Utica-Dunkirk 550002858 Aquastat Refrigerant While designed for JCI V-series

While designed for JCI V-series actuators

Always match the temperature range and reset type to the original technical specifications in the heater manual

With an adjustable differential of 6 to 24 degrees

Technicians typically observe weak or intermittent sparking across the electrode tips

a higher sensitivity module (such as the 26ME with 100K Ohm) may be required to detect the lower conductivity

Utica-Dunkirk 550002858 Aquastat Refrigerant While designed for JCI V-seriesThe Utica Dunkirk 550002858 Aquastat is a heavy duty SPST immersion aquastat designed for accurate limit or regulation control of water temperatures in hydronic heating systems. Specifically engineered for Utica and Dunkirk boiler systems, this OEM component operates across a 110F to 200F range to maintain optimal thermal stability. As a 240007710 retrofit kit equivalent, it is the primary replacement for obsolete 146 62 025 and L7148F1042 controls.