The Fronius Solar.wattpilot app can be used to start up, configure, operate, visualise and update the Wattpilot. The app is available for Android™ and iOS®.

Download The Fronius Solar.wattpilot app is available on the following platforms.

• Google Play Store
• Apple App Store

You can access the Wattpilot via the app as follows:

Launching the app

1. Open the Fronius Solar.wattpilot app on the end device and follow the Setup wizard.
2. Read and accept the terms of use
3. Click on "Connect"

NOTE: Access for the Fronius Solar.wattpilot app must be allowed for end devices with an iOS operating system.
iOS settings > Privacy > Local network > Fronius Solar.wattpilot > Allow access to local network

Setting up a hot spot

The Wattpilot permanently opens a hot spot

1. Scan the QR code on the reset card or connecdt the end device to the WLAN hot spot. The passowrd is located on the reset card of the Wattpilot.
2. Follow the further instructions in the app.

NOTE: The selected WLAN of the Wattpilot must remain connected despite the absence of an Internet connection for end devices with an Android operating system.

Setting up the WLAN 

1. Select WLAN and enter the password
2. Follow the further instuctions in the app.

NOTE: It can take up to 1 minute to establish the connection! If the signal strength is low, a WLAN repeater must be installed, for example.

Adding a Wattpilot

New or connected Wattpilot devices can be added in the Fronius Solar.wattpilot app.

1. Click on the "+" symbol
2. Click on the "Add" for the connected Wattpilot
3. Follow the further instructions in the app

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Benefits include:

You can save up to 80% of your  hot water energy costs when compared with a traditional electric hot water system!  The Sanden Eco® Plus Hot Water Heat Pump uses only 20% of the energy required by older-style, electric element  hot water storage systems.

Not only does a Sanden Eco® Plus heat pump hot water system help save on energy costs, it also delivers:

(a) Heat Pump Unit Benefits:

• Innovative technology; up to 50% faster heat recovery than currently available Hot Water Heat Pumps.
   
• Industry leading quality & performance; the Sanden Eco Plus gives you the highest level of STC credits of any currently available heat pump hot water system.
   
• Class leading warranties; backed by Sanden’s 35 years of operation in Australia.
  
   

(b)  Stainless Steel Storage Tank Benefits:

• High quality; extra long life duplex stainless steel cylinder.
   
• Fully insulated; for extremely low heat loss.
   
• Safety, pressure and temperature relief valves.
   
• Mains pressure rated.

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Yes, importantly no warranty applies to the heat pump unit and the storage tank, where the chloride level exceeds 200 mg/litre and the pH is less than 6.0. If in doubt, seek water quality information from your local council or water supplier.

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The Sanden Eco® Plus heat pump hot water (HPHW) system operates like a refrigerator in reverse. It contains a fan that forces air through an evaporator that contains a refrigerant. The heat in the ambient air passes through the evaporator (note: even air below 0 º C contains heat energy) and is absorbed by a natural refrigerant, R744 (aka CO_²), which is ozone friendly and does not significantly contribute to global warming compared with most other refrigerants (older style refrigerants have thousands of times more global warming impact for the same amount of gas, when compared with CO₂).

The warm gaseous refrigerant is circulated in the system via a compressor. As it passes through the compressor, its pressure rises, as does its temperature. This hot refrigerant then passes through a heat exchanger to heat the water, which is finally pumped to the storage tank.

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Check our comprehensive Sanden not working checklist here if you think you have a problem with your Sanden Eco heat pump hot water system.

If you're still unsure after going through this guide - please lodge a Pure Electric Service Case here

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The HP will display an error code if it is unable to function normally.
Error codes are indicated by a red LED on the control panel. The control panel is visible via a small window at the right side of the heat pump and it can be accessed by removing the heat pump top cover (4 screws).

After a component is replaced or the inspection is completed, cycle power to the unit several times to confirm the error does not re-occur.
Below is the list of the error codes. If the corrective action does not solve the error problem, a malfunction of the PCB valve is highly likely.

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Why does the Sanden use CO2 as its working gas, what is the benefit?

• There is far less environmental impact (i.e. No ozone layer depletion and minimal global warming) than other commonly used refrigerants, should the system leak. 
   
• There is a much higher efficiency, thereby allowing more heat to be transferred to the water, for less energy used (i.e. Excellent  thermodynamic ability).

Isn't CO2 a greenhouse gas and therefor bad for the environment?

While it is true that Carbon Dioxide (CO₂) is a greenhouse gas it has a Global Warming Potential (GWP) of 1. Whereas refrigerant gases in other heat pumps can have GWP of over 10,000, which means if they leak to the atmosphere they contribute 10,000 times more to global warming compared with the refrigerant gases used in a Sanden Eco Plus. 

The table below shows the GWP for some common refrigerant gases (note: GWP must include a time interval over which the greenhouse gases act, in this case 100 years)

Our system utilizes less than 1 kg of R744 (CO²) as a refrigerant contained in a closed system at the factory.  The installer does not need to charge the heat pump on site.

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Yes,  for efficient processing of warranty claims, should they arise, please register your Sanden Eco® Plus heat pump hot water system here.

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The unit is rated at 37dB (measured at one metre from the unit), which is almost silent. By comparison, a whisper is around 30dB and the sound of the inside of a Library is approximately 40dB.

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The Sanden Eco Plus hot heat pump hot water system is available in the following five sizes with our sizing guide below:

*SS = Stainless Steel // VE = Vitreous Enamel

The same Sanden Heat Pump condenser unit is used in combination with different tanks sizes. So which tank size you would like?

When considering tank sizes - we need to consider a few factors - number of people, number of bathrooms, the heat recovery rate.

If you're using an existing hot water system for comparison - here are some comments/thoughts:

If you have an existing gas storage hot water system (e.g. 130L / 170L) - these are much smaller in capacity but they will reheat several times a day. Therefore the Sanden tank size will be larger than an existing gas storage replacement with the Sanden re-heat typically only required once per day - a good opportunity to maximise rooftop solar PV production or to utilise an off peak tariff.

If you have an existing electric storage hot water system (e.g. 400L 3.6kW unit) - these electric storage 3.6kW units recover heat at a slower rate (60L/hr) compared to a Sanden heat pump (approx. 80L/hr). Therefore a 400L electric storage hot water system would equate to a 300L/315L Sanden system in this example.

Based on our years providing the Sanden Eco heat pump hot water system - here are our tank recommendations for different scenarios (SS - Stainless Steel // VE - Vitreous Enamel):

160L SS: Only recommended for 1 person bedsits. This tank size is rarely chosen and due to its small tank size must be run in Continuous only mode (no blockout timer can be set up).

250L SS: Typically 1-3 person household with 1 bathroom. Height just under 1.5m with tank diameter 621mm.

300L SS: The Tall Slim - the most popular and best recommended tank choice. Recommended for 2-6 people. Tank diameter 580mm and tank height just under 1.9m. If no height restrictions apply, this is the recommended tank for majority of situations and considered best value for money across the tank sizes.

315L SS: The largest tank size with an additional 15L delivered hot water (5% more) compared to the 300L Tall Slim tank. Tank diameter 621mm with tank height 1.74m - this is recommended if the 300L tall slim tank is too tall for your application.

315L VE: Tank diameter 638mm with tank height 1.63m with 315L delivered hot water. This VE tank is specified for poor water quality areas - you can identify if you are in a poor water quality area via the Sanden website -> https://www.sanden-hot-water.com.au/check-water-quality/

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