✓ Gas fired water boiler with cast aluminum heat exchanger
✓ Venturi mixing body mixes air and gas providing higher efficiency
✓ Designed to operate in low temperature condensing applications
✓ Outdoor reset and domestic hot water priority standard
✓ Negative regulated gas valve precisely delivers gas to the boiler
✓ U-Control gives you the power for easy set-up and maintenance
✓ Modulates with 5 to 1 turn-down ratio
✓ Variable speed motor matches combustion output to heating needs
✓ High grade stainless steel burner features quiet operation, high efficiency, and cleaner combustion for low NOx applications