Armstrong Furnace R40663-002 Ignitor/Sensor 320735-701 Precision Timing: High-resolution adjustment allows

Precision Timing: High-resolution adjustment allows for on-delay intervals between 0

The sensing bulb should be mounted on a horizontal run of the suction line at the 10 o'clock or 2 o'clock position

For modern UDAP or UZAA series

Enhanced Structural Integrity: Provides superior support for the pump shaft

this valve is specifically rated for low-pressure applications up to 0

Armstrong Furnace R40663-002 Ignitor/Sensor 320735-701 Precision Timing: High-resolution adjustment allowsThe Armstrong Furnace R40663 002 Ignitor Sensor is a critical OEM replacement part designed for precision ignition and flame sensing in high efficiency gas furnaces. This silicon carbide ignitor, often cross referenced as the Q3300 series, is engineered to withstand the rigorous thermal cycling common in modern HVAC furnace repair. For technicians, this hot surface ignitor provides a reliable solution for residential heating systems, ensuring