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rail-price-top · floating island · grid + stamp
Ships within 48 hours · Estimated delivery Sep 23 - Sep 28
This SPNO (Single Pole Normally Open) air pressure sensing switch is factory-calibrated to a
and auxiliary heat lockouts
The switch should show an open circuit
s selection chart
ensuring the inducer motor maintains proper static pressure before the ignition sequence initiates
Lennox 15M20 Pressure Switch Els PW 17895 This SPNO (Single Pole NormallyThe Lennox 15M20 Pressure Switch is a critical safety component designed for precise draft proving in residential and commercial furnaces and rooftop units. This OEM Lennox 15M20 switch is a single pole, single throw (SPST) normally open configuration that closes when it detects a pressure fall of . 10"wc. Built with a 1 4" barb connection for easy hose attachment, this air proving switch ensures the combustion air inducer is pulling sufficient vacuum
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