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Geyserwise Delta T, Instruction Manual, Page: 5 / 32

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Geyserwise Delta T Instruction Manual Download Page 5

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4

About the GeyserWise

Application

GeyserWise is suitable for installation 220V pumped solar hot water heaters.

When installing the GeyserWise be sure to follow the appropriate instructions of each particular manufacturer 
for all other components as well:

Installation of geyser.
Installation of solar collectors.
Installation of pumps.

Installation

Installation, maintenance and dismantling may only be performed by trained personnel in accordance with
this instruction manual and safety instructions.

Use the GeyserWise only after first thoroughly reading and understanding this instruction manual and the
safety instructions. In the event of any ambiguities regarding the installation and operation, consult trained
personnel or contact our offices.

Technical information

Operating voltage 230VAC / 50HZ.
Main relay contact rating 20AMP.
Secondary relays pump 5Amp.
Operating voltage range 160V - 250V AC.
Recommended ambient temperatures: -20 to 55°C; Max 65°C
Temperature display range 0 - 200°C (“-5” when below -5°C “EA” ).
Temperature setting ranges 30 - 65°C.
Heat failure - when increase at a rate of 4°C or less per hour.
Mechanical thermal cut-out 90°C (300 manual resets) - 

Please note this temperature for solar 

systems expected to reach temperatures higher than 90°C.

Thermal cut-out - Isolate live.
Dry heat detection - empty cylinder.
Temperature tolerance ± 5°C and manufacturing drift is less than 6°C.
Temperature differential setting 1°C.
Switching differential for the element 6°C.
2nd temperature probe for solar.
Solar differential 7°C (default) - standard system. Settable 7°C - 15°C.
Temperature probe failure detection for both collector and tank.
Temperature probe range for geyser is -30 to +130°C.
Temperature probe range for collector is -30 to +260°C
Isolate both L + N when element in an off state.
Collector anti-freeze protection at 5°C (default). Settable 0°C - 10°C. 

Please be sure to use the correct 

solar systems for frost prone areas. More details can be found on the ESKOM website:

http://www.eskomidm.co.za/residential/residential-technologies/step-by-step-guide-to-choosing-a-solar-
water-heating-system

     Control box insulated - Class 1.
Operating life - 50 000 cycles.

www.geyserwise.co.za

Instruction 

manual

About

3

About the GeyserWise

Summary of Contents for Delta T

Page 1: ...www geyserwise co za GeyserWiseDeltaT 220V Thermostatinstructionmanual Beforeoperatingandinstallation carefullyreadallinstructions Donotdiscardthismanual Allinonehotwatermanagement SANS181compliant ...

Page 2: ...ser Connect wire between controller and pump Replace lid on control box Display Adjusting day of the week Adjusting the real time clock Maximum temperature setting Setting solar differential default 7º C Setting the anti freeze temperature Setting geyser timers Eliminating a timer Holiday mode setting Manually overriding element timers Pump indicator Element indicator Hour counter Error codes summ...

Page 3: ...ntrary to any instructions provided by us or 4 permanently installed or attached and or combined with other goods or property in any way 5 We will not 1 repairthegoodwherethedefectordamagetothegoodisfoundtobeadirectresultofyournegligence recklessness or malicious behaviour and or 2 be liable for damage caused to the good as a result of wear and tear unless such damage manifests itself 1 within12mo...

Page 4: ...rmal cut out is in the first centimetre of the stem of the unit Display unit An array of useful information can be displayed This includes the temperature of the water in the geyser thetemperatureinthecollector whetherthepump is running or not when the element is on actual hours of electricity used etc Collector temperature sensor and extension cable Alsoreferredtoasaprobe itsensesthetemperature i...

Page 5: ... below 5 C EA Temperature setting ranges 30 65 C Heat failure when increase at a rate of 4 C or less per hour Mechanical thermal cut out 90 C 300 manual resets Please note this temperature for solar systems expected to reach temperatures higher than 90 C Thermal cut out Isolate live Dry heat detection empty cylinder Temperature tolerance 5 C and manufacturing drift is less than 6 C Temperature dif...

Page 6: ... devices which are connected to the GeyserWise conform to the technical specifications of the GeyserWise Exclusion of liability The manufacturer cannot monitor the compliance to this manual as well as the conditions and methods during installation and operation Improper installation of the system may result in damage to the property and as a result in bodily injury Therefore we assume no responsib...

