1, the return pipe is clogged
Heating in the use of a long time, the return pipe appears to be clogged phenomenon. This thing will need to clean the filter, the filter in the floor heating system is mainly responsible for filtering impurities in the pipeline, if the filter is clogged, it is easy to appear floor heating is not hot.
2, insufficient circulating power, insufficient water pressure.
The inlet pipe and return pipe will have a certain water pressure. Rely on water pressure to make hot water circulation. If the water pressure is insufficient, the return pipe can not flow into the hot water, there will be the phenomenon of heating return pipe is not hot.
3, the return pipe slope is not enough.
If the underfloor heating loop pressure is insufficient, it may lead to poor water circulation and the occurrence of hot inlet pipe and cold return pipe.
Solution: you can find the property, you can also find the heating department. You can add a circulation pump to solve the problem of poor circulation (depending on the situation).
4, cold each circuit in the pipeline/load is not average, that is to say that the hot one all the way either short pipeline, or less heating, hot water directly to the near road. The solution is to exhaust and then measure the water pressure, after which you can turn off the hot all the way back to the valve.
5, piping and heating did not exhaust, the return pipe valve did not open.
In the process of geothermal first run, due to pressure and water resistance in the pipeline is prone to gas plugs, resulting in the supply and return water does not circulate, the temperature is not equal, it should be carried out road by road exhaust. Heating in the steel column full of water in the pipeline, there will be a certain amount of gas, which may lead to "floor heating into the water. Open the exhaust valve to exhaust directly until the release of hot water.
6, the heating appeared hot and cold
Individual friends reacted to the installation of floor heating at home, some rooms hot, some rooms are not hot or hot and cold, this situation is mostly due to the pre-designed irrationality or improper construction.
The solution, experienced technicians can modify, adjust the floor heating loop to solve this problem.
Heating inlet pipe hot return pipe is not hot solution is as follows:
1, heating bleed specific steps:
①Preparation tools: pliers, wrenches, towels.
② first need to find a waterproof place, the total **** each have a bleeder buckle, above the inlet a, below the return pipe a. If you really can't find it, you can try to touch it, generally, hot is the inlet pipe, cool is the return pipe.
3 test is not due to no exhaust caused by the return pipe is not hot.
First put the gas into the water pipe, in the deflation of the time to be guarded, because of the deflation of the hose may appear to jump, and then use pliers to open the valve, with a prepared towel, wrapped around the valve, because in the deflation of the time there may be some water overflow. Prevent water from leaking out.
④Put the gas back to the pipe, before deflating to close the main valve of the return pipe, usually green or red handle, turn 90 degrees to close automatically. Degassing process and water intake, just need to connect the tube to the following bleeder valve can be.
⑤ Put the single water pipe of each house one by one, usually 3-4 per household. The specific operation is to close the main return valve. And close the valves of each single pipe, leaving only one of them for return. Just repeat this for each single pipe.
6 What is the case under the gas release success. The main thing is that there is no sewage and gas spewing out of the inside. Reach a basic stable state.
⑦ Finally open all the water valves. Including the main return pipe, each single pipe. Close the two bleeder valves, using pliers, but not too hard, or it is easy to cause damage to the valve.
Note, be sure to close the two bleeder valves, using pliers, but not too hard, otherwise it is easy to cause valve damage. Water leakage problems, be sure to immediately close the main inlet pipe of the residence valve, you can cut off the water supply. Then take other measures.
2, pipeline cleaning
Floor heating for a long time in the pipeline is easy to retain scale, resulting in floor heating pipeline embolism, resulting in floor heating does not heat the situation. Water heating is generally used 4-5 years need to be cleaned once.
Shut down the heating of the total return valve and each loop adjustment valve, first of all, open a regulator valve on the manifold, and then open the manifold back to the bar on the exhaust valve bleed exhaust, exhaust air and then close this valve, while opening the next way valve. And so on, the air in each way are clean and then open all the valves, the system is officially running. One by one after the exhaust pipe open the valve after the water flow can be heard.