GST GST303 User manual

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
CONTENTS
1General ........................................................................................................................1
2Features.......................................................................................................................1
3Technical Specifications............................................................................................1
4Structure and Operation Principle............................................................................2
4.1 Structure.....................................................................................................................2
4.1.1 Front Panel..........................................................................................................3
4.1.2 Internal Structure.................................................................................................4
4.2 Operation Principle.....................................................................................................8
5Mounting and Commission .......................................................................................8
5.1 Unpacking and Inspecting..........................................................................................8
5.2 Mounting.....................................................................................................................9
5.3 Terminals..................................................................................................................10
5.4 Wiring.......................................................................................................................11
5.5 System Connection..................................................................................................11
5.6 Setting ......................................................................................................................12
5.6.1 Setting Address of Zone Control Board.............................................................12
5.6.2 Setting the Initial Address..................................................................................12
5.6.3 Setting Delay Time ............................................................................................13
5.6.4 Setting Control Command Output.....................................................................14
5.6.5 Setting Self-answer Mode.................................................................................14
5.7 Commission..............................................................................................................14
5.7.1 Commission of Delay Start................................................................................15
5.7.2 Commission of Immediate Start ........................................................................15
5.7.3 Commission of Fault Display and Report..........................................................15
5.8 Installation of Protective Cover................................................................................16
6Operation...................................................................................................................16
6.1 Powering-up, Self-test and Switching off.................................................................16
6.2 Basic Operation........................................................................................................16
6.2.1 Start ...................................................................................................................16
6.2.2 Stop....................................................................................................................18
6.2.3 Fault Indication..................................................................................................18
7Troubleshooting .......................................................................................................19
8Caution ......................................................................................................................19
Appendix 1: System Connection ...................................................................................21
Appendix 2: How to Install Protective Cover................................................................22
Appendix 3: How to Start and Stop the Control Panel ................................................24

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 1
1 General
GST303/GST306 Extinguishing Control Panel (hereinafter called the control panel) is
designed for driving the executing units of a fixed extinguishing system.
Except for 3 extinguishing zones less, and some minor differences in appearance and
structure, GST303 is the same as GST306 in operation. We’ll take GST306 as an
example.
2 Features
The control panel can be directly connected to the loop of GST intelligent fire alarm
control panels (FACP) that are able to control associated fire suppression equipment to
achieve automatic control of gas release.
It can also control gas release devices independent of the FACP. When the FACP is
not working properly, it can still control extinguishing devices through emergency gas
override control in field or Start and Stop keys on the control panel.
This control panel is also able to monitor and alarm on short circuit or open circuit with
externals cables
3 Technical Specifications
1) Capacity:
GST303: Controlling maximum 3 extinguishing zones (3 control units)
GST306: Controlling maximum 6 extinguishing zones (6 control units)
2) Delay Time: 0s～45s, adjustable by every 5s
3) Wiring:
a 2-core connection with FACP.
b Two-wire connection with the solenoid of cylinder, pressure switch
and gas extinguishing warning indicator.
c Three-wire connection with emergency gas override control.
d Two-wire connection with sounder strobe.
4) Power supply: Powered by external 20VDC~28VDC from intelligent PSU.
Total length from PSU to the control panel and from the control panel to
solenoid should not be over 100m, cross section not less than 2.5mm2.
5) Solenoid Interface:
Start output: By pulse or electric level mode. 5s for pulse mode; Voltage range:
18VDC～26VDC; Maximum current: 2A
6) Gas Extinguishing Warning Indicator Interface:
Start output: Voltage range: 18VDC～26VDC; Maximum current: 300mA
Load: Maximum 5 for each zone.
7) C-9316 Gas Stop Indicator Interface:
Start Output: Voltage: 18VDC~26VDC; Maximum Current: 100mA
Load: Maximum 3 for each zone.
8) Sounder Strobe Interface:

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Extinguishing Control Panel
Installation and Operation Manual
Page 2
Volt-free contact output; Maximum current allowed: 1A
9) Emergency Gas Override Control:
Load: Maximum 5 for each zone.
10) Standby Power Consumption≤10W
11) Operating Environment:
Temperature: 0℃～+40℃
Relative Humidity≤95%, non-condensing
12) Dimension:
GST303: 385mm444mm149mm
GST306: 575mm444mm149mm
4 Structure and Operation Principle
4.1 Structure
This control panel is surface-mounted on the wall. It contains main board, zone control
board, I/O board, filter board, Start key, Stop key and Power switch, etc. Appearances
of the GST303 and GST306 control panels are shown in Fig. 4-1.
Fig. 4-1(a)

