1. Product Overview
The SAWO Nordex Mini electric sauna heater is designed for small saunas, typically accommodating 1-2 people. It can hold up to 11 kg of sauna stones. This model (NB) features an integrated control unit. A heat reflector is included, which protects the wall behind the heater and directs hot air upwards within the sauna.
The heater's external casing is made of robust stainless steel, providing a modern aesthetic, while internal components are constructed from aluzinc for enhanced durability. With correct power selection, the heater typically reaches the desired temperature within approximately 60 minutes. The adjustable temperature range is between 60 to 90 °C, allowing users to set their preferred sauna climate.

Image 1: SAWO Nordex Mini electric sauna heater with integrated controls in a sauna setting.
2. Safety Warnings
- Professional Installation Required: Installation of this electric sauna heater must be performed by a certified electrician to ensure safety and reliability. Incorrect electrical connections can lead to electric shock or fire hazards.
- Stone Compatibility: Only use natural sauna stones specifically designed for sauna heaters. Never use ceramic stones or any other type of artificial stones, as they can crack, explode, or release harmful substances when heated.
- Ventilation: Ensure adequate ventilation in the sauna room as specified by sauna construction guidelines.
- Clearance Distances: Maintain minimum safety distances from the heater to walls, ceiling, and other combustible materials as specified in the installation section.
3. Setup and Installation
3.1 Pre-Installation Considerations
For optimal performance, your sauna must be properly constructed and insulated. The heater's power output should be selected based on the sauna room size, wall materials, and insulation quality. Ensure efficient air circulation within the sauna.
3.2 Electrical Connection
The SAWO Nordex Mini is a multi-voltage heater, supporting both single-phase and three-phase installations:
- Single-phase 230V: Requires a 1x16A fuse and 3x2.5mm² cable.
- Two-phase 400V: Requires a 2x10A fuse and 4x1.5mm² cable.
Sauna stones and silicone connection cables are not included. The connection cable must be of type HO7RN-F or equivalent.
3.3 Mounting
The heater is designed for wall-mounted installation. A mounting bracket is included. Refer to the detailed installation manual provided with the product for specific mounting instructions and required safety clearances.
4. Operating Instructions
The Nordex Mini heater features an ergonomic integrated control unit for easy operation.

Image 2: Integrated control unit with thermostat and timer dials.
4.1 Thermostat Control
To adjust the sauna temperature, rotate the thermostat knob. The thermostat will automatically maintain the selected temperature once reached.
4.2 Timer Control
The timer knob has two sections:
- White Section (1-8 hours): This range is for setting the pre-start time. You can set the heater to begin operation after a delay of 1 to 8 hours.
- Pink Section (1-4 hours): This range is for setting the duration of operation. Once the heater starts, it will operate for the selected duration (1 to 4 hours).
5. Maintenance
Regular maintenance ensures the longevity and safe operation of your sauna heater.
- Sauna Stones: Inspect sauna stones periodically (at least once a year, or more frequently with heavy use). Replace any cracked, crumbling, or discolored stones. Rearrange stones to ensure good air circulation.
- Cleaning: The exterior of the heater can be wiped with a damp cloth. Do not use abrasive cleaners or solvents. Ensure the heater is cool and disconnected from power before cleaning.
- Electrical Connections: Have a qualified electrician inspect electrical connections periodically to ensure they remain secure and free from corrosion.
6. Troubleshooting
If you encounter issues with your SAWO Nordex Mini heater, consider the following general troubleshooting steps:
- Heater Not Heating: Check the circuit breaker or fuse for the sauna heater. Ensure the timer is set correctly and has not expired. Verify the thermostat setting is above the current sauna temperature.
- Insufficient Heat: Ensure the sauna door is properly closed. Check the condition and arrangement of sauna stones; replace or rearrange if necessary. Verify the sauna room size is within the heater's recommended capacity.
- Overheating: Ensure proper ventilation in the sauna. Check the thermostat setting.
For persistent problems or any electrical concerns, contact a certified electrician or SAWO customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | SAWO |
| Model Number | NRMN-23NB-Z |
| Power Output | 2.3 kW |
| Dimensions (HxWxD) | 495 x 340 x 200 mm |
| Weight | 7 kg |
| Installation Type | Wall-mounted (mounting support included) |
| Max Stone Capacity | 11 kg (stones Ø 5-10 cm) |
| Recommended Sauna Size | 1.3 - 2.5 m³ |
| Minimum Safety Distance (Ceiling) | 1200 mm |
| Minimum Safety Distance (Sides) | 40 mm |
| Electrical Connection | Multi-Tension: Single-phase 230V or Two-phase 400V |
8. Warranty Information
SAWO provides the following warranty for the Nordex Mini electric sauna heater:
- Domestic Use: 2 years for the heater.
- Commercial Use: 1 year for the heater.
Please note that sauna stones and connection cables are not covered under this warranty.
9. Customer Support
For further assistance, technical inquiries, or warranty claims, please contact your SAWO authorized dealer or visit the official SAWO website for contact information.





