Hydrolevel 48-3150 Hydrostat 3150

The Hydrolevel 3150 HydroStat is a 120V universal dual-function control combining temperature limit control (TLC) and low water cut-off (LWCO) functionality, designed as a direct replacement for common cold-start and triple-action aquastats including Honeywell L7124A, L7148A, L7224C, L7248A, L8124A, L8148A series models. Specifically engineered for cold-start oil boilers and systems with tankless DHW coils, the unit features thermal pre-purge technology that conserves fuel by circulating latent boiler heat before burner ignition. The control offers selectable automatic or manual reset modes, four external diagnostic LEDs for system status monitoring, and dial-type internal settings with hinged access cover for easy adjustment. Technical specifications include SPDT relay operation with 7.4 FLA/44.4 LRA burner contacts, 5.8 FLA/34.8 LRA circulator contacts, temperature range of 110°F-220°F high limit with 110°F-200°F low limit, and 3/4" or 1/2" NPT Electro-Well connection for complete LWCO functionality in a NEMA 1 enclosure.