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AC ELWA 2 is a 0 - 3.5 kW linearly controlled water heating device for grid-connected photovoltaic systems and is the successor to our proven AC ELWA-E. In order to maximize the self-consumption of your current PV system, AC ELWA 2 harnesses the system's surplus photovoltaic energy to heat your water. Increasing self-sufficiency simultaneously safeguards against unpredictable or rising operating costs. The PV feed-in power can be regulated to zero by the linear control.
Our trusted optional hot water backup function is included in AC ELWA 2: In the absence of sufficient sunlight, energy from the public power grid can be used to heat the water to the desired temperature. AC ELWA 2 can be installed in hot water and buffer storage tanks.
Advantages of AC ELWA 2 over AC ELWA-E include:
More power: 3.5 kW as opposed to 3.0 kW
Very straightforward installation: Heating element and control unit can be installed one after the other
Ease of use thanks to the touchscreen display
Flexible control options: in addition to RJ45/Modbus TCP Ethernet, RS485/Modbus RTU, PWM-in, galvanically isolated relay contact
Integrated external temperature sensor
A second standard heating element can be controlled
Even more compact design than its predecessor
No cable, fixed wiring and a shockproof plug
Transitioning from AC ELWA-E to AC ELWA 2 is simple