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 3
Fig. 4-1(b)
4.1.1 Front Panel
Front panel of GST306 is consisted of start/stop control panel (including Start key, Stop
key and indicators), Power switch, Reset switch, and Manual Start key as shown in Fig.
4-2.
Fig. 4-2
Note: Power switch is only accessible when the door of the control panel is open.
Start key: Non-self-lock key. When this key is pressed, GST306 will send gas
release command to fire suppression devices immediately.
Stop key: Self-lock key. When this key is pressed, the already sent delay start
command will be stopped, and the control panel is reset to normal operation.
Run LED: Green. It illuminates when 24VDC power is applied to the control
panel and switched on.
In Delay LED: Red. It illuminates when the FACP detects fire and gives gas
release command, or field emergency gas override control is pressed and the
control panel enters delay start state.
Start LED: Red. It illuminates when start command is given (including

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 4
immediate start and delay start) and remains illuminating after relay output is
activated.
Release Confirm LED: Red. It illuminates when corresponding zonal
pressure switch is activated.
Fault LED: Yellow. It illuminates when connecting cable between the control
panel and emergency gas override control or gas release warning indicator is
in short or open circuit; or when connecting cable between the control panel
and present primary or standby solenoid of cylinder is in short or open circuit,
or when power supply is lower than 20V.
Output Fault LED: Yellow. It illuminates when connecting cable between the
control panel and primary or standby solenoid connected with gas
extinguishing control relay module is in short or open circuit.
Standby LED: Green. Reserved for later use.
Stop LED: Green. It illuminates when stop command is sent out.
Power switch: Switching on or off the power of the control panel.
Reset switch: Pressing this key, the control panel will be reset, and all output
signals will be stopped.
Manual Start key: This key is to control manual keys on the front panel. The
manual keys cannot be operated when this key is disabled.
4.1.2 Internal Structure
Internal structure of the control panel is shown in Fig. 4-3 (taking GST306 as an
example). It shows the relative position of main board, zone control board, I/O board
and filter board, etc. Internal connection is shown in Fig. 4-4.
Fig. 4-3
①Filter board ②I/O board ③Gas stop indicator board ④Main
board ⑤Zone control board

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
Lower Terminals
Gas Stop Indicator Board
RTB404-01-01-0/2-M3
Terminals
Lower Terminals
Upper Terminals
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.

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 6
XS6
Main Board
MOI
Lamp
tenance
Test main-
Z1 Z2
1
3
4
5
7 6
2
XS2
XS4
XS5
XP3
8
Fig. 4-5
①Loop terminals, connecting with signal cable.
②Terminal for connecting with Manual Start control key.
③20P ribbon cable socket, connecting with zone control board.
④20P ribbon cable socket, connecting with I/O board.
⑤Power input, connecting with external 24VDC power.
⑥Switch for setting up delay time of the control panel.
⑦Switch for setting up initial address code of the control panel.
⑧Gas stop indicator terminal, connecting with gas stop indicator control board.
Note: Please refer to Section 5.6 for setting method of pins and switches.
4.1.2.2 Zone Control Board
Each zone control board controls one protection zone. Its modular structure is shown in
Fig. 4-6.

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 7
XP1
Zone Control
Board
XP2
N
C
NO
COM
COM
NO
N
C
3
12 3 4
5
6
X2
X1
XS2
XS3
2
1
5
4
7
6
8
XS5
Fig. 4-6
①20P ribbon cable socket connecting with main board
②Setting pin for zone control board
③16P ribbon cable socket, connecting with I/O board
④Connecting with Start key
⑤Stop key
⑥Connecting with Stop key
⑦Start key
⑧Setting pin for self-answer mode
Note: Please refer to Section 5.6 for setting method of the pins.

