Viessmann
Viessmann Connection Hydroblock 7825933
Hydroblock connection (WW) for Viessmann Vitodens WB1A combi and system boilers, manufacturer part number 7825933.
At a glance
- Appliance family: Vitodens WB1A
- Also known as 2320098
£59.16
£49.30 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 7825933 is a hydroblock connection for the domestic hot water (WW) circuit of a Vitodens WB1A boiler. It forms the connection point between the hydroblock assembly and the DHW side of the appliance's hydraulic circuit. It is supplied as a single component for use on Vitodens WB1A combi and system models.
Signs this part needs replacing
- Water weeping or damp staining around the hydroblock connection
- Dripping from the DHW connection joint while the boiler is running
- Scale or corrosion visible on the connection body or its sealing faces
- Falling domestic hot water pressure or inconsistent DHW temperature
- Repeated system pressure loss that requires regular topping up
Before you order
- Check the boiler data badge and confirm the model against the fitment list above.
- Confirm the appliance is a Vitodens WB1A — the part is not listed for other ranges.
- Inspect the hydroblock to identify which connection is required before ordering.
- Have the manufacturer part number 7825933 to hand when checking the existing component.
Compliance
| Alternative numbers | 2320098 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS WB1A COMBI 24KW | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI 24KW SERIAL No. 7179917 | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI 30KW | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI 30KW SERIAL No. 7179916 | 47-819-05 | 47-819-05 | — | — |
| VIESSMANN VITODENS WB1A COMBI C24KW (7246794) | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI C24KW (7247428) | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI C24KW (7248590) | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI C24KW SERIAL No. 7246794 | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI C24KW SERIAL No. 7247428 | — | — | — | |
| VIESSMANN VITODENS WB1A COMBI C24KW SERIAL No. 7248590 | — | — | — |
Showing 10 of 18 compatible appliances.
Documents & drawings
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