Heat-Trace in Hot Water Maintenance

by Joe Hektor | Nov 27, 2017 |

Featured, SST-2 Heat Trace FAQs

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[Heat-trace is used in many aspects of everyday modern life that mostly goes unnoticed. One main example of this is the ability to access hot water quickly from any faucet in a large building no matter how far from the water heater it is. This is a...

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Power Line Noise Issues with Ground Fault Protection Equipment

Due to the high sensitivity of ground-fault-current detection circuits, it is possible that excessive line noise on the power source wiring can cause an alarm. This can occur in the form of a ground-fault alarm, a stuck-relay alarm, or a...

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New line of Heat-Trace controls

by Joe Hektor | Aug 08, 2017 |

Featured, freeze protection, heat trace

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This past July Environmental Technology released its new line of microprocessor-based heat-trace controls, replacing its already successful SST line which has been a trusted industry standard since 2011. The new GPT and FPT heat-trace controls were...

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How do I set up my GPT for a RTD sensor?

The GPT unit comes with a thermistor (two thermistors with the GPT 230) but is also compatible a 2-, 3-, or 4-wire RTD sensor. The diagram illustrates the correct wiring and DIP switch configuration for each temperature sensor wiring scheme. It is...

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Difference between 277 single phase and 277/480 3 phase unit?

The difference is the step down transformer that provides the power for the internal circuitry. On the 277 single phase the transformer is 277 VAC to 24 VAC and you will note that its primary winding is connected to the top and middle poles on the...

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Can the APS activate on temperature only?

[The APS-C series systems are designed to turn on and off, as the weather requires heat to deal with snow or icing conditions. Although a thermostatic dry contact switch can be used to override the system on for temperature only, is not recommended...

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External contactors used with the APS-4C?

No, using external contactors will cause the GFEP circuit on the APS-4C to detect the inductive load of the contactors coil as ground fault and alarm the system every time the contactor is turned on. In order to increase the size of the application,...

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Flashing supply light.

A flashing supply light indicates a missing or broken High-Temperature Limit sensor. This sensor is required to make the APS-C series controller to work. It is required on all of the APS-C series controllers.

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Delay between SC-40C and APS-4C?

by David Mays | Jul 26, 2017 |

APS-4C, APS-C Series FAQs, delay, SC-40C

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Why is there a delay between when the APS-4C turns on and when the SC-40C comes on?

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Snow light on SC-40C stays on longer than APS-4C

by David Mays | Jul 26, 2017 |

APS-4C, APS-C Series FAQs, SC-40C, snow, snow light

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The snow light stays on longer for the SC-40C than the APS-4C because the APS-4C gets its command from an actual snow sensor where the SC-40C’s get their command from the APS-4C.

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