MUC IOM
7
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P a g e
Electrical
The MUC may be wired for different applications. Review the supplied wiring diagram(s)
and verify the application before attempting to connect the MUC to any associated
components or equipment. Follow all local electrical and safety codes, as well as the
National Electrical Code (NEC) and the National Fire Protection Agency (NFPA), where
applicable. Follow the Canadian Electric Code (CEC) in Canada.
Note:
Use 18 AWG shielded wire for all low voltage connections. Do not locate the
device wires in the same conduit with high voltage wiring or used to supply
inductive loads such as motors.
Disconnect the power supply before making any connections to prevent electrical shock
or equipment damage. Follow proper electrostatic discharge (ESD) handling procedures
when installing the device or equipment damage may occur.
24 VDC From GFS Pressure Switch
24 V
To Fan Motor Speed Input
Damper
Relay
ENABLE
Gas
Relay
Green LED (RUN)
Red LED (Fail)
Battery Tray
Audio Mute Switch
Audio Buzzer
Slide Control Potentiometer
Cut Out
COM
POT
MSTAT
Damper
Gas
COM
COM
N.C.
N.C.
N.O.
N.O.
24 VDC From Remote Unit
Common
24 VDC From Power Supply
BATT
ON
OFF
Battery Enable Jumper Select
RPM BYPASS Enable
Jumper Select
PROVER
+5V
RPM
Motor Status Feedback Voltage
5 VDC To Motor
Motor RPM Feedback Signal
RPM BYPASS
ON
OFF
Figure 2
