geyserTECH GT Lite GT Smart LED Lighting User Manual
- June 16, 2024
- geyserTECH
Table of Contents
geyserTECH GT Lite GT Smart LED Lighting
Specifications
- Product Name : GT+ Lite | GT+ Smart
- Manufacturer : GeyserTECH+
- Compatibility : Residential geysers
- Installation : Requires solar PV panels
- Display : GT+ Display
Product Usage Instructions
System Overview
The GT+ unit is a device that optimally utilizes electricity generated
through standard solar photovoltaic (PV) panels to heat water in an existing
or new residential geyser without expensive modifications and installations.
The installation is simplified in that only solar PV panels have to be
installed together with the GT+ unit which is designed from high quality,
solid state technology with passive cooling. There are two GeyserTECH+
solutions namely the GT+ Lite and the GT+ Smart.
-
GT+ Lite System Diagram
Figure 1: GT+ Lite system diagram -
GT+ Smart System Diagram
Figure 2: GT+ Smart system diagram -
GT+ Smart Interface: GT+ Display
Main Screen
The main screen has 5 different layouts namely: Kids, Geyser, Logger,
Geyser-Logger, and Expert.
Basic Display Mode: Kids and Logger
In this very basic mode of operation, the geyser temperature is shown
almost full screen with minor statistical information. There are two basic
modes: Kids mode and the Logger mode. A screen shot of each mode is displayed
in Figure 3 and 4 respectively.
Figure 3 : Main screen – Kids mode
Figure 4 : Main screen – Logger mode
| Section | Description |
|---|---|
| 1 | Current date and time. This time is synchronized with the |
server when WiFi is available and normally does not have to be set.
Important: When WiFi is not available, it is important to set the
time manually since each data reading is time stamped.
System Settings
-
Geyser Settings
The Geyser settings section allows you to customize various parameters related to the geyser. -
Override Menu
The Override menu allows you to manually override the default settings for the geyser. -
Temperature Settings
The Temperature settings menu allows you to set the desired temperature for the geyser. -
Timers
The Timers menu allows you to set timers for specific operations related to the geyser. -
History
The History menu displays the historical data of the geyser’s temperature and usage. -
Graph
The Graph menu displays a graphical representation of the geyser’s temperature and usage over time. -
Test
The Test menu allows you to perform tests on the geyser and check its functionality. -
PV Panels
The PV Panels menu allows you to monitor and manage the solar PV panels connected to the GT+ unit. -
Clear Status
The Clear Status menu allows you to clear any error or status messages displayed on the GT+ Display. -
System Settings
The System settings section allows you to customize various parameters related to the GT+ system. -
WiFi
The WiFi menu allows you to connect the GT+ system to a WiFi network for remote monitoring and control. -
Logger
The Logger menu allows you to configure the data logging settings of the GT+ system. -
Display
The Display menu allows you to customize the display settings of the GT+ Display. -
About
The About menu provides information about the GT+ system, including its version and serial number. -
USB
The USB menu allows you to connect external devices to the GT+ system via USB. -
Set Time
The Set Time menu allows you to manually set the date and time of the GT+ system. -
Main Screen
The Main Screen menu allows you to customize the layout and information displayed on the GT+ Display’s main screen. -
Inverter Settings
The Inverter settings section allows you to configure parameters related to the inverter connected to the GT+ system. -
Switch On
The Switch On menu allows you to turn on/off the inverter connected to the GT+ system. -
Solar Setting
The Solar Setting menu allows you to configure parameters related to the solar power generation and usage. -
Battery
The Battery menu allows you to monitor and manage the battery connected to the GT+ system.
Quick Links
-
How to Register a GT+ System
Instructions on how to register a GT+ system on the mobile application. -
How to View the System ID’s
Instructions on how to view the system ID’s of the GT+ system. -
How to Setup a WiFi Network
Instructions on how to set up a WiFi network for the GT+ system. -
How to Instantly Heat Your Geyser
Instructions on how to instantly heat your geyser using the GT+ system. -
How to Set the Timers
Instructions on how to set timers for specific operations related to the geyser using the GT+ system.
