As a dual function fan delay timer

Operating at 460V single-phase with a 1/3 HP rating

no continuity indicates a failed open switch that requires immediate replacement

The NEMA 4X enclosure provides superior protection in harsh environments

Durable Cast Iron Build: Engineered for high-load applications with superior wear resistance compared to standard pulleys

Resideo TK30PV100NK Combo Trim Kit 319848-301 As a dual function fanThe Resideo TK30PV100NK Combo Trim Kit is a comprehensive, field ready solution engineered for professional boiler change outs and hydronic system upgrades. This 4. 4 gallon kit integrates critical components into a high performance assembly, featuring a hydronic expansion tank, a 1 inch NPT SuperVent air eliminator, and a NK300S boiler feed combination valve. Designed for closed loop heating systems, the ASME compliant diaphragm expansion tank