Honeywell NOTIFIER SCS Series Operation And Installation Manual page 187

HVAC Wiring Diagrams
1b listed
contactor
1a listed
contactor
Pneumatic
Tubing
PRESSURE
SWITCH
Power
Return
Figure 5.79 depicts an EP damper in an HVAC system with the capability of
switch group type 13. In the above configuration, the CON
controls a normally closed contactor for the pressure switch power line. When the CON
is opened. When the contactor opens, power is cut from the pressure switch, which allows airflow to open the damper. When the
CON CM is deactivated, the EMS is free to control the damper. The EMS is currently being overridden by the CON
ON⁄OP
When power is cut from the pressure switch, the damper opens. When the damper completely opens, the damper open limit switch is
and the damper closed limit switch is
position of the damper closed limit switch. In this case the VER
SCS Series Manual — P/N 15712:L 7/18/16
Energy
Management
System
CON CM
ON/OP
(activated)
COM
N/O
FRM-1
Power Source
Airflow
(use 3.9K listed ELR with FZM-1)
SMOKE
DAMPER
OPEN
Figure 5.79 EP Damper Control - HVAC Switch Group Type 13
, indicating that the damper is in the
OPEN
Listed
24 VDC
Power Source
ELR-47K
N/O
COM
Limit Switch
for closed
position
and
OPEN CLOSED
CM is activated and the CON
ON⁄OP
ON⁄OP
position. The VER
OPEN
MM is deactivated because the damper is
OFF⁄CL
Ratings and Wiring Diagrams
*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.
CON CM
OFF/CL
(deactivated)
FCM-1
VER MM
OFF⁄CL
(deactivated)
FMM-1
SLC Loop
control and verification of the
CM is deactivated. The CON
OFF⁄CL
CM is activated, the normally closed contactor
ON⁄OP
MM monitors the
OFF⁄CL
.
OPEN
state,
CLOSED
CM
ON⁄OP
CM.
CLOSED
CLOSED
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