or visible oil leakage from the bearings

the TP-264D is the standard specification for high-output 175 MBH HL2 and DX2 series heaters

The rugged construction utilizes 17-4 stainless steel wetted parts and Viton bleed screw seals to ensure chemical compatibility and long-term stability

technicians can restore bubble-tight shutoff and responsive actuation without the cost of a full valve body replacement

Complete Professional Kit: Includes the control board

Viessmann 7826516 Ignition Electr. 326070-701 or visible oil leakage fromWhen you're servicing a Viessmann Vitodens 200 or 222 F unit, reliable ignition is the baseline for high efficiency combustion. The Viessmann 7826516 Ignition Electrode is the OEM replacement designed specifically for the WB2B, B2HA, B2HB, B2TA, and B2TB burner assemblies. This kit includes the necessary high temperature ignition electrode gasket, ensuring a gas tight seal at the mounting flange after youve pulled the burner for a maintenance check.