De Dietrich 7606290 turbulator CABK 20-25

This is a De Dietrich 7606290 turbulator, listed under catalogue article 336.841.013 for the CABK 20-25 series. Turbulators of this type are installed inside the flue gas passages of the heat exchanger. Their function is to slow the flow of hot flue gases, increasing the contact time with the heat exchanger surfaces and improving thermal transfer to the water side. In systems that also incorporate a secondary plate heat exchanger for domestic hot water, efficient heat uptake from the primary exchanger is essential. Parts of this type are selected strictly by model-specific dimensions and the geometry of the flue ways. The material—typically stainless steel, aluminium alloy, or copper—must match the design of the original turbulator. The gasket type, if present, also matters for sealing. When replacing a turbulator, inspect the flue ways for soot buildup and the water side for scaling, both of which reduce performance. In condensing appliances, check for corrosion where condensate collects. A missing or damaged turbulator will reduce boiler efficiency and may cause higher flue gas temperatures. Ensure that the replacement turbulator matches the original in shape and number of plates before fitting.