Key Features

IP54 enclosure

Benefits

• Helps increase self-consumption of solar power by directing surplus energy to heating loads.
• Can reduce reliance on the primary heating system during periods of high solar yield.
• Supports use of solar energy for hot water supply over much of the year, as stated in the source data.
• Provides flexible control for a range of resistive heating loads used in domestic heating systems.

Technical Summary

Fronius Ohmpilot 9.0-3, wall-mounted consumption regulator. Max output power 9 kW, continuously adjustable. Input/output voltage 230 V / 3*230 V. Max input current 16 A / 3*16 A. Nominal AC output current 13 A / 3*13 A. Frequency 50 Hz. THDi < 3%. Dimensions 350 x 280 x 110 mm. Weight 3.9 kg. IP54 protection. Ambient temperature range 0 to 40 °C.

Installation Notes

Wall mounting. A Fronius Datamanager 2.0 and a Fronius Smart Meter are required to use the device. For three-phase heating rods, the neutral conductor must be connected to the input voltage and the heating rod. A PT1000 temperature sensor is advisable for setting minimum and target temperatures.

Efficiency

Uses excess solar power for heating to increase self-consumption. Source data states that dynamic power reduction enables zero feed-in and that self-consumption can increase by up to 100%. Pulse width modulation is used for power regulation.