Resideo L4006A1827/B Aquastat R-134A it should be inspected and

it should be inspected and replaced separately to maintain the correct flue gas velocity

Durable Construction: Heavy-duty iron casting ensures long-term structural integrity in high-torque industrial HVAC applications

this thermal expansion valve is supplied with the sensing bulb required for proper suction line temperature feedback

The loose parts kit contains the specific hardware components listed in the service manual for the identified unit series

Resideo L4006A1827/B Aquastat R-134A it should be inspected andThe Resideo L4006A1827 B Aquastat is a heavy duty, immersion type boiler temperature controller engineered for precise high or low limit regulation in hydronic heating systems and storage tanks. This SPST aquastat features a liquid filled sensing element that triggers a totally enclosed micro snap acting switch upon temperature rise to the set point, ensuring immediate circuit interruption for equipment protection. Designed for versatile field