China Gas Boiler Series: Smart Series Feature: 1. Aesthetics design, energy saving, high efficiency, Environment-friendly. Exported to Russia, Ukraine, Armenia etc adopted with European technology, high quality components with CE certificates, high efficiency combustion 2. Supply both heating and sanitary hot water 3. Easy operation, digital LED screens of European style, 4. Malfunction display code 5. Preset 5 kinds of programmer timer 6. Various capacity available: Input capacity: 18KW/ 20KW / 23 KW/ 28KW 7. Can be connected with room thermostat or remote controller which provides more funtion options. 8. Structure available: Plate Heat Exchanger. Optional: Forced Exhaust.