Solarmi GETI GWH02D 4000W MPPT inverter controller for solar water heating 4kW

Solarmi GETI GWH02D

GETI GWH02D 4000 W MPPT solar inverter for PV water heating

The GETI GWH02D solar inverter is particularly suitable for use in photovoltaic water heating systems using the NZÚ and NZÚ Light subsidy program. Save costs and heat water with solar energy today. Thanks to the GETI GWH02D solar inverter with automatic grid switching, 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 enables the direct use of photovoltaic panel systems for powering resistance heating devices such as electric boilers, heaters, heating mats, water heating, etc. The inverter is also equipped with an AC input, which enables the inverter to be connected to the mains voltage and to heat water even when it is insufficient solar radiation for heating.

Note: The GETI GWH inverter is only suitable for resistive loads with a bimetallic thermostat. Not suitable for electronically controlled thermostats! The 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 to 350 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 when this voltage drops below 120 V, the water heating will be powered from the mains voltage of 230 V AC.

• Solar inverter for hot water heating using a resistive load (heating coil, boiler)
• Automatic switching between grids (PV & grid 230 V AC)
• Separate temperature setting for heating water from the PV or AC network
• Working modes: only PV as an island system or automatic mode PV + network
• Quiet operation - passive cooling
• Effective monitoring of the maximum power on the panels using MPPT
• High efficiency > 99%

It is equipped with a circuit with switching relays, which connect its output either to the inverter circuit or directly to the AC network, for which it is only pass-through. The Geti inverter is therefore only backed up by the network (it is a so-called bypass). Since both energy sources are separated in this way, it is not possible for the inverter to cause unauthorized overflows into the grid.

The inverter is equipped with an LED display that informs the user about the current status of the inverter.

• 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 output
• PV voltage
• Operation indication
• Error status indication

Technical parameters:

• Input voltage (DC): 160-350 V
• Input voltage (AC): 230 V
• Output voltage (AC): 0-260V
• Maximum power: 4000 W
• input current from PV: max. 20 A
• AC output current: max. 20 A
• 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
• MPPT function: yes
• Connection of PV panels: series or series-parallel
• Priority input: PV panels
• Backup input: mains 230 V AC
• Working temperature: -25 to + 55 °C
• Efficiency: > 99%
• Length of the temperature sensor: 3 m
• Cooling: passive
• 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
• Material: aluminum + metal

The package includes a temperature sensor (3 m).

Max. power: 4 kW

Input voltage: DC 160-350 V or AC 230 V

Output Voltage: AC 0-260V

Degree of protection: IP65

Dimensions: 255 x 201 x 95 mm

Weight: 3 kg