Advanced System Diagnostics: Integrated logic helps technicians quickly identify and resolve system lockouts and safety switch trips

maintaining safe and efficient burner operation during the ignition sequence

making it compatible with a wide range of modulating hot/chilled water valves and actuators

The VAL01483 is the current manufacturing part number

The mode is determined by the internal jumper settings (J2)

Resideo L4006A1009 Aquastat Controller 321894-709 Advanced System Diagnostics: Integrated logicThe Resideo L4006A1009 Aquastat Controller is a professional grade immersion temperature controller designed for precise regulation in hydronic heating systems, storage tanks, and boilers. This high or low limit aquastat utilizes a 3 8" x 2 7 8" copper sensing bulb to monitor liquid temperatures between 100F and 240F. Featuring internal SPST contacts that break on temperature rise, this unit is engineered for reliable safety shut off or cycling