4-13
Like smoke dampers, fan control and overriding the HVAC control is a basic function of the
Simplex Smoke Control System. General principles for interconnection to a non-dedicated fan are
shown in Figures 4-8 and 4-9.
In a non-dedicated fan control application, a 4090-9120 6-Point I/O Module is used to provide
inputs to a fan controller for smoke control override and monitor the feedback from the controller.
The wiring between the module and the fan controller is unsupervised, so the module must be
mounted within three feet of the controller in accordance with NFPA 72.
LISTED
SAIL
SWITCH
N/O COMM
POWER
+24V
FROM
FACP
0V
INPUT 1
COMM
COMM
N/O
N/O
SOURCE
LISTED
RELAY
(N/C)
LISTED
RELAY
(N/O)
SERVICE
DISCONNECT
FA
IDNet SLC
FROM FACP
N
RETURN
EMS
6.8 K 1/2 W EOLR
(Per Installation Instructions, 574-876)
1A @ 30 VDC
or
1/4 A @ 120 VAC
Figure 4-8. Non-Dedicated Fan Control Using a 6-Point I/O Module
Continued on next page
Non-Dedicated Smoke Control System Wiring Diagrams, Continued
Non Dedicated
Fan Control
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