Chapter 2: Installation
12 1X-X3 Installation Manual
MCP Abort. Aborts the extinguishing process. During the standby, extinguishing
preactivation, extinguishing activation, and fire alarm states, activating the MCP
Abort device prevents the extinguishing process until the MCP Abort device is
deactivated and the control panel is reset.
Connecting an external device for manual-only mode control
When the control panel is in manual-only mode, the extinguishing process can
only be initiated manually, using the MCP Start device. Automatic extinguishing
events reported by the fire detection zones are disabled for extinguishing
activation.
This mode of operation can be used when the user interface is not suitable for
your application and a remote control is needed.
A manual-only mode input device is used to switch the panel to this mode. In
addition to connecting a manual-only mode activation device, you must configure
the system by setting the “Manual-only mode local” option to OF.
EU ordinances and regulations require the use of a key switch to control access
to this function.
Refer to the topic “Input and output specifications” on page 61 for the required
impedance values for this unsupervised input.
Connecting a low pressure indication switch
Use the low pressure indication input to detect low pressure in the extinguishing
agent container.
The “Pressure switch type” option defines whether the device detects low
pressure when open or when closed. In the device standby state, either normally
open or normally closed, the input is not interpreted as a low pressure fault. The
default setting is normally closed (NC). This results in a low pressure fault when
the switch opens.
The topic “Input and output specifications” on page 61 shows how the low
pressure indication device impedance is related to the low pressure fault.
Connecting an extinguishing agent flow device
Use the extinguishing agent flow input to connect a device that detects the
release of the extinguishing agent from its container into the extinguishing area.
Note: Before you connect a device to the extinguishing agent flow input, make
sure that it is compatible with the required input impedance levels of the control
panel, as specified in the topic “Input and output specifications” on page 61.
The “Extinguishing agent flow” option lets you define the functionality of this
device. Here are the details.
When the extinguishing agent flow option is set to OF, the panel enters the
extinguishing released state when the actuator output is activated. The panel
does not require confirmation of the flow to enter this state. The extinguishing
agent flow circuitry continues to operate for indication purposes. The panel will
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