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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Key Benefits for the Contractor: Dual Automatic Operators: Meets strict safety codes by providing two layers of gas shutoff via the solenoid-operated first valve and diaphragm-operated second valve
For contractors servicing older PMAC units
Operating as a close on rise thermal switch
critical for preventing premature cracking and glazing in high-temperature rooftop packages or enclosed air handler cabinets
The single-try ignition sequence simplifies local code compliance in specific commercial and residential configurations
Viessmann 7835169 Ionization Electr. R-22 Key Benefits for the Contractor:The Viessmann 7835169 Ionization Electrode is a critical flame sensing component engineered specifically for high capacity Vitodens 200 W B2HA condensing gas boilers. Designed to handle the rigorous thermal demands of the B2HA 399 and 530 models, this electrode provides the millivolt signal necessary for the burner control unit to verify flame presence safely and consistently. This kit includes the required electrode gasket to ensure a gas tight seal