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This Normally Closed (NC) switch is designed to interrupt the ignition circuit upon detecting excessive temperatures
Always verify the pressure vessel number on the valve nameplate before installation to ensure exact internal fitment
meaning it triggers the fan at 110°F and continues operation until the temperature drops 25°F below that set point
The aluminum body and NBR seals ensure superior compatibility with fuel gas
maintaining the integrity of the unit’s power distribution
Nordyne M0021808R Motor 30067439-890 This Normally Closed (NC) switchThe Nordyne M0021808R Motor is a high efficiency 3 4HP 208 230V 1PH ECM Motor, engineered to serve as the direct OEM replacement for the discontinued M0021808 blower motor. Utilizing X13 constant torque technology, this electronically commutated motor provides significant energy savings and quieter operation compared to legacy PSC alternatives. It features a broad 1050 RPM range and is typically pre programmed for specific Nordyne air handler and