In case of space constraints in the switch board, rope CT’s can be used. Please note that rope CT’s are voltage reference CT’s, which are smaller than current reference CT’s and can only be used along with the 480VUL Fronius Smart Meter. So, if you have proposed a system with a 50 kA Fronius Smart Meter and you have space constraints in the main switchboard, then you can solve the situation by having a 480V UL Fronius smart meter with rope CT’s.

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.

The Sanden Eco Plus hot heat pump hot water system is available in the following four sizes:

Tank size/shape No. of persons using hot water Typical dwelling type Suitable for Off-peak & Continuous tariffs? STC rebates available?
160L 2-4 Units / Townhouses Continuous only Yes
250L 3-5 Residential Both Yes
300L 4-6 Residential Both Yes
315L 4-6 Residential Both Yes

Yes, if your export limit is equal to or greater than the other inverter’s output capacity this can be done. Please note: The Fronius Smart Meter will not control the power output of the third-party inverter. For example: If the third-party inverter is 1.5 kW and Fronius inverter is 5 kW and there is only 5 kW allowed to export, then the export limitation value that can be set on the Fronius inverter is 5 kW.

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 CO2), 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.

How a Sanden Eco Plus Heat Pump Hot Water services works

 

Using a Fronius Smart Meter it is possible to export limit on the Fronius Symo Hybrid but not on the Fronius Symo inverter because the Fronius Smart Meter will be connected to the Fronius Symo Hybrid inverter, which in turn cannot be daisy chained with the Fronius Symo inverter.

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)

How Sanden delivers better Performance and Savings

 

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.

 

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.

The flashing red dot (LED) indicates the Sanden is currently in 'sleep mode', it is perfectly normal and nothing to worry about. 

In case of space constraints in the switch board, rope CT’s can be used. Please note that rope CT’s are voltage reference CT’s, which are smaller than current reference CT’s and can only be used along with the 480VUL Fronius Smart Meter. So, if you have proposed a system with a 50 kA Fronius Smart Meter and you have space constraints in the main switchboard, then you can solve the situation by having a 480V UL Fronius smart meter with rope CT’s.