vaso expansion caldera viessmann 7828646 sauermann Uneven baking of the bread

Uneven baking of the bread after the cycle

LT308925270582

AIC20B ALTUS

Power Range: 0

The main reference is 4681JB1027H

vaso expansion caldera viessmann 7828646 sauermann Uneven baking of the breadThe expansion vessel is a fundamental component in heating boilers. Its main function is to absorb the volume variations of the water as it heats up, thus preventing excessive pressure increases that could damage the hydraulic circuit. This Viessmann expansion vessel model 7828646 is designed to maintain stable pressure and protect the boiler from possible leaks or internal damage. What problem does this replacement part solve? Unstable or excessive