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Viessmann Condensate Pipe 7834986

Viessmann

Viessmann Condensate Pipe 7834986

Viessmann condensate pipe for Vitodens 100-W WB1B and WB1BC boilers, part number 7834986.

At a glance

  • Appliance family: Vitodens 100-W condensing boilers
  • Also known as 2321518
Manufacturer part no.
7834986
Showing prices

£45.49

£37.91 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Viessmann condensate pipe (part number 7834986) is a formed condensate hose used on Vitodens 100-W condensing boilers in the WB1B and WB1BC families. It carries condensate away from the boiler's condensate collection point towards the drainage route. The part is manufactured by Viessmann for its own Vitodens 100-W appliance range.

Signs this part needs replacing

  • Condensate leaking or dripping from the pipe or its connections beneath the boiler
  • Water pooling inside the boiler casing or at the base of the appliance
  • Visible cracking, splitting or hardening of the hose material
  • Gurgling, slow drainage or condensate backing up in the boiler
  • Boiler locking out where condensate cannot drain away freely

Before you order

  • Confirm the appliance model and serial number against the fit list above
  • Inspect the existing pipe routing and connections before removal to note how it is fitted
  • Check the rest of the condensate drainage route for blockages or damage at the same time
  • Verify that the part number on the existing component matches 7834986

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.