VIESSMANN® Vitocrossal 300 CU3A CU3A-125 Gas Fired Boiler, 95 % AFUE, 125000 Btu, 13 gal Capacity, 120 V, FNPT, MNPT

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. With its combination of high temperature capability, high mass, floor standing design, condensing stainless steel construction and modulating gas burner, the Vitocrossal 300, CU3A is the ideal choice for boiler retrofits or new construction. From homes equipped with high mass cast iron radiators, to homes with multi-zone high temperature fin tube radiators and new installations with high DHW requirements - the Vitocrossal 300, CU3A is the best choice on the market today. The proven MatriX dome gas burner with Lambda Pro combustion control automatically adjusts to fluctuating gas qualities and ensures a consistently high combustion efficiency for both natural gas and propane gas. The vertical stainless steel Inox-Crossal heat exchanger offers ideal conditions for intensive utilization of hot gases, resulting in efficiencies of up to 98%. The smooth stainless steel surfaces allow the condensate created by the condensing process to simply run off downwards. This creates a permanent self-cleaning effect, ensuring high efficiency, long service life and reduced maintenance.

VIESSMANN® Vitocrossal 300 Gas Fired Boiler, Model: CU3A, 120 V, 12 A, 36.6 kW Power, 60 Hz Frequency, 95 % AFUE, 125000 Btu, 13 gal Capacity, 30 psi Pressure, FNPT, MNPT Connection, LPG, Natural Gas Fuel, Coaxial Vent, MatriX Dome Burner, Chimney/Breeching/Vent Size: 198 ft, 23.3 to 116 mbh DOE Heating, 3 in Flue Outlet, 20.7 sq-ft Area, Floor Mounting, Stainless Steel, 194 deg F, Dimensions: 67 in H x 26 in W x 31-1/2 in D

• Wide water passageways for full flow
• Multi-boiler installation up to 1592 mbh
• Self-calibrating combustion system
• No dedicated boiler pump required
• 95% AFUE rating on all models
• Operating temperature up to 194 deg F
• High water volume extends burner runtime and reduces short cycling
• And 5:1 turndown ratio with MatriX dome gas burner
• With Inox-Crossal stainless steel heat exchanger and high mass design
• Multiple venting options and configurations with vent lengths up to 198 ft
• Best value in its class with industry leading technology and the most standard features
• Compact, floor standing boiler with zero clearance to combustibles
• Self-calibrating Lambda Pro combustion management system ensures optimal combustion efficiency at all times regardless of gas/air quality
• Low emission combustion for environmentally friendly operation
• Zone circuit capabilities provide three input connections that allow easy integration of third party components
• Extremely quiet operation, quieter than most refrigerators
• User-friendly Vitotronic outdoor reset boiler and system control for multi-temperature space and DHW heating
• High altitude operation up to 10000 ft

• Instruction/Installation Manual https://assets.unilogcorp.com/267/ITEM/DOC/VIESSMANN_CU3A_125_Instruction_Installation_Manual.pdf
• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/VIESSMANN_CU3A_125_Specification_Sheet.pdf
• Warranty Information https://assets.unilogcorp.com/267/ITEM/DOC/VIESSMANN_CU3A_125_Warranty.pdf