Resideo - Honeywell Home L4006B1163 Aquastat Controller

The Aquastat Controller from Resideo—Honeywell Home L4006B1163 delivers precise boiler temperature control for heating systems. Built for boilers and storage tanks, this reliable Aquastat Controller combines a copper bulb sensor, long capillary and robust immersion well to regulate temperatures smoothly and safely.

• Sensor and sensing bulb: Type 3/8" diameter x 2-7/8" length copper bulb with a 3" capillary; direct horizontal/vertical immersion in the well.
• Operating range: 100–240 °F temperature range with a maximum rating of 150 °F.
• Electrical and contact: SPST contact, break on temperature rise; full-load ratings: 8 A at 120 V AC or 5.1 A at 240 V AC; locked rotor: 48 A at 120 V AC / 30.6 A at 240 V AC; millivolt: 0.25 A at 0.25–12 V DC.
• Connections: 3/4" conduit with screw-terminal.
• Applications: ideal for boiler and storage-tank systems.
• Mechanical and pressure specs: differential 5–30 °F adjustable; sensing liquids: toluene or silicone oil; capillary bulb 200 psi, immersion well 255 psi.
• Certifications: UL, CSA, AGA approved.
• Dimensions: 2" W × 2-1/8" D × 5-5/8" H.

Designed for reliable operation and safe integration into heating systems, this Aquastat Controller helps optimize performance while protecting equipment and ensuring consistent temperature control.