1, requirements of installation specification for circulating system
Before installation: Before formally laying the ground facilities, first confirm the design drawings, clean up the site and make good preparations. Then install the temperature control pipeline and oil-water separator. These processes are also important, including slotting and assembly. These are all related to whether the floor heating can be used normally after, and the installation must be standardized correctly.
Preparation: Clean up the construction site after entering the site, and determine the installation position of the main engine (wall-hung boiler) and water separator/water collector to prepare for the later construction.
Comprehensive installation: after the temperature control line is buried and the water separator/water collector is installed in the designated position, the ground insulation layer and heating pipeline can be laid. Although these parts seem not difficult, in fact, some small details are very important. For example, after the laying of ground pipelines, acceptance tests should be carried out to ensure normal use.
Laying thermal insulation layer: cut the thermal insulation layer according to the actual size before laying, and leave a gap for the pipeline when laying. First lay insulation board, then lay reflective film. When laying, the insulation board should be attached tightly, and the edges of the two reflective films should also be glued with adhesive tape. Then lay a steel wire mesh on it, and the edges of the two steel wire meshes should be connected with special tie straps. Finally, the pipeline can be installed.
Laying pipeline: In order to prevent heat loss, it is necessary to add a special insulation sleeve to the pipeline from the water distributor/water collector to the installation room. Connect the insulated pipe to the water separator/water collector, and connect one end of the pipe to its temperature control valve. When laying the pipeline, the corner of the pipeline must be carefully tied with tie tape, and then fixed with special plastic card to prevent looseness. After the pipeline is laid, put this end of the pipeline on the casing and send it back to the water separator for fixing, so that all the pipelines for floor heating are laid.
Pressure test: inject cold water into the laid pipeline. After the pipeline is filled with water, the pressure of 10kg is injected with a special press. After sealing for 24 hours, if the pipeline pressure is not lower than 6kg at this time, it means that the pipeline has no leakage and can be used normally.
2, circulation system installation steps
Check and clean the leveling layer → install the distribution manifold, locate the wall-hung boiler → fix the corner insulation belt → lay the insulation layer → test the pressure of the floor heating coil → lay the floor heating reflective film → connect the floor heating coil with the distribution manifold → connect the floor heating pipe with the distribution manifold → lay the concrete filling layer → test the water pipe → spread the leveling layer → lay the ground material → supply return pipe.
3, liquid circulation system installation quality acceptance standard
Please ask the master to carry out water injection and pressure test when closing the house. Generally, the national regulation is 6-8, but many people just need to press 3-4 to save trouble. You should pay attention to this point, and then observe whether the pressure relief is serious within half an hour and whether there is water seepage at the pipe joint of the distribution manifold. Generally 1 hour will stabilize at a pressure value, so there is no problem.
4. Frequently asked questions about installation of circulating system.
(1) Need cleaning?
Water accumulates in geothermal pipelines all the year round, and the water contains microorganisms and impurities. Under certain conditions, biological slime will be produced and attached to the inner wall of geothermal pipe, which will increase thermal resistance and affect heat transfer. Cleaning pipes regularly will make floor heating more energy-saving and comfortable. However, if water purification equipment is installed, it will not only ensure the safety and hygiene of domestic water, but also protect domestic wading equipment. The improvement of floor heating water quality will also greatly extend the cleaning cycle of floor heating coil.
(2) whether the temperature can be controlled
The temperature can be controlled, adjusted and switched in different rooms. If the floor heating thermostat is installed, you can set the water temperature, room temperature and normal operation. Even a week of programming, reservation control. Not only intelligent and comfortable, but also effective energy saving and cost control.
(3) Requirements for ground materials
Floor heating system requires floor decoration materials to have low thermal resistance, low water absorption and small expansion deformation. Ceramic tile and marble floor materials are particularly suitable, followed by solid wood composite floor heating.
(4) Do you need a waterproof layer?
When the local heating coil is located on the floor of a humid room (bathroom, kitchen, swimming pool, etc.). ), the filling layer should be waterproof.
5. Precautions for installation of liquid circulation system.
(1) The construction of floor radiant heating system should avoid overlapping construction with other types of work, resulting in difficulties in coordination or unclear responsibilities, delaying the construction period and ensuring quality. Users need to communicate with the decoration company in advance to coordinate the work coordination process.
(2) Hydropower transformation should be completed before the floor heating system construction comes into play. Before the installation of the floor heating system, it is necessary to ensure that the construction of water and electricity pipelines on the construction site is completed, and the kitchen and bathroom are tested and accepted. The ground in the construction area is flat and clean, and there are no exposed steel bars, water and electricity pipelines and any equipment, materials and sundries that affect the construction. Detailed+
Electric floor heating device
1, electric floor heating installation specification requirements
(1) Before installation
It is necessary to prepare the field measurement, draw the laying effect diagram, draw the laying electrical circuit diagram, prepare the construction tools, and prepare the construction accessories.
(2) During installation
Dry-laying of floor heating: If dry-laying is adopted, the heating coil or heating cable is installed in the groove of aluminum insulation layer, and the floor is directly laid on it.
