Honeywell SCS-8 User Manual

188 SCS Series Manual — P/N 15712:L 7/18/16
Ratings and Wiring Diagrams HVAC Wiring Diagrams
Figure 5.80 EP Damper Control - HVAC Switch Group Type 14
Figure 5.80 depicts an EP damper in an HVAC system with the capability of
OPEN and CLOSED control and verification of the OPEN state,
switch group type 14. In the above configuration, the CON
ON⁄OP
CM is activated and the CON
OFF⁄CL
CM is deactivated. The CON
ON⁄OP
CM
controls a normally closed contactor for the pressure switch power line. When the CON
ON⁄OP
CM is activated, the normally closed contactor
is opened. When the contactor opens, power is cut from the pressure switch, which allows airflow to open the damper. When the
CON
ON⁄OP
CM is deactivated, the EMS is free to control the damper. The EMS is currently being overridden by the CON
ON⁄OP
CM.
When power is cut from the pressure switch, the damper opens. When the damper completely opens, the damper open limit switch is
CLOSED, indicating that the damper is in the OPEN position. The VER
ON⁄OP
MM monitors the CLOSED position of the damper open limit
switch In this case the VER
ON⁄OP
MM is activated because the damper is OPEN.
FMM-1
Airflow
PRESSURE
SWITCH
SMOKE
DAMPER
OPEN
Power Source
Listed
24 VDC
Power Source
SLC Loop
FCM-1
CON
OFF/CL
CM
(deactivated)
DEP-h14A-fs-2.wmf
Power
Return
VER
ON⁄OP
MM
(activated)
N/O
COM
Limit Switch
for open
position
ELR-47K
(use 3.9K listed ELR with FZM-1)
Pneumatic
Tubing
Energy
Management
System
1a listed
contactor
1b listed
contactor
FCM-1
CON
ON/OP
CM
(activated)
*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 SCS-8 Specifications

General

Brand	Honeywell
Model	SCS-8
Category	Control Unit
Language	English