】 【Weak current College on wator suggestions.

<br> As China's housing policy, energy and energy efficiency in buildings, and other aspects of the reform step down, living concept has people from a single focus on usability, functionality, and other low-level simple requirements to comfort, environmental protection and .intelligence, and other high-level requirements change. After more than ten years of research and extension, low-temperature radiant floor heating system in the North region has a large development. However, due to it, after all, the traditional heating systems in .different ways, with maintainability (floor heating, heating pipe laying on the floor, when problems arise, the need to cut large ground maintenance, give users a trouble and loss), therefore, the author of an individual engaged in the construction of floor radiant .heating, radiant floor heating construction often occur with suggestions made in order to be able to peer help.  <br> 1 the construction of <br> <br> Radiant floor heating systems of the construction process is very important, but under construction due .to improper operation, technology does not cross the border and so causes quality accident not uncommon, therefore, radiant floor heating systems in the construction of the following links should be special attention.  <br> <br> 1.1 laying pipe, spacing errors should .be "10mm; through expansion joint loop should wear bushings. Pipe bend radius should be less than the relevant product standards in the provision of the minimum value, so as to avoid the poor or damaged the pipeline.  <br> <br> 1.2 .in fixed pipe, pipe system should be fastened so that its horizontal and vertical positions remain unchanged; the laying of cast-in-floor before and after the pipe vertical displacement should not be> 5mm; plastic pipe fixed spacing based design description; no requirement .if the design drawings, the spacing is not suitable for pipes; £ ¾ £ ¾ 500mm 900mm bending the ends of the pipe and shall be fixed in points.  <br> <br> All the heating room 1.3 walls, pillars and floors ( .ground), plate intersection of laying corner insulation tape. Corner insulation Strip should be higher than the fine decoration ground elevation (pending fine decoration floor construction is completed, cut above the floor surface above the border insulation tape).  <br> <br .> 1.4 in heating coil top or bottom wire should be laid out. The literature on radiant floor heating indoor temperature field and floor temperature field do a more detailed study, in order to reduce heat losses in not valid heating coil and exterior wall surrounding below are .insufficient to have insulation, thermal insulation layer selection of polystyrene foam, thermal insulation layer should dislocation, seamless mosaic. In order to enhance the overall strength of thermal insulation materials, and easy to install and secure the heating pipe, during construction, insulation layer surface .to lay a layer of wire mesh. In addition, from engineering practice, the Chief Park thermal relatively strong, and tube and pipe cooling between weak, in order to reduce the strength of the apparent cooling in the heating coil of wire mesh upper for laying ., uneven floor surfaces of the heat. At the same time, the steel wire mesh also enhances the crack resistance of the floor.  <br> <br> 1.5 installation water tap / set, in accordance with the drawings check points / set water .location. When the standpipe system is not clean, not to connect to it.  <br> <br> 1.6 plastic coil of pressure and drainage. After installing hydraulic pressure test system is the construction of water supply and sewerage and heating engineering construction quality .approval standard (GB50242-2002) as a project to install a qualified basic requirements for floor heating systems are no exception. Plastic coil for laying out, fill in the concrete floor construction and maintenance, the pipeline must be ≥ 0.4MPa pressure and check the .pressure gauge indicating the conditions to prevent the pipeline was damaged. It is important to note that after the completion of maintenance should be carried out again, according to the water pressure test system to fill layer and pipes filling pressure and the system pressure test should be .conducted the second hidden acceptance procedures. Implicit check content should write out the protection layer of material, thickness, and pipe-filling pressure. At present, some construction projects only in plastic pipe fixed on completion of the hydrostatic test, complete a subtle works of .intermediate acceptance, and ignore the second hidden acceptance procedures, this practice is not correct. In addition, radiant floor heating system pressure test is not like other heating and air conditioning system, open outlet valve and exhaust valve system can be completely drain off the water ., but a significant part of the water, the heating coil in the Shui cannot leak out, especially in winter, if the heating coil water cannot be completely discharged in time, most likely because of water ice and destroy the entire heating coil (in fact ., such phenomena in practical projects from time to time), so irrigation in pressure or should be used in compressed air after the heating coil in the Shui full blown out to antifreeze bad lines.  <br> 2 strengthen the management of the construction process ., avoid floor not hot or hot and cold are not <br> <br> Low-temperature radiant floor heating system debugging, frequent floor not hot or hot and cold are not, cause this phenomenon not only includes the design reasons, such as design .heat load is less than the actual thermal loads, heating coil spacing is too big, not too long, and loop pipe in heating loop exhaust devices, causing choking noises and other reasons, in construction project management, the quality is poor, workers in construction ., as well as finished products protect wild inadequate measures is not hot or hot and cold are not the main reason. Therefore, in the construction process to the following areas to strengthen management.  <br> <br> 2.1 construction technicians must be strictly .<br> <br> Strengthening the management of the whole construction process, the heating coil installation, response materials carefully check the appearance and joints, and clear the pipes and fittings and the dirt and debris.  <br> <br> 2.2 during .installation, the heating pipe is forbidden to climb upon, as a support, heavy oppression and placed high temperature objects and radiant floor heating works should not be crossed with other construction jobs to avoid damage to the heating coil.  <br> 2.3 and construction .professionals closely, levelling uneven ground, prevent pipe, exhaust impeded. Laying of floor heating coil, should set clear flag.  <br> <br> 2.4 is strictly forbidden without permission in floor or roof (lower household) hole, make sure not .to damage the heating coil.  <br> <br> 2.5 in floor radiant heating system operation and management process, managers should always pay attention to weather changes, especially in the heating of the early and late, make sure that the system for heating .is not frozen.  <br> <br> 2.6 in order to ensure that ground in heating engineering remains normal, no distortion, no crack, when room span> 6m should be ground after the expansion joints, slit width to ≥ 5mm is .appropriate, and heating coil passing through the expansion joints, you should set length ≥ · adjustment flexible casing.  <br> 3 closing <br> <br> Low-temperature radiant floor heating system is an extremely promising heating method, which in terms .of energy conservation, indoor temperature field of distribution, or in the comfort, indoor appearance, household metering and so are more traditional heating form has a distinct advantage, but to make the radiant floor heating system play its advantages, and avoid the disadvantages that make .it faster and more widely accepted this new type of heating, peer professionals who work together, both from a theoretical studies, engineering design, construction, and operation management and other aspects of a more perfect, the promotion of this new type of heating system development .. <br> <br>.