Floor heating and wet paving: If wet paving is adopted, it refers to the installation method that heating coils or heating cables are covered and protected with a concrete layer, on which floor tiles or stones can be laid.
2, electric floor heating installation steps
(1) Before installing electric floor heating, check the insulation resistance of the cable to see if there is an open circuit or a short circuit. Every cable used for floor heating installation needs to be tested before laying.
(2) laying insulation board, usually polystyrene board, the ground should be clean and tidy before laying, and the insulation board should be neat when laying, and the gap between each board should not exceed 4 mm When installing floor heating, insulation board must be laid, and its main function is heat preservation. If it is not laid, the consequences can be imagined.
(3) The floor heating reflective film is usually aluminum foil reflective film, and its material-polyester vacuum aluminized film, which is laid on the insulation board, must be flat and its main function is heat transfer.
And (4) laying a floor heating steel mesh, wherein the floor heating steel mesh is laid on the reflective film, and each steel mesh is fixed by a tie. The main function of steel wire mesh is to fix the heating cable and prevent the cable from collapsing and changing its position in the later stage.
(5) When laying a heating cable, it is necessary to identify the cold hot wire. The cold wire is connected with the thermostat and can be cut off, while the hot wire is a heating element and cannot be cut off when laying. When laying, use a card to fix it, and then install it according to the spacing given in the design drawing to complete the laying.
(6) After laying the heating cable, the insulation resistance and nominal resistance of the electric floor heating should be tested again. Through the test, we can find out whether the cable is damaged when installing electric floor heating. If there is any problem, we will solve it as soon as possible.
(7) Install the thermostat. Before installing electric floor heating, determine the position of thermostat in advance, and reserve wires and boxes. The general installation position is similar to the light switch, which is determined according to the indoor actual situation, and then the cement is backfilled to protect and debug the finished product.
3, electric floor heating installation quality acceptance standard
(1) Hydrostatic test procedure for floor heating
(1) Before the water pressure test, safe and effective fixing and protection measures shall be taken for the pressure test pipes and components. The water pressure test shall be 1.5 times of the working pressure, and the minimum shall not be less than 0.6Mpa.
(2) During the water pressure test, water is injected slowly through the water separator, and the air in the pipeline is discharged at the same time. After filling with water, conduct water tightness inspection.
(3) Slowly boost the pressure with water, and the boosting time shall not be less than 5 minutes. After boosting the pressure to the working pressure, stabilize the pressure for 5 minutes, observe whether there is any leakage, make up the pressure to the specified test pressure, and the internal pressure drop shall not exceed 0.03Mpa within 10 minute.
(4) When conducting water pressure test in winter, practical anti-freezing measures should be taken.
(2) Experimental steps of floor heating pressure
(1) Before air pressure test, safe and effective fixing and protection measures shall be taken for pressure test pipes and components. The air pressure test shall be 1.5 times of the working pressure, and the minimum pressure shall not be lower than 0.6Mpa.
(2) Use an air compressor and gradually pressurize it through a water separator to check the air tightness.
(3) When the pressure rises to the working pressure, stabilize the pressure for 5 minutes. If there is no leakage, the pressure can be replenished to the experimental pressure, and the internal pressure drop is less than 0.05Mpa within 5 minutes.
4, electric floor heating installation frequently asked questions
(1) The floor heating will be laid after the completion of water and electricity, so the uneven ground should be leveled. If it is not uniform, the heat of electric floor heating will not be emitted, which will affect the heating effect at home, and will also lead to excessive power loss and bring economic losses to yourself.
(2) When the electric floor heating is installed together with the house decoration, there will be more sundries during the construction, which will affect the construction of the floor heating by the construction personnel, and some faults may occur due to improper installation of the electric floor heating. Therefore, the construction environment of electric floor heating is very important.
(3) When installing electric floor heating in the bathroom, we should consider the humidity of the bathroom and do a good job of waterproofing. The height of the waterproof wall is designed as 1.8m to ensure the waterproof effect of the bathroom. Keep the bathroom clean when using it.
5, electric floor heating installation matters needing attention
(1) Before installing the electric floor heating, check the insulation resistance of the cable for open circuit or short circuit. Every cable installed in floor heating needs to be tested before laying.
(2) Start laying insulation board. Before laying, the ground should be cleaned up. Insulation boards should be laid neatly, and the gap between each board should not exceed 4mm, which plays the role of heat preservation.
(3) The floor heating reflective film is generally laid with aluminum foil reflective film, which should be flat on the insulation board and have the function of heat transfer.
(4) When laying the floor heating steel mesh, each piece of steel mesh shall be fixed with a cable tie. The main function of steel mesh is to fix the heating cable and prevent the cable from collapsing and changing its position in the later period.
(5) Laying of heating cable: When laying heating cable, it is necessary to recognize cold and hot wires. The cold wire is connected to the thermostat and can be cut off. The hot wire is a heating element and cannot be cut off during laying. It needs to be fixed with cards and laid according to the spacing of design drawings.