Nordyne 632547R Pressure Switch 321894-709 this model is powered by

this model is powered by two AAA batteries

utilizing standard ODM x ODF connection types for secure brazing

minimizing hysteresis and ensuring long-term stability in demanding hydronic circuits

The Hydrotherm BM-8814 Ignition Module (OEM Part # 35-655927-001) is a critical component for restoring direct spark or intermittent pilot functionality in high-efficiency Hydrotherm boilers and furnaces

this HVAC duct sensor should be mounted vertically on a flat surface

Nordyne 632547R Pressure Switch 321894-709 this model is powered byThe Nordyne 632547R Pressure Switch is a critical OEM furnace safety control engineered to monitor proper inducer motor draft and venting conditions in high efficiency heating systems. This SPST (Single Pole, Single Throw) switch is factory calibrated to a precise 0. 90" WC (Water Column) set point, ensuring the combustion process only initiates when safe airflow thresholds are met. As a genuine Nordyne replacement part, it eliminates the calibration