Viessmann
Viessmann Plate Heat Exchanger 7826465
Viessmann 7826465 plate heat exchanger for Vitodens 200-W 26 kW combi boilers.
At a glance
- Also known as 2320816
£222.40
£185.33 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Viessmann Plate Heat Exchanger, part number 7826465, is a brazed plate heat exchanger used in Vitodens 200-W combi boilers. It transfers heat from the primary heating circuit to the domestic hot water circuit, so it sits at the centre of hot water production on a combi appliance. The unit is replaced as a complete assembly as part of domestic hot water fault diagnosis and repair.
Signs this part needs replacing
- Domestic hot water runs hot then cold, or fluctuates at the tap while the heating circuit behaves normally
- Reduced hot water flow rate at the outlets compared with the appliance's usual performance
- Hot water temperature lower than the setpoint, even with the boiler firing correctly
- Water weeping from the plate pack area or from the connections to the exchanger
- Scale or debris build-up restricting flow through the plate channels on hard water supplies
Before you order
- Confirm the appliance model and serial number match one of the fitment listings above
- Check the boiler is the 26 kW combi variant of the Vitodens 200-W range
- Verify the existing part number 7826465 on the unit being replaced
- Isolate and drain the appliance in line with the manufacturer's instructions before removal
Compliance
| Alternative numbers | 2320816 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 200-W B2KA 26 KW COMBI SERIAL No. 7454870 | 47-819-28 | 47-819-28 | — | — |
| VIESSMANN VITODENS 200-W WB2B 26KW SERIAL No. 7248825 | 47-819-09 | 47-819-09 | — | — |
| VIESSMANN VITODENS 200-W WB2C 26KW SERIAL No. 7424987 | 47-819-09 | 47-819-09 | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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