Page 7: ...s follows 1 Apply all safety measures 2 Install the control box 3 Install the display unit 4 Remove existing thermostat and replace with new supplied thermostat 5 Install the collector probe 6 Complete all electrical connections 7 Set up the controller and all settings Instruction manual 220V pumped solar system 5 220V PUMPED SOLAR SYSTEM ...

Page 8: ...ils Test with a MULTIMETER to ensure that there is no current on the wires IMPORTANT Make sure that there is no reading on the multimeter 1 2 3 7 STEP 1 Apply all safety measures An installer should always take precautions when working with electricity The most important safety precautions to perform BEFORE doing any maintenance on a geyser are www geyserwise co za STEP 2 Install control box Find ...

Page 9: ...of the thermostat Pull the thermostat out of the pocket Please note that certain types of geysers require the user to remove the front part of the geyser temperature probe as provided 1 2 STEP 4 Remove thermostat and replace with supplied geyser temperature probe The geyser s thermostat needs to be removed The geyser temperature probe provided by GeyserWise has a built in probe that measures the t...

Page 10: ...yser temperature probe and connect the live wires once again on the connector terminal block Push the plug connected to the geyser temperature probe Plug it into the dedicated plug as provided on the control unit 3 4 5 Instruction manual 220V pumped solar system 8 Geyser Thermostat Connection Collector Probe Connection Display Connection ...

Page 11: ...ng lower temperature This implication is that the panel will be warmer than the indicated temperature and therefore stop the pump too soon The solar system will not be functioning optimally 10 STEP 5 Install the collector probe www geyserwise co za Please note the position of the probe when using a pump for anti freeze as the temperature at the top of the panel is higher than at the bottom Always ...

Page 12: ...on cable provided Plug the probe connection into the control box at the dedicated port On an evacuated tube collector a sleeve is normally provided on the return side to install the probe Connections on control box summary Instruction manual 220V pumped solar system 10 Geyser Thermostat Connection Collector Probe Connection Display Connection ...

Page 13: ...wise co za Connect Live and Neutral as indicated Ensure that the wires are properly fastened as they are drawing a large current Loose connections can damage the connector block Connect Earth wire as indicated 1 2 Connect the wire from isolator to controller Note Ensure that a wire is used that complies with the requirements of SANS 10142 Connect Live and Neutral as indicated Ensure that the wires...

Page 14: ...d Replace cover of geyser to protect the electrics 5 6 Replace lid on control box and fasten properly Before you replace the lid it is important to do a final check on the electrics by comparing it to the wiring as indicated on the lid Power up system 1 Switch on main supply at DB board 2 Then switch on power at isolator switch Summary Instruction manual Installation 5 6 Main power Main power Powe...

Page 15: ...that the wires are properly fastened both sides of the terminal block as they are drawing a large current Loose connections can damage the connector block 2 Connect Earth Green Yellow wire as indicated 3 Fasten all connections with the cord grip and screws as indicated to ensure that the wire cannot be moved Earth connection Pump connection Connect wire between controller and pump 1 Connect Live B...

Page 16: ...e Collector temperature press up and down arrows simultaneously once IncaseofPumpedsolarsystemonly ek Real time clock dicator Element on off indicator cator Timers 37 www geyserwise co za Display anism to the user and displays important information about the solar Geyser temperature Collector temp down arrows IncaseofPum Day of the week Real Anode depletion indicator Element Pump on off indicator ...

Page 17: ... day of the week flashes 1 Adjust the day of the week by using the and v arrow buttons 2 15 38 Adjusting the day of the week To adjust the day of the week follow the steps below www geyserwise co za Error messages Press the green set button until the day of the week flashes 1 Adjust the day of the week by using the and v arrow buttons 2 Instruction manual Display ...

Page 18: ...ent Press the green set button immediately after setting the hours to get to the minute counter Set the minutes according to your requirements by using the and v arrow keys 2 Maximum temperature settings There are four maximum temperature settings It is important to note that these settings apply to the four quarters of the day and not to the set times that the elements must come on Instruction ma...

Page 19: ...esis7 Cto15 C 2 Press the green set button until the temperature pump light and green timer on light flashes 1 Definition of solar differential Once the panel temperature is 7 C or your set temperature higher than the tank temperature the pump will switch on To adjust the solar differential follow the steps Press the green set button until the temperature and pump light flashes 1 Set the anti free...

