Honeywell-L4080D1051-Aquastat

Honeywell L4080D1051 Aquastat — high-temperature limit thermostat (high limit) for reliable protection of boilers from overheating. Ensure maximum safety of your heating system with the Honeywell L4080D1051 Aquastat. This is an immersion high-temperature controller (High Limit Aquastat), specially designed for hydraulic heating systems. It automatically shuts off the boiler burner when the set maximum water temperature is reached, preventing overheating of the heat exchanger, boiler, and the entire system. Honeywell L4080D1051 is a proven professional solution from the world leader in heating automation. Ideal for installation in gas, solid fuel, electric, and combination boilers. Key advantages: Overheat protection — opens the circuit when the set temperature is exceeded, ensuring equipment safety. Adjustable setpoint — convenient adjustment to the requirements of your heating system. Immersion mounting — compatible with immersion wells, provides fast and accurate response to water temperature changes. High reliability — liquid-filled sensing element, robust design designed for long-term operation. Universal application — suitable for boilers, indirect water heaters, storage tanks, and hydronic systems. Main specifications: Type: High Limit Aquastat; Adjustment range: 100–200 °F (approximately 38–93 °C); Differential: fixed or adjustable (depending on configuration, often ~8 °F / 4.4 °C); Switching: SPST (opens contact on temperature rise); Mounting: immersion, through a well; Electrical ratings: designed for line voltage and low voltage systems; Maximum temperature: up to 265 °F (129 °C) depending on setting.