Ohmpilot — water heating controller for surplus solar energy 3/9 kW
Country: Austria · Model: Ohmpilot
The Ohmpilot controller sends surplus solar generation to water heating and varies load power steplessly over 0–9 kW, up to 3 kW on one phase and up to 9 kW on three. It drives heating elements in boilers and buffer tanks or heat pumps.
- Max. output power
- 3 kW (1 phase) / 9 kW (3 phases), stepless 0–9 kW
- Grid frequency
- 50 Hz
- Ingress protection
- IP54
- Dimensions (H×W×D)
- 350×280×110 mm
Technical specifications
| Max. output power | 3 kW (1 phase) / 9 kW (3 phases), stepless 0–9 kW |
|---|---|
| Grid frequency | 50 Hz |
| Ingress protection | IP54 |
| Dimensions (H×W×D) | 350×280×110 mm |
| Weight | 3.9 kg |
| Loads | heating elements of boilers and buffer tanks, heat pumps |
| More from the manufacturer’s documentation | |
| Max. input current | 16 A (1-phase); 3 × 16 A (3-phase) |
| Input and output voltage | 230 V (1-phase); 3 × 230 V (3-phase) |
| Rated AC output current | 13 A (1-phase); 3 × 13 A (3-phase) |
| 3-phase connection | with installed and connected neutral conductor |
| Current harmonic distortion (THDi) | < 3 % |
| Power regulation | pulse width modulation (PWM) |
| Mounting | wall mounting |
| Operating temperature | 0 to +40 °C |
| Permissible humidity | 0–99 %, non-condensing |
| Standards | CE, EN 61000-6-2, EN 61000-6-3, EN 61000-3-2, EN 61000-3-3, EN 300 328 |
| Monitoring | parameters shown in Solar.web |
| Customs codes (for reference) | |
| HS code | 9032.89 |
| UKTZED code (Ukraine) | 9032890000 |
| CN code (EU) | 90328900 |
Specifications are taken from the manufacturer’s technical documentation. Updated . Customs codes are for reference only; the final code is determined at customs declaration for the specific model.
Description
The unit acts as a controlled load and routes to heating the photovoltaic power that would otherwise be exported to the grid. Power to the element is metered out by pulse width modulation, with current harmonic distortion below 3 %. Input and output are rated 230 V, input current up to 16 A per phase and rated output up to 13 A. A three-phase connection is only made with the neutral conductor run and connected. Scheduled heating and a boost mode are available, and water temperature shows up in Solar.web. The controller runs on a 50 Hz grid, and its wall-mounted IP54 enclosure measures 350×280×110 mm (H×W×D) and weighs 3.9 kg.
How to choose
The wiring follows the heater. A single-phase element up to 3 kW goes on one phase, while a three-phase element bank or heat pump up to 9 kW needs three phases plus neutral. The room must stay within 0 to +40 °C, so an unheated boiler room is not a fit. If the surplus exceeds what the water tank absorbs, add a Wattpilot Flex charger as a second controlled load with PV charging at 1.38–11/22 kW.
Request a price and lead time
Ohmpilot — water heating controller for surplus solar energy 3/9 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How much power does Ohmpilot control?
Steplessly over 0–9 kW, up to 3 kW on a single-phase connection and up to 9 kW on three phases.
Can Ohmpilot be connected to a heat pump?
Yes, it works with heat pumps as well as boiler and buffer tank heating elements, with up to 9 kW output.
What are the dimensions and ingress protection of Ohmpilot?
The enclosure is 350×280×110 mm, weighs 3.9 kg and is rated IP54.
Does a three-phase Ohmpilot need a neutral wire?
Yes, on a three-phase connection the neutral must be run and connected. Output current is up to 3 × 13 A at 3 × 230 V.
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Need a price, lead time or replacement?
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