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Common Questions: Can I touch the ignitor surface during install
you must place the provided 500 Ohm resistor across the control signal input (gray) and common (black) wires
manifold pressure) and can be converted for liquid propane (LP) applications with the appropriate conversion kit
The 903903 assembly focus is the resistive element and frame
Installation Ready: Provided with necessary lead wires and terminal connectors for immediate field replacement
Lennox 80W57 Pressure Switch 319848-301 Common Questions: Can I touchThe Lennox 80W57 Pressure Switch is a critical safety component designed for single stage gas furnaces. This genuine OEM Lennox furnace pressure switch is calibrated to actuate at . 65" WC (water column), ensuring that the combustion air inducer motor is generating sufficient negative pressure before the ignition sequence begins. Engineered with a single pole single throw (SPST) configuration and Normally Open (N. O.) contacts, this switch protects
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