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Always cross-reference the Lennox 51W90 specific pressure rating with your technical service manual
making it an essential component for monitoring coil discharge or preventing overheat conditions in industrial duct heaters and boilers
Installing a switch with a higher limit can lead to heat exchanger failure or a fire hazard
This is an OEM York replacement part
Carrier HK06NB025 Pressure Switch 340155-7026 Always cross-reference the Lennox 51W90Carrier HK06NB025 Pressure Switch
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