Tips and Tricks
-
How to Choose the Best Timer Settings
Tips on how to choose the best timer settings for optimal geyser operation. -
What is a Good Maximum Solar and Grid Temperature
Tips on what is considered a good maximum solar and grid temperature for efficient operation.
FAQ’s
-
Will my geyser overheat if I am on vacation?
No, the GT+ system is designed to optimize electricity usage and prevent overheating of the geyser, even when you are on vacation. The temperature settings and timers can be adjusted to ensure safe operation. -
What maintenance is necessary?
The GT+ system requires minimal maintenance. Regularly check for any error or status messages displayed on the GT+ Display and follow the instructions provided. It is also recommended to clean the solar PV panels periodically to ensure optimal performance.
Help Resources
Quick Links
-
My geyser does not have any hot water.
If your geyser does not have any hot water, refer to the quick link for troubleshooting steps and solutions. -
My Display doesn’t work.
If your GT+ Display is not working, refer to the quick link for troubleshooting steps and solutions. -
Customer Support
For further assistance and support, please contact our customer support team.
USER MANUAL
GT+ Lite | GT+ Smart
This document is to be used by the owners of a GeyserTECH+ (GT+) system. This manual contains information on how to interface with the GT+ unit using the Display and the mobile application. Steps on how to register the system on the mobile application are also included in this manual. This document does not contain instructions on how to install the GT+. Please refer to the User Manual as well as the Technical Data Specification sheet which can be downloaded from www.geysertech.co.za.
System Overview
The GT+ unit is a device that optimally utilizes electricity generated through
standard solar photovoltaic (PV) panels to heat water in an existing or new
residential geyser without expensive modifications and installations. The
installation is simplified in that only solar PV panels have to be installed
together with the GT+ unit which is designed from high quality, solid state
technology with passive cooling.
There are two GeyserTECH+ solutions namely the GT+ Lite and the GT+ Smart.
GT+ LITE
The GT+ Lite is a simpler and more economic solution. It works in conjunction
with a timer. The timer allows the geyser to only use grid power at preset
times specified by the user. The PV power is not restricted by the timer and
is used to heat the geyser whenever the PV power is available. When the PV
power is sufficient to heat up the geyser, no grid power is required. On
overcast or rainy days when almost no PV power is available, the geyser is
heated by the grid however, only during the time slot set on the timer
therefore reducing grid power consumption. The GT+ Lite system diagram is
displayed in figure 1.
GT+ SMART
The GT+ Smart allows full automation of your geyser. The Smart comes with the
GT+ Digital Display, which performs the task of the timer in the GT+ Lite
solution. The GT+ Smart allows the user to interface the system either through
the GT+ Digital Display, the GT+ mobile app or the GeyserTECH+ website.
With the GT+ Smart, the user can view daily savings, obtain the real-time
temperature of the geyser, adjust timer settings remotely, instantly heat the
geyser and more. The GT+ Smart system diagram is displayed in figure 2 below.
GT+ Smart Interface: GT+ Display
Main screen
The main screen has 5 different layouts namely
- Kids
- Geyser
- Logger
- Geyser-Logger
- Expert
Basic Display mode: Kids and Logger
In this very basic mode of operation, the geyser temperature is shown almost
full screen with minor statistical information.
There are two basic modes: Kids mode and the Logger mode. A screen shot of
each mode is displayed in Figure 3 and 4 respectively.
-
Current date and time
This time is synchronized with the server when WiFi is available and normally does not have to be set.
Important: When WiFi is not available, it is important to set the time manually since each data reading is time stamped. -
Solar Power Information
The following solar information is displayed next to the solar icon- Available‘ / ‘Down’: indicates solar power availability.
- kW : The tempo of power currently being harvested.
- kWh : Total power that has been harvested for the day.
-
Grid Power Information
The following grid power information is displayed next to the grid icon- ‘Available‘ / ‘Down’: indicates grid power availability.
- Time : : Total time that grid power has been used for the day.
- kWh : Total grid power that has been used for the day.
-
Temperature
The text color of the temperature indicates which power is being used. The following colours represent from which power source the geyser is being heated- Red – Grid power
- Green – Solar power
- Black – No power
-
Geyser settings (see section 2.2)
-
Inverter settings (see section 2.3)
-
System settings (see section 2.4)
Advanced display mode: Geyser, Geyser-Logger and Expert
The advanced views allow the user to view more statistical information. Geyser
and Geyser loggers show partial statistical information where the Expert mode
shows all statistical information.
