Honeywell NOTIFIER SCS Series User Manual

SCS Series Manual — P/N 15712:L 7/18/16 179
HVAC Wiring Diagrams Ratings and Wiring Diagrams
Figure 5.71 EP Damper Control - HVAC Switch Group Type 5
Figure 5.71 depicts an EP damper in an HVAC system with the capability of CLOSED control and verification of the CLOSED state, switch
group type 5. In the above configuration, the CON
OFF⁄CL
CM is activated. The CON
OFF⁄CL
CM controls a normally open contactor for the
pressure switch power line. When the CON
OFF⁄CL
CM is activated, the normally open contactor is closed. When the contactor closes, power
is supplied to the pressure switch, which cuts the airflow to the damper and closes it. When the CON
OFF⁄CL
CM is deactivated, the EMS is
free to control the damper. The EMS is currently being overridden by the CON
OFF⁄CL
CM.
When power is supplied to the pressure switch, the damper closes. When the damper completely closes, the damper closed limit switch is
CLOSED, indicating that the damper is in the CLOSED position. The VER
OFF⁄CL
MM monitors the CLOSED position of the damper closed limit
switch. In this case the VER
OFF⁄CL
MM is activated because the damper is CLOSED.
FMM-1
Airflow
PRESSURE
SWITCH
SMOKE
DAMPER
CLOSED
Power Source
Listed
24 VDC
Power Source
SLC Loop
FCM-1
CON
OFF⁄CL
CM
(activated)
Dep-h5A-fs-2.wmf
Power
Return
VER
OFF⁄CL
MM
(activated)
N/O
COM
Limit Switch
for closed
position
ELR-47K
(use 3.9K listed ELR with FZM-1)
Pneumatic
Tubing
Energy
Management
System
1a 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