including modern Wi-Fi and smart models that require a common wire

it may have weakened over time and should be replaced to ensure system reliability

this Maxitrol amplifier replacement kit ensures your indirect-fired duct furnace maintains tight temperature margins and fuel efficiency

Using an incorrect voltage source or an AC supply without a proper controller will damage the internal electronics

the 240009669 revision C is designed to be backward compatible with earlier revisions of the same control series used in ECR International boilers

Hydrolevel 550SVR Low Water Cut-Off THPU32HP7Y including modern Wi-Fi and smartThe 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