System Reliability: Restores proper drainage flow to prevent pressure switch faults and potential system lockouts

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

Frequent tripping often indicates restricted water flow

a specific LP conversion kit must be installed by a qualified technician to adjust the spring regulator and orifices

the capillary tube is a sealed system containing pressurized fluid

Viessmann 7826516 Ignition Electr. 326070-701 System Reliability: Restores proper drainageWhen 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.