Maximize solar power for hot water and more self-consumption
AC ELWA 2
Our AC ELWA 2 is a 0 - 3.5 kW continuously controlled water heating device for grid-connected photovoltaic systems and is the successor to our proven AC ELWA-E. The AC ELWA 2 uses excess photovoltaic energy for your hot water preparation and thus optimizes the self-consumption of the existing PV system. At the same time, self-sufficiency is increased - this protects against unforeseeable or rising operating costs. The stepless control regulates the PV feed-in power to zero.
The AC ELWA 2 has our proven optional hot water security: Even if the sun is not shining sufficiently, the hot water can be brought to the desired temperature using energy from the public power grid. The device can be installed in hot water and buffer tanks.
Advantages of the AC ELWA 2
Self-consumption increases
Simple communication via network cable or WLAN
Heating output is continuously regulated
Can be installed in hot water and buffer tanks
System-open for various inverters, battery systems and smart homes
Advantages of the AC ELWA 2 compared to its predecessor AC ELWA-E
More power: 3.5 kW instead of 3.0 kW
Extremely simple installation: The heating element and the control unit can be installed one after the other.
Easy to use thanks to the display like the AC•THOR
Multiple communication options: in addition to Ethernet RJ45, also WLAN, RS485, PWM-in, potential-free switching output
External temperature sensor included
An external 3 kW heating element can be connected
Even more compact design than the predecessor
Fixed wiring, no cable with Schuko plug
Easy conversion of the AC ELWA-E to AC ELWA 2
Technical data
Heating output 0 – 3,500 W + 16 A switching output
Mains connection 3-pin terminal, 2.5 mm2 230 V, 45 ‒ 65 Hz
Protection class IP21
Dimensions (W x H x D) 580 x 133 x 117 mm (with heating element)
Heating element length 460 mm (from the sealing surface)
Heating cartridge connection 1 1/2 inch
Color graphic display, touch screen 2.83“
Interfaces Ethernet RJ45, WLAN, RS485, PWM-in 3 ‒ 24V 0 ‒ 1 kHz, potential-free switching output
External temperature sensor 5 m