Page 20: ...hours you require by using the and v buttons Immediately press the green set button again to get to the minutes and use the and v buttons to adjust the minutes 2 To set the number 1 off timer press the green set button until the timer indicators and Monday to Friday flashes The below picture shows that you are at the Monday to Friday setting for timer number 1 off 3 Adjust the hours you require by...

Page 21: ...t pumping through the system Thismaybecausedbyafaultypumporfaulty non return valve Instruction manual Display 19 42 www geyserwise co za Eliminating a timer It is possible to eliminate a timer setting To eliminate a setting follow the following steps Press the down arrow button until the timer setting reaches 00 00 Press the down arrow once more to eliminate until is displayed Holiday mode setting...

Page 22: ...witches back again For example Let s say the hour indicator indicates 30 hours You then multiply the number of hours with your geyser elementrating e g 4kW Thisthenmeans that the user consumed 120 kWh since the last time the unit was reset To reset the hour counter keep the up and down arrow buttons in simultaneously until the main time settings reappear Hour counter The number of hours that the e...

Page 23: ...page 48 Errorcode E9 Pumpfailure Possiblecauses Faulty pump Blockages in pump Electrical error on pump Action s Replace pump Check all electrical connections Clean pump More information on page 48 44 www geyserwise co za Possiblecause Faulty element or earth leakage more sensitive than normal household earth leakage Action s Element needs to be replaced contact our office or qualified person to re...

Page 24: ...set the unit by switching the geyser off at the DB board and then switching it back on after 3 seconds If the error persists follow the steps below Possible cause Earth leakage fault on the element Remedial action It s recommended that you contact an electrician or GeyserWise technician to deal with the E1 error code The following steps should be taken by the electrician or technician PLEASE DO NO...

Page 25: ...water 4 19 KJ Kg C Therefore Q can be calculated as 7 85kWh and a 3kW element will take 7 85 3 2 6h to bring the geyser s water up to 65 C In the above equation it takes a 3kW element 2 6 hours to heat 150 litre of water by 45 degrees On average 17 4 C per hour Based on this equation we went to look at the requirements in the ESKOM rebate programme regarding sizes of elements and tanks values give...

Page 26: ...yser element will not work during an E7 error code First try to reset the unit by switching the geyser off at the DB board and then switching it back on after 3 seconds If the error persists follow the steps below Possiblecause Poor contact or damaged cable Action s Check communications wire between control box and display unit E7 47 www geyserwise co za Please note that the geyser element will no...

Page 27: ... the temperature is as low as possible early in the morning preferably below 30 C Reduce the temperature to the minimum setting of 30 C from about October until the end of March This effectively means that the element does not switch on at all for six months of the year and all water heating is from solar On the GeyserWise controller use the following procedure to ensure the element seldom or neve...

Page 28: ...the power on again We do not recommend temperatures as high as 90 C but would like to offer a workable solution in case of higher temperatures At the moment all our MAX models come with the following thermostat Thermal cut out sold with GeyserWise MAX model Cut out temperature is at 90 C NB Please note cut out temperature Mechanical and electronic thermal cut out Mechanical thermal cut out at 90 C...

Page 29: ...itched on and an E8 warning code will be displayed The E8 warning code means that the collector is over 99 C If the temperature in the collector is between 99 C and 129 C GeyserWise will flash 99 and E8 alternatively When the temperature in the collector rises above 129 C the GeyserWise will flash and E8 alternatively The pump will continue circulating until the collector has cooled down If there ...

Page 30: ...he E4 will now be reset Press the power button to switch on the element If you gain no temperature in the geyser for 15 minutes investigate the possible causes as above and contact our offices for further assistance GeyserWise anti freeze function pumped solar only Please note that it is important that the correct solar system for frost prone areas is used ESKOM recommend an indirect solar system ...

Page 31: ...www geyserwise co za Instruction manual Notes 29 ...

Page 32: ...tNet PrivateBagX103 Suite239 N1City 7463 physicaladdress151CookStreet Goodwood 7460 WesternCape tel 086 104 3973 fax 086 664 3973 PRETORIA physical address Unit 5 Edison Park 183 Edison Crescent Hennops Park Centurion 0172 tel 012 653 1020 email info geyserwise co za web www geyserwise co za reg no 2004 083059 23 VAT no 4550224515 ...

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