This heavy-duty centrifugal blower is critical for maintaining consistent discharge air temperatures and proper combustion efficiency within gas-fired heating systems

While this is an IEC replacement part

providing flexibility for air proving switch integration

Technicians should verify that the unit is equipped with a crankcase heater and non-bleed TXV before installation

this specific model is optimized for ambient air measurements

Nordyne 669567R TXV Valve 321894-706 This heavy-duty centrifugal blower isThe Nordyne 669567R TXV Valve is a critical metering component designed for 3. 5 ton R 410A residential and light commercial HVAC systems. As a genuine TR6 thermal expansion valve, this OEM part is specifically engineered to replace aging or failing valves in Nordyne air conditioning and heat pump units. It provides high precision refrigerant regulation, ensuring the evaporator coil maintains the correct superheat across varying load conditions. For