Honeywell NOTIFIER NFS2-640 Manual page 21

Status Banner
Extended 12 character
custom label
– Responding to a CO event:
1. To silence only the panel sounder:
Press the
ACKNOWLEDGE
annunciators, history buffer, installed printers, and CRT-2s.
To silence the panel sounder and any activated outputs that are programmed as silenceable:
Press the
SIGNAL SILENCE
remote annunciators, history buffer, installed printers, and CRT-2s. Check the alarm message for the location and type of event.
2. Correct the condition that activated the CO alarm.
3. Press the
SYSTEM RESET
A "System Normal" message is sent to the LCD display, remote annunciators, history buffer, installed printers, and CRT-2s.
• Emergency Signaling, Type SM
• Smoke Control, Smoke Movement
All fires produce smoke, and the movement of smoke will follow the same pattern as the overall air movement within a building, often flowing
away from the fire to unwanted areas. A smoke control system must be able to inhibit the flow of smoke within a building. Elements that cause
the movement of smoke include one or more of the following:
– Stack effect
– Buoyancy of the smoke
– Expansion
– Wind
– Elevator piston effect
– the HVAC system
Principles of Smoke Control
The smoke control system uses a building's ventilation system to exhaust the fire floor and pressurize surrounding floors. The three major
considerations for smoke control are:
– Smoke containment
– Purging
– Door-opening forces
HVAC Equipment
For smoke control applications, HVAC systems must have the following capabilities:
– Supply outside air to a space
– Return air from a space
– Exhaust air from a space to the outside
The SCS/SCE
– The SCS-8 Smoke Control Station and the SCE-8 Smoke Control Expander can be used in conjunction with this panel to provide smoke
control capabilities.
– The SCS-8LSmoke Control Lamp Driver and the optional SCE-8L are used with the smoke control system to provide graphic annunciation.
– Dedicated/Non-dedicated Smoke Control System Wiring Diagrams
NFS2-640 UL Listing Document — P/N 52741LD:H9 5/19/2022
A L A R M : C O
E A S T E R N W I N G
Zone
Figure 24 Sample CO Alarm Message
/ key to silence the panel sounder. The fire panel will send an Acknowledge message to the remote
SCROLL DISPLAY
key. The
SIGNALS SILENCED
key to return the control panel to normal operation.
CO Alarm indicator
I N T E N S I V E C A R E U N I T
Z 0 0 4 0 3 : 1 9 P 0 4 1 5 1 2 2 M 1 4 7
Time and date of trouble
LED will light steady. The control panel sends a Signal Silenced message to the
Custom descriptor for
this device location
Device address
21