Honeywell NOTIFIER SCS Series Operation And Installation Manual page 159

HVAC Wiring Diagrams
Power Source
1a listed
contact
1b listed
contact
Service
Disconnect
Switch
Figure 5.50 depicts a fan in an HVAC system with the capability of
13. In the above configuration, the CON
always in the opposite state when the smoke control system is in operation and are always deactivated during normal operation. The
CON CM is wired in parallel with the EMS; when wired in parallel with the EMS the CM must be a relay module. When the
ON⁄OP
CON CM and the CON
ON⁄OP
plied to the fan. When power is supplied to the fan, the fan is
MM monitors the
OFF⁄CL
In this case the VER
the CON CM overrides whatever state the EMS is in and closes the normally open contactor, thus supplying power to the fan and turn-
ON⁄OP
ing it . When the CON
ON
, overriding whatever state the EMS is in.
OFF
SCS Series Manual — P/N 15712:L 7/18/16
Energy Management System
CON CM
ON/OP
(deactivated)
COM
N/O.
FRM-1
(use 3.9K listed ELR with FZM-1)
FAN ON
Power Return
Figure 5.50 Fan Control - HVAC Switch Group Type 13
CM is deactivated and the CON
ON⁄OP
CM are deactivated, the EMS is free to control the fan. In this case the EMS is
OFF⁄CL
position of the sail switch, which would indicate when the fan is
CLOSED
MM is deactivated because the fan is
OFF⁄CL
CM is activated for smoke control, the CON
OFF⁄CL
Listed
24 VDC
Power Source
Listed
24 VDC
Power Source
ELR-47K
Listed
Sail
Switch
N/O
COM
N/C
and control and verification of the
ON OFF
CM is deactivated. These two control modules are
OFF⁄CL
and the sail switch is
ON OPEN
due to the EMS. When the CON
ON
CM opens the normally closed contactor and turns the fan
OFF⁄CL
Ratings and Wiring Diagrams
*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.
CON CM
OFF/CL
(deactivated)
FCM-1
VER MM
OFF/CL
(deactivated)
FMM-1
SLC Loop
state, switch group type
OFF
, so power is being sup-
ON
, indicating airflow in the duct. The VER-
.
OFF
CM is activated for smoke control,
ON⁄OP
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