CONTACT US

What are the SST-2 striped wires for?

by | Jul 26, 2017 | SST-2 Heat Trace FAQs

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. Before connecting the alarm...

Supply light flashing on SST-2

by | Jul 26, 2017 | SST-2 Heat Trace FAQs

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. Click here to view...

What is the maximum load for the SST-2?

by | Jul 26, 2017 | SST-2 Heat Trace FAQs

Supply Voltage The SST-2 fixed set point thermostat operates from 120, 208, 240 or 277 VAC at 50/60 Hz. For line supply and load connections, use 10 AWG or larger wires rated for at least 75°C (167°F) at 300 VAC. Contactor Rating The heater contactor provides two (2)...

Temperature set point on SST-2

by | Jul 26, 2017 | SST-2 Heat Trace FAQs

For the SST-2 the temperature set point is either 40 °F (4.44 °C) or 175 °F (79.44 °C) depending on the particular model being used. The set point is the temperature the unit uses for switching on and off with a 2 °F deadband. For the 40 °F (4.44 °C) model the unit...

Can I shorten or extend the sensor wire?

by | Jul 26, 2017 | SST-2 Heat Trace FAQs

Yes, the length of the sensor wire can be shortened or extended as long as: Extending the sensor wire – The sensor wire can be extended up to 500 feet with #18 awg wire and 2000 feet with #12 awg wire. Click here to see more about sensor placement. Shortening...