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 8
4.1.2.3 I/O Board
3
I/O Board
1
2
4
Fig. 4-7
①20P ribbon cable socket connecting with main board.
②Terminals connecting input and output.
③Pins for setting gas extinguishing output mode: Pulse mode in open circuit,
and electric level in short circuit.
④16P ribbon cable socket, connecting with zone control board.
Note: Please refer to Section 5.6 for setting method of the pins.
4.2 Operation Principle
The control panel works on multi-wire mode. It connects with external devices such as
solenoid, C-9317 Emergency Gas Override Control, I-9402 Sounder Strobe, C-9318
Gas Extinguishing Warning Indicator and C-9316 Gas Stop Indicator through multi-wire.
It can also be connected to polarity-insensitive loop of fire alarm control panel (which
should be able to control fire suppression devices) to form an extinguishing control
system integrating fire alarm and fire suppression.
5 Mounting and Commission
5.1 Unpacking and Inspecting
Check the items against the packing list. Open the package and check whether
installation and operation manual, key to the control panel and accessories have come
with the control panel. Then inspect the appearance of the control panel.
Check internal configuration with reference to Chapter 4. Check the connection of
different parts and make necessary records for use in installation and commission.

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 9
5.2 Mounting
GST303, GST306 are wall-mounted. Their dimensions are shown in Fig. 5-1a and
Fig.5-1b.
Fig.5-1a
Installation Hole
Knockout Hole
Fig. 5-1b
When the conduit comes from the ceiling, the control panel is supported by a bracket.
And the conduit goes into the cabinet through the knockout hole at the back, as shown
in Fig. 5-2a. When the conduit does not come from the ceiling, it goes into the cabinet
through the knockout hole at the bottom as shown in Fig. 5-2 b.
Knockout Hole
Installation Hole

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 10
Conduit
Cabinet
Bracket
Fig. 5-2 a)
Cabinet
Conduit
Fig. 5-2 b)
5.3 Terminals
All external wires are connected to the control panel through I/O board or filter.
Terminals are shown in Fig. 5-3.

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. A4.7K/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) 1.0mm2or above twisted pair flame-retardant insulation cables for signal loop Z1,
Z2.
(2) 1.0mm2 or above RV cable for L3, G, L1, K1, K2, YK1, YK2, SW1 and SW2.
(3) 1.5 mm2or above RV cable for R and GND.
(4) 2.5mm2or 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) Emergencygas override control is connected to the corresponding terminals of the
control panel by three-wire mode. Cabling of different zones should not be mixed.

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Extinguishing Control Panel
Installation and Operation Manual
Page 12
When there are several emergency gas override controls, they should be
connected in series.
(4) Sounder strobe are to be connected to the control panel by two-wire mode, to
signal loop by polarity-insensitive two-wire, and to 24VDC power by
polarity-insensitive two-wire.
Please refer toAppendix 1 for system connection.
Note:
When cabling the emergency start and emergency stop buttons of
emergency gas override control, make sure to connect them according to
the marks on the control panel and emergency gas override control. If they
are reversed, the control panel will not give fault signal of connection error,
and it cannot operate properly.
When cabling gas stop indicator, make sure to connect them according to
the marks on the control panel and gas stop indicator. If they are reversed,
the control panel will not give fault signal of connection error, and it cannot
operate properly.
Save the removed terminal resistor for future use.
5.6 Setting
5.6.1 Setting Address of Zone Control Board
Each zone control board corresponds to a zone (1~6), so each zone has its own
address. Opening the cabinet, there is a pin X2 with marks of 1, 2, 3, 4, 5, 6 on the left.
Short the pin whose address is to be set by a jumper. In Fig. 5-4, it is set as number 4.
Fig. 5-4
Note: The address of zone control board cannot be set randomly. Please set one
number to one board in sequence. It’s not allowed to set several boards with the
same number.
5.6.2 Setting the Initial Address
The control panel communicates with the FACP through polarity-insensitive signal loop.
The initial address of the control panel on the FACP is set through code switch S1 on
the main board of the control panel (Fig. 5-5). It can be set as 1, 21, 41, 61, 81, 101,
121, 141, 161, 181.
Fig. 5-5
To set initial address, open the cabinet, turn the code switch S1 on the main board to
different positions according to initial address number. Details are shown in table 1.

