AC ELWA2 3,5 kW photovoltaic water heating device

ELWA2 3,5 kW  - electric heater 3,5 kW with thermostat

• AC ELWA 2 is a 0 – 3.5 kW linearly controlled water heating device for grid-connected photovoltaic systems. Missing residual energy can optionally be imported from the public electricity grid – also cost-optimized with dynamic electricity tariffs!
  Perfect PV-utilization with battery and hot water storage.
  Charging of the battery storage has priority. Once the battery is fully charged, AC ELWA 2 starts using surplus energy for hot water heating. Water is the cheapest form of storage and complements perfectly with battery storage systems.
• The linear power control of AC ELWA 2 works, similar to a grid connected inverter, with high frequency switching power electronics. This minimizes network disturbances, EMC and power-grid conformity is guaranteed in contrast to thyristor controllers.
• Technical data
  Heating power 0 – 3,500 W + relay output 16 A
  Fuse protection 13 A or 16 A
  Mains connection 3-pole terminal, 2.5 mm2 230 V, 45 – 65 Hz
  Self-consumption < 1,5 W
  Efficiency > 99,3 % at nominal power
  Cos Phi 0,999 at nominal power
  Certification CE, TOR D1, TAEV, TAB
  Mains-side THDi At 50 % power < 3 %; at 100 % power < 3 %
  Display Color Graphic, Touch Screen 2,83“
  Communication
  Ethernet RJ45, Wifi,
  RS485,
  PWM-in 3 – 24V, 100 Hz – 1 kHz,
  galvanically isolated relay contact
  External temperature sensor 5 m
  Protection class IP 21
  Dimensions (W x H x D) 580 x 133 x 117 mm (incl. heating rod)
  Heating rod length 460 mm (from the sealing)
  Heat-free zone 140 mm
  Weight 2 kg
  Heating rod thread dimension G 1 ½ Zoll
  Tightening torque 50 Nm
  Operating temperature range Ambient temperature at the casing 0 °C to 40 °C
  Permissible humidity 0 – 99 % (not condensing)
  Storage temperature -20 °C to 70 °C
  Max. operating pressure 10 bar
  Mounting position horizontal
  Warranty 2 years
  Maximum number of units in IP network Network dependent. With the my-PV WiFi Meter, up to 11 devices
  Compatible battery storage / smart home controllers