Viessmann Vitodens 100W Expansion Vessel Hose 7822350

Description

The Viessmann 7822350 expansion vessel hose is a brand-new genuine replacement component for selected Viessmann Vitodens 100, Vitodens 100W, Vitodens 333-F and Vitodens 343-F boilers. It is supplied with a 12-month warranty and should only be ordered after confirming the boiler model and manufacturer part number.

The hose provides the connection between the boiler’s hydraulic system and the expansion vessel, allowing system water and pressure changes to be managed correctly. Installation should be completed by a suitably qualified Gas Safe registered engineer.

Product Details

Brand: Viessmann
Part type: Expansion vessel hose
MPN: 7822350
Condition: New
Warranty: 12 months

Boiler Compatibility

Viessmann Vitodens 100 WB1A

Vitodens 100 WB1A 24 V1 Combi NG
Vitodens 100 WB1A 24 V2 Combi NG
Vitodens 100 WB1A 30 V2 Combi NG
Vitodens 100 WB1A 24 V1 System NG
Vitodens 100 WB1A 24 V2 System NG
Vitodens 100 WB1A 24 Combi NG
Vitodens 100 WB1A 24 System NG
Vitodens 100 WB1A 30 Combi NG
Vitodens 100 WB1A 30 V1 Combi NG
Viessmann Vitodens 100W WB1A
Vitodens 100W WB1A 30 Combi NG

Viessmann Vitodens 333-F

Vitodens 333-F WS3A 26 Combi NG

Viessmann Vitodens 343-F

Vitodens 343-F WS4A 13 NG

Delivery & Collection

Collection is available from our Newcastle showroom at Unit 5, Penn Street, Newcastle upon Tyne, NE4 7BG, usually on the same day, subject to stock availability. If the item is not in stock, collection is normally available the next working day. We also offer fast UK delivery through Royal Mail First Class or DPD Next Day, with most orders arriving within one to two working days. Boiler components should be installed by a suitably qualified Gas Safe registered engineer.

Warranty

This brand-new genuine Viessmann boiler expansion vessel hose is supplied with a 12-month warranty. Warranty claims may be subject to inspection and confirmation that the component was correctly selected and professionally installed.

Returns

We accept returns within 30 days of delivery. The product must be unused, unfitted and returned in its original unopened packaging with all seals intact. We cannot accept returns for components that have been fitted, used, damaged or returned in an unsuitable condition. Please check the boiler model, GC number, edition, serial-number range and part number carefully before ordering.

If you need any help, our team is happy to assist. Please contact us by phone or WhatsApp chat.

Frequently Asked Questions

Is this expansion vessel hose compatible with the Viessmann Vitodens 100W?

Yes. Viessmann part 7822350 is compatible with the confirmed Vitodens 100 and Vitodens 100W WB1A models listed above. Check the full boiler model and existing part number before ordering.

How can I confirm that Viessmann 7822350 is the correct replacement?

Compare the manufacturer part number on the existing hose or appliance parts information with 7822350. You should also confirm the complete boiler model, version and fuel type before purchase.

What does the expansion vessel hose do?

The hose connects the boiler’s hydraulic circuit to the expansion vessel. This allows water to move between the system and expansion vessel as the system pressure changes during heating and cooling.

What symptoms may be connected with a damaged expansion vessel hose?

Possible signs can include water leakage inside the boiler, visible deterioration around the hose connection or difficulty maintaining normal system pressure. These symptoms do not confirm that the hose is defective, so the boiler should be inspected by a qualified engineer.

Does this expansion vessel hose require professional installation?

Yes. Boiler hydraulic components should be inspected and installed by a suitably qualified Gas Safe registered engineer. The system may need to be isolated, drained, refilled and tested after installation.