Honeywell NOTIFIER SCS Series Operation And Installation Manual page 189

HVAC Wiring Diagrams
1b listed
contactor
1a listed
contactor
Pneumatic
Tubing
PRESSURE
SWITCH
Power
Return
Figure 5.81 depicts an EP damper in an HVAC system with the capability of
state, switch group type 15. In the above configuration, the CON
CLOSED
CON CM controls a normally closed contactor for the pressure switch power line. When the CON
ON⁄OP
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
CON CM.
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 open limit switch and the VER
case the VER MM is activated and the VER
ON⁄OP
SCS Series Manual — P/N 15712:L 7/18/16
CON CM
ON/OP
(activated)
COM
FRM-1
Power Source
Airflow
SMOKE
DAMPER
OPEN
Figure 5.81 EP Damper Control - HVAC Switch Group Type 15
CM is deactivated, the EMS is free to control the damper. The EMS is currently being overridden by the
, indicating that the damper is in the
OPEN
OFF⁄CL
Energy
Management
System
Listed
N/O
24 VDC
Power Source
ELR-47K
(use 3.9K listed ELR with FZM-1)
Limit Switch
for open
position
N/O
COM
N/O
COM
Limit Switch
for closed
position
OPEN
CM is activated and the CON
ON⁄OP
OPEN
MM monitors the
CLOSED
OFF⁄CL
MM is deactivated because the damper is
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
ON⁄OP
(activated)
FMM-1
VER MM
OFF⁄CL
(deactivated)
FMM-1
and control and verification of the
CLOSED
OFF⁄CL
CM is activated, the normally
ON⁄OP
position. The VER MM monitors the
ON⁄OP
position of the damper closed limit switch. In this
.
OPEN
SLC Loop
and
OPEN
CM is deactivated. The
CLOSED
CLOSED
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