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measure resistance across the coil
meaning it senses evaporator pressure at the valve outlet
Built with a durable silicone diaphragm and a rugged zinc-plated steel housing
Is this a manual or automatic reset device
Common Questions: Can I use a 440V capacitor if my original was 370V
Lennox 88K90 Pressure Switch Els PW 17895 measure resistance across the coilThe Lennox 88K90 Pressure Switch is a high precision, OEM furnace safety component factory calibrated for induction monitoring in residential and light commercial heating systems. This 0. 47" WC pressure switch utilizes a single pole single throw (SPST), normally open contact configuration, ensuring the combustion process only initiates when proper draft is established. Designed for universal compatibility with older systems, the 88K90 replaces part
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