Circuit (Zone) Disconnect Buttons (Bypass Switches); Common Controls - Mircom FR-320 Series Installation And Operation Manual

8.3.2 IDC 5 and IDC 6
• Alarm LED & Trouble LED
8.3.3 NAC 1 and NAC 2 (NAC Circuits)
• Trouble LED (amber)
8.3.4 RAC 3 and RAC 4 (Releasing Circuits)
• Trouble LED (amber)
8.4

Circuit (Zone) Disconnect Buttons (Bypass Switches)

Circuit (Zone) Disconnect buttons are provided for all Initiating Device Circuits and Notification
Appliance Circuits on the Fire Alarm Control Panel. These buttons are located beside their
respective indicating LED. Each button is a toggle switch which disconnects the circuit (if it is
currently connected) or connects the circuit (if it is currently disconnected).
The buttons are shown in Figure 22. The Initiating Device Circuit disconnect buttons are
labeled IDC 1-6. The Notification Appliance Circuit disconnect buttons are labeled NAC 1 and
NAC 2. The button labeled RAC 3 has no function. The button labeled RAC 4 disconnects
NAC 4 in modes where NAC 4 is configured.
Pressing a Circuit Disconnect button bypasses the associated circuit and turns on its Trouble
Indicator, activating Common Trouble. While a Circuit is disconnected, all changes in status
(alarms and troubles) on that circuit are ignored. The panel does not activate disconnected
Notification Appliance Circuits.
Disconnecting an active Latching Initiating Device Circuit (including Alarms, Water flow Alarm,
Sprinkler Alarm, General Alarm, and Latching Supervisory) does not affect its status until the
panel is reset. Disconnecting an active Non-Latching Initiating Device Circuit (including Non-
Latching Supervisory and Trouble-Only) causes them to behave as if the alarm situation has
disappeared. Disconnecting an active Notification Appliance Circuit immediately deactivates
the circuit.
When an Initiating Device Circuit Disconnect button is returned to the normal (un-bypassed)
state (by pressing it again in order to un-bypass the circuit), the panel checks the state of the
circuit. If the circuit is active, the Status Indicator flashes for 10 seconds at the Fast Rate
without processing the input. If the Circuit is not re-bypassed by then, it will be processed as a
new input.
8.5

Common Controls

8.5.1 System Reset Button
The System Reset button resets the Fire Alarm Control Panel and all Circuits. In particular, the
system reset button
• Resets all Latching Trouble Conditions
• Resets all Initiating and Releasing Circuits
• Resets 4-Wire Smoke Supply
• Turns off all Notification Appliance Circuits
• Turns off Signal Silence Indicator if the signal silence option is enabled
• Stops and resets all Timers
The zone type and LED behavior varies upon the
configuration. Steady when turned on.
turns on at slow flash rate when in trouble or
bypassed
turns on steady when the circuit is bypassed
turns on at slow flash rate when in trouble
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