Ice formation preventing method for line system utilized for transporting e.g. drinking water in underground car parking, involves circulating liquid in one of two branch parts to other branch part

摘要

The method involves arranging a line system (10) in such a manner that a liquid in a branch part (2) is circulated to a branch part (1), where the branch parts are provided in the line system. The monitoring is made whether the ambient temperature in a section (A) is lesser than a predetermined threshold temperature, where the section is provided in the line system. The liquid in the branch part (2) is circulated to the branch part (1), when the ambient temperature is lesser than the predetermined threshold temperature. Independent claims are also included for the following: (1) a line system comprising two parts (2) a method for retrofitting a line system.