A Screenshot of each of the modes are displayed in Figure 5, 6 and 7
respectively. Each section of the different display modes is explained in the
table below according to the number assigned in the figures.
-
Current date and time
This time is synchronized with the server when WiFi is available and normally does not have to be set.
Important: When WiFi is not available, it is important to set the time manually since each data reading is time stamped. -
Geyser temperature
The text colour of the temperature indicates which power is being used. The following colours represent from which power source the geyser is being heated- Red – Grid power
- Green – Solar power
- Black – No power
-
Grid and solar power information
The solar and grid power is interspersed differently on each display. The following table includes abbreviations of all possible measurements and readings:
-
Geyser settings (see section 2.2)
-
Inverter settings (see section 2.3)
-
System settings (see section 2.4)
Geyser settings
Figure 8: Geyser settings display
Override menu
The override menu lets the user choose how long grid power will be used as a
once-off override.
The top slider sets maximum time that will be allowed for the override. The bottom slider sets the maximum required temperature (Figure 9). Grid will be used until set temperature is reached or time runs out, whichever is reached first
Temperature settings
It is possible to set independent maximum temperatures for when using solar
power and for when using grid power. Independent temperatures enable more
efficient saving profiles for the end user. The top slider sets solar
temperature, while the bottom slider sets grid temperature (Figure 10).
Timers
The GT+ has two independent timers that determine when grid power may be used.
The goal is to set timers to effectively work around the user’s schedule. The
top two sliders set the first timer’s start and stop times, while the bottom
two sliders set the second timer’s start and stop times (Figure 11 above).
History
The history page shows the daily statistics for the GT+ Smart unit.
Graph
The graph page shows visual representation of the last 36 hour geyser data.
Solar power is scaled according to installed PV capacity.
Test
Mainly for installer use, this page can force the GT+ Smart to switch either
- Off – no power passed through to the geyser
- Solar – solar power passed through to the geyser
- Grid – grid power passed through to the geyser
When the GT+ Smart is forced to use a specific source, then measuring equipment can be used to see if the GT+ Smart is functioning properly.
PV Panels
The top slider shows installed PV capacity measured in Watts. This value is
used to optimize calculations within the GT+ Display and to display the Graphs
on the correct scale (section 2.2.5 ).
The middle slider sets the Vmp of your panel bank. The Vmp can be set from 50
to 250, below 50 sets the MPPT algorithm to auto detect. If you do not know
your Vmp voltage, then Auto detect is a safe option here.
The bottom slider sets the geyser element size. This is used to calculate how
many kWh is used when functioning from grid power. Geysers smaller than 150
litres typically have a 2kW element; 150 litre geysers typically have a 3kW
element and geysers larger than 150 litres typically have a 4kW element, as a
standard. If you do not know your element or geyser size, 3kW is a safe
choice.
Clear status
This is mainly for installers. After the tests have been completed, clear
status will zero the statistics for the day and move all data one day back
into the history
(see section 2.2.4).
System settings
WiFi
-
WiFi On indicates that the WiFi module will function in the background uploading data on its schedule. All data sent to the server is compressed and the GT+ Display uses very little data, less than 32kb/day (or less than 1 mb/month).
-
WiFi Off indicates that the WiFi is disabled by the user. If the WiFi is disabled, then it will not connect automatically and will not use up the user’s internet data.
-
WiFi Scan will initialize the WiFi and try to connect with the saved Access Point and password. It will also show the modem’s MAC address if the user’s Access Point has a MAC filter set up for safety reasons. After a complete scan of the WiFi signals, the strongest Access Points will be shown. The user can pick an Access Point and enter a password. If the GT+ Display can connect successfully to the Access Point, it will then contact the central server to retrieve time automatically. Default time zone is SAST (South Africa Standard Time) or UTC+2, with no DST
(Daylight savings time). If your Access Point does not show in the list, check that the Access Point is set up for 2.4GHz operation, 5GHz is not compatible with the WiFi modem. -
WiFi Test will initialize the WiFi module, attempt to connect to the stored Access Point and try to retrieve local time from the server. If this fails, check your router’s connection or mobile data balance.
