De Dietrich 82275500 GT 210 rear section

This article is a rear section for a De Dietrich GT 210 heat exchanger, catalogue number 336.709.001. In a sectional heat exchanger, the rear section forms the end of the block, opposite the front section where the burner mounts. It contains the final flue gas passages and the outlet connection to the flue system. Heat exchangers of this type transfer energy from hot flue gases to the heating water; a secondary plate heat exchanger inside the same appliance produces domestic hot water. Turbulators fitted in the flue ways slow the gas flow to improve heat absorption. When selecting a replacement rear section, the critical factors are the specific model designation (here GT 210), the number of sections in the original block, and the connection dimensions. The material—cast iron or aluminium alloy—and the gasket profile must match the existing assembly. Typical failure modes for such sections include scaling on the water side, soot accumulation on the gas side, and gasket deterioration leading to leaks. In condensing appliances, condensate corrosion can occur at low points where moisture collects. During replacement, inspect the mating surfaces for damage, confirm the correct gasket type is used, and ensure the section is aligned correctly to avoid stress on the block.