Plate heat exchanger 12 plates- DIFF pour Viessmann - 7828745
  • Plate heat exchanger 12 plates- DIFF pour Viessmann - 7828745

Plate heat exchanger 12 plates- DIFF pour Viessmann - 7828745

41630
€100.37
Quantity

Colissimo Delivery expected from 2026-09-25

Available

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  • ✓ Free returns within 30 days
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DIFF DHW heat exchanger for boilers

With the DIFF plate heat exchanger, you can replace a defective DHW heat exchanger in a boiler. This product meets the specifications of the original part: the quality and performance of the heating part are guaranteed.

This Viessmann boiler part is suitable for 16 models, variants of the Viessmann Vitopend 100 and Viessmann Vitodens 100 boilers.

Domestic hot water heat exchanger for Vitopend and Vitodens

The DIFF 41630 part, which corresponds to the Viessmann 7828745 plate heat exchanger, is fitted to Vitopend 100-W boiler models (WH1D, WH1D).

It is also suitable for other Viessmann Vitopend 100-W boiler models: Vitopend 100 WB1B, WB1C.

This part for Viessmann boilers enables you to perform quick repairs or build up a servicing stock various Viessmann boilers.

Purpose of the DHW heat exchanger

The DIFF hot water heat exchanger for the Viessmann 7828745 uses the heat released from the heating circuit to heat a domestic water supply, thereby converting it into hot water.

While the heat exchanger transfers the heat generated by the combustion of gas to the heating system, the domestic hot water heat exchanger uses the heat from the heating system to produce domestic hot water.

Consisting of a number of plates, in this case 12, this DIFF hot water heat exchanger for Viessmann boilers uses the principle of heat transfer between the two circuits.

Hot water is delivered to household mixer taps thanks to this process occurring in the DHW heat exchanger.

Heating system product, boiler part, DHW heat exchanger

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: PLATE HEAT EXCHANGER 12 PLATES- DIFF POUR VIESSMANN - 7828745

Package Weight (kg)
0.721
Package Height (m)
0.079
Package Width (m)
0.238
Package Length (m)
0.09
Number
1

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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