Hydrolevel 550SVR Low Water Cut-Off 321142-301 What is the default fail-safe

What is the default fail-safe position for this model

Can I use S-Type oil in a system currently running S15 or S30 oil

ensuring seamless mechanical and electrical compatibility without requiring modifications to the valve body

The EPDM material is ideal for demanding environments

tamper-proof solid-core current sensor is required

Hydrolevel 550SVR Low Water Cut-Off 321142-301 What is the default fail-safeThe 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