The installation of indoor heating pipeline starts from the main pipe at the thermal entrance, first underground main pipe, then main pipe and vertical main pipe.
The parts and pipe sections of the supervisor have been processed and assembled properly and installed in place according to the drawings. After the installation of the main pipe, the pipeline pressure test shall be conducted in stages, with the test pressure of 1.0MPa.
The heating branch pipe shall be constructed at the same time as the radiator installation. After installation, each room shall be pressure tested by return pipe, then washed and drained after passing the test.
The slope of pipeline installation shall meet the following requirements:
The gradient of hot water heating pipes, steam pipes and condensate pipes with gas and water flowing in the same direction should be 3‰ and not less than 2 ‰;
The gradient of hot water heating pipeline with gas-water countercurrent and steam pipeline with steam-water countercurrent should not be less than 5 ‰;
The slope of radiator branch pipe should be 3‰, and the slope direction should not be less than 2‰, which is beneficial to drainage. ?