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Extinguishing Control Panel
Installation and Operation Manual
Page 13
Table 1
Position of S1
0
1
2
3
4
5
6
7
8
9
Corresponding
initial address
1
21
41
61
81
101
121
141
161
181
After the initial address is set, the addresses of control enable pin, emergency start
button, emergency stop button, gas extinguishment and addresses reserved for future
use will be automatically set in sequence according to the number of zone control
board. No matter how many zones are configured to the control panel (1 ~ 6), control
enable pin (alarming action when disabled) occupies an address, which is the initial
address. Each zone occupies four addresses:
(1)Emergency Start Button (action).
(2)Emergency Stop Button (action).
(3)Gas extinguishment (pressure switch action and local fault).
(4)Reserved for future use.
The number of addresses occupied by the control panel = n x 4 + 1 (n is the maximum
quantity of zones, 1~6).
For example, in Fig. 5-5, S1 is set as 0, then the initial address is 1, in other words, the
number of the control enable lock is 1. The addresses of other points are shown in
Table 2. Table 2
Zone Number
Address
Zone Number
Address
Zone
No. 1
Emergency Start Button
2
Zone
No. 4
Emergency Start Button
14
Emergency Stop Button
3
Emergency Stop Button
15
Gas extinguishment
4
Gas extinguishment
16
Reserved
5
Reserved
17
Zone
No. 2
Emergency Start Button
6
Zone
No. 5
Emergency Start Button
18
Emergency Stop Button
7
Emergency Stop Button
19
Gas extinguishment
8
Gas extinguishment
20
Reserved
9
Reserved
21
Zone
No. 3
Emergency Start Button
10
Zone
No. 6
Emergency Start Button
22
Emergency Stop Button
11
Emergency Stop Button
23
Gas extinguishment
12
Gas extinguishment
24
Reserved
13
Reserved
25
5.6.3 Setting Delay Time
Because extinguishing device will finish gas release instantaneously on receiving valid
start command, improper operation will result in great losses, even loss of life; On the
other hand, it will affect the fire protective ability of some important places in a certain
period. For these reasons, the control panel is designed with delay started feature.
When receiving start request, it will delay for a certain time, and give command when
delay ended. To meet requirements under different conditions, the delay time can be
set by code switch S2 on the main board (see Fig. 5-6) within 0s～45s.

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 14
Fig. 5-6
To set the delay time, you can open the enclosure and turn code switch S2 on the main
board. The different position of S2 corresponds to different delay time as in Table 3.
Table 3
Position of S2
0
1
2
3
4
5
6
7
8
9
Corresponding
Delay Time (s)
0
5
10
15
20
25
30
35
40
45
For example, in Fig. 5-6, S2 is set at 7. The delay time of the control panel is 35s.
5.6.4 Setting Control Command Output
The control panel can be set to “pulse” or “electric level” mode to control different
zones according to field condition. The method is: Short pin X1 on I/O board
corresponding to a certain zone by a jumper to set to level mode; Remove the jumper
to set to pulse mode.
5.6.5 Setting Self-answer Mode
To choose which action is to be reported in case there is no pressure switch, the
answer mode of the control panel can be set as pressure switch answer or self-answer.
When it’s set as pressure switch answer, the control panel will only light extinguishing
warning indicator on receipt of action signal of pressure switch; When it’s set as
self-answer mode, it lights extinguishing warning indicator as soon as it starts output.
The method is: Short pin X1 of zone control board by a jumper to set to pressure switch
mode. Remove the jumper to set to self-answer mode.
Note:
The directions in Section 5.6 are only for commissioning engineer. Never operate
by yourself. Otherwise you will be responsible for any result.
5.7 Commission
Note:
The solenoid of cylinder will be started to trigger gas release when applied with
24V power. Do not connect the gas extinguishing relay module and solenoid
when commissioning. Connect them after the control panel is commissioned.
When the control panel is delayed and checks the action signal of pressure
switch, it keeps alarming until it is reset.
Commission Tools: two 24VDC relays, one cable (20mm~40mm)
System Initial State: Consecutive zone address, delay time 30s, pressure switch
answer mode.
If the extinguishing control panel is to be connected with a fire alarm control panel
(FACP), the FACPwill set the device types of the addresses occupied by the extinguish
control panel it registered. Please refer to the manual of the FACP for the device type

