Item Features
- Integrated Valve Proving System (VPS) for all sizes
- Up to 98% thermal efficiency, the highest degree of utilization in its class with cleaner combustion and lower costs
- Highest water volume in class; no primary boiler pump required
- Efficient combustion control with Lambda PrO2 with Self Calibrating Active O2 Trim Technology; realtime O2 trim, fuel conversion and altitude adjustment with push of a button
- High operational reliability and long service life with corrosionresistant Inox-Crossal stainless steel heat exchanger; class leading low pressure drop and thermal efficiency
- Up to 30:1 modulating MatriX cylinder burner ensures long, uninterrupted operation; meets Low NOx certification
- Cascading of up to 16 devices possible (up to 32,000 MBH)
- Viessmann One Base Control Platform enables control via ViGuide* app and use of digital services
- Compact dimensions and small footprint boast an unprecedented density ratio; allowing for optimal side by side installation even in the tightest spaces
- Integrated installation features for peak mobility





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