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Common HVAC Contractor Questions:
Failures are commonly caused by moisture buildup in the housing leading to corrosion
always verify the specific piping requirements and pressure ratings for your application before installation
For technicians managing turbulent steam environments
Vibration Protection: The brass armor sleeve shields the copper core from mechanical wear and fatigue caused by high-frequency system harmonics
Lochinvar & A.O. Smith 100109934 Switch 320720-756 Common HVAC Contractor Questions:The Lochinvar & A. O. Smith 100109934 Switch is a critical safety component engineered for high efficiency condensing boilers and commercial water heaters. Functioning as a blocked outlet switch, this normally closed (NC) pressure sensor is calibrated to 2. 6" WC to monitor exhaust backpressure. If the venting system becomes obstructed by debris, ice, or mechanical failure, the 100109934 triggers an immediate system lockout to prevent the hazardous