Installation Guide
1 Cover Flap - Frangible Element
The FCS 0020 0016 OS2 MCP has a polycarbonate cover protecting the "Open" and "Reset"
push buttons from accidental operation. This cover can be opened by pulling firmly on the
lowest part of the cover. Once opened, the cover cannot be properly closed without use of a
reset key inserted in the slot on the underside. There is no cover flap on the FCS 0020 0037 OS2
Tamperproof CP.
2 "Open" pushbutton – FCS 0020 0016 only
Depressing the "Open" pushbutton places the OS2 controller into the "Activated" state. Typically,
this will cause the controlled smoke vents to open.
3 "Reset" pushbutton – FCS 0020 0016 only
Depressing the "Close" pushbutton resets the OS2 controller from "Activated" state. Typically, this
will cause the controlled smoke vents to close whilst the pushbutton remains depressed.
4 "Test" pushbutton
The "Test" pushbutton mounted on the underside face of the module assembly allows a brief
functional test of the installed unit. Depressing the pushbutton illuminates the 3 status LEDs and
causes the sounder (if enabled by CN3 above) to sound.
5 "Silence" pushbutton
The "Silence" pushbutton mounted on the underside face of the module assembly allows the
sounder output to be silenced at any time.
6 Green "Power" LED
Illuminates to show power is available. The LED briefly blinks off to indicate the MCP has been
activated, and can only be reset using the electronic reset key.
7 Red "Activated" LED
Illuminated when the OS2 controller is activated on fire condition
8 Yellow "Fault" LED – Available to all
"Fault" LED off – No faults or statuses to report
"Fault" Flashing (50/50) – Further OS2 controller fault diagnosis or maintenance required
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