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this 1/4 SAE filter drier provides the necessary filtration to prevent internal corrosion and maintain low pressure drop across the liquid line
or error codes indicating a "No Flame Detected" condition
technicians must mount the unit with the diaphragm in a vertical plane to maintain the specified operating set point
The 2878400S Wire Harness provides the necessary leads for standard thermostat wiring and auxiliary accessory integration
Lennox 58H31 Pressure Switch Refrigerant this 1/4 SAE filter drierThe Lennox 58H31 Pressure Switch is a critical safety component designed for precise draft verification in residential and light commercial HVAC systems. This genuine OEM part features a factory calibrated 3. 00" WC (Water Column) set point and a Single Pole Single Throw (SPST) configuration, ensuring the inducer motor establishes proper static pressure before allowing the ignition sequence to proceed. As the verified direct replacement for the legacy
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