F3ST (Short blast tube) 6 1/2″ tube – 0.50 to 0.95 GPH
F3LT (Long blast tube) 10 1/2″ tube – 0.50 to 0.95 GPH
Quality engineered to our proven world-class standard, Riello 40-Series oil-fired burners are built for maximum reliability. Riello 40-Series high-efficiency oil burners not only deliver low energy consumption and quiet, worry free performance, they’re the most reliable combustion technology on the market. Riello 40-Series oil burners offer a host of advanced features – such as durable, lightweight, compact construction; an integrated electronic control box with interrupted ignition; and an automatic air shutter that eliminates heat loss and enhances efficiency. Easy to install and service, and backed by coast-to-coast support, Riello 40-Series oil-fired burners are available in five models with firing rates from 0.5 to 6.4 GPH to handle a complete range of residential and light commercial/industrial applications.