Heat exchanger 20P- DIFF pour Viessmann - 7875503
  • Heat exchanger 20P- DIFF pour Viessmann - 7875503

Heat exchanger 20P- DIFF pour Viessmann - 7875503

41648
€162.32
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Colissimo Delivery expected from 2026-09-25

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The 20-plate heat exchanger facilitates heat transfer between the water in the heating circuit and domestic hot water, ensuring a stable and efficient hot water supply.



This component helps to ensure the reliability of the system and simplifies servicing. It ensures precise heat exchange for the long-term operation of the system.



Technical information:



  • Manufacturer’s reference: 7875503.
  • Number of plates: 20.
  • Ensures efficient heat transfer between the circuits.
  • Ensures reliable and long-lasting operation.


Correct installation ensures efficient heat transfer and guarantees that the heating system operates properly.



Safety information:

Before performing any work, switch off the power supply to the unit and shut off the water and gas systems.

Additional information:
This part is an original spare part from parts manufacturer, it is labelled and packaged under the DIFF distribution brand

Features of product: HEAT EXCHANGER 20P- DIFF POUR VIESSMANN - 7875503

Package Weight (kg)
1.033
Package Height (m)
0.08
Package Width (m)
0.09
Package Length (m)
0.24

Maintaining a Viessmann Boiler: Preserving Efficiency and Stability

A Viessmann boiler relies on a coherent system: heat exchanger, hydraulics, and regulation. During a breakdown or maintenance, functional compatibility is essential. An unsuitable part can lead to temperature fluctuations, short cycles, communication failures, or a significant drop in efficiency.

Viessmann DIFF° spare parts cover the most critical components: heat exchange, hydraulic elements, sensors, regulation, and safety devices. The goal is to restore stable operation, conforming to original parameters, without modification of the system.

Key Components for Effective Maintenance

Depending on the diagnosis, several parts are often involved:

  • Sensors and Probes: essential for accurate measurement and stable regulation (temperature, pressure).

  • Electronic Boards: in case of command, display, or communication failures between modules.

  • Exchangers / Hydraulic Components: to maintain effective thermal transfer and avoid performance losses.

Properly Identify Your Viessmann Model

To select the right part, rely on the exact reference of the boiler (nameplate) and, if possible, the reference printed on the original component. Versions may vary depending on the year and series.

Technical Advice: on condensing boilers, also check the environment (condensates, humidity): parts suitable for condensation constraints prevent repetitive breakdowns.

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