Resideo L4008E1313 Remote Bulb Aquastat with Manual Reset 100-200°F

The Resideo by Honeywell L4008E1313 is a remote bulb aquastat control designed for reliable high-limit temperature protection in hydronic heating systems. This safety control features a manual reset function and breaks on temperature rise, providing critical protection against overheating conditions.

Key Features:

• Temperature range: 100-200°F adjustable setpoint
• 66-inch remote sensing capillary tube for flexible installation
• Manual reset operation ensures operator awareness after trip events
• Breaks on rise (normally closed) contact configuration
• SPST snap-acting switch provides reliable, definite circuit interruption
• Hermetically sealed bulb and bellows system for long-term reliability
• 1/4-inch NPT bulb well connection for secure mounting

This aquastat is commonly used as a high-limit safety control on boilers, water heaters, and hydronic heating systems. The remote bulb design allows the sensing element to be positioned directly in the water or immersion well while the control body is mounted in an accessible location. The manual reset feature ensures that system faults are addressed before equipment can restart, providing an additional layer of safety for critical applications.