istore 270L Manual

iStore Basics

The iStore utilises an ingenious technology to efficiently transfer thermal energy directly from the surrounding air and into water, without dependence of the sun or fossil fuels to provide an energy source.

Characteristics
Smart and efficient unit
The operational costs can be up to 75% less than that of an electric water heater, and can be installed in locations which are unsuitable for solar hot water heating.

Safe and environmentally friendly
Produces no harmful gases along with no open flame, making the unit safe to work with when installing.

Easy to operate
Featuring an easy to use timer for both start and stop operations.

How Does The iStore Work?

1. A fan draws in air, containing heat energy, across the evaporator.
2. The evaporator turns the liquid refrigerant into a gas.
3. The compressor pressurises the refrigerant into a hot gas.
4. The hot gas inside the condenser coil heats the water inside the coil-wrapped tank.
5. The refrigerant reverts back to a liquid after heating the water and continues to the evaporator for the process to start again.
6. The cycle continues until the set target temperature is achieved.

As water is used in the home, the cycle will restart once the temperature in the lower section of the tank has dropped 12 degrees below the target temperature.

HOT WATER CAN CAUSE SERIOUS INJURY

Hot water is dangerous! As a safety precaution, young children should always be supervised around hot water fixtures
THIS WATER HEATER IS ONLY INTENDED TO BE OPERATED BY PERSONS WHO HAVE THE EXPERIENCE OR THE KNOWLEDGE AND THE CAPABILITIES TO DO SO. THIS WATER HEATER IS NOT INTENDED TO BE OPERATED BY PERSONS WITH REDUCED PHYSICAL, SENSORY OR MENTAL CAPABILITIES I.E. THE INFIRM AND CHILDREN.
As solar water heaters can generate water temperature in excess of 50o C, regulations require that an approved solar rated tempering valve shall be installed in accordance with the valve manufacturer's instructions. This is required to prevent water temperatures supplied to the house exceeding a preset safe maximum. The tempering valve is connected to the hot water outlet lines. The valve must be fitted by an authorised plumber at the time of installation or in retrofitting to existing systems.
CHECK THE WATER TEMPERATURE BEFORE USE, SUCH AS WHEN ENTERING A SHOWER OR FILLING A BATH OR BASIN, TO ENSURE IT SUITABLE FOR THE APPLICATION AND WILL NOT CAUSE SCALD INJURY.
Hot water systems can store water at temperatures that can cause scalding. Water temperatures over 50oC can scald and care needs to be taken to ensure that injuries do not occur through incorrect use of your water heater.
If the water heater is left unused for two weeks or more, a small quantity of hydrogen gas (which is HIGHLY flammable) may accumulate in the top water cylinder. To dissipate this gas safely it is recommended that a sink or bath hot tap be turned on to dispel a couple of litres of water. During this procedure there should be no smoking, open flames or any electrical appliances such as washing machines or dish washers operating nearby. If Hydrogen is discharged through the tap, it will make a sound like air escaping.

GENERAL SAFETY INSTRUCTIONS
The installation of the iStore solar hot water systems requires the expertise of a licensed professional. The installation process must adhere to the guidelines set forth in the National Plumbing code (AS/NZS 3500.4), Australian Electrical Wiring Rules (AS/NZS 3000), as well as all applicable local plumbing and electrical regulations.
The electrically operated components of this water heater operate on 240v AC power.
The removal or attempted alteration of any electrical component must be conducted by a qualified electrical service person.
Care should be taken to avoid coming into contact with any pipe work or fixtures associated with the water heater.
For continued safety of this appliance, it must be installed, operated and maintained in accordance with the manufacturers instructions.
This appliance uses R290 (Propane) refrigerant, a flammable gas class 3 according to AS1677.

Risk of fire/flammable material. If the refrigerant is leaking together with an external ignition source there is a possibility of ignition.
Compliance with AS/NZS 5601 must be observed during storage.
If a refrigerant leak is detected, switch the unit off at the mains and contact your iStore service agent.
End of life recycling: The refrigerant must not enter the atmosphere and can only be removed by a qualified technician.

