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System Longevity: Maintains proper airflow to prevent short-cycling and premature heat exchanger fatigue
the manufacturer recommends a vertical mounting plane with the 5/16-24 contact terminals and 10-32 coil terminals oriented upward
and International Comfort Products furnace and air handler applications
and evaporator coil sensing
Nordyne 669821 TXV Valve 318518-761 System Longevity: Maintains proper airflowThe Nordyne 669821 TXV Valve is an OEM 4 ton R410A expansion valve engineered for precise refrigerant metering in high capacity split systems and packaged units. As a direct replacement for Nortek 669821R, this thermostatic expansion valve regulates flow based on evaporator load, ensuring optimal superheat levels and preventing liquid slugging in the compressor. For technicians servicing 48,000 BTU cooling systems, this Nordyne HVAC part provides the
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