Honeywell NOTIFIER SCS Series Operation And Installation Manual page 167

HVAC Wiring Diagrams
1a, 1b
listed
contact
Damper
Open
Power
MOTOR
Power Return
Figure 5.58 depicts a motorized damper in an HVAC system with the capability of
state, switch group type 7. In the above configuration, the CON
mally closed contactor for the damper open power line and a dual normally open/normally closed contactor for the damper close power line.
When the CON
OFF⁄CL
power line), the normally closed portion of the dual contactor is opened (cutting any power supplied by the EMS to the damper closed power
line), and the normally open portion of the dual contactor is closed, thus supplying power to close the damper. When the CON
deactivated, the EMS is free to control the damper. The EMS is currently supplying power to the damper closed power line.
When power is supplied to the damper closed power line, the damper closes. When the damper completely closes, the damper closed 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
.
CLOSED
SCS Series Manual — P/N 15712:L 7/18/16
1b listed contact
Damper
Closed
Power
DAMPER
CLOSED
AC
Figure 5.58 Motorized Damper Control - HVAC Switch Group Type 7
CM is activated, the normally closed contactor is opened (cutting any power supplied by the EMS to the damper open
position of the damper closed limit switch and the VER
CLOSED
Energy
Management
System
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
CM is deactivated. The CON
OFF⁄CL
position.
CLOSED
MM is activated and the VER
OFF⁄CL
Ratings and Wiring Diagrams
Power Source
Listed
24 VDC
Power Source
CON
OFF/CL
(deactivated)
FCM-1
VER MM
ON⁄OP
(deactivated)
FMM-1
VER MM
OFF/CL
(activated)
FMM-1
control and verification of the
CLOSED
CM controls two contactors: a nor-
OFF⁄CL
MM monitors the
ON⁄OP
MM is deactivated because the damper is
ON⁄OP
CM
*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.
SLC Loop
and
OPEN CLOSED
CM is
OFF⁄CL
position
CLOSED
167