Laars Heating Systems E2103900 Manual Reset Aquastat Control 40-180°F with 220" Capillary

The Laars Heating Systems E2103900 is a manual reset aquastat high limit control designed to protect boiler and hydronic heating systems from dangerous overheating conditions. This SPST (Single Pole Single Throw) temperature control provides reliable safety monitoring for water temperatures in commercial and residential heating applications.

Key Features:

• Temperature range: 40°F to 180°F for versatile heating system applications
• 220-inch capillary tube length allows flexible remote mounting and sensing
• Manual reset functionality ensures operator awareness before system restart after high limit trip
• SPST switching breaks circuit and locks out when temperature reaches setpoint
• Remote temperature sensing element detects and responds rapidly to temperature changes
• Requires temperature to drop approximately 20°F below setpoint before manual reset is possible

This aquastat control acts as a critical safety device by setting a high limit on water temperature in your heating system. The manual reset feature provides trip-free protection, preventing automatic restart after a high temperature event until the system has been inspected and manually reset. Ideal for use with Laars boilers and compatible hydronic heating equipment.