Logger
The GT+ Display has a built in micro logger. Data is averaged and stored every
5 minutes. The only thing that the user can set is for the pulse counters
(i.e. Power meter and Water meter). The left button shows the current
calculated value on the meter itself. Therefore, if your meter did not start
at a ZERO value when you installed the GT+ Display, you can enter the current
value displayed on the meter itself. The right button shows how many pulses
your meter outputs per unit of measure.
Example 1 : If you have a Elster A200 power meter which outputs 1600
pulses per kWh, then you set the value to 1600. After this value is entered
you will notice that the Display value (left value) will increase alongside
the actual meter’s display value. The Display value will increase 1/1600 or
0.000625 for every pulse received.
Example 2: If you have a water meter that outputs one pule for every 10.0
liter, then you will want to set the constant (right button) to 0.1
pulse/Liter. The display value will increase 10.0 for every pulse.
Display
The user can set the active and passive back-light setting. The active setting
is when the user is interacting with the display. The passive light activates
after no touch is detected for longer than 30 seconds. A low passive back-
light decreases power usage and increases battery life in off-grid
installations.
The top slider sets active back-light power, while the bottom slider sets passive back-light power. While holding down the slider, the back-light will instantly reflect the chosen power level. This is handy for changing the passive power level.
About
The about screen only shows information on the devices and connected plug-ins.
- ID – GT+ Display serial number linking your data to your profile on the server Hardware – The GT+ Display hardware version
- Software – The GT+ Display software version
- Memory – FLASH memory storage space
- Battery – Battery voltage level
- Charger – Can have one of four operating statuses
1. **Fault** : no input power
2. **Full** : battery full
3. **Active** : charging
4. **Suspended** : charging time-out reached or temperature error- Ambient – GT+ Display on-board temperature sensor (Humidity optional)
- Robot – GT+ Smart Serial number and software version (if connected)
- Inverter – GT+ Inverter Serial number and software version (if connected)
USB
The USB port can take almost any mass storage class FLASH drive with a FAT
file system. When you enter this menu, the software tries to probe and open
the FLASH drive. If the driver and the file system is compatible, the drive is
opened and the following menus will be available
- CSV Expor t: converts and saves all data in the on-board memory to a Libre Office, OpenOffice and MS Excel compatible file.
- Update : checks for a firmware file and updates on-board code, this will cause a reboot. Read
- Logo : checks for a Logo file and copies the file to on-board memory.
- Exit : safely removes the drive and can now be unplugged
Set Time
If no WiFi is available, the data will log with invalid timestamps. Therefore,
a date and time can be updated manually. Time is entered in the format
- YYYY/MM/DD hh :mm
- YYYY – Year
- MM – Month of the year, 1 = January
- DD – Day of month
- hh – Hour of day
- mm – Minutes
Seconds will always default to zero when entering time.
Main Screen
The main screen can be changed to the 5 different modes. Two of the modes are
basic modes showing very limited data (section 2.1.1) and the other three are
advanced display modes showing partial or all statistical information (section
2.1.2). Click on the respective button to change main screen layout.
Inverter settings
Switch on
This allows the user to either switch the inverter on or off.
Solar setting
The Solar setting screens allows the user to change the maximum power point
voltage (Vmp). The Vmp can be set from 50 V to 250 V, below 50 V sets the MPPT
algorithm to auto detect.
Battery
The battery settings are often only used by the installers. Do not change
these setting unless a thorough understanding of setting implications is
gained. Screen contains the following settings: ?
- Low cutout voltage
- Low recover voltage
- Soft fuse current
- Absorb voltage
- Floating current
Quick links
- How to register a GT+ system
To register a system a User Profile must be created. A User Profile can be created using the Telemetric App (www.telemetric.co.za) which can be found using either your phone or a computer.
To register, follow the steps below
STEP 1 : Go to www.telemetric.co.za with either your phone or a computer.
STEP 2 : On the homepage (Figure 18 A) scroll down to “Signup” (Figure 18 B). STEP 3: Complete the required information (Figure 18 B) and click ‘Login’.
Note : On the GT+ Display, under ‘System’, ‘About’, you will find the Display ID and the Robot ID which you will need when signing up (see section 3.2).
