Central heating installation safety system - has combination of twin pipe and single pipe type operational modes

摘要

Safety system improvement for central heating installation in which pipework system is laid out in such a manner that it combines the working characteristics of the Twin Pipe system and the conventional single pipe siphonic system. Pressure and temperature equalisation of the flows to the radiators is utilised and it is found that the frictional forces to be overcome during oscillation of the hot and cooled media are considerably less using this system than in the conventional single pipe system.