Viessmann - Boiler, Floor Standing, CU3A 160 Vitocrossal 300, 160k Btu input, 40-149k Btu output, 95% efficient, 3/4" gas connection, 1-1/4" heating supply & return, 4" PPS flue vent, 3" PVC intake vent, with Vitoconnect (Free Shipping)

Vitocrossal 300 CU3A is a gas-fired floor-standing boiler with stainless steel Inox-Crossal heat exchanger and MatriX dome gas burner. Rated input: 19 to 199 MBH.

Features:

• Best value in its class with industry-leading technology and the most standard features.
• Self-calibrating Lambda Pro combustion management system ensures optimal combustion efficiency at all times regardless of gas/air quality.
• Zone circuit capabilities provide 3 input connections that allow easy integration of third-party components.
• User-friendly Vitotronic outdoor reset boiler and system control for multi-temperature space and DHW heating.
• Compact, floor-standing boiler with zero clearance to combustibles.
  

• Low-emission combustion for environmentally-friendly operation.
• Extremely quiet operation; quieter than most refrigerators.
• High-altitude operation up to 10,000 ft (3,000 m).