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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
Most compatible hot surface ignitors should read between 40 and 60 ohms
This compact component is a standard for contractors looking to improve system reliability and ensure backup pump availability during peak loads
Quick Field Replacement: Lightweight and rigid construction allows for rapid sliding exchanges during routine maintenance calls
allowing for high-density relay packing in custom control enclosures
Durable Construction: Features stainless steel bellows and a temperature-compensated time relay for accurate performance from -40°F to 140°F
Lochinvar & A.O. Smith 100288429 Switch 322838-753 Most compatible hot surface ignitorsThe Lochinvar & A. O. Smith 100288429 Switch is a critical safety component designed for precise air pressure sensing in high efficiency heating systems. This OEM replacement part is factory calibrated to a 3. 90" water column (WC) set point, serving as a primary air proving switch to ensure the blower motor is moving sufficient combustion air before the ignition sequence begins. Engineered for compatibility with specific Lochinvar boilers and A. O.