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GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 5
I/O Board 6
I/O Board 1
Main Board
Zone Control
Board 6
Zone Control
Panel 1
Filter Board
Manual Disable
Reset
Power Switch
D1 D2 Z1 Z2
RTB416-00-01-0
Terminals
1
0/2- 3
Terminals
L
ow
er
T
erm
ina
ls
Gas Stop Indicator Board
RTB404-01-01-0/2-M3
Terminals
L
ow
er
T
erm
ina
ls
U
pp
er
T
e
rm
ina
ls
Note: Please refer to marks on the terminals and I/O board for connection of XT1 with
terminals.
Fig. 4-4
4.1.2.1 Main Board
Main board is the main control part of the panel, which is connected with the signal
2-core cable and zone control boards through respective terminals. Its structure is
shown in Fig. 4-5.