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Pulse arcade — neon hairlines and corner brackets frame the playfield brief.
Verified Specifications: Red color-coded for quick identification as a 300-degree fixed limit control
The 40003916-024 is technically identical to the 40003916-024/U model
This OEM hi limit switch acts as a fail-safe by monitoring internal temperatures and interrupting the power supply to the burner or fan if the system exceeds its safe operating ceiling
Using a non-identical part will lead to inaccurate temperature reporting and potential control board malfunctions
It matches the physical footprint and electrical specs for a drop-in replacement
Lochinvar & A.O. Smith 100318771 Inducer Assembly 320788-703 Verified Specifications: Red color-coded forThe Lochinvar 100318771 Inducer Assembly is a critical OEM replacement fan assembly engineered to maintain precise combustion airflow in high efficiency Lochinvar NKC and NKB199 fire tube boilers. As a veteran technician knows, the inducer is the first component to activate in the ignition sequence, purging the heat exchanger of residual gases and creating the negative pressure required to close the boiler pressure switch. This 100318771 blower motor