Primary heat exchanger Viessmann 7825511

Primary heat exchanger Viessmann (art. 7825511) — original spare part for wall-mounted gas boilers Viessmann Vitopend 100-W series WH1B and WH1D with power 30 kW. Consists of 98 copper lamellas, ensuring efficient heat transfer from the burner to the coolant in the heating system. Compact dimensions (length 310 mm, width 180 mm) and threaded connections simplify installation and replacement without additional modifications. Made of high-quality materials resistant to corrosion and high temperatures, guaranteeing a long service life. Ideal for restoring the functionality of Viessmann boilers, ensuring reliable and efficient operation of the heating system.