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GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 11
D1
D2 Z1
Z2
DC1- DC1+
GND R K2 K1
ST+
ST-
DC2- DC2+ YK2
YK1 L3 G L1
SW2 SW1
Fig. 5-3
D1, D2:
Power input, polarity-insensitive.
Z1, Z2:
FACP loop input terminal, polarity-insensitive.
DC1-, DC1+:
Extinguishing start terminal, to gas extinguishing relay module.
GND
,
R:
To C-9318 Gas Extinguishing Warning Indicator. A 4.7K/0.5W cable-checking
resistor is to be connected to the end.
K2, K1:
To sounder strobe
DC2-, DC2+:
Reserved for future use.
YK2, YK1:
To gas extinguishing relay module.
L3
,
G
,
L1:
To field C-9317 Emergency Gas Override Control. A 4.7K/0.5W
cable-checking resistor is to be connected between L3/G an L1/G respectively.
ST+, ST-:
Gas Stop Indicator, polarity-sensitive. A 4.7K/0.5W cable-checking resistor is
to be connected to the end.
SW1, SW2:
To the switch of the door to the protected zone, polarity-insensitive. It
should be normally-closed signal that is broken when the door is open. A 4.7K/0.5W
cable-checking resistor is to be connected to the end.
Note: When multiple C-9318 Extinguishing Warning Indicators are connected in
series, the furthest end-of-line resistor should be connected.
5.4 Wiring
(1) 1.0mm
2
or above twisted pair flame-retardant insulation cables for signal loop Z1,
Z2.
(2) 1.0mm
2
or above RV cable for L3, G, L1, K1, K2, YK1, YK2, SW1 and SW2.
(3) 1.5 mm
2
or above RV cable for R and GND.
(4) 2.5mm
2
or above RV cable for power cable D1, D2, DC1+ and DC1-.
5.5 System Connection
(1) The extinguishing device and pressure switch of each protected zone (connecting
with C-9329 Gas Extinguishing Relay Module) are respectively connected to the
corresponding terminals on the control panel by two-wire. Cabling of different
zones should not be mixed.
(2) Gas extinguishing warning indicator should be connected to corresponding
terminals of the control panel by two-wire mode. Cabling of different zones should
not be mixed. When there are two Indicators in the same zone, they can be
connected in series.
(3) Emergency gas override control is connected to the corresponding terminals of the
control panel by three-wire mode. Cabling of different zones should not be mixed.