Honeywell NOTIFIER SCS Series Operation And Installation Manual page 153

HVAC Wiring Diagrams
Power Source
Listed contact
for Energy
Management
System
1b listed
contact
Service
Disconnect
Switch
Figure 5.44 depicts a fan in an HVAC system with the capability of
above configuration, the CON
fan (the contactor is used when the power being switched is greater than 24 volts). When the CON
closed, thus allowing the EMS to freely control the fan. In this case the EMS is
is supplied to the fan, the fan is
position of the sail switch, which would indicate when the fan is
CLOSED
due to the EMS. When the CON
OFF
being supplied by the EMS.
SCS Series Manual — P/N 15712:L 7/18/16
Energy Management System
(use 3.9K listed ELR with FZM-1)
FAN OFF
Power Return
Figure 5.44 Fan Control - HVAC Switch Group Type 5
CM is deactivated. The CON
OFF⁄CL
and the sail switch is
OFF
CM is activated, the normally closed contactor opens, thus cutting any power to the fan that was
OFF⁄CL
Listed
24 VDC
Power Source
ELR-47K
Listed
Sail
Switch
N/O
COM
N/C
control and verification of the
OFF
CM controls a normally closed contactor that switches power to the
OFF⁄CL
, so no power is being supplied to the fan. When no power
OFF
, indicating no airflow in the duct. The VER
CLOSED
. In this case the VER
OFF
Ratings and Wiring Diagrams
Listed
24 VDC
Power Source
CON CM
OFF/CL
(deactivated)
*If the SLC device
does not match the
FCM-1
one in this figure,
refer to the SLC
manual appendix,
which contains
wiring conversion
charts for type V and
type H modules.
VER MM
OFF/CL
(activated)
FMM-1
SLC Loop
state, switch group type 5. In the
OFF
CM is deactivated, the contactor is
OFF⁄CL
MM monitors the
OFF⁄CL
MM is activated because the fan is
OFF⁄CL
153