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this model is a standard for professional HVACR technicians who require exact compatibility with Raypak atmospheric and digital heating units
In high-demand HVACR environments
Handle the unit only by the round ceramic base
Standard 24V AC control voltage integrates directly with most existing ignition modules and circuit boards
Hydrolevel 550SVR Low Water Cut-Off Refrigerant this model is a standardThe Hydrolevel 550SVR Low Water Cut Off is a professional grade safety control designed to prevent dry firing in 120Vac gas or oil fired boilers. This Safgard 550SVR LWCO features a 30 second delay to filter out nuisance shutdowns from temporary water surges, ensuring the burner circuit only locks out during sustained low water events. As a secondary control for steam boilers or a primary limit for hot water systems, it meets ASME CSD 1 requirements
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