As the direct 802 replacement

Simply locate the white circuit breaker reset button on the top of the unit

it will re-engage once the temperature drops below its 180°F reset point

Can this be used on steam boilers

Johnson Controls VG7241PT+72CHGA Valve Assembly Refrigerant As the direct 802 replacementThe Johnson Controls VG7241PT+72CHGA is a high performance 1 1 4" bronze globe valve assembly designed for precise modulation in commercial HVAC systems. This 2 way normally open valve features an 18. 5 Cv flow coefficient and an equal percentage flow characteristic, making it ideal for regulating hot water, chilled water, or saturated steam. The rugged cast bronze body is paired with brass trim and an ANSI Class IV leakage rating, ensuring tight shut