Non-Dedicated System Operation - Honeywell NOTIFIER SCS Series Operation And Installation Manual

The SCS⁄SCE
4. Program the FACP to activate the CON
CON CM.
OFF/CL
Equations must be written to do all of the following steps for a control point within a toggle switch group type, if only an OFF control mod-
ule is present:
1. Program the FACP using CBE equations to establish the automatic control state (when the Dedicated System is not controlling smoke)
of the CON
OFF⁄CL
2. Program the FACP using CBE equations which are activated during a fire. Activate/deactivate all control points as required to help
contain smoke.
3. Activate the CON
CON CM (if normally activated) for five minutes once per week using a CBE equation.
OFF/CL
NOTE: CBE equations for time functions are deactivated automatically during a fire alarm condition. ONYX Series FACPs must be
programmed such that CBE deactivates when an alarm condition is present.
Automatic Control. Automatic control is established when all toggle switches are set to the AUTO position and no fire has been detected by
the panel.
Manual Control. Manual actions may be taken to override the automatic functions. Moving any switch on the SCS⁄SCE out of the auto-
matic position (ON/OFF) will cause the FSCS to enter the manual control state. In this state, any further automatic operation is inhibited for
the respective SCS⁄SCE.
According to the requirements of NFPA 92A, after the first alarm, automatic operation will be inhibited for the entire FSCS. Manual inter-
vention is then required to make any changes to the state of smoke control points.
All smoke control elements (fans, dampers, etc.) must be configured to provide feedback via monitor points present in the toggle switch
group type. Dedicated Systems employ feedback constantly to monitor system operation when the SCS⁄SCE is in manual mode only. If the
correct feedback is not received within the specified trouble delay time, trouble will be indicated within the toggle switch group and at the
FACP or Network Control Annunciator. The trouble condition requires acknowledgment to silence the sounders at the FSCS and the FACP
or Network Control Annunciator.
• Existing/legacy SCS installations (includes Mode A): Systems may be returned to the automatic condition by placing all SCS⁄SCE
switches into the AUTO position and resetting the panel. Resetting the FACP and/or Network Control Annunciator is required after
manual operation in Dedicated Systems and after a fire alarm condition in all systems. Reset of the FACP and/or Network Control
Annunciator will be inhibited until all SCS⁄SCE switches are returned to the AUTO position.
• NFS2-3030/NCA-2 Mode B systems: Refer to Appendix C.2, "Mode B Operation".
NOTE: A graphic representation for the location and function of each switch is to be mounted adjacent to the FSCS. This graphic
representation must clearly identify each switch.

Non-dedicated System Operation

When HVAC equipment serves also to control smoke in an emergency, the system is classified as Non-dedicated. The FACP and/or Network
Control Annunciator and SCS⁄SCE are responsible for the smoke control operation, while HVAC functions are controlled by other systems.
The control of daily HVAC building management functions including AHU and dampers should not be a function of the FACP and/or Net-
work Control Annunciator. The thermostat or building control signals connect directly to the motor control and do not pass through the
FACP and/or Network Control Annunciator.
In Non-dedicated Systems, automatic control must be provided by other systems, and the AM2020/AFP1010 need not be programmed for
receiving unit operation. Equations must be written to do the following for all control points present within a toggle switch group type:
1. Program the FACP using CBE equations to establish the automatic control state (when the Non-dedicated System is not controlling
smoke) of all control points. All control points must be off.
2. Program the FACP using CBE equations which are activated during a fire. Activate control points as required to help contain smoke.

Automatic Control
Automatic control is established when all toggle switches are set to the AUTO position and no fire has been detected by the FACP. During
automatic control, the building HVAC system or FACP may operate certain elements of the smoke control equipment independently of the
FSCS.
64
CM (if present) whenever the CON
OFF/CL
CM point.
CM (if normally deactivated when the Dedicated System is not controlling smoke) or deactivate the
OFF/CL
CM is inactive using a CBE equation for the
ON/OP
SCS Series Manual — P/N 15712:L 7/18/16
Configuration