13. Setting the Blending Ratio
The system softens the raw water to 0 °dH.
We recommend following the advice of manufacturers of appliances such as boilers. If a
specific water hardness is indicated, it may be necessary to mix the softened water with raw
water to achieve the recommended hardness.
Option 1 - Integrated blending valve on the
control valve
By turning the adjustment screw, you change
the blending with raw water.
Turning clockwise: Water hardness increases.
Turning counterclockwise: Water hardness
decreases.
We recommend blending via the mounting block for more accurate results.
Additionally, the mounting block is made of brass, making it more durable.
Check the water hardness at a tap point (sample tap on the mounting block) near the system using a
water hardness test kit (titration solution). Always measure water hardness with cold water, as hot
water flows through heating elements and softens only gradually.
Depending on the distance to the tap point, it may take some time before the newly blended water
hardness can be measured. (For this reason, measure directly at the sample tap on the mounting
block.) It is best to turn the nearest tap halfway open and adjust the water hardness accordingly.
Option 2 (Recommended) - Slotted screw
on the mounting block
Slotted screw for
residual hardness
adjustment
By turning the slotted screw, you change the
blending with raw water.
Turning counterclockwise: Water hardness
increases.
Turning clockwise: Water hardness decreases.
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