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Nordyne-Miller Electric Furnace 10kw Heat-Strip Element
Rob 'Doc' Falke Jan 01, Since the cold has set in, we've received many calls and e-mails from contractors and technicians wresting with electric heat systems. The two main concerns are: How to determine and rate electric heater performance; and how to figure the right amount of airflow to safely increase or decrease supply air temperatures. Equipment nameplates often list only the Kilowatt Kw rating of the heating elements or Heat Strips.
How to Test an Electric Heat Strip in an Air Handler
If the element stays red hot long enough, or enough times, the element will burn into two pieces. Sometimes the ceramic insulators that hold the element in place will crack and fall apart. To test and replace an electric heat strip, or its element, in an HVAC air handler a technician must have a basic knowledge of electrical principles and safety. The number one rule when working with electricity is - if you are not sure, do not do it and call someone who does know. Working with electricity is unforgiving and the results of an accident happen immediately.
Steel strip heaters are an excellent industrial heating product and can be easily controlled by using a temperature controller such as a mechanical thermostat or a cost effective bimetal thermostats that can be installed on the surface you are heating. Mounting holes are useful to mount the process heaters securely on almost any surface with terminal extending from the sheath for easy electrical connections. Many users also request lead wires that extend from one end that make the installation more flexible as the temperature control panel is easily adaptable to this configuration.