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Per technical guidelines
which effectively eliminates hunting and ensures stable zone comfort even during static pressure fluctuations
Its balanced port design compensates for varying head pressures
For professionals troubleshooting low suction pressure or erratic superheat readings
Lochinvar & A.O. Smith 100288430 Switch 321702-401 Per technical guidelinesThe Lochinvar & A. O. Smith 100288430 Low Air Pressure Switch is a critical safety component designed for high efficiency condensing boilers and water heaters. As a veteran technician knows, this normally open switch is calibrated to a precise 0. 75" water column (W. C.) set point. It serves as the primary "proof of airflow" for the inducer motor, ensuring that the combustion blower is creating sufficient negative pressure to safely evacuate flue
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