Honeywell L4081B1120 Triple Aquastat Controller – High Limit

Honeywell L4081B1120 Triple Aquastat Controller – High Limit / Low Limit / Circulator Control | Tested Condition: Used – Clean & Fully Functional (Tested) Availability: Ready for pickup / fast response Key Specifications: Brand: Honeywell (Resideo) Model: L4081B1120 Type: Triple Aquastat Controller Functions: High Limit Control Low Limit Control Circulator Pump Control Mounting: Horizontal Immersion Well Mount Connection: 3/4"-14 NPT Standard Immersion Well Switch Type: Two Independent SPST Snap Switches Temperature Ranges High Limit Range: 130°F – 240°F Low Limit / Circulator Range: 110°F – 220°F High Limit Differential: Fixed 10°F Low Limit Differential: Adjustable 10°F – 25°F Electrical Ratings 120 VAC Full Load: 8.0 A Locked Rotor: 48.0 A 240 VAC Full Load: 5.1 A Locked Rotor: 30.6 A Millivolt Rating 0.25 A @ 0.25 – 12 VDC Construction Liquid-Filled Copper Bulb Sensor Mechanical Temperature Sensing Heavy-Duty Boiler Control Design Reliable Snap-Acting Switch Mechanism Functional Overview: High Limit Control Protects the boiler from overheating by shutting off the burner when the water temperature reaches the high-limit setting. Low Limit Control Maintains minimum boiler water temperature during standby operation. Helps ensure domestic hot water availability on tankless coil systems. Circulator Control: Prevents circulator operation until boiler water reaches the selected minimum temperature. Improves heating system efficiency and comfort. Compatibility: Gas-Fired Boilers Oil-Fired Boilers Hydronic Heating Systems Tankless Coil Boiler Applications Residential & Light Commercial Heating Systems ⚠️ Verify immersion well compatibility and electrical ratings before purchase. Why Buy This One? ✔ Genuine Honeywell Aquastat Control ✔ Triple-function boiler controller ✔ Reliable mechanical temperature sensing ✔ Tested & ready for installation ✔ Hard-to-find replacement model Pickup: Toronto / GTA