Honeywell NOTIFIER SCS Series User Manual

164 SCS Series Manual — P/N 15712:L 7/18/16
Ratings and Wiring Diagrams HVAC Wiring Diagrams
Figure 5.55 Motorized Damper Control - HVAC Switch Group Type 4
Figure 5.55 depicts a motorized damper in an HVAC system with the capability of
CLOSED control, switch group type 4. In the above config-
uration, the CON
OFF⁄CL
CM is deactivated. The CON
OFF⁄CL
CM controls two contactors: a normally closed contactor for the damper open
power line, and a dual normally open/normally closed contactor for the damper close power. When the CON
OFF⁄CL
CM is activated, the nor-
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
OFF⁄CL
CM is deactivated, the EMS is free to control the
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.
Power Source
Damper
Open
Power
Power Return
Listed
24 VDC
Power Source
DMO-h4a-fs-2.wmf
SLC Loop
Damper
Closed
Power
AC
MOTOR
DAMPER
CLOSED
FCM-1
CON
OFF/CL
CM
(deactivated)
Energy
Management
System
1b listed contact
1a, 1b
listed
contactor
*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.

Honeywell NOTIFIER SCS Series Specifications

General

Brand	Honeywell
Model	NOTIFIER SCS Series
Category	Control Unit
Language	English