and older 043-B regulator models

Using it with R410A will result in incorrect superheat control and potential system failure

Always ensure the system's Vac requirements do not exceed the capacitor's 200V limit to prevent dielectric failure

The non-lockup poppet design is critical for maintaining stable pressure to main burners and can handle massive loads up to 4

Utica-Dunkirk BD711180100 Sensor 320735-701 and older 043-B regulator modelsThe Utica Dunkirk BD711180100 is an OEM spec NTC temperature sensor specifically engineered for high accuracy thermal monitoring within heat exchanger (HTEX) assemblies. Designed with a Negative Temperature Coefficient, this thermistor ensures that resistance decreases precisely as the boiler temperature rises, providing the control board with real time feedback for modulating firing rates and preventing thermal overruns. This HVAC temperature sensor