Loop Wiring - Ziton ZP3-ECU Installation And Commissioning Manual

Chapter 1: System wiring

Loop wiring

Loop connections are provided on the main board of the ECU and terminals are
provided for the respective loop screens. Screens must be properly connected at
the fire panel.
Figure 2: Loop wiring connections
Earth connection
The ECU must be connected to a secure earth. Good wiring practice should be
followed and the earth connection should be kept as short as possible. Earth is
provided on pins 25 and 26, which makes connection to the chassis.
4 ZP3-ECU Extinguishing Control Unit Installation and Commissioning Manual