Fire hydrant, why the signal line?

Answer:

Your staff apartment fire hydrant button if not connected to the fire alarm host, will have to start the fire hydrant pump function, that is to say that no matter how the laying of lines, as long as the fire hydrant pump control cabinet in automatic mode, you can press the button to start the fire hydrant fire hydrant pump can meet the fire safety requirements.

The water pump starting control line is directly connected with the hydrant pump control cabinet. When the control cabinet is in the automatic mode, press the start button, and the hydrant pump starts directly. When the control cabinet is in manual mode, fire hydrant pump will not be started. The control cabinet here is not a fire alarm host.

There are two groups of fire hydrant buttons: signal line and hydrant pump starting control line.First of all according to the two sets of lines are parallel, the signal line belongs to the intelligent type, also called signal bus, each hydrant button has a corresponding address bus (some fire hydrant button without the address, but now not used) and fire alarm controller is connected.

Already built the fire signal line, fire hydrant pump is not started, the control line, did not say clearly. But if it is hydrant pump directly start the control line, of course, can meet the requirements. But could you say is the fire signal line signal line connected to the host with fire alarm, fire alarm can be connected after receiving your alarm signal fire hydrant button of the host, and then through the program control to start the fire hydrant pump.