General Operation

• To prevent unwanted changes to your iStore settings. The Smart Screen will automatically lock after 3 minutes of inactivity.
• The iStore has an inbuilt controller which monitors the temperature in the tank, when the preset lower thermostat temperature range is reached the iStore will commence heating and continue until the target temperature is reached.
• The iStore will keep its settings and timers during a power outage but note extended power loss may have caused the iStore to miss its normal schedule start or stop times, the schedule will continue as normal the following day or can be forced ON/OFF via the LCD.
• If the power to the unit is interrupted the unit will not start to run again for approx. 3 minutes as a protection feature to safeguard the compressor.
• The fan and compressor will operate continually during the heat cycle only.
• The LCD will display OFF if you visit the iStore outside of its timer(s).
• During normal operation, condensation occurs from the transfer of air across across the evaporator coil. This process is drawing humidity from the air and creates condensation/water droplets on the coils, which in turn is discharged through the condensate drain line.
• To manage tank pressures discharge from the Pressure and Temperature Relief valve (PTR) and Expansion Control Valve (ECV) may occur during the heat cycle.

Heating Cycle
The Federal Government mandates a thermostat range of 12 degrees for the iStore, this is measured in the lower region of the tank displayed in the top left corner of the LCD.
As water is used in the home, the cycle will restart once the temperature in the lower section of the tank has dropped 12 degrees below the target temperature.
Note - The fan will operate only while the heat cycle is operating.

Find the LCD function video tutorials on our website.
https://heatpumps.istore.net.au/lcd-setup-tutorials/

The function diagram of the LED display

Function of keys

NO.	Button	Name	Function
1		ON/OFF	Turn on/off the unit.
2		Mode	Switch unit running modes or save setting parameters.
3		Clock	Set the clock or the timer.
4		Electric Booster	Turn on/off the electric booster.
5		Up	Move up or increase parameter values.
6		Down	Move down or decrease parameter values.

Find the LCD function video tutorials on our website.
https://heatpumps.istore.net.au/lcd-setup-tutorials/

Status icon	Name	What it means
	Eco Mode	Shows that the unit is in eco heating mode.
	Vacation	Shows that the unit is in vacation mode.
	Fan	Shows that the fan is on and the speed of the fan.
	Electric Booster	Shows that the electric booster is on.
	Set temp. achieved	Shows that the water temperature has reached the target point and the unit shut off automatically.
	Parameter setting	Shows that the parameter is adjustable.
	Temperature	Shows that the temperature is non-adjustable (measured value).
	Timer & ON	Shows that the unit will be turned on by the timer automatically.
	Timer & OFF	Shows that the unit will be turned off by the timer automatically.
	Minute	Shows that the main display area displays the minute.
	Centigrade	Shows that the temperature in Main display area or Auxiliary display area is in C
	Lock	Shows that the keyboard is locked.

The general operation of the iStore is that when the bottom of the tank temperature, the top left number, falls more than 11 degrees below the target temperature, the iStore will commence heating and heat the full tank to the target temperature.
Once achieved. the shower symbol will appear on the left side of the LCD.
The large centre number is the temperature towards the top of the tank, please remember that hot water rises and is drawn from the top of the tank to be delivered to the house for use.
Note - If the padlock symbol is displayed that the screen will display all values but cannot be changed.
The power button in the bottom left of the LCD can operate in 3 ways.

• A 6 second hold will lock or unlock the lcd screen
• A 2 second press and release will turn the iStore On or Off
• A short tap will exit whichever function you are changing

The mode button only responds to a short tap.
The clock button can operate in 3 ways,

• A short tap tells the iStore that you wish to change the system clock
• A 2 second hold enters the timer setting mode
• By holding the button continually the LCD will rotate thru each of the timer settings. It will progress through On 1 time, the Off 1 time, followed by the On 2 time, and Off 2 time, until you let go of the button.

The booster button is turned On or Off by a short tap on the button.
The up and down arrows are used to adjust the clock, the timer and vacation mode.

The LCD Lock/Unlock function

If the iStore display does not detect activity for 60 seconds the screen will enter sleep mode which requires a simple palm press AND RELEASE on the LCD to reactivate it.
After a further 2 minutes of inactivity the screen will lock to prevent unwanted changes.

To unlock the screen simply press and hold the power button for 6 seconds.

Turn ON/OFF the unit
Press and hold for 0.5s and the LED display will turn on the unit and at this time the main display area shows the water outlet temperature.
Press and hold for 0.5s in the running interface and the LED display will turn off the unit and at this time the main display area shows OFF.

Mode selection
The Federal Government Clean Energy Regulator specifies how the iStore compressor hot water systems must operate in Australia and as such how the computer control operates.

Economic Heating Mode
For Australian conditions ECO mode monitors the surrounding temperature, incoming water and outgoing water, heat transfer capabilities and adjusts its operation to suit.

Vacation Mode
For use when away on holidays, enter the date of your return and the smart iStore will reduce usage to the government mandated weekly disinfect cycle only. Vacation mode reduces energy consumption while you are away.

