TSGR-21 GAS Release Panel User Manual
Vighnaharta Technologies Pvt. Ltd. Page 38 of 43
• All relay outputs are deactivated.
• System scans zone status and indicates accordingly.
4.3 Zone Disable
When any zone is disable, system ignores any input from the particular zone, even if there is fire condition. In
case of cross zoning, if one zone is disabled (bypassed) and other is in fire condition, system does not release
RAC.
For example, Zone2: Disable, LCD and LED indicate as shown below.
The system operates as given below.
• Respective zone Bypass LED turns ON.
• Respective zone does not give any input to the system regarding fire or fault.
• Other LEDs retain their status.
• LCD shows the zone Bypass message.
• All events are stored in memory.
4.4 NAC Operation
There are Three NAC outputs NAC1, NAC2, NAC3. At the Respective NAC output, a NAC is connected.
NAC1: is operates only when any one of zone is in fire Condition.
NAC2: is operates only when Both the Zones (Z1 and Z2) are in fire condition.
NAC3: is operates only when RAC release.
These NACs are turned OFF by manual action called System Silence. The NAC faults & System Silence indication
on LCD are as shown below.
For example, NAC1: Fault,
The NAC turns ON in any zone fire alarm condition. If NAC is turned OFF using Silence key, then NAC turns OFF for
the period of NAC Resounding Time. After this time, NACs again turns ON if the Fire alarm condition still present
on Panel. This sequence continues till system reset or fire condition.
Note: To resound NAC immediately press Silence key again. All NAC will be activated.
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