Changzhou 2D Carbonene Technology Co., Ltd.
Building 12A, No. 8 Lanxiang Road, Wujin Economic Development Zone, Changzhou
City
Graphene Underfloor Heating Installation Manual
Floor Leveling
- Conditionsfor Laying Ceramic Tiles or Marble
The floor must be kept flat with a level difference of less than 1-1.5 cm. If conduits or water pipes are routed on the floor surface, grooves must be cut into the floor to embed them, and the surface must be restored to be flat. The conduits must not protrude above the floor level. The floor must be dry, clean, free of construction debris, and clear of any clutter.
- Conditionsfor Laying Wooden Flooring
The floor must be kept flat with a level difference not exceeding 0.2-0.4 cm. If conduits or water pipes are routed on the floor surface, grooves must be cut into the floor to embed them, and the surface must be restored to be flat. The conduits must not protrude above the floor level. The floor must be dry, clean, free of construction debris, and clear of any clutter.
2. Product Safety Requirements
- The system’s power distribution must be in place. The main power line and branch circuit conduits must be pre-embedded, and all electrical connections
- Exteriordoors and windows must be
- The construction site must be clean and tidy, free of debris.Any objects on the floor surface that could affect the installation, such as nails, steel bar ends, or cement lumps, must be completely removed.
- During the floor heating installation, non-construction personnel are not allowed to enter the room and step on the heating system. It is not advisable to performcross-trade work simultaneously with the heating installation.
- All ground wiring or pre-reserved equipment for other systems must be completed before the floor heating system installation begins.
- In all the above procedures, any part involving electrical calculations and construction must be handled by a professional electrician to ensure user safety.
3. Installation Drawings
All floor heating installations must be accompanied by complete installation drawings before construction begins. These drawings, confirmed by the client, provide detailed instructions for the installation personnel. They include: the placement of the heating film, the routing of wires, the location of thermostats, and the distances of the heating film from walls, cabinets, beds, etc.
The installation drawings must include a configuration list. This list should contain the room name, area, installation power, and the names and quantities of the main installation materials, such as heating film (differentiated by model), thermostats, temperature sensor cables, T-shaped cables, connection cables, film extension cables, overheat protection cables, etc.
The installation drawings are the basis for the installation and must be archived for records.
Material Description
Main Materials:
From left to right, top to bottom: Graphene heating film, T-shaped cable, Connection cable, Thermostat, Temperature sensor cable
Note: The materials used vary depending on the installation method. Dry installation for wooden floors uses XPS boards and may require a moisture-proof mat and aluminum plates. Wet installation with cement uses edge insulation strips, XPS boards, PET protective film, PE film, and silicon crystal mesh, and may require a moisture-proof mat. The wooden floor with overheat protection plan requires an overheat protection cable.
Materials and Key Technical Parameters for Heating Film Installation
| Material Name | Main Parameters and Performance |
| Extruded Polystyrene (XPS) Board |
|
| PET Film | Thickness > 300um |
| Silicon Crystal Mesh |
|
| Edge Insulation Strip |
|
| Aluminum Plate | Thickness > 0.5mm, Dimensions 50*100cm |
| PE Film | Total thickness ≥ 80um |
| Moisture-proof Mat |
|
Installation Plans
There are three main installation plans: the dry installation process for wooden floors, the wet installation process with cement, and the wooden floor + overheat protection process. Laying wooden floors on top of cement is also considered a wet installation process, as is using gypsum instead of cement. Different processes use different installation procedures and materials.
Dry Installation Plan for Wooden Floors
Installation Schematic
Installation Process
Installation De
- Clean the Original Ground
Ensure the ground is free of debris and protruding objects. The level difference must be less than 0.4 cm.
- *Lay Moisture-proof Mat (Conditional)
If the installation is on the ground floor or in an area in contact with soil, a layer of moisture-proof mat must be laid first. The mat should cover the entire room, and the seams should be sealed with tape.
- Lay Insulation Boards (XPS)
Cover the entire room with insulation boards. When laying, the gap between boards should be less than 5mm, and the seams should be sealed with transparent tape. The surface of the boards must be flat; avoid using many small pieces to patch areas. The insulation board thickness should be 20mm. If on the ground floor, the thickness should be increased to 30mm. Leave a 3-5mm expansion gap between the boards and the walls. For larger rooms, leave a 5mm expansion joint every 6 meters.
- InstallTemperature Sensor Cable
The connection end of the sensor cable is passed through the conduit and connected to the thermostat. The probe end is placed under the nearest heating film. The position of the heating film is determined by the design drawing. A shallow groove should be cut into the XPS board to house the sensor probe and its wire to prevent the heating film from being uneven.
