... cold water systems, including centralized heat-supply system,2 the heating system, building, including floor, ... 1, pay attention to the pipeline using coefficient C (i.e. general safety coefficient) : general ... long-term continuous make temperature, optional < 70 degrees C = 1.25, On important occasions, and long ... temperature for a long time, can choose C = 150,2, for more than 40 degrees Celsius (cold ...