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FPT-130 INSTALLATION MANUAL |
PART NO.
25165
REV
F
6
FIGURE 6. External alarm connection
TEMPERATURE SENSOR
Thermistor (25076)
The FPT 130 comes with a thermistor temperature sensor
with a 20 ft. jacketed cable that has an operating range
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proper wiring for the thermistor sensor.
EXTERNAL ALARM
Alarm Connections
An alarm or power–off condition can be communicated
by either opening or closing a relay contact. It is important
to make the proper alarm relay connections to achieve
the desired result. The middle terminal labeled COM
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one alarm relay lead to the COM terminal.
If the system needs a contact to close to signal an alarm or
power–off condition, connect the other alarm relay lead
to the
NC (Normally Closed)
terminal. See Figure 6.
If the system needs a contact to open to signal an alarm or
power–off condition, then connect the other alarm relay
lead to the
NO (Normally Open)
terminal.
If the unit has power, and there are no alarm conditions
then the NO and COM terminals will be connected. If the
unit loses power or an alarm condition occurs then the
NC and COM terminals will be connected.
Note:
The “Normally” condition of the relay is the alarm
condition for the unit.
FIGURE 4.
Connection
Schematic
FIGURE 5. Thermistor sensor connection
Wiring to
Normally Closed
alarm contact
Heat Tracing Sales Mt. Airy, MD (410) 795-2223 www.heattracingsales.com
Heat Tracing Sales Mt. Airy, MD (410) 795-2223 www.heattracingsales.com