After placing it, secure the sensor cable with transparent tape.
- Lay the Heating Film
Before laying, sweep the XPS boards to ensure there is no debris or particulate matter on the surface.
Lay the heating film according to the placement and orientation specified in the design drawing. Adjust the spacing between the heating film and the walls, as well as between the film strips. Secure the heating film with tape.
Be careful during installation to prevent tools from damaging the film. Inspect the film after laying.
- Connect Cables and Thermostat
Place the T-shaped cables according to the design drawing and connect them to the heating film. When connecting the male and female connectors, push them in completely and tighten the cap securely.
The T-shaped cable is connected to the thermostat via a connection cable, using male-female connectors.
The connection cable is passed through the conduit to the thermostat. When connecting to the thermostat, pay attention to the live and neutral wires (Blue is Neutral, Brown is Live). The same applies when connecting the 220V power supply to the thermostat.
After connecting the cables, use a utility knife or a grooving tool to cut channels in the XPS board to embed the T-shaped cables and connection cables. After embedding, secure them with tape.
- On-siteTesting (First Test)
After powering on, use an infrared thermometer to check the temperature of the heating film to determine if it is working correctly and heating evenly. If there is poor heating, check for loose connections.
With the power on, use a clamp meter to measure the leakage current of each thermostat circuit. The leakage current for each circuit should be less than 2mA. If it is greater than 2mA, check for any damage to the film caused during installation.
With the power off, use a multimeter to record the resistance of each heating film group to verify it is within the design range.
- Lay PET Film
Lay the PET protective film over the heating film to protect it. The seams between PET film sheets should be sealed with tape. The total thickness of the PET film must be greater than 300um. Before laying the PET film, clean the surface of the heating film to ensure it is free of any debris or particles.
- *Lay Heat Spreader Plates (Optional)
Laying heat spreader plates is an optional step. Using them can balance the temperature difference between film strips and also mitigate overheating issues caused by small-area coverings (large-area coverings are still prohibited).
The heat spreader plates (aluminum plates) should be thicker than 0.5mm, with dimensions of 50cm*100cm. They are placed between the
heating film strips, evenly distributed, with a gap of more than 5cm between plates. Secure the plates to the PET film with tape.
During installation, ensure the edges of the aluminum plates are smooth and free of burrs to prevent them from piercing the PET film.
- LayPE Waterproof Film
Lay the PE waterproof film to provide waterproof protection for the heating system. The PE film should cover the entire area, with overlapping sections secured with tape. The total thickness of the PE film must be greater than 80um. Before laying, clean the surface of the PET film to ensure it is free of any debris or particles.
- LayWooden Flooring
The wooden flooring should be installed immediately after the heating film installation is complete. Before laying the wooden floor, clean the surface of the PE film to ensure it is free of any debris or particles.
During the wooden floor installation, be careful to prevent wood chips, stones, or other particles from getting between the floor and the PE film. Be mindful not to damage the heating film with installation tools.
It is recommended to use reinforced laminate flooring specifically designed for underfloor heating, with a thickness not exceeding 12mm. (Solid wood flooring may develop gaps due to inconsistent moisture content and shrinkage. Excessively thick flooring will impede upward heat transfer, leading to slow heating and high temperatures in the heating film.)
- SecondaryTesting (Final Test
After the wooden floor installation is complete, conduct a second power-on test.
Use an infrared thermometer to check the temperature of the heating film to confirm it is working correctly and heating evenly. If there is poor heating, check for loose connections.
With the power on, use a clamp meter to measure the leakage current of each thermostat circuit. The leakage current for each circuit should be less than 2mA. If it is greater than 2mA, check for any damage to the film.
With the power off, use a megohmmeter to test the insulation resistance of the heating film. The reading should be greater than 2MΩ. If it is less than 2MΩ, it indicates that the heating film or wiring may be damaged.
Wet Installation Plan with Cement
Layer Structure
Installation Process
Installation Process Details
- Clean the Original Ground
Ensure the ground is free of debris and protruding objects. For laying floor tiles, the level difference must be less than 1 cm.
- Install Edge Insulation Strip
Apply edge insulation strips (approx. 1cm thick, 5cm high) around the perimeter of the room. The strips should be joined end-to-end, and the joints sealed with tape.
- *Lay Moisture-proof Mat (Conditional)
If the room is on the ground floor, a moisture-proof mat needs to be installed. The mat must cover the entire floor, and the seams should be sealed with tape.
- Lay Insulation Boards (XPS)
The insulation boards should be cut neatly, with joint gaps of less than 5mm. Seal the gaps with tape. The surface of the boards must be flat; avoid using many small pieces to patch areas. The insulation board thickness should be 20mm. If on the ground floor, increase the thickness to 30mm. Leave a 3-5mm expansion gap between the boards and the walls. For larger rooms, leave a 5mm expansion joint every 6 meters.
