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a drop of 15 psi or a leaving pressure below 50 psig typically indicates the element is saturated and requires immediate replacement
When you are upgrading an older Nordyne furnace for air conditioning or heat pump compatibility
proceed with the next larger orifice size to ensure proper flow
Includes specialized tamper-proof screws that resist standard hex or Phillips drivers
Lennox 10M79 Limit Switch 322838-753 a drop of 15 psiThe Lennox 10M79 Limit Switch is a critical safety component engineered for precision thermal monitoring in HVAC systems and residential furnaces. This OEM Lennox part, also identified by manufacturer number 10M7901, features an L140 40F configuration. It is calibrated to open the electrical circuit when internal temperatures reach a 140F limit, effectively preventing heat exchanger damage and ensuring safe appliance operation. The switch
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