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ensuring the correct RPM and horsepower (1/15 HP) is critical for maintaining the intended airflow across the heat exchanger
25 HP motor delivers consistent torque and reduced vibration compared to single-phase equivalents
ensuring a perfect airtight seal in 17
two distinct gas valve spring kits for stage regulation
Carrier 337662-704 Pressure Switch Assembly 321702-401 ensuring the correct RPM andThe Carrier 337662 704 Pressure Switch Assembly is a critical OEM replacement component designed for high efficiency condensing furnaces. This assembly features a triple switch configuration calibrated to monitor inducer motor performance and vent system integrity across multiple stages of operation. To ensure precise combustion safety, the unit is factory set with specific pressure trip points: 0. 65" WC for low stage, 0. 90" WC for medium stage, and