Designed for 24Vac applications

as well as several non-spring return models for various control signals

protecting technicians from the blower assembly and electrical hazards

making it a staple for apartment construction and commercial retrofits

Honeywell L4006A1967 Controller L99H008 Designed for 24Vac applicationsThe Honeywell L4006A1967 is a trade grade immersion type Aquastat controller engineered for precise temperature regulation in hydronic systems, boilers, and liquid storage tanks. Featuring SPST contacts that break on temperature rise, this unit is commonly deployed as a high limit or low limit control. It utilizes a 3 8" x 2 7 8" copper sensing bulb paired with a 1 1 2" capillary for responsive thermal detection. The device supports an operating range