InstallTemperature Sensor Cable
The connection end of the sensor cable is passed through the conduit and connected to the thermostat. The probe end is placed under the nearest heating film. The position of the heating film is determined by the design drawing. A shallow groove should be cut into the XPS board to house the sensor probe and its wire to prevent the heating film from being uneven.
After placing it, secure the sensor cable with transparent tape.
Lay Graphene Heating Film
Before laying, sweep the XPS boards to ensure there is no debris or particulate matter on the surface.
Lay the heating film according to the placement and orientation specified in the design drawing. Adjust the spacing between the heating film and the walls, as well as between the film strips. Secure the heating film with tape.
Be careful during installation to prevent tools from damaging the film. Inspect the film after laying.
Connect Cables and Thermostat
Connect the cables according to the installation drawing. The physical T-shaped cable layout must match the design. When connecting the male
and female connectors, push them in completely, check for the presence of the silicone gasket, and then tighten the cap securely.
When connecting the connection cable to the thermostat, pay attention to the live and neutral wires (Blue is Neutral, Brown is Live). The same applies when connecting the 220V power supply to the thermostat.
After connecting the cables, use a utility knife or a grooving tool to cut channels in the XPS board to embed the T-shaped cables and connection cables. After embedding, secure them with tape.
On-siteTesting (First Test)
Conduct a power-on test of the heating film. Use an infrared thermometer to check the temperature and observe if it heats evenly. If there is poor heating, check for loose connections.
With the power on, use a clamp meter to measure the leakage current of each thermostat circuit. The leakage current for each circuit should be less than 2mA. If it is greater than 2mA, check for any damage to the film caused during installation.
With the power off, use a megohmmeter to test the insulation resistance of the heating film. The reading should be greater than 2MΩ. If it is less than 2MΩ, it indicates that the heating film or wiring may be damaged.
With the power off, use a multimeter to record the resistance of each heating film group to verify it is within the design range.
Lay PET Protective Film
Lay the PET protective film to protect the heating film. The PET film should cover the entire heating area, with overlapping sections secured with tape. The total thickness of the PET film must be greater than 300um.
Before laying, clean the surface of the heating film to ensure it is free of any debris or particles.
LayPE Waterproof Film
Lay the PE waterproof film to provide waterproof protection for the heating system. The PE film should cover the entire area, with overlapping sections secured with tape. The total thickness of the PE film must be greater than 80um. Before laying, clean the surface of the PET film to ensure it is free of any debris or particles.
Lay Silicon Crystal Mesh
The silicon crystal mesh should cover the entire area to be cemented. The mesh sheets should overlap by at least 5cm.
Pour Cement Screed Layer
The cement screed (or gypsum layer) should be poured promptly after the heating film installation is complete.
Mix the cement according to standard ratios. The water content should not be too high, and it must not contain sharp gravel. During pouring, do not puncture the PET film or the heating film. If the heating film is punctured, it must be replaced. The screed thickness should be about 3cm, and the
surface should be level to facilitate the installation of the upper decorative layer.
If using gypsum, mix it according to the specified ratio.
The screed layer requires a curing period. During this time, do not run the heating for extended periods, as it may affect the final strength.
The curing time depends on the screed material. For cement, a curing time of 28 days is recommended to achieve higher strength.
Lay Decorative Layer
Lay tiles or wooden flooring according to the desired decorative style. When laying wooden flooring over the cement layer, it is recommended to use reinforced laminate flooring specifically designed for underfloor heating, with a thickness not exceeding 12mm. (Solid wood flooring may develop gaps due to inconsistent moisture content and shrinkage.
Excessively thick flooring will impede upward heat transfer, leading to slow heating and high temperatures in the heating film.)
SecondaryTesting (Final Test)
After the final decorative layer is installed, conduct a second test of the heating system. Use an infrared thermal imager to check the heating status.
Installation Process for Wooden Floors + Overheat Protection Cabla
Installation Schematic
Installation Details
Clean the Original Ground
Ensure the ground is free of debris and protruding objects. The level difference must be less than 0.4 cm.
- *Lay Moisture-proof Mat (Conditional)
If the installation is on the ground floor or in an area in contact with soil, a layer of moisture-proof mat must be laid first. The mat should cover the entire room, and the seams should be sealed with tape.
