Honeywell NOTIFIER SCS Series Operation And Installation Manual page 157

HVAC Wiring Diagrams
Power Source
1a listed
contact
Service
Disconnect
Switch
Figure 5.48 depicts a fan in an HVAC system with the capability of
above configuration, the CON
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
flow in the duct. The VER
VER MM is deactivated because the fan is
ON⁄OP
whatever state the EMS is in and closes the normally open contactor, thus supplying power to the fan and turning it
Switch group type 11 is for a fan that would require the capability of
sible to determine this information from either switch group type 9 or switch group type 10, switch group type 11 would only be necessary
for redundancy in verifying the state of the fan. For example, if switch group type 9 is used instead of switch group type 11, the
the fan would be verified when the module is activated and the
Utilizing switch group types 9 or 10 also saves the use of an additional monitor module. Switch group type 11 would use two monitor mod-
ules to provide the same verification as types 9 or 10.
SCS Series Manual — P/N 15712:L 7/18/16
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 5.48 Fan Control - HVAC Switch Group Type 10
CM is deactivated. The CON
ON⁄OP
ON⁄OP
MM monitors the
OPEN
ON⁄OP
due to the EMS. When the CON
OFF
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 the
ON⁄OP
CM is deactivated, the EMS is free to control the fan. In this case the EMS is
position of the sail switch, which would indicate when the fan is
ON⁄OP
control and verification of both the
ON
state of the fan would be verified when the monitor module is deactivated.
ON
Ratings and 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
ON/OP
(deactivated)
FMM-1
SLC Loop
state, switch group type 10. In the
ON
and the sail switch is
OFF CLOSED
CM is activated, the CON
ON⁄OP
ON
and
ON OFF
,
OFF
, indicating no air-
. In this case the
ON
CM overrides
.
states. Since it is pos-
state of
OFF
157