Solarmi GETI GWH03W 4000W MPPT inverter controller for solar water heating 4kW Wi-Fi

Solarmi GETI GWH03W

Solar inverter GETI GWH03W 4000 W MPPT for PV water heating

The GETI GWH03W solar inverter is particularly suitable for use in systems for photovoltaic water heating using the subsidy program NZÚ and NZÚ light. Save costs and heat water with solar energy today. Thanks to the GETI GWH03W solar inverter with automatic grid switching and the possibility of independent adjustment of the water temperature for heating from PV or AC, you can significantly reduce your hot water heating costs. The NZÚ Light subsidy will then cover up to 100% of the costs of the installed system.

The inverter developed for PV water heating enables the direct use of photovoltaic panel systems to power resistance heating devices such as boilers, heaters, heating mats or heating coils. In addition, the inverter is also equipped with an AC input, which allows connecting the inverter to the mains voltage and heating water even when sunlight is insufficient for heating.

The inverter is equipped with remote control and supervision via a Wi-Fi network and a clear application, a large clear LED display, a temperature sensor with a length of 3 m and independent temperature setting for heating water from both the PV and AC networks. The inverter also has a forced heating function. The function is only available in the application and through it you can activate heating from the network if necessary. The inverter is compatible with most boilers on the market.

Warning

• The GETI GWH inverter is only suitable for resistive loads with a bimetallic thermostat. Not suitable for electronically controlled thermostats! Inverter output (L
• N) must not be connected to the mains or earth! The output of the inverter must not be connected to the TN-C system.

The system is simple, it only requires the connection of the appropriate number of photovoltaic panels with a maximum power of 4000 W with an operating voltage of 160-420 V DC, a mains voltage of 230 V AC and a connection to a resistive load, e.g. a heating coil, an electric boiler, an electric radiator or underfloor heating and securing elements. The direct current generated in the panels, which cannot be fed directly to the heating devices, is converted into alternating current in the inverter, which can be used to power the heating devices. The maximum power of the system is 4000 W. The inverter has a priority input from the photovoltaic panels, and in the event of a lack of power on these panels, the system is backed up by power from the mains voltage of 230 V AC.

• Water heating using a resistive load (heating coil, boiler)
• Remote supervision via Wi-Fi network
• Remote monitoring
• Forced water heating from the network remotely
• Temperature sensor
• Independent temperature setting for heating from PV and AC
• Automatic switching between networks (PV / network 230 V AC)
• Working modes: only PV as an island system or automatic mode PV + network
• Silent operation that ensures passive cooling
• Effective monitoring of the maximum power on the panels using MPPT

The GETI GWH03W inverter is equipped with a clear LED display that informs the user about the current and set values:

• Indication of water heating from PV panels
• Indication of water heating from the 230 V AC network
• water temperature (PV, AC) current and set
• PV power and PV voltage
• Operation indication
• Error status indication

Technical parameters:

• Switching logic: priority is solar heating, when the solar input voltage is lower than 100 V DC, the inverter switches to the grid. When the solar input voltage is higher than 150V DC, the MPPT starts to work and supply power.
• Load type: resistive with bimetal thermostat (not suitable for electronically controlled thermostats!)
• The value of the resistive load must not be lower than 13 ohms
• Connection of PV panels: series or series-parallel
• Priority input: PV panels
• Short circuit protection at the input
• Protection against overheating
• Input connection of PV panels: MC4 connectors
• Input connection 230 V AC: screw terminal
• Output connection 230 V AC: screw terminal

Temperature range for heating: 35-80 °C

MPPT function: yes

Wi-Fi: yes

Efficiency: >99%

Degree of protection: IP33

Material: aluminum + metal

Operating temperature: -25-55 °C

Dimensions: 195 x 183 x 100 mm

Weight: 2.4 kg

Solar power

Max. input solar power: 4000 W

Max. input current: <20 A

Input voltage range: 160-420 V DC

MPPT Operating Voltage Range: 150-370V DC

• MPPT efficiency: >99% % Output voltage range: 0-260 V AC

Output current range: <20A

Mains power

Rated AC Power: 4000W

Nominal AC voltage: 230 V AC

Input AC voltage range: 180-260 V AC

Rated AC current: <20A