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 15
codes.
After the system is properly connected (except for solenoid), do the whole commission.
Use 24VDC relay in position of solenoid.
5.7.1 Commission of Delay Start
a) Press emergency start button, In Delay LED is lit, sounder strobe acts; the
FACP reports “Emergency start” action.
b) Press emergency stop button, Stop LED is lit, sounder strobe stops action;
the FACP reports “Gas abort” action.
c) Resume emergency stop button by a sucker, Stop LED goes out, sounder
strobe acts; “Gas abort” action is canceled.
d) When delay time ends, the control panel starts 24VDC relay, Start LED is
constantly lit, 24VDC relay should hold for about 5s.
e) Short pressure switch by a cable, Release Confirm LED is lit, external gas
extinguishing warning indicator is lit; the FACP reports “Gas dump” action.
f) Start the control panel from the FACP, In Delay LED is lit, sounder strobe acts.
5.7.2 Commission of Immediate Start
a) Pressing the start button on the control panel, Start LED is constantly lit, and
the control panel outputs starting level. For pulse output mode, the holding
period for starting level is the same as the time you press the start key. In
other words, you will have to keep pressing the start key until gas starts to
release. For level output mode, a press to the key for about several hundred
milliseconds is enough to trigger gas release, because the output circuit can
be self-locked instantly and keep continuous output.
b) Press the key on fireman’s control panel on the FACP corresponding to “Gas
Dump” address, Start LED is constantly lit, 24VDC relay should hold for about
5 seconds.
5.7.3 Commission of Fault Display and Report
a) Disconnect any cable between the control panel and emergency gas override
control, Common Fault LED is lit, the FACP reports “Gas dump” fault.
b) Short any two of the three terminals on emergency gas override control (L1, G,
L3) by a cable, Common Fault LED is lit, the FACP reports “Gas dump” fault.
c) Disconnect any of the cables with C-9329, Common Fault and Output Fault
LED are lit, the FACP reports “Gas dump” fault.
d) Disconnect any of the cables between the control panel and pressure switch,
the Common Fault LED is lit, the FACP reports “Gas dump” fault.
e) Disconnect any of the cables between the control panel and gas extinguishing
warning indicator, Common Fault LED is lit, the FACP reports “Gas dump”
fault.
f) Short input end of gas extinguishing warning indicator by a cable, Common
Fault LED is lit, the FACP reports “Gas dump” fault.
g) Disconnect the control panel and gas stop indicator, the FACP reports “Gas

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 16
dump” fault.
h) Disconnect any cable between control panel and protection door, the FACP
reports “Gas dump” fault.
5.8 Installation of Protective Cover
After mounting and commission, install the protective cover for start key and stop key.
Refer to Appendix 2 for installation method.
6 Operation
6.1 Powering-up, Self-test and Switching off
(1)Check the settings of the control panel according to Section 5.
(2)Power up the unit as follows:
Turn on the primary and standby power.
Turn on the power of the control panel. After the above operation, the control
panel starts self-test on sound and LEDs. After self-test, it enters standby
state.
Turn on primary/standby power switch and Run switch of the FACP. It will
register the address of the control panel. The quantity of address points
occupied by gas extinguishing devices = the greatest zone number x 4 +1.
Turn off the switches in reverse procedure of turning on.
6.2 Basic Operation
6.2.1 Start
Important: Because extinguishing device will finish gas extinguishing
instantaneously on receiving valid start command, so improper operation will
result in great losses beyond remedy, even loss of life; On the other hand, it will
affect fire protective ability of some important places in a certain period. Be very
careful when starting these devices!
Besides conditions of starting ordinary devices, starting extinguishing devices should
also meet the following conditions:
①The personnel to start extinguishing devices must be well trained of the relative
knowledge.
②Confirming the fire condition that extinguishing devices has to be started.
③Confirming that people in the protected zone have been evacuated.
After extinguishing devices have been started, field pressure switch will feed back
answer signal of device action, and gas extinguishing warning indicator is lit. The
control panel reports action of extinguishing devices to the FACP.
There are two modes of starting extinguishing devices: immediate start and delay start.
a) Immediate Start
When personnel on duty have confirmed fire and people have been evacuated,
extinguishing devices can be started immediately. The command can be given from the
control panel or from the FACP.

