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Nordyne 669852R Thermal Expansion Valve (TXV) R410A 048K

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Special Price $169.20 Regular Price $194.58
In stock
SKU
669852R
The Nordyne 669852R Thermal Expansion Valve (TXV) is a fundamental element for R410A HVAC systems. The cooling power of the air conditioning system is optimized by controlling refrigerant flow into the evaporator. In order to measure the evaporator output temperature, a thermocouple is installed in the TXV. Based on this, it adjusts refrigerant flow rate that guarantees constant superheat, thus preventing system freeze-up and ineffective cooling. It is widely used in household and commercial air conditioners and heat pumps. Its accurate control on refrigerant flow leads to improved energy efficiency as well as comfort and durability of systems.
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HVAC Controls & Electrical, Valves
Manufacturer:
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Specifications

  • Type: Thermal Expansion Valve
  • Refrigerant: R410A
Manufacturer Name: Nordyne
Product Number: 669852R
OEM Part Number: 669852R
Product Description: Txv R410a 048K
Weight:0.8lbs/362.87g

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Product Questions (2)
Customer Questions
What maintenance is required for the Nordyne 669852R Thermal Expansion Valve?

Check the valve regularly for leaks, corrosion, and proper refrigerant flow. Clean surrounding components to prevent blockage, and ensure connections are tight. Monitor system pressures to confirm correct operation, and handle refrigerants safely during inspections.

What are common issues with the Nordyne 669852R Thermal Expansion Valve?

  • Improper refrigerant flow causing cooling inefficiency.
  • Valve sticking or failing to modulate correctly.
  • Leaks at connections or valve body.
  • Frost buildup on the valve or evaporator.
  • Inaccurate superheat adjustment.

Installation Steps

Step 1: Turn off power and refrigerant flow to the system for safety.

Step 2: Recover refrigerant from the line before removal.

Step 3: Remove the old TXV carefully, noting orientation and fittings.

Step 4: Install the new valve, ensuring proper alignment and secure connections.

Step 5: Evacuate, recharge the system with R410A refrigerant, and restore power.

Step 6: Check for leaks and test system operation to confirm proper performance.