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and Payne residential heating systems
this thermal expansion valve is internally compensated and calibrated specifically for the pressure-temperature relationship of R410A
ensuring that your BAS logic can detect belt breaks
drawing the standard 24VAC control voltage from the integrated furnace board
rating plate labels
Lennox 33J88 Pressure Switch 30067439-890 and Payne residential heating systemsThe Lennox 33J88 Pressure Switch is a critical safety component designed for precise draft monitoring in high efficiency gas furnaces. Rated for a set point of 4. 50" WC, this SPST (Single Pole Single Throw) switch provides reliable circuit closure to the control board once the inducer motor establishes the required negative pressure. This part is a direct factory replacement for Lennox model 33J8801, ensuring a drop in fit with existing mounting
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