Honeywell NOTIFIER SCS Series Operation And Installation Manual page 183

HVAC Wiring Diagrams
Power
Source
1b listed
contactor
Pneumatic
PRESSURE
Power
Return
Figure 5.75 depicts an EP damper in an HVAC system with the capability of
type 9. In the above configuration, the CON
switch power line. When the CON
from the pressure switch, which allows airflow to open the damper. When the CON
damper. The EMS is currently being overridden by the CON
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
CON
ON/OP
(activated)
COM
FRM-1
Airflow
Tubing
SMOKE
DAMPER
OPEN
SWITCH
Figure 5.75 EP Damper Control - HVAC Switch Group Type 9
ON⁄OP
CM is activated, the normally closed contactor is opened. When the contactor opens, power is cut
ON⁄OP
, indicating that the damper is in the
OPEN
Energy
Management
System
CM
N/O.
Listed
24 VDC
Power Source
ELR-47K
(use 3.9K listed ELR with FZM-1)
N/O
COM
Limit Switch
for closed
position
OPEN
CM is activated. The CON
ON⁄OP
CM.
ON⁄OP
MM is deactivated because the damper is
OFF⁄CL
*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.
VER
OFF⁄CL
(deactivated)
FMM-1
control and verification of the
CM controls a normally closed contactor for the pressure
CM is deactivated, the EMS is free to control the
ON⁄OP
position. The VER
OPEN
OFF⁄CL
Ratings and Wiring Diagrams
MM
SLC Loop
state, switch group
CLOSED
CLOSED
MM monitors the
CLOSED
.
OPEN
183