Honeywell NOTIFIER SCS Series Operation And Installation Manual page 182

Ratings and Wiring Diagrams
Power
Source
1b listed
contactor
Pneumatic
PRESSURE
Power
Return
Figure 5.74 depicts an EP damper in an HVAC system with the capability of
the CON CM is activated. The CON
ON⁄OP
CON C M is activated, the normally closed contactor is opened. When the contactor opens, power is cut from the pressure switch,
ON⁄OP
which allows airflow to open the damper. When the CON
rently being overridden by the CON
182
CON
ON/OP
(activated)
COM
FRM-1
Airflow
Tubing
SMOKE
DAMPER
OPEN
SWITCH
Figure 5.74 EP Damper Control - HVAC Switch Group Type 8
CM controls a normally closed contactor for the pressure switch power line. When the
ON⁄OP
CM.
ON⁄OP
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 deactivated, the EMS is free to control the damper. The EMS is cur-
ON⁄OP
*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 MM
OFF⁄CL
(deactivated)
FMM-1
control, switch group type 8. In the above configuration,
SCS Series Manual — P/N 15712:L 7/18/16
HVAC Wiring Diagrams
SLC Loop