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For optimal water treatment, YARNA is best installed near the water meter or at the main water supply. Make sure you have access to a power outlet. Our power adapter has 5ft (1.5m) of cable.

The impulse band windings can be placed on the left side, on the right side or underneath the command unit. Leave a safe distance of at least ½" (1 cm) between the two bands. ​

The main unit should be installed on the wall. If unavailable, you can place it on the water pipe. Depending on the surface you can choose between fixing it with screws or using the double-sided adhesive tape. The position relative to the pipe is not important.

In case of limited space, the windings can be placed partly on the main pipe and partly on the distributor pipe. All these different installations are possible because the treatment impulses extend over several meters to either side of the pipes. Please observe different placement examples, shown in the images to the right.

The unit is effective up to 1.2 miles from the installation point along your pipe system. Depending on ambient temperatures this effect can last up to 7 days after water exits your pipe system. Minerals remain in the water as ions. This prevents soaps and oils to stick to your skin or solid surfaces.

Your YARNA water softener WILL NOT make your water potable.

 Your YARNA water softener is suitable for all pipe materials: iron, copper, plastic, stainless steel, PVC, compound pipes, PE-X, etc.

 Each of the two cables inside your package has a total length of 51" (130cm). Out of that a maximum of  39" need to be wound on the pipe, the rest is used to facilitate the installation of the main unit at a distance from the pipe.

 Protect the electronic unit and the power supply against direct water. The unit is IP44 rated (splash proof) and although there is no risk of short or fire, water can damage the electronics. Use the provided electronic power adapter only.

 Do not cut the impulse bands nor the 24V power cord of the power supply unit.

 Do not remove the PVC insulation of the wires. Clean the device with water only using a soft cloth.

 The operating temperature of YARNA ranges from -13°F to 122°F (–25°C to +50°C).

 This water softener is suitable to use on pipes with a maximum diameter of 2”.



1. Secure the main unit to the wall by using the screws inside or the double sided adhesive tape. You can also attach the unit to the water pipe using the sticky tape. This device will work by installing it on the outside of the main pipe, therefore no tools are required during the installation process.

2.Connect one of the impulse bands to the device and use a Velcro strap to secure the impulse band to the pipe.

3.Wind the impulse band around the pipe producing a coil. Make sure you wind the band tightly to the pipe and place the windings close to each other. Latch the end of the impulse band to the pipe using another zip tie. Now repeat steps 2 and 3 with the second impulse band.

4.Time to power up the unit. First plug the power adaptor to the main unit, and then connect the power supply to an electrical outlet. The power adapter has a LED light that must be visible. Also each USB has a blue diagnostic light that will come on, showing that both impulse bands are operating normally. Your YARNA water softener works from now on maintenance-free.