Honeywell NOTIFIER SCS Series Operation And Installation Manual page 164

Ratings and Wiring Diagrams
1a, 1b
listed
contactor
Damper
Open
Power
MOTOR
Power Return
Figure 5.55 depicts a motorized damper in an HVAC system with the capability of
uration, the CON
OFF⁄CL
power line, and a dual normally open/normally closed contactor for the damper close power. When the CON
mally closed contactor is opened (cutting any power supplied by the EMS to the damper open power line), the normally closed portion of the
dual contactor is opened (cutting any power supplied by the EMS to the damper closed power line), and the normally open portion of the
dual contactor is closed, thus supplying power to close the damper. When the CON
damper. The EMS is currently supplying power to the damper closed power line. When power is supplied to the damper closed power line,
the damper closes.
164
1b listed contact
Damper
Closed
Power
DAMPER
CLOSED
AC
Figure 5.55 Motorized Damper Control - HVAC Switch Group Type 4
CM is deactivated. The CON
Energy
Management
System
*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.
CLOSED
CM controls two contactors: a normally closed contactor for the damper open
OFF⁄CL
Power Source
Listed
24 VDC
Power Source
CON
OFF/CL
(deactivated)
FCM-1
control, switch group type 4. In the above config-
OFF⁄CL
CM is deactivated, the EMS is free to control the
OFF⁄CL
SCS Series Manual — P/N 15712:L 7/18/16
HVAC Wiring Diagrams
CM
SLC Loop
CM is activated, the nor-