Electric Element Booster Mode
The electric element will heat the water to the pre-set temperature and turn off once this is reached. The electric element booster mode is classified as a one-shot boost and will automatically turn off once the target temperature is reached.

Press to select Eco Mode or Vacation mode.

Setting the Time & Date
Example: Change the time and date from 18:30 on August 4th to 17:40 on September 8th.

Tap the clock button and the whole digital clock will flash

Tap the clock button again and the hours will flash

Tap the up or down arrows to adjust the hour

Tap the clock button again and the minutes will flash

Tap the up or down arrows to adjust the minutes

Tap the clock button again and the whole month and day will flash

Tap the clock button again and the month will flash

Tap the up or down arrows to adjust the month

Tap the clock button again and the day will flash

Tap the up or down arrows to adjust the day

Tap the clock button again and the whole year will flash

Tap the clock button again and the year will flash

Tap the up or down arrows to adjust the year

Tap the clock button to complete the timer setting

Find the LCD function video tutorials on our website.
https://heatpumps.istore.net.au/lcd-setup-tutorials/

Timer Setting (Eco Mode)
NOTE: A timer is not mandatory for the iStore operation. Factors such as household demand, time of use, individual supplier peak and offpeak electricity rates, solar panel Feed In Tarrif rates all may influence what heating schedule best suits a household

Press and hold the clock button for 2 seconds until ON, 1 and the whole digital clock will flash

Tap the clock button and the ON 1 hours will flash

Tap the up or down arrows to adjust the ON 1 hour

Tap the clock button and the ON 1 minutes will flash

IF REQUIRED tap the up or down arrows to adjust the ON 1 minutes

Tap the clock button and the OFF 1 and the whole digital clock will flash

Tap the clock button and the OFF 1 hour will flash

Tap the up or down arrows to adjust the OFF 1 hours

Tap the clock button and the OFF 1 minutes will flash

Tap the up or down arrows to adjust the OFF 1 minutes
Ensure that the OFF 1 minutes are different to the ON 1 minutes

NOTE: IF YOU ONLY REQUIRE 1 TIMER THEN YOU MAY LET THE TIMER FUNCTION TIMEOUT AND THE SECOND TIMER WILL REMAIN BLANK WITH "--:--" VALUES.
If you require a second timer then tap the clock button again and step through setting the ON 2 and OFF 2 times in the same manner as described above.

For units manufactured from January 2023 ignores timers with the same start and end time, that is 00:00 on through 00:00 off will not activate as 12:00 on thru 12:00 off will also not activate.
On and off times should have differing minutes also to ensure the desired period is achieved.
For example for a full daytime timer a start of 10:00 on thru 16:00 should have the minute increased to 16:01 to confirm the timer window operation.
For units manufactured prior to January 2023 do not set the second timer to 00:00 ON and 00:00 OFF as the unit will commence heating at midnight every second night.

Why don't my timer changes take effect?
If you are setting the timer and you are currently outside of the timer you wish to have, you will need to switch the unit to the OFF state by a 2 second press on the power button and let go. Conversely if you are adjusting it so the current time is inside the timer window, you may need to switch the unit to the ON state by a 2 second press on the power button and let go.
If you have shortened the timer but not switched it to the OFF state then the unit could reheat based on water usage until the next time the timer window turns ON and then OFF.
If you have lengthened the timer but the unit is still OFF then you will need to switch the unit to the ON state otherwise no heating will occur until the next time the timer window turns ON and then OFF. When the timer ON time is reached it activates the display and will show the temperatures etc, at the end of the timer window the display will return to the OFF state.

Find the LCD function video tutorials on our website.
https://heatpumps.istore.net.au/lcd-setup-tutorials/

Timer setting summary
ECO MODE ONLY
Press and hold the button 2 seconds, the "ON" and "1" will flash,

ON 1
tap the and the hour value will flash, adjust the hour up or down with the buttons
tap the again and the minute value will flash, adjust the minute up or down with the buttons

ON 2
tap the again and the full hh: mm will flash,
tap the again and the hour value will flash, adjust the hour up or down with the buttons
tap the again and the minute value will flash, adjust the minute up or down with the buttons

OFF 2
tap the again and the full hh: mm will flash,
tap the again and the hour value will flash, adjust the hour up or down with the buttons
tap the again and the minute value will flash, adjust the minute up or down with the buttons
tap the again and the LCD will return to ON 1, allow the LCD to time out at this point.
When the LCD returns to the default state the display will indicate whether 1 or 2 timers are set just above the digital clock, e.g.

EXAMPLE ONLY: Running period 1: 10:00 ~ 16:01; Running period 2: 00:00 ~ 03:01.
To review the timers press and hold button, do not release, the LCD will display each of the four ON and OFF times in order. Release the button after review and let the LCD time out.

