Cooling water is generally down into the back, backwash, the following inlet valve closed, the unit inlet should have a sewage valve or blind plate, open the blind or sewage valve, open the backwash valve, let the water from the unit
This differential pressure regulating valve is not all chilled water system must be installed, and some end system without temperature control solenoid valve, is not installed pressure regulating valve.
Chilled water system, that is, the evaporator inlet and outlet piping, there is a differential pressure regulating effect of the differential pressure regulating valve, but the differential pressure regulating valve is installed in the unit chilled water outlet pipe and chilled water pump backwater between.
The outlet into the condenser, from the inlet out to achieve the backwash effect.
