Video: Aprilaire 4217 Pad Frame Scale Control Insert

Aprilaire 4217 Pad Frame Scale Control Insert Product Information and Installation Assembly
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Video Home » Aprilaire 4217 Pad Frame Scale Control Insert

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I'm Jay, and this is the Aprilaire 4217 scale control insert, commonly called a filter or a pad frame. It is located on the inside of the humidifier, and surrounds the water panel. The purpose of the frame, is to prevent mineral build up, inside of the humidier cabinet, and devote excess water to the drain. The distribution tray on top of the pad frame is available seperately. The pad frame should be replaced every 5 to 8 years, sooner, if the frame is cracked or damaged. This item is also available as part of the maintenance kit for your model. 


Replacement is easy, here's how. Be sure to turn the power off, before performing any maintenance. Before performing this service, it is necessary to shut off the water. Find the saddle valve, turn it clockwise, until it stops. 


These components are common to most Aprilaire humidifiers. The parts in your model, may look slightly different, but the assembly procedure is simillar. The plastic component should be washed using mild soap and water, prior to replacing the water panel. The panel must be replaced annually. On the back of the box are clearly printed instructions for your model. The spray paint mark indicates the top. Let's slide this together. You'll notice notches. These notches lign up with the tabs on the distribution tray. We'll snap that together. Now the assembly is complete. This side here with the little hole in it will go towards the inside of the humidifier. And this side will go towards the furnace or duct work. 



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