Resideo by Honeywell L4008E1156 High Limit Aquastat Controller with Manual Reset 130-270°F

The Resideo by Honeywell L4008E1156 is a high limit aquastat controller designed for limiting or regulating the temperature of liquids in boilers and storage tanks. This manual reset controller features a remote bulb temperature sensing element with a 66-inch capillary tube that provides rapid response to temperature changes.

Key Features:

• Operating temperature range: 130°F to 270°F (54°C to 132°C) with factory-set stop at 250°F
• Manual reset high limit protection for critical safety applications
• SPST (single pole, single throw) switching action with contacts that break on temperature rise
• Remote copper sensing bulb (3/8 inch x 2-7/8 inch) with heat-conductive compound for accurate temperature detection
• 66-inch (5.5-foot) capillary tube length for flexible installation
• Totally enclosed Micro Switch snap-acting switch for reliable operation
• Visible control point scale with external adjustment screw for easy setting
• Horizontal or vertical mounting options for installation flexibility
• Compact case dimensions: 5-5/8 inches high x 2 inches wide x 2-1/8 inches deep

Electrical Ratings:

• 120 VAC: 8A full load, 48A locked rotor
• 240 VAC: 5.1A full load, 30.6A locked rotor
• Millivolt: 0.25A at 0.25 to 12 VDC

Approvals: UL Component Recognized (File No. MP466) and CSA Certified (File No. LR95329-1) for safe installation in commercial and residential heating systems.

This controller can also be used to sense duct or outside air temperature in HVAC applications. The manual reset feature ensures that high temperature conditions must be addressed before the system can be restarted, providing enhanced safety protection.