Heat Trace and Hoppers

by Joe Hektor | Apr 04, 2018 |

Featured, heat, moisture, system

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Many industries that use hoppers utilize heat trace to aid in material flow. Hoppers are elevated storage containers that contain and dispense granular materials. Commonly used in agriculture hoppers are also used in industries such as plastics,...

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Can I simulate a sensor call for heat?

Yes, you can simulate a sensor call for heat to test the system by putting a jumper between pins 1 and 2 of the class two terminal blocks, the system will respond as if the sensor were seeing snow conditions. The snow and heat indicators will come...

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High Temperature Limit dial not turning unit on?

by David Mays | Jul 26, 2017 |

APS-C Series FAQs, heat, High-temperature dial, on

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Why doesn’t adjusting the High Temperature Limit dial turn the unit on?

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Where do I connect the sensor wires to?

The sensor wires are connected to the blue #18 awg wires in the low voltage section. The sensor is not polarized so it does not matter which sensor wire goes to which blue wire.

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Where should the temperature sensor be located?

Ideally, the temperature sensor should be located on the pipe on the opposite side from the heater. If this is not possible the sensor can be used as an ambient temperature sensor although it will be less efficient.

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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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I occasionally get a high pressure alarm

A high pressure alarm can sometimes occur due to solar gain which is where a portion of the waveguide is exposed to direct sunlight during the heat of the day. The air inside the waveguide expands as it gets hotter causing a rise in pressure.

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Can I simulate a sensor call for heat to test the system?

by David Mays | Jul 21, 2017 |

contactor, EUR-5A FAQs, heat, Jumper, LED, sensor, terminals, wire

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Yes, to test the system by simulating a sensor call for heat, connect a short jumper wire between terminal block terminals 25 (sensor signal) and 24 (sensor ground). Now the Heat LED should turn on within 10 seconds and the control relay should...

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When the system was installed the high temperature sensor was not installed, can I still make the unit work?

The High Temperature limit sensor is intended for two purposes, either as a slab sensor when the EUR-5A is used for heating sidewalks, patios or drives ways or for ambient air temperature when the unit is used for roof and gutter melt systems.

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En-Lightening APS-4C and SC-40C

Environmental Technology Inc.'s David Mays shares his insights on specific or unanticipated situations end users encounter with their ETI products. Here he illuminates the tricky mix of APS-4C and SC-40C status lights and system operations.

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