut off the flow of hot waterfor maintenance, or in case of leakage or any other emergency.

6. The distance between usage points and the solar water heater should beminimised as much as possible; the maximum recommended distance with insu-lated hot water pipe line without substantial heat loss is 12 meters.

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2

1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2

South facing

Ground or roof hard surface

4

Grouting30

0


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6

Vent

Main tank Coldwater

Hot water Mixing valve

Electricheater

Earthing

Pipeline Installation with Pressure Pump

DrainNRV

Shower outlet

Cold water

Inlet inside tank

Hot wateroutlet inside

tank

Pressure pump

NRV

Overhead tank

Vent support

- - - - - - - - - - - - - - - - - - -

Cold waterHot water

Vent

Overhead tank

Main tank

Shower outlet

Mixing valve

5Vent

Earthing

NRV

< 2.75 mts

Pipeline Installation with Vent grouting

Cold

water

Grouted Vent support

Inlet/DrainValve


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Hot water outlet

Kitec

pipe

8

7. The recommended number of usage points are:

8. In case your solar water heater runs out of water due to non usage it is necessary toensure the first filling of cold water is done in the early morning hours when thetemperature 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 6hours of good sunlight before using the hot water.

Fromoverhead

tank

InsulationVent

Coldwaterinletvalve

Maintank

7

Support

100 & 125 Litres = 1 - 2 usage points150 & 200 Litres = 3 - 4 usage points250 & 300 Litres = 5 - 6 usage points


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7. Regularlyinspect the solar water heater tank to make sure its not damaged andthat no rainwater runs into the tank insulation. Also check for any rusting in the plumbinglines. Do necessary repairs using the authorized service provider.

8. To drain the water from solar water heater (for cleaning or repair) Disconnect thecold 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 heatermain 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 solarwater heater more frequently.

10. Do not to carry out any repairs or replacement of parts of the solar water heateron your own. Consult your authorized service provider for help.

11. Ask your authorized service provider for an Annual Maintenance Contractonce the warranty period is over. Check with him for an updated version of the owners

guide.


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Hotopen

Coldopen

Mixing

lever

Mixinglever

Hot

closed

Coldclosed

After use

After Care ( Dos & Donts )

2. Do not connect any otherequipment to the cold water inlet lineof the solar water heater.

3. Do not use a pipe-wrench. If the

system has to be disassembled andreassembled care should be taken notto use a pipe-wrench to connect the coldwater, hot water and vent pipes to thesolar water heater. If you do, it may

cause severe damage to the tank andresult in water leakage.

4. If mixing valves are used it isstrongly advised to close the hot waterand cold water tap after use and tokeep the mixing lever in the middleposition.

< 2.75 mts

- - - - - - - - - -

> 2.75 mts

1. This is a non-pressurized solar waterheater and it should not be

connected directly to apressure pump or morethan four metres of water

pressure. Check withAuthorized Serviceprovider for moreinformation.


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9. Prevent any shade falling on the glass tubes: Regularly trim back the branchesof trees in the vicinity of the glass tubes to allow as much as possible sunlight to fall onthem.

10. Regularly check the vent to ensure it is not bent and is firmly supportedusing a vent support. Get it fixed immediately if any damage is noticed in the ventpipe or the support structure. Do not close, bend or block the vent pipe. It 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.

Vent support


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Problem Cause Remedy

Water is notcoming fromthe tap.

Trouble shooting

If after using this trouble-shooting guide, you still cannot solve the problem, pleasecontact our Authorized Service provider.

a) Cold water inlet pipe fromoverhead tank or hot wateroutlet pipe from the solar waterheater is choked by sedimentor scales.

b) No cold water supply tosolar water heater fromoverhead tank.

c) Cold water inlet valve isshut.

d) Float valve in the make uptank has jammed or chocked.

e) Non-return valve stuck.

f)Air is trapped in the cold orhot water pipe line.

a) Clean the pipes & descalesediment.

b) Fill the overhead cold water tank.

c) Open the valve.

d) Clean the float-valve or replace it.

e) Remove & clean NRV spring.

f) Open the hot water outlet pipe nearthe valve and remove the air or drainthe water out of the tank and fill itagain.

a) The solar water heater is notreceiving enough sun light.

b)Excess water consumption

(Undersized).

c) Incorrect connection of coldwater and hot water pipes tosolar water heater storagetank.

d) Cloudy day, not enough sun

light.e) Cold water pressure due tomixing valve preventing the hotwater coming through.

a) Relocate in unshaded area.

b) Plan your water usage as per

installed capacity. In case of highconsumption use the electric back-up.

c) Shorten the hot water plumbing lineor increase the capacity of thesystem.

d) Use the electrical back-up.

e) Run hot water slowly at first andthen gradually open up the cold watertap for optimal mixing of hot and coldwater at the point of use.

Not getting hotwater.


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Water is boilingand steam isbeing releasedfrom vent.

a) System not in use for a longtime.

b) Failure of thermostat.

a) Wrong wiring connections.

b) Inappropriate thermostattemperature.

c) Lightning strike.

d) Short circuit.

e) Electrical heater thermostatfailure.

a) The solar water heater orplumbing line has a leak.

a) Reverse flow of cold waterin to the solar water heatertank (In case of mixing valve).

b) Inappropriate air vent

length.

c) Float Valve stuck in themake up tank.

a) If the system is not being used,cover the glass tubes with a shade orinstall a steam trap on the air vent.

b) Change the thermostat.

a) Connect according to the wiringdiagram.

b) Set the thermostat for acomfortable bath between 35 - 45degrees centigrade.

c) Inspect / replace fuse, heater

element and thermostat.d) Inspect / replace fuse, heaterelement and thermostat.

e) Replace with a new one.

a) Try to determine the source of theleakage. If it is not rainwater, fix the

leak. If the problem persists, call theauthorized service provider.

a) Close cold & hot water tap of themixing valve.

b) Increase the length of the air ventas per installation guide lines.

c) Clean or replace the float valve inthe make up tank

E l e c t r i c a lbackup notworking.

The solar waterheater is leak-

ing.

Water overflows from airvent or make uptank.

Problem Cause Remedy


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Mo

del

Aurore-1

00

Aurore-125

Aurore-150

Aurore-200

Aurore-250Aurore-300

Numberofusers

Storageta

nkvolume

Usagepoints

Numberoftubes

Tubediam

eter

Tubelength

Tubelayers

Tubecoatings

Outertube

thickness

Innertube

thickness

Joints&seals

Outertank

option

Innertank

Outertank

diameter

Innertank

diameter

Tankinsulation

Supportstructure

Max.system

pressure

Watertem

perature

Electricalbackup

Thermosta

t

Tubelife

Tubewarr

anty*

Fullsystem

warranty*

3to4

100litres

212

4to6

125litres

215

47mm

1800mm

3

Cu/SS/A1-N/A1

1.8mm

1.6mm

Non-weld

ingtechnologyusedforalljoints

AISI-304-2Bgradepaintedsteel--0.4

mm

thickness

AISI-30

4-2Bgrade-0.6mmth

ickness

475mm

375mm

50m

m

PUF(PolyurethaneF

oam)

Powder-coatedmildsteelwithinbuiltventsupport

0.4Bar

>940C

1.5Kw

300C

to700C

>15years

5years

1year

9to11

250litres

5-630

7to8

200litres

3-424

11to13

300litres

5-636

Technical Speci f i cat ions

6to7

150litres

318


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Accessories

Makeup Tank: The Domestic Solar water heater is designed to be used with a maximumpressure of 2.75 meters of water. If it is more than 2.75 meters of water column or if apressure 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 or3 KVA back-up electrical heater with a built-in thermostat. The heater can be used ondays 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.

>

>

width

133cms

>

>

>

> 200

cms

Model Width (cms)

Aurore - 100 106

Aurore - 125 135

Aurore - 200 193

Aurore - 250 235

Aurore - 300 300


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WARRANTY CARD

Upon installation of the solar water heater, the dealer responsible for the sale will fillout the warranty card and the customer will complete a record of it and retain it forfuture servicing.

This limited warranty covers the glass tubes, hot water tank and tank support frame fortube-breakage, leakage or any other malfunction caused by defects in the materialsand/or workmanship. It extends to the first buyer and to any subsequent owner(s) aslong as the water heater has been installed by trained and qualified authorizedtechnicians 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 duringtransport, handling or after installation. A gradual reduction in vacuum levels over timeis normal 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 1year from the date of purchase

This warranty also does not cover:

Cover leakage or breakage of tubes or other malfunctions caused by defectiveinstallation, misuse, operation and maintenance contrary to the written instructions inthe user manual.Odiferous, discoloured or rusty water coming from the system.

Damage to surrounding area or property caused by leakage or malfunction of thesystem.Costs associated with the replacement and/or repair of the unit, including freight,

shipping or delivery charges, removal, installation or re-installation charges; anymaterial, 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.


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Product Model No...............................................

Product Serial No...............................................

Name of Purchaser:

..........................................................................................................................................

Address:

..........................................................................................................................................................

......................................................................................................................................................................................

Phone No:....................................................................

Email ...............................................................

Date of Purchase .........................................................

Dealers Name:

.................................................................................................................................................

Dealers Stamp / Date:


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CSR Office, Auroshilpam, Aurovil le 605101, Tamil Nadu.Phone: 0413-2622749 / 168 / 277 Fax: 0413-2622057

email : aurore@aurovi l le.org. inhttp:/ /www.aurovi l le.com/aurore

Represented by :

Solar Water heaters

Documents

SWH User Guide