Hvac Wiring Diagrams; 1: Fans - Honeywell NOTIFIER SCS Series Operation And Installation Manual

Ratings and Wiring Diagrams

5.5 HVAC Wiring Diagrams

5.5.1 Fans
Power Source
Listed contact for
Energy
Management
System
Service
Disconnect
Switch
Figure 5.41 depicts a fan in an HVAC system with the capability of verifying the
the EMS is deactivated. The EMS controls a normally closed contactor which switches power to the fan. When power is not being supplied
to the fan, the fan is
of the sail switch, which would indicate when the fan is
switch is .
CLOSED
150
Energy Management System
(use 3.9K listed ELR with FZM-1)
FAN OFF
Power Return
Figure 5.41 Fan Control - HVAC Switch Group Type 1
and the sail switch is
OFF CLOSED
Listed
24 VDC
Power Source
ELR-47K
Listed
Sail
Switch
N/O
COM
N/C
OFF
, indicating no airflow in the duct. The VER
. In this case the VER
OFF
OFF⁄CL
VER MM
OFF/CL
(activated)
FMM-1
SLC Loop
state, switch group type 1. In the above configuration,
MM monitors the
OFF⁄CL
MM is activated because the fan is
SCS Series Manual — P/N 15712:L 7/18/16
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.
position
CLOSED
and the sail
OFF