Honeywell NOTIFIER SCS Series Operation And Installation Manual page 160

Ratings and Wiring Diagrams
Power Source
1a listed
contact
1b listed
contact
Service
Disconnect
Switch
Figure 5.51 depicts a fan in an HVAC system with the capability of
In the above configuration, the CON
in the opposite state when the smoke control system is in operation and are always deactivated during normal operation. The CON
is wired in parallel with the EMS; when wired in parallel with the EMS the CM must be a relay module. When the CON
CON CM are deactivated, the EMS is free to control the fan. In this case the EMS is
OFF⁄CL
When no power is supplied to the fan, the fan is
monitors the position of the sail switch, which would indicate when the fan is
OPEN
because the fan is
OFF
the EMS is in and closes the normally open contactor, thus supplying power to the fan and turning it
vated for smoke control, the CON
in.
Type 15 is used for
ON
from switch group type 13 or switch group type 14, switch group type 15 would only be necessary for redundancy in verifying the state of
the fan. For example, if switch group type 13 is used instead of switch group type 14, the
monitor module is activated and the
types 13 or 14 also saves the use of an additional monitor module. Switch group type 15 would use two monitor modules to provide the same
verification as types 13 or 14.
160
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 5.51 Fan Control - HVAC Switch Group Type 14
CM is deactivated and the CON
ON⁄OP
OFF
due to the EMS. When the CON
CM opens the normally closed contactor and turns the fan
OFF⁄CL
and control and verification of the
OFF
state of the fan would be verified when the monitor module is deactivated. Utilizing switch group
ON
Power Source
Listed
24 VDC
Power Source
ELR-47K
Listed
Sail
Switch
N/O
COM
N/C
and control and verification of the
ON OFF
CM is deactivated. These two control modules are always
OFF⁄CL
and the sail switch is , indicating no airflow in the duct. The VER
CLOSED
CM is activated for smoke control, the CON
ON⁄OP
and state. Since it is possible to determine both
ON OFF
*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.
Listed
24 VDC
CON CM
OFF/CL
(deactivated)
FCM-1
VER MM
ON/OP
(deactivated)
FMM-1
SLC Loop
state, switch group type 14.
ON
, so no power is being supplied to the fan.
OFF
. In this case the VER
ON
ON⁄OP
CM overrides whatever state
ON⁄OP
. When the CON
ON
, overriding whatever state the EMS is
OFF
state of the fan would be verified when the
OFF
SCS Series Manual — P/N 15712:L 7/18/16
HVAC Wiring Diagrams
CM
ON⁄OP
CM and the
ON⁄OP
MM
ON⁄OP
MM is deactivated
CM is acti-
OFF⁄CL
and verification
ON OFF