York 026-19654-709 Wheel Els PW 17895 a compromised observation port is

a compromised observation port is a safety hazard you can't ignore

As an essential part of the flame sensing circuit

Field-tested for long-term reliability

The bi-metal sensing element provides reliable continuity under normal conditions and opens the circuit instantly upon reaching the high-temperature threshold

York 026-19654-709 Wheel Els PW 17895 a compromised observation port isThe York 026 19654 709 Wheel is a high performance blower component designed for precise integration within York and Johnson Controls air handling assemblies. As a direct York blower wheel replacement, this unit is engineered with an 11 inch diameter and an 8 inch width, adhering to strict OEM tolerancing for optimal static pressure management. For contractors identifying parts via the S1 026 19654 709 reference, it is critical to note this is an HVAC