▪ Gas-fired wall mounted unit is from 4.7 to 35 kW
▪ SEDBUK 2009 seasonal efficiency 89.5%
▪ Modulation range up to 1:6
▪ Modulating cylinder burner
▪ User friendly control via backlit touchscreen
▪ Constant temperature control and weather compensated operation (for the weather compensated operation the outside temperature sensor is required)
▪ Multiple boilers can be installed on one chimney system
▪ Energy efficiency class: A
▪ 5 year comprehensive warranty as standard
▪ Viessmann Trained Installers can now offer their customers an extended warranty option up to 10 years

Boilers Viessmann