Architecture pressure charging temperature reduction heating apparatus

The invention relates to an architecture device for pressurizing, reducing temperature and supplying heat, belonging to the heating ventilation air conditioner technical field. In order to allow radiant heating or temperature reduction heating of a low-temperature hot water ground with insufficient outdoor heat source pressure of the architecture to operate normally, a pressurizing heat medium pump (2) and reduced pressure pipeline sections (10, 13 and 14) are respectively connected in series between an indoor back heat medium supply main pipe and a temperature reduction heat supply system; inlets of the reduced pressure pipeline sections 'being favorable for forming a pipe riser of running water in a membrane fluid state' are connected to the top end of a system public back heat medium pipe riser (CNH1), thereby solving the problem of insufficient external heat source pressure of the system, establishing a limited and sealed operating condition of the heat supply system, maintaining normal operating pressure