669464R Nordyne Reversing Valve
669464R Nordyne Reversing Valve
Description
The 669464R is an official OEM 4-way reversing valve for Nordyne heat pump systems, engineered to switch refrigerant flow between the evaporator and condenser coils for heating and cooling modes. It features stainless-steel internal components housed in a durable aluminum body, and carries a 4-year limited warranty for reliable, long-term performance. Total kit weight is approximately 0.94 lb (0.43 kg).
Key Specifications
| Specification | Details |
|---|---|
| Part Number | 669464R |
| Valve Type | 4-way reversing valve |
| Body Material | Aluminum housing |
| Internal Components | Stainless-steel construction |
| Warranty | 4-year limited warranty |
| Weight | 0.94 lb (0.43 kg) |
Compatibility
| Series / Model Family | Typical Models |
|---|---|
| F8 Heat Pumps | 5F8, 6F8, 8F8, 9F8 |
| C20 Packaged Units | C20AC, C20BC, C20BH |
| D22 Packaged Units | D22AC, D22BC, D22BH |
Replaces original part 669464 in all above applications.
Installation & Service Tips
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Always de-energize the 24 VAC control circuit before servicing.
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Remove old valve and inspect O-rings; replace with OEM gaskets.
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Orient the valve per the arrow marking on the body to match refrigerant flow direction.
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Torque inlet and outlet fittings to 10–15 ft·lb to ensure leak-free connections.
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Evacuate the system to ≤ 500 microns and perform a leak check at 150 % of operating pressure.
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Energize the coil with 24 VAC and observe valve shift under pressure prior to full startup.
Cross-Reference & Resources
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OEM Replacement Mapping: 669464 → 669464R
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Solenoid-Valve Control Wiring Diagram for Nordyne SYSTX and Q-Series controls
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Heat-Pump Defrost Cycle Schematic Highlighting Valve Shift Timing
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Printable Service Card: Valve Port Identification & Torque Specifications