Optimized Conductivity: Designed to carry the full secondary voltage pulse required for consistent arc generation in the combustion chamber

Can this electrode be used in other Vitodens models

or for new installations requiring specific actuator pairings

it features high-quality silver-cadmium oxide contacts to minimize pitting and ensure long-term conductivity under heavy inductive loads

which prevents electrode fouling and tank corrosion

Markel 29157004 Limit R-410A Optimized Conductivity: Designed to carryThe Markel 29157004 Limit is a mission critical high limit safety switch designed for precision thermal protection in HVACR systems. Specifically engineered for duct heaters and electric heat assemblies, this manual reset limit prevents catastrophic equipment failure by breaking the electrical circuit when internal plenum temperatures exceed safe thresholds. Identified by the technical designation MFHE LIMIT RD103 002 104C, this component triggers at