Press and hold clock button and do not release

Continue to hold clock button

Continue to hold clock button

Continue to hold clock button
Allow the timer review function to timeout and return to the normal display.

Cancelling the Timer Setting

Press and hold the clock button until the timer flashes

Tap the power button to cancel the timer operation.

Vacation Mode (Setting the date of your return from your vacation)
In the example below the date when the istore is visited is August 20, i.e. 08:20, the return date is then set to September 16, i.e. 09:16
NOTE - the system clock must be set prior to starting this procedure.
If this is the first time you are setting the vacation date --:-- will be displayed. If you have previously set the return date that will be displayed, in our example 01:01, 2020

Tap the clock button and the ON, month, and day flashes

Remember – if this is the first time you are setting the vacation date --:-- will be displayed. If you have previously set the return date that will be displayed, in our example 01:01, 2020

Tap the clock button again, the ON and month will flash

Tap the up or down arrows to set the vacation end month

Tap the clock button again, ON and the vacation end day will flash

Tap the up or down arrows to set the vacation end day

Tap the clock button again, the ON and the 2 digit year flashes

Tap the up or down arrows to set the vacation end year

Tap the clock button again and the vacation return date is saved
The iStore will remain OFF until the Vacation return date.

Find the LCD function video tutorials on our website.
https://heatpumps.istore.net.au/lcd-setup-tutorials/

Electric booster setting
The Federal Government mandates a thermostat range of 12 degrees for the iStore, for the electric booster this is measured in the upper region of the tank displayed in the centre of the LCD. The heat cycle will not commence until the water in the upper region falls 12 degrees below the target temperature. Note if you engage the electric booster within the 12 degrees it will not operate.
The electric booster can be turned on when the unit is heating or standby.
Press once to turn on the electric booster and press again to shut it off.

Further Assistance? Go to the FAQ
Need some further assistance then please review the extensive Frequently Asked Questions at https://heatpumps.istore.net.au/frequently-asked-questions

Find the LCD function video tutorials on our website.
https://heatpumps.istore.net.au/lcd-setup-tutorials/

Home Owner Maintenance

Temperature and Pressure Relief valve PTV/PTR (all tanks)
The iStore Hot Water system is fitted with an 850kPa PTR Valve, which is located on the side of the cylinder and is essential for its safe operation. It is important that you operate the lever on the PTR valve for a few seconds once every 6 months. It is important you release the lever gently so the valve seat is not damaged.

Expansion Control Valve (ECV) (if applicable)
In some states and local councils, the installation of an Expansion Control Valve (commonly referred to a coldwater expansion valve) is required to be installed. If this valve is fitted, follow the same procedure for PTR valve as explained above.

Condensation line
Regularly inspect the condensation line to ensure water is dripping freely for the line. If the condensate drain is blocked at the discharge end, clear any debris that may have collected in the line. During normal operation, condensation occurs from the transfer of air across across the evaporator coil. This process is drawing humidity from the air and creates condensation/water droplets on the coils, which in turn is captured in the fully moulded condensate tray and discharged through the condensate drain line. In locations with humidity greater than 80%, up to 5 litres per day can be expected under normal operating conditions.

Obstructions
Regularly check the no obstructions are interfering with the air in-take or air discharge. If unit is installed near shrubs or trees, keep them trimmed so they do not interfere with air flow.

Recommended iStore Servicing
2 Year Service
The recommended two-yearly service should be carried out by a licensed tradesperson. It is recommended that this service be carried out by your local iStore installer. The service should include the following:

1. Replace the anode (anodes should be replaced more frequently if subjected to hard water conditions, refer table in the warranty exclusions, iStore must be consulted regarding the replacement anode if not a genuine iStore anode). If the TDS is greater than 600PPM, the anode shall be inspected every year and replaced at intervals not greater than every 12 months

5 Year Service

1. Replace the anode (anodes should be replaced more frequently if subjected to hard water conditions, refer table in the warranty exclusions, iStore must be consulted regarding the replacement anode if not a genuine iStore anode). If the TDS is greater than 600PPM, the anode shall be inspected every year and replaced at intervals not greater than every 12 months
2. Replace the pressure & temperature relief valve. (PTR Valve)
3. Flush the water heater
4. Check and clean tempering valve filters and operation

Trouble Shooting

Further Assistance? Go to the FAQ
Need some further assistance then please review the extensive Frequently Asked Questions at https://heatpumps.istore.net.au/frequently-asked-questions

Note your serial number and model here
Serial
Model