- Lay Insulation Boards (XPS)
Cover the entire room with insulation boards. When laying, the gap between boards should be less than 5mm, and the seams should be sealed with transparent tape. The surface of the boards must be flat; avoid using many small pieces to patch areas. The insulation board thickness should be 20mm. If on the ground floor, the thickness should be increased to 30mm. Leave a 3-5mm expansion gap between the boards and the walls. For larger rooms, leave a 5mm expansion joint every 6 meters.
- InstallTemperature Sensor Cable
The connection end of the sensor cable is passed through the conduit and connected to the thermostat. The probe end is placed under the nearest heating film. The position of the heating film is determined by the design drawing. A shallow groove should be cut into the XPS board to house the sensor probe and its wire to prevent the heating film from being uneven.
After placing it, secure the sensor cable with transparent tape.
- InstallT-shaped Cable, Overheat Protection Cable, and Thermostat
Place the T-shaped cable and overheat protection cable according to the design drawing, then connect them. When connecting the male and female connectors, push them in completely and tighten the cap securely.
The T shaped cable is connected to the thermostat via a connection cable, using male-female connectors.
The connection cable is passed through the conduit to the thermostat. When connecting to the thermostat, pay attention to the live and neutral wires (Blue is Neutral, Brown is Live). The same applies when connecting the 220V power supply to the thermostat.
After connecting the cables, use a utility knife or a grooving tool to cut channels in the XPS board to embed the T-shaped cable, connection cable, and overheat protection cable. After embedding, secure them with tape. Ensure that no wiring protrudes above the height of the XPS board.
- Lay the Heating Film
Before laying, sweep the XPS boards to ensure there is no debris or particulate matter on the surface.
Lay the heating film according to the design drawing, ensuring the center of the heating film covers the overheat protection cable. Then, secure the
heating film with tape.
Be careful during installation to prevent tools from damaging the film. Inspect the film after laying.
- On-siteTesting (First Test)
After powering on, use an infrared thermometer to check the temperature of the heating film to determine if it is working correctly and heating evenly. If there is poor heating, check for loose connections.
With the power on, use a clamp meter to measure the leakage current of each thermostat circuit. The leakage current for each circuit should be less than 2mA. If it is greater than 2mA, check for any damage to the film caused during installation.
With the power off, use a multimeter to record the resistance of each heating film group to verify it is within the design range.
- Lay PET Film
Lay the PET protective film over the heating film to protect it. The seams between PET film sheets should be sealed with tape. The total thickness of the PET film must be greater than 300um. Before laying the PET film, clean the surface of the heating film to ensure it is free of any debris or particles.
- LayWooden Flooring
The wooden flooring should be installed immediately after the heating film installation is complete. Before laying the wooden floor, clean the surface of the PET film to ensure it is free of any debris or particles.
During the wooden floor installation, be careful to prevent wood chips, stones, or other particles from getting between the floor and the PET film.
Be mindful not to damage the heating film with installation tools.
It is recommended to use reinforced laminate flooring specifically designed for underfloor heating, with a thickness not exceeding 12mm. (Solid wood flooring may develop gaps due to inconsistent moisture content and shrinkage. Excessively thick flooring will impede upward heat transfer, leading to slow heating and high temperatures in the heating film.)
10. Secondary Testing (Final Test)
After the wooden floor installation is complete, conduct a second power-on test.
Use an infrared thermometer to check the temperature of the heating film to confirm it is working correctly and heating evenly. If there is poor heating, check for loose connections.
With the power on, use a clamp meter to measure the leakage current of each thermostat circuit. The leakage current for each circuit should be less than 2mA. If it is greater than 2mA, check for any damage to the film.
With the power off, use a megohmmeter to test the insulation resistance of the heating film. The reading should be greater than 2MΩ. If it is less than 2MΩ, it indicates that the heating film or wiring may be damaged.
VIII. Precautions
1. All electrical work during the floor heating installation must be performed by qualified professionals.
2. During the floor heating installation, it is strictly forbidden to carry out other types of work simultaneously (cross-trade work).
- During construction, do not step directly on the heating film.Actions such as pushing carts, placing scaffolding, or stacking tiles and other decoration materials on the heating film are strictly prohibited.
- Payattention to debris management during Prevent sharp objects from entering the heating film installation area. The area must be kept clean at all times.
- After the heating film installation is complete, the subsequent flooring installation should be arranged promptly.
- It is strictly forbidden to mix materials like cement or gypsum on top of the heating film.
- If the entire room is being fitted and there is no space to place materials, the installation can be done in sections.
- For high-traffic areas like entrances, the installation can be done after other areas are completed to prevent excessive foot traffic. Protect these areas by laying down corrugated cardboard.
- Throughout the installation process, pay strict attention to the site environment. Prevent particles from getting under or on top of the heating film. Clean the area frequently during installation.
This document was generated based on the provided manual.
Current Time: 2025-09-18