1. はじめに
This manual provides essential information for the safe and efficient use of your Nexans millimat/100 N-HEAT electric underfloor heating system, including the CDFR-003 thermostat. Electric underfloor heating offers a comfortable and energy-efficient way to heat your living spaces. Please read this manual thoroughly before installation and operation to ensure proper functionality and longevity of your system.
2.製品オーバーview および機能
The Nexans millimat/100 N-HEAT system is designed for easy installation and provides consistent, comfortable warmth. It is a complete electric underfloor heating kit, featuring a high-quality heating mat and a digital thermostat.
主な利点:
- Low installation cost.
- メンテナンスフリー操作。
- Easy handling and adjustment.
- エネルギー消費の削減。
- Long lifespan, contributing to a comfortable indoor climate.
Heating Mat Structure:
- Conductor: Double resistance wire.
- Insulation: FEP.
- Earth Conductor: Solid copper.
- Reinforcement: Fiberglass mesh.
- Outer Sheath: PVC.
- Shielding: Aluminum coating.
- Total Thickness: 4.5 mm.
- 幅:50cm。

Image 2.1: A person enjoying a comfortable bathroom environment, illustrating the benefit of the Nexans underfloor heating system. The heating mat is visible beneath the floor surface.

図2.2: 断面図 view illustrating the installation of the Nexans underfloor heating mat beneath the floor finish in a bathroom setting.
3. 技術仕様
The following specifications apply to the Nexans millimat/100 N-HEAT electric underfloor heating system:
- Heating Power: 100 W/m² or 150 W/m² (depending on model).
- Element Values: From 100 W to 1800 W.
- Max. Continuous Operating Temperature (Outer Sheath): 65 °C.
- Conductor Resistance Tolerance: -5% / +10%.
- 名目Voltage:230V。
Mat Dimensions and Power Output:
| Mat Area (m²) | Heating Power 100W (W) | Heating Power 150W (W) | Mat Length (m) | Mat Width (m) | 最小部屋面積(m²) |
|---|---|---|---|---|---|
| 1.0 | 100* | 150* | 2.0 | 0.5 | 1.2 |
| 1.5 | 150* | 225* | 3.0 | 0.5 | 1.8 |
| 2.0 | 200* | 300* | 4.0 | 0.5 | 2.3 |
| 2.5 | 250* | 375 | 5.0 | 0.5 | 2.8 |
| 3.0 | 300* | 450 | 6.0 | 0.5 | 3.4 |
| 3.5 | 350 | 525 | 7.0 | 0.5 | 3.9 |
| 4.0 | 400 | 600 | 8.0 | 0.5 | 4.5 |
| 5.0 | 500 | 750 | 10.0 | 0.5 | 5.6 |
| 6.0 | 600 | 900 | 12.0 | 0.5 | 6.7 |
| 7.0 | 700 | 1050 | 14.0 | 0.5 | 7.8 |
| 8.0 | 800 | 1200 | 16.0 | 0.5 | 8.9 |
| 10.0 | 1000 | 1500 | 20.0 | 0.5 | 11.1 |
| 12.0 | 1200 | 1800 | 24.0 | 0.5 | 13.3 |
*These mat sizes are not supplied with a hidden splice joint.

Image 3.1: Detailed table outlining the mat area, heating power, length, width, and minimum room area for various millimat/100 models.
4。 構成部品
4.1. Heating Mat (millimat/100 N-HEAT)
The heating mat consists of a thin heating cable pre-attached to a fiberglass mesh, designed for easy unrolling and installation. It provides uniform heat distribution across the floor surface.

Image 4.1: The Nexans millimat/100 N-HEAT heating mat unrolled, showing the heating cables attached to the mesh.
4.2. Thermostat (CDFR-003)
The CDFR-003 thermostat controls the underfloor heating system, allowing you to set and maintain your desired floor temperature. Modern thermostats offer advanced energy-saving functions, such as temperature reduction for day and night savings.

Image 4.2: The Nexans CDFR-003 thermostat with a rotary dial for temperature control and a power button.

Image 4.3: An alternative Nexans digital programmable thermostat, offering precise temperature control and scheduling options.
5. セットアップとインストール
Installation of the Nexans millimat/100 N-HEAT electric underfloor heating system should be performed by a qualified electrician or heating professional in accordance with local building codes and electrical regulations.
一般的なインストール手順 (詳細については完全なインストール ガイドを参照してください):
- 床下地を準備する: Ensure the subfloor is clean, dry, level, and free from debris. Apply a suitable primer if necessary.
- Plan Mat Layout: Determine the optimal placement of the heating mat, avoiding permanent fixtures and ensuring even heat distribution.
- フロアセンサーの取り付け: Place the floor temperature sensor in a conduit between two heating cables, ensuring it is centered and accessible for future maintenance.
- 加熱マットを敷く: Unroll the mat onto the prepared subfloor. The mesh can be cut and turned to fit the room shape, but never cut the heating cable itself.
- 電気接続: Connect the cold lead of the heating mat and the floor sensor to the thermostat. The thermostat must be connected to the main power supply by a qualified electrician.
- 床材を敷く: Once the mat and sensor are installed and tested, apply a suitable leveling compound or tile adhesive over the mat before installing the final floor covering.
6. 操作手順
The CDFR-003 thermostat allows you to control your underfloor heating system. Refer to the specific thermostat manual for detailed programming instructions.
Basic Operation (CDFR-003 Rotary Thermostat):
- 電源オン/オフ: Press the power button (usually marked with a circle and a vertical line) to turn the heating system on or off.
- 温度調整: Rotate the dial to set your desired floor temperature. The numbers on the dial correspond to temperature levels.
- 省エネ: To optimize energy consumption, consider lowering the temperature setting during periods when the room is unoccupied or overnight.
For digital programmable thermostats (like the one shown in Image 4.3), consult its dedicated manual for setting schedules, modes, and advanced features.
7. メンテナンス
The Nexans millimat/100 N-HEAT electric underfloor heating system is designed to be maintenance-free once installed. There are no moving parts or fluids to replenish.
一般的なケア:
- Keep the thermostat clean and free from dust. Wipe with a dry cloth.
- Avoid placing heavy, insulated objects directly on the heated floor for extended periods, as this can lead to localized overheating.
- Do not attempt to repair the heating mat or thermostat yourself.
8。 トラブルシューティング
If you experience issues with your underfloor heating system, consider the following basic troubleshooting steps. For complex problems, always contact a qualified technician.
よくある問題:
- 熱なし:
- Check if the thermostat is powered on and set to a temperature above the current room/floor temperature.
- Verify the circuit breaker for the heating system has not tripped.
- Ensure the floor sensor is correctly connected and functioning (if applicable).
- 一貫性のない加熱:
- Ensure no large, heat-insulating objects are covering parts of the floor.
- Check thermostat settings for any programmed schedules that might be causing temperature fluctuations.
- Thermostat Display Not Working:
- Check power supply to the thermostat.
- If the thermostat is battery-powered, check or replace batteries.
If these steps do not resolve the issue, contact a certified electrician or Nexans customer support.
9. 保証とサポート
For warranty information regarding your Nexans millimat/100 N-HEAT electric underfloor heating system and CDFR-003 thermostat, please refer to the documentation provided at the time of purchase or contact your retailer. Specific warranty terms and conditions may vary.
カスタマーサポート:
If you require technical assistance, have questions about installation, or need to report a fault, please contact your authorized Nexans dealer or visit the official Nexans webサポートの連絡先の詳細については、サイトをご覧ください。





