Honeywell NOTIFIER SCS Series Operation And Installation Manual page 171

HVAC Wiring Diagrams
Damper Damper
Open Closed
Power Power
AC
MOTOR
Power Return
Figure 5.62 depicts a motorized damper in an HVAC system with the capability of
state, switch group type 11. In the above configuration, the CON
mally closed contactor for the damper closed power line, and a dual normally open/normally closed contactor for the damper open power
line. When the CON
closed power line), the normally closed portion of the dual contactor is opened (cutting any power supplied by the EMS to the damper open
power line), and the normally open portion of the dual contactor is closed, thus supplying power to close 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 supplied to the damper open power line, the damper opens. When the damper completely opens, the damper open limit
switch is , indicating that the damper is in the
CLOSED
The VER MM monitors the
OFF⁄CL
of the damper open limit switch. In this case the VER
.
OPEN
SCS Series Manual — P/N 15712:L 7/18/16
1a, 1b listed contact
1b listed
contact
(use 3.9K listed ELR with FZM-1)
DAMPER
OPEN
Figure 5.62 Motorized Damper Control - HVAC Switch Group Type 11
CM is activated, the normally closed contactor is opened (cutting any power supplied by the EMS to the damper
ON⁄OP
position of the damper closed limit switch and the VER
CLOSED
Power Source
Energy
Management
System
ELR-47K
Limit Switch
for open
position
N/O
COM
N/O
COM
Limit Switch
for closed
position
OPEN
CM is activated. The CON
ON⁄OP
position.
OPEN
MM is deactivated and the VER
OFF⁄CL
Ratings and Wiring Diagrams
Listed
24 VDC
Power Source
CON CM
ON/OP
(activated)
FCM-1
*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
VER MM
and type H
ON⁄OP
(activated)
modules.
FMM-1
VER MM
OFF/CL
(deactivated)
FMM-1
SLC Loop
control and verification of the
CM controls two contactors: a nor-
ON⁄OP
MM monitors the
ON⁄OP
MM is activated because the damper is
ON⁄OP
and
OPEN CLOSED
CM.
ON⁄OP
position
CLOSED
171