Resideo - Honeywell Home L4008E1156 Remote Bulb Aquastat Controller

Remote Bulb Aquastat Controller by Resideo – Honeywell Home L4008E1156 delivers precise boiler and storage-tank temperature control. This unit features a 3/8 inch copper sensing bulb, a 66 inch capillary, and supports horizontal or vertical immersion for flexible installation.

With a manual reset high-limit and a broad control range, it operates 130 to 270°F, while carrying a maximum rating of 150°F to safeguard equipment. The rugged SPST contact is configured to break on temperature rise and supports solid electrical performance across common heating applications.

• Sensing bulb and immersion: 3/8 in diameter copper bulb, 66 in capillary, horizontal or vertical immersion.
• Temperature control: 130–270°F range with manual reset; 150°F maximum rating for safety.
• Electrical ratings: 8 A at 120V AC / 5.1 A at 240V AC (full load); 48 A at 120V AC / 30.6 A at 240V AC (locked rotor); millivolt 0.25 A.
• Connections: 3/4 in conduit, screw terminal.
• Applications and approvals: Ideal for boilers and storage tanks; UL and CSA approved.
• Physical specs and fluids: 2" W x 2-1/8" D x 5-5/8" H; sensing bulb fills with toluene or silicone oil; capillary and immersion well pressures 200–255 psi.

Enhance system safety and reliability with this high-quality remote bulb aquastat controller designed for durable performance in demanding heating environments.