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Extinguishing Control Panel
Installation and Operation Manual
Page 17
When using the control panel, press the Start key corresponding to the
alarming zone on the control panel to start extinguishing devices, and output
starting level. Since the holding period for starting level is the same as the
time you press the start key for pulse output mode, you will have to keep
pressing the start key until gas starts to release.
When using the FACP, there are two methods: from the keypad and from
fireman’s control panel. When the “start” key on main unit (input the
addresses of the extinguishing devices and confirm) or the key on manual
start panel is pressed, the FACP sends out start command immediately.
Using the “start” key on the keypad is a common method, which requires user code
and types of connected extinguishing devices; using fireman’s control panel is a
special and quick method. It requires programming and defining the manual keys on
fireman’s control panel and their corresponding extinguishing devices when
commissioning the FACP. When giving start command by fireman’s control panel,
press the manual key, command LED will be lit and start command will be sent out.
Generally, it’s recommended to use fireman’s control panel as a quick method less
possible to be mistaken. By this method, you can simply find the corresponding unit
according to the indication on the keys of the fireman’s control panel and then press its
command key. Under special conditions, if the devices cannot be started through
fireman’s control panel, they can also be started through keyboard.
Note:
As soon as the immediate start command is given, extinguishing
devices will finish release instantaneously without a stop choice, so this
operation should be carried out with caution.
For pulse output mode, the holding period for starting level is the same
as time you press the start key. In other words, you will have to keep
pressing the start key until gas starts to release or for more than 5
seconds.
For level output mode, output circuit can be instantly self-locked to keep
continuous output, you only need to press the key for about 1 second.
To reset the output, you will have to turn off the 24V power of the control
panel.
The start command must be given under “Manual Enable” and “Release
Enable” states either you start the controlled devices through the
keypad or through fireman’s control panel of the FACP. When the FACP
is in “Manual Disable” or “Release Disable” states or the device to be
started is disabled or in fault state, the start operation is invalid.
To start immediately, you need to press the central part of the protective
cover, as shown in Appendix 3.
b) Delay Start
Delay start mode enables the user to confirm if fire really occurs, and if people in the
protective zone have been evacuated during the delay time to ensure safety of life and
property.

GST303 /GST306
Extinguishing Control Panel
Installation and Operation Manual
Page 18
Delay start control can be realized through field emergency start button and the FACP.
When field emergency start button of protected zone is pressed, the control panel
will enter delay start stage and report action of emergency start button to the FACP.
The control panel will give start command after the delayed period. In this period,
you can stop the command according to field situation. Please refer to section
5.6.3 for the setting of delay time.
When detectors on the signal loop of the FACP detect fire, and when automatic
start of fire suppression devices is enabled on the FACP, if only the cause and
effect equation to start the extinguishing devices is valid, the FACP will give start
command and the control panel will enters delay start state.
In delay period, sounder strobes will be activated.
Delay start time of the control panel can be set within 0s～45s. The In Delay LED is lit
during delay period.
Note: Delay start can only be done through the FACP in “Release Enable” state. When
the FACP is in “Partially Automatic” state, cause and effect equations including “= =”
take part in automatic start logic; in “Automatic” state, cause and effect equations
including “=”and “= =” can take part in automatic start logic.
6.2.2 Stop
You can stop gas-extinguishing devices when they are in delay stage. According to
field condition, different methods can be used:
①In delay period before start command is sent out, pressing “Stop” key of
corresponding zone on the control panel can realize emergency stop of
extinguishing devices.
②In delay period before start command is sent out, pressing field emergency stop
button can realize emergency stop.
③In delay period before start command is sent out, pressing “Start” key on keyboard
of the FACP main unit and enter user code and device type of emergency stop
device can realize emergency stop.
④In delay period before start command is sent out, pressing the key on fireman’s
control panel corresponding to “Gas abort” can realize emergency stop.
⑤In delay period before start command is sent out, opening the door to the
protected zone will temporarily stop gas extinguishing process. But please be
aware that the start delay countdown will resume if there is still valid start signal.
Any of the above four methods has to be used to stop gas extinguishing.
If the field emergency stop button or the Stop key is pressed, the control will report
to the FACP action of the emergency stop button. After the stop command is sent
out, Stop LED will illuminate, and the gas stop indicator in the protected zone will
illuminate.
If the door to the protected zone is opened during the delay period, the gas stop
indicator will illuminate. But if the door is opened in normal condition without
delayed start, the gas stop indicator will not illuminate.
6.2.3 Fault Indication
When external devices or cable to the control panel are in fault, the control panel will
report gas extinguishment fault (indicating fault in a certain zone).