Best value in its class with new industry-leading technology and the most standard features
Highest Efficiency up to 98% at full modulation and up to 95% A.F.U.E.
Lasting performance with industry-leading Viessmann made SA240 / S43932 stainless steel Inox-Radial heat exchanger constructed to CSA B51 and ASME Section IV
Low Emission Combustion with Viessmann made stainless steel MatrixPlus cylinder burner - Factory calibrated
Fast Installation and Reduced Maintenance with Lambda Pro, industry-first intelligent combustion management system: Adjusts automatically to gas type and quality - No fuel conversion kit required
Powerful and User-friendly Viessmann 7 in. color touchscreen control with on-board multi-function outdoor reset boiler and system control for multi-temperature space and DHW heating
Zone circuit capabilities provide 4 input connections that allow easy integration of third party components such as thermostats, SIM controls, Multi-zone controllers, and other smart or on/off control technologies
Commission assistant that prompts the installer for the relevant information necessary to setup the system without having to go into complex settings parameters
The unique capability allows the installer to combining temperature setpoint operation and outdoor reset capability. This means that one or all of the 4 zone circuits control can operate on a set temperature, or vary based on the outdoor reset curve that is selected in the start-up wizard
Control of up to 3 mixing valve circuits using mixing valve extension module (optional accessory)
Greater Venting Flexibility with increased vent length up to 180 ft. (55 m) and multiple venting options: Horizontal or vertical sealed combustion coaxial venting (field supplied), Horizontal, vertical or hybrid sealed combustion double-pipe venting (field supplied), Horizontal or vertical single-wall venting (field supplied)
Compact, Esthetic Product Design and zero clearance to combustibles
Extremely Quiet Operation
quieter than most refrigerators
True High-Altitude Operation up to 10,000 ft. (3,000 m) with simple electronic adjustment
Efficiency up to 98% through intensive condensation
The flue gas temperature is only approximately 9-27F (5-15C) above boiler return temperature
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