Honeywell NOTIFIER SCS Series Operation And Installation Manual page 156

Ratings and Wiring Diagrams
Power Source
1a listed
contact
Service
Disconnect
Switch
Figure 5.47 depicts a fan in an HVAC system with the capability of
above configuration, the CON
the EMS the CM must be a relay module. When the CON
, so no power is being supplied to the fan. When no power is supplied to the fan, the fan is
OFF
no airflow in the duct. The VER
this case the VER
OFF⁄CL
overrides whatever state the EMS is in and closes the normally open contactor, thus supplying power to the fan and turning it on.
156
Energy Management System
CON CM
ON/OP
(deactivated)
COM
N/O.
FRM-1
(use 3.9K listed ELR with FZM-1)
FAN OFF
Power Return
Figure 5.47 Fan Control - HVAC Switch Group Type 9
CM is deactivated. The CON
ON⁄OP
MM monitors the
OFF⁄CL
MM is activated because the fan is
Listed
24 VDC
Power Source
ELR-47K
Listed
Sail
Switch
N/O
COM
N/C
control and verification of the
ON
CM is wired in parallel with the EMS; when wired in parallel with
ON⁄OP
CM is deactivated, the EMS is free to control the fan. In this case the EMS is
ON⁄OP
position of the sail switch, which would indicate when the fan is
CLOSED
due to the EMS. When the CON
OFF
HVAC 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.
VER MM
OFF/CL
(activated)
FMM-1
SLC Loop
state, switch group type 9. In the
OFF
and the sail switch is
OFF CLOSED
CM is activated, the CON
ON⁄OP
SCS Series Manual — P/N 15712:L 7/18/16
, indicating
. In
OFF
CM
ON⁄OP