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108
SCS Series Manual —
P/N 15712:L 7/18/16
Ratings and Wiring Diagrams
Air Flow Switches
5.2 Air Flow Switches
Any air flow switch used in a smoke control or HVAC system only requires UL listing for HVAC applications. Air flow verification may be
implemented either with an air flow switch or a pressure differential switch. The manufacturers listed below provide products that have been
identified for use with the SCS⁄SCE. The manufacturers, part numbers and device types are as follows:
5.3 Dedicated Smoke Control System Wiring Diagrams
5.3.1 Fans
Figure 5.1 Fan Control, Dedicated System - FSCS Switch Group Type 1
Figure 5.1 depicts a fan in a dedicated system with the capability of
OFF
control and verification of the
OFF
state, switch group type 1. In the
above configuration, the CON
OFF⁄CL
CM is deactivated. The CON
OFF⁄CL
CM controls a normally closed contact which switches power to the
fan (the contact is used when the power being switched is greater than 24 volts). When the CON
OFF⁄CL
CM is deactivated, the contact is
closed, thus supplying power to the fan. When power is supplied to the fan, the fan is
ON
and the sail switch is
OPEN
, indicating airflow in the
duct. The VER
OFF⁄CL
MM monitors the
CLOSED
position of the sail switch, which would indicate when the fan is
OFF
. In this case the VER-
OFF⁄CL
MM is deactivated because the fan is
ON
and the sail switch is
OPEN
.
Manufacturer
Model
Type
Johnson Controls
F62AA
Air Flow
Dayton
2E462
Pressure Differential
Antunes Controls
SMV, SMD, SML, JPD-2
Pressure Differential
Power Source
1a listed
contactor
Service
Disconnect
Switch
ELR-47K
(use 3.9K listed ELR with FZM-1)
N/O
COM
N/C
Power Return
Listed
24 VDC
Power
Source
FMM-1
FCM-1
CON
OFF/CL
CM
(deactivated)
VER
OFF/CL
MM
(deactivated)
FA
N
-Df1
-f
s
-2
.wmf
SLC Loop
FAN ON
Listed Sail
Switch
*If the SLC device
does not match the
one in this figure,
refer to the SLC
manual appendix,
which contains
wiring conversion
charts for type V
and type H
modules.