FS20 Marine Fire Detection Control Panel
Siemens Industry, Inc. A6V10519176_enUS_b
Building Technologies Division
12.2.1 X601 Terminal Block
NAC 1 class A / NAC 1-1 class B / NAC 1-2 class B
4 NAC1-1 (+) Positive feed for notification appliances for NAC 1 class A or NAC 1-1 class B
3 NAC1-1 (-) Return feed for notification appliances for NAC 1 class A or NAC 1-1 class B
2 NAC1-2 (+) Positive feed for notification appliances for NAC 1 class A or NAC 1-2 class B
1 NAC1-2 (-) Return feed for notification appliances for NAC 1 class A or NAC 1-2 class B
Admissible cable cross-section: 1 x 12…18 AWG or 2 x 16…18 AWG
12.2.2 X602 Jumper
Degraded Mode Enable/Disable for NAC 1 class A or NAC 1-1 class B
3 - 2 Disable degrade Disable degraded mode for NAC 1 class A or NAC 1-1 class B.
Circuit will not activate the notification appliances if degraded mode is activated
and an alarm is present.
1 - 2 Enable degrade Enable degraded mode for NAC 1 class A or NAC 1-1 class B.
Circuit will activate the notification appliances if degraded mode is activated
and an alarm is present.
12.2.3 X603 Jumper
Degraded Mode Enable/Disable for NAC 1-2 class B
3 - 2 Disable degrade Disable degraded mode for NAC 1-2 class B. Circuit will not activate the
notification appliances if degraded mode is activated and an alarm is present.
1 - 2 Enable degrade Enable degraded mode for NAC 1-2 class B. Circuit will not activate the
notification appliances if degraded mode is activated and an alarm is present.