background image

 

Vision Solar Systems 

100 L Gravity Fed Type 

 

1

 

Copyright © 2013 - 2016 Enervision. All Rights Reserved. 

Issue 2.0 Mar 2013 

 

 

 

 
 

 

 

 

 

Vision Solar Systems 
100 L Gravity Fed Type 

 
 

Installation, Operation  
And Maintenance Guide 

 

Summary of Contents for TZ58/1800-10

Page 1: ...ision Solar Systems 100 L Gravity Fed Type 1 Copyright 2013 2016 Enervision All Rights Reserved Issue 2 0 Mar 2013 Vision Solar Systems 100 L Gravity Fed Type Installation Operation And Maintenance Guide ...

Page 2: ...Position the system and any overflow pipes will guide any runoff water into a safe area If this is not possible then a gutter must be fitted to guide any overflow water into a safe point of discharge If animals particularly monkeys are a menace in the area then additional protection measures will need to be taken to prevent damage or malfunction of the system This protection should prevent access ...

Page 3: ... the Plumbers Registration Board PIRB AND who has completed the elective course on Solar Installations and who is familiar with the product The installation must comply with the National Building Regulations The National Water Regulations and the Local Water Plumbing Regulations in the area where the installation takes place Avoid axial or twisting force on the pipes Do not use a pipe wrench on th...

Page 4: ...Vision Solar Systems 100 L Gravity Fed Type Copyright 2013 2016 Enervision All Rights Reserved Issue 2 0 Mar 2013 4 ...

Page 5: ...your equipment and safety 2 Unpacking 6 Reporting Problems with This Guide 6 For Further Information and Technical Assistance 6 Principal of Operation 7 Performance 11 Specifications 13 Installation 14 Using a timer on the Electrical Heating 18 Cleaning 21 Routine Inspection and Maintenance 21 Trouble Shooting 23 Warranty Policy 24 ...

Page 6: ...58 x 2000 x 2 mm Vacuum Tubes 10 Cold Water Pipe Kit Hot Water Pipe Kit Overflow Pipe Kit Drain Valve 2 x 4 Weatherproof Electrical Box with Isolator Tempering Valve Tube Guard Expanded Metal cover for tubes Reporting Problems with This Guide Please use the fax or email addresses below to report any problems you find in this guide Enervision Technical Services FAX 27 11 395 4710 EMAIL info enervis...

Page 7: ... any pressure These solar water heating systems consist of four major parts as shown in the picture and detailed below The Thermal Storage Tank The thermal storage tank is a stainless steel tank constructed from 304 stainless steel material and being a low pressure tank we can use a technology we term no weld This involves all the pipe connections to the tank using a long life silicon grommet type...

Page 8: ...he Cistern or Reserve tank The cistern or reserve tank is a small tank which feeds the main thermal tank It contains a ball valve which ensures that that the reserve tank is always filled to a certain level If the level in the main tank drops through the cooling and reducing volume of the water the ball valve will open and top up the system The ball valve is the only moving part in the complete sy...

Page 9: ...he supply feed for the element With electricity conservation being the objective a timer with a reasonable reserve time it will continue to maintain time without the mains available and the ability to set up exclusion zones should be installed This will prevent the use of the electrical element during peak electricity usage period and also during the sun s normal heating time Considerations There ...

Page 10: ...ere are also some great features 1 The ball valve is the only moving part High quality brass and stainless steel valves are used to ensure durability and consistent operation 2 The system works naturally so it will not need any power to control or manage the hot water Even overheating and freezing of the main tank parts are inherently controlled 3 Inherently freeze resistant with the water in the ...

Page 11: ...ach day the energy used and the residual temperature each day to determine what the actual storage tank temperature will be and what the total available hot water from solar heating only will be Based on at least this hot water input being used every day in other words that tank is in equilibrium without boiling or running out of hot water the balance coming from electrical heating if this is requ...

Page 12: ...is needed to attain the required temperature Shown below is the graph of the time taken to heat water from 20ºC to 70ºC If the tank is at a higher temperature the time for 20ºC to the starting tank temperature can be subtracted from the full reheating time Note that you will need to take into account the timer exclusion zones if these are active in the electrical element reheat cycle or alternativ...

Page 13: ... Tank Material Optional Zinc coated 0 4mm Painted Steel Outer Tank Diameter 475mm Optimal Flow Rate 7ℓ min Fluid Type Water Tank Maximum Pressure 50kPA Collector Tubes Outer Tube Diameter 58mm Material Lead Free Glass Thickness 2mm Inner Tube Diameter 47mm Material Lead Free Glass Coating Multilayer SS C Cu Aperture Area 0 95m Absorber Area 1 76m Performance Estimated Life Span 10 years System Out...

