GB 50242-2002 第10.4.4条
| **** | Low-temperature hot water radiant floor heating system: A hydrostatic test must be performed before the coils are concealed. The test pressure shall be 1.5 times the working pressure and not less than 0.6 MPa. Within 1 h of stabilization, the pressure drop shall not exceed 0.05 MPa, with no leakage. |