HARVIA PRO-IP-D3 is an electric sauna heater control unit featuring an IP65-rated enclosure, designed for traditional and combined sauna heating systems with an evaporator. The unit supports electric sauna heaters with a power output of up to 10.5 kW and evaporators with an output of up to 3.5 kW.
The control system allows users to adjust the sauna temperature, control evaporator operation, set the heater operating time and configure a preset start time. With an additional humidity sensor, the system can regulate and display relative humidity. Without a humidity sensor, the evaporator can operate using predefined switching cycles.
The IP65-rated enclosure protects the power unit against dust and water jets when correctly installed in accordance with the manufacturer's requirements. This provides greater flexibility when selecting an installation location, provided the specified ambient temperature and electrical safety requirements are observed.
Main features and benefits:
- Control of electric sauna heaters up to 10.5 kW.
- Evaporator control up to 3.5 kW.
- Temperature adjustment from 30 to 110 °C.
- IP65-rated power unit enclosure.
- Evaporator operation using timed cycles or an optional humidity sensor.
- Digital humidity adjustment and display with a compatible humidity sensor.
- Automatic post-drying programme after humid sauna operation.
- Adjustable heater operating time limits of 6, 12, 18 or 24 hours.
- Preset start timer.
- Sauna lighting and ventilation fan control, up to 100 W each.
- Support for single or dual temperature sensor systems.
- ECO mode and user programmes.
- Remote start capability with compatible additional equipment.
- Possibility of connecting an external power extension unit.
- Support for multiple compatible control panels.
Evaporator and humidity control
The PRO-IP-D3 is designed for sauna systems equipped with an electric heater and an integrated or separately connected compatible evaporator.
The system allows users to select traditional dry sauna operation or a humid sauna mode. When equipped with an optional O-FTS2 temperature and humidity sensor, the control unit can regulate sauna conditions based on measured relative humidity.
An automatic post-drying programme can be used after humid sauna operation.
Important: The control panel is not included and must be purchased separately. The compatible HARVIA PRO-D3-CU control panel is suitable for this system.
External main power and lighting switches are also required for the IP65 version and are not included.
Electrical installation must be carried out by a qualified professional in accordance with the manufacturer's installation instructions.