Page 14: ...pm throughout all the seasons The tilt angle recommended for the collector is latitude plus 15 degrees Increasing the tilt angle will improve the winter performance while decreasing the tilt angle will increase summer performance The lower the latitude the more critical the tilt angle will be to the overall system performance Cloud cover will affect performance if cloud is predominantly in the mor...

Page 15: ... system to the structure can result in the frame flexing when subjected to high winds This can cause excessive stress on the frame tubes and tank and can result in the tubes fracturing Where extremely high winds are experienced additional care must be taken in securing the system and additional stainless steel guys may also be required to ensure that the system is securely mounted Mounting the Mai...

Page 16: ...to the reservoir tank Ensure that the shutoff valve is fitted to this pipe Connect the hot water pipe to the hot water output at the bottom of the tank Connect the overflow pipe to the reservoir tank as shown in the schematic Connect an additional overflow pipe to the side of the main tank as shown in the schematic For all these connections again take care to support the pipe connection to the tan...

Page 17: ...on It is recommended that the supply and outlet pipework is completed before the tubes are incerted This will allow for a slow trickle water into the main tank to fill the tubes as the tube is inserted fill with water Alternatively cover the tubes with an opaque cover such as canvas cloth or the cardboard box until the system is filled Adequate precautions must be taken to prevent the tubes from h...

Page 18: ... the programming dial corresponds to a period of 15 minutes When the toggle is in the right hand position the element is on and when the toggle is ion the left hand position then the element is off To set the timer for Eskom DSM switch all toggles over to the right Turn the dial and set the toggles from 7am to 3pm to the left position Repeat the above for the times from 6pm to 9pm Turn the dial so...

Page 19: ...e desired minutes Release the clock button when the time and day is set Setting the Time Zones Press P Display will show the Time Zone 1 On time Use the H to set the hour Use the M to set the minutes Use the D to set the day of the week Enervision recommends MTWTFSS as default cycles MTWTFSS MTWTFS MTWTF SS MTW TFS MWF TTS M T W T F S S Press the P again Display will show Time Zone 1 OFF time Pres...

Page 20: ... Check that the ball valve closes once the tank is full and that no water is discharged from the overflow Check all installed pipework to ensure that there are no leaks Open the drain and drain off 10 litres of water into a clean bucket Check for any gritty deposits and that the ball valve closes again Repeat if necessary Switch timer into the override mode and switch on the isolator Monitor the c...

Page 21: ... Reconnect and seal the electrical element and the drain valve Switch on the water supply Check for leaks on the tank and pipe work Grit in the tubes Not a procedure that is normally required Use the procedure above before reconnecting the water supply Remove each tube ensuring that the tube and seal are not damaged Jet water into the tube and allow the grit to exit Fill the system as detailed in ...

Page 22: ...de the tank can speed up the corrosion inside the tank Checking all vent and overflow pipes are not blocked Check for insects that may build nests in the vent or overflow pipes Clean and treat with an insecticide Check that there are no blockages in the vent or overflow pipes Clean out blockages and treat as required to prevent re occurrence Note Any blockage can result in the main tank being subj...

Page 23: ...ort period to wash out the tank Close the drain valve Note if the tubes are in the sun for a significant period without filling the system then follow the procedure s for filling given on page 20 Trouble Shooting No water Test a cold water tap to see that there is supply water Check that the system supply valve is on Check that there is water at the system supply valve Check to see that the main s...

Page 24: ... defective component and or workmanship The replacement of the entire system shall be in Enervision s discretion Enervision shall at its option not be obliged to honour its warranty obligations if it has not been properly notified of the installation and all material information relating to the installation provided to it including the receipt by the user of the operating manual a warranty claim i...

Page 25: ...he purposes of examination of the system in order to consider a warranty claim as well as to take whatever remedial action is necessary in terms of this warranty Installation and Maintenance The 100 litre solar water heater thermo siphon system requires minimum maintenance but the importance of proper installation and maintenance which will enhance its operational efficiency and longevity cannot b...

Page 26: ...Vision Solar Systems 100 L Gravity Fed Type Copyright 2013 2016 Enervision All Rights Reserved Issue 2 0 Mar 2013 26 ...

Page 27: ...t Number TZ58 1800 10 Product Serial Number Name of end user Installation address Contact Telephone number Email address Date of installation System Supplier Name Installer Name Installer Contact Number Installer s stamp Fill in Card cut out and fax to 011 395 3239 or post to Enervision Warranty Enervision Pty Ltd P O Box 14960 Farrarmere 1518 ...

Page 28: ...k Block E Cnr Atlas and Park Rds Boksburg PO Box 14960 Farrarmere Benoni 1518 South Africa Phone 27 0 11 395 3930 Fax 27 0 11 395 4710 Email info enervision co za Cape Town Unit F 19 Stellenberg Close Millenium Park Parow Industrial Cape Town PO Box 21280 Parow 7499 South Africa Phone 27 0 21 931 3575 Fax 27 0 21 931 3576 Email ashley enervision co za ...

Reviews: