Simplex 4100U - Dedicated Fan Control

4-8
Like smoke dampers, fan control is a basic function of the Simplex Smoke Control System.
General principles for interconnection to a dedicated fan are shown in Figures 4-4 and 4-5.
In a dedicated fan control application, the 4090-9118 Relay IAM is used to provide inputs to a fan
to turn it ON and monitor the feedback from the controller. The wiring between the Relay IAM
and the fan is unsupervised, so the IAMs must be mounted within three feet of the controller in
accordance with NFPA 72.
LISTED
SAIL
SWITCH
N/O COMM
POWER
SOURCE
IDNet SLC
FROM FACP
LISTED
RELAY
(N/O)
SERVICE
DISCONNECT
FAN
6.8 K 1/2 W EOLR
(Per Installation Instructions 574-874)
RETURN
1A @ 30 VDC
or
1/4 A @ 120 VAC
INPUT
COMM
N/O
Figure 4-4. Dedicated Fan Control Using a Relay IAM
Continued on next page
Dedicated Smoke Control System Wiring, Continued
Dedicated
Fan Control