FAQ - Frequently Asked Questions
We are happy to share our knowledge of everything related to electric heating and resistors, whether it concerns heating components or control solutions.
In our FAQ, our experts answer your questions.
Didn’t find the answer you were looking for?
Where can I find the article number, power rating, and voltage on my product?
Depending on the product, the marking is usually located on the flange or the heating element, or alternatively on the tube. The exact location varies between models, but the information can be found on one of these parts.
Which immersion heater is needed for a K11A?
A K11A is a terminal box and can be used with different types of immersion heaters. To get help identifying which immersion heater is installed in your water heater, we recommend contacting the manufacturer of your system.
The thermostat and overheat protection in my terminal box are broken. Can I just replace them?
Yes, it is possible to replace only the thermostat or the overheat protection in the terminal box. Contact an authorized electrician who can carry out the replacement safely.
Do you provide service for older products?
Our products are designed for harsh environments, but even the best equipment may require maintenance over time. We perform service and refurbishment on a wide range of product types, supporting everything from replacement of wear parts and control system upgrades to inspection and testing - helping to extend the service life of your heating equipment.
Are all products in stock?
No, but we carry a wide range of standard products, such as immersion heaters, tubular elements, terminal boxes, and flow-through heaters. You can find our standard assortment in our product catalog.
Does Backer manufacture customized products and components?
Yes, Backer is Sweden’s largest manufacturer and supplier of tubular heating elements. In addition to our standard product range, we also offer customized products and technical solutions in specific sizes, power ratings, temperature ranges, and control specifications to meet individual requirements. Please contact us and we will be happy to assist you.
Are immersion heaters and over the side immersion heaters the same thing?
Yes, in principle they are very similar. Both are devices used to heat different types of liquids, where electricity passes through metal heating elements that in turn heat the water. Immersion heaters can, for example, be used to generate heat in boilers and buffer tanks when no other heat source is available. Over the side immersion heaters consist of well-insulated heating elements that are placed directly in the liquid and transfer heat to it.
What different designs of flow-through heaters can Backer offer?
The tank is generally manufactured in stainless steel, grade 1.4301. For the heating element tubes, we can offer several different stainless-steel grades, such as 1.4404, 1.4547, and 2.4858 (Incoloy 825). In addition, we can supply thermal insulation, cabling, air vent valves, thermostats/overheat protection, NTC thermistors, cable glands, sacrificial anodes, and more.
Which materials can you manufacture flanged immersion heaters from?
For the heating element tubes that are in direct contact with the medium, we offer several options depending on the application. The most commonly used materials are acid-resistant stainless steel (1.4404) and Incoloy 800 (1.4876).