What are the SST-2 striped wires for?

by David Mays | Jul 26, 2017 |

external alarm, SST-2, striped wires, SST-2 Heat Trace FAQs

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The #18 awg striped wires are to the SST-2 to an external alarm. The SST-2 uses a summary alarm, which will give an alarm for four different reasons: loss of power, failed temp sensor, ground fault test failure and a ground fault alarm.

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Supply light flashing on SST-2

A flashing supply light means that the temperature sensor is either missing or bad. Ensure that the sensor is correctly wired to the two blue wires. The system will not function without a sensor. Click here to see more about the Temperature sensor.

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What is the maximum load for the SST-2?

Supply Voltage

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I have power to the unit and the lights come on but I do not get power to the heaters. (Units sold before 2015)

by Joe Hektor | Jul 26, 2017 |

connected, Controller, heaters, red, SST-2, SST-2 Heat Trace FAQs, White, wire

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When wiring the SST-2 the white and red wires of the controller must be wired together for the unit to have power. This is regardless of the voltage applied to the unit. The white wire powers the controller and the red wire goes to the contact of...

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Can I run the heater cable into the APS housing?

This depends on what you are calling heater cable. Most heat cable has two segments the heat tape and the cold wire. These are usually spliced together in either a high-temperature box or as an in line splice.

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Why do I have a red GFEP light on?

The GFEP indicator will come on when a ground fault occurs in one of the heater circuits. The insulating resistance of the heater cable is breaking down or the cable has been damaged allowing current to pass to ground thru an incorrect pathway. Left...

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