STEP 4 : After you have logged in, you will see the main screen (Figure 18 C).
-
How to view the System ID’s
In order to register your system on the mobile app you have to enter the system ID’s. To view the system ID the steps below can be followed:
STEP 1 : On the GT+ Display unit’s main screen, click on the ‘System’ button in the right bottom corner
STEP 2 : Click on the ‘About’ button of the systems screen.
STEP 3 : On the ‘About’ screen you will see the ID’s of the GT+ Display, the GT+ unit and the the inverter (if connected). -
How to setup a WiFi network
Steps on how to setup the WiFi on the GT+ Display unit:
STEP 1 : On the GT+ Display unit, click on the ‘System’ button in the right bottom corner on the main screen.
STEP 2 : Click on the ‘WiFi’ button.
STEP 3 : Click on the ‘WiFi Scan’ button.
STEP 4 : Select your WiFi router name
STEP 5: Enter WiFi Password
Your GT+ Display should now be connected to the WiFi, allowing the unit to connect to the GeyserTECH+ servers. Information is updated every 10 minutes which can be viewed on the mobile app. -
How to instantly heat your geyser
First check that your override settings are correctly set.
STEP 1 : Click on the ‘System’ button on the Main screen
STEP 2 : Click on the ‘Override’ button
STEP 3 : Change settings accordingly. Top slider sets your desired temperature and bottom slider sets how long the geyser should be heated. The geyser will stop heating once either limit is reached.
Thereafter, activate the override function
STEP 1: Go to main screen
STEP 2 : Hold the ‘Geyser’ button down until a pop-up message notifies you that the override function is activated. -
How to set the timers
STEP 1 : On the Main screen click on the ‘Geyser’ button in the left bottom corner. STEP 2: Click on the ‘Timers’ button
STEP 3 : Set the start and end time for the first timer
First slider : Timer 1 start time
Second slide r: Timer 1 stop slider
STEP 4 : Set the start and end time for the second timer, bottom two sliders
Third slider : Timer 2 start time
Fourth slider : Timer 1 stop slider
Tips and tricks
How to choose the best timer settings.
Geysers heat up at roughly 15-20 °C per hour, depending on size and
stratification. It is recommend to set the timer for about an hour before
normal water use. For example, if hot water is required by 18h00, set the
timer to start at 17h00 and stop at 18h00, right up until you start using the
hot water.
What is a good maximum solar and grid temperature
For optimal savings, keep the grid power as low as possible and the solar
power as high as possible. Setting the temperature to a maximum while using
solar power can boost savings. This is because heating the geyser to a high
temperature, can potentially eliminate the use of the grid power. For example,
let’s say the solar power heated the geyser throughout the day to 70°C and
your timer is set to heat the geyser at 18h00 because you need hot water
around 19h00. If your geyser hasn’t cooled below your maximum grid power
temperature, there would be no need to use grid power.
To find the lowest acceptable temperature, start off with setting your grid
temperature to 50 °C. After using the hot water, decide whether or not the
water temperature can be reduced.
FAQs
Will my geyser over heat if I am on vacation?
No, the GT+ switches off when the set geyser temperature is reached. This also
reduces water spillage in a country where water is becoming scarce.
What maintenance is necessary?
The GT+ works together with a standard geyser, therefore anything that will
affect a standard geyser applies here.
Help resources
Quick links
My geyser does not have any hot water
If your geyser does not have any hot water check the following
- Check that the circuit breaker for the geyser is switched on at the DB.
- Check that your timer is set to have sufficient time to heat the geyser.
- Check if the maximum temperature when using grid power is set high enough.
My display does not work
If your display doesn’t work check the following
- Check that the circuit breaker for the geyser is switched on at the DB.
- Check if the terminal block is connected properly behind the display.
- Check if each cable is connected tightly to the terminal block.
Customer support
If you still have problems with the system or have any queries, please send an
email to info@geysertech.co.za or call our
office number 021 203 5557.
For any additional information, visit
www.geysertech.co.za.
Contact us
- 021 203 5557
- 066 436 7304
- www.geysertech.co.za
- info@geysertech.co.za
References
Read User Manual Online (PDF format)
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