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Viessmann Vitocrossal 300 - 160K BTU - 95% AFUE - Hot Water Gas Boiler - Direct Vent
Model:
CU3A-160
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Recommended Accessories
Expert Recommended Accessories
Selected by Ken, our Expert
Required Accessories
9
These accessories are required to properly setup/install this product.
Optional Accessories
10
Features
- High Mass (Water Volume)
- The Viessmann Vitocrossal 300 features a unique heat exchanger that provides space for a large amount of water. This allows the boiler to efficiently serve high-demand space heating sources, such as high temperature fin tube and high mass radiators.
- Advanced Condensing Technology
- The Vitocrossal 300 includes an Inox-Crossal heat exchanger that offers ideal conditions for intensive utilization of hot gases. The vertical orientation of the heat exchanger allows condensate to run off downwards, creating a self-cleaning effect.
- Award-Winning Control Unit
- The Viessmann-made Vitotronic 200, KW6B control manages the entire heating system and ensures maximum performance and comfort at all times. This user-friendly control features a backlit display, multi-line text and graphics for hassle-free boiler control.
- Outdoor Reset
- The Vitotronic 200 control includes an outdoor reset mode that can reduce fuel consumption up to 15%. The outdoor reset adapts the boiler's operating temperature to the changing outdoor temperature, allowing for excellent returns on an initial investment.
- Lambda Pro Combustion Management System
- Equipped with the state-of-the-art Lambda Pro combustion management system, the Vitocrossal 300 adapts combustion to changing gas qualities and operating conditions to optimize performance and efficiency.
Viessmann offers a comprehensive range of home comfort products that sets the standards for sustainability and efficiency. The Vitocrossal 300 is Viessmann's top-of-the-line boiler for residential and light commercial applications. The Vitocrossal 300 is known for its high temperature heating and water volume, all while maintaining an impressive 95% AFUE rating. Perfect for homes with multi-zone or high mass radiators, the Vitocrossal 300 features wide water passage ways that allows for simplified piping with full system flow. An intelligent combustion control along with a user-friendly Vitotronic 200 control makes the Vitocrossal 300 a favorite among owners looking for power and efficiency.
Specifications
CU3A-160
General Information
Product Line
Vitocrossal
Medium
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Hot Water
Fuel Type
Fuel Type
To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.
Natural Gas
Combustion Type
Combustion Type
Condensing appliances use leftover thermal energy from combustion gases to heat water in a secondary heat exchanger, resulting in higher efficiency and lower exhaust temperature.
Condensing
Vent Type
Vent Type
Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.
Direct Vent
DHW Production
DHW Production
DHW (Domestic Hot Water) is potable water for uses other than space heat. Some boilers are able to provide DHW "out of the box", while others can do so with the purchase of optional accessories.
No
Modulating/Staging
Modulating/Staging
Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More
Modulating
Mount Type
Floor
Minimum Altitude
0 Feet
Maximum Altitude
10000 Feet
Assembly Type
Packaged
Includes Pump
No
Gas Conversion Kit
Included
Performance
AFUE
AFUE
AFUE (Annual Fuel Utilization Efficiency) measures the efficiency of combustion equipment over the entire heating season, and is calculated by dividing the amount of energy that is actually heating your home by the total energy contained in the fuel used by the boiler/furnace. Learn More
95 %
Maximum Input Capacity
Maximum Input Capacity
The Maximum Input Capacity describes how quickly the appliance will use fuel when delivering it's maximum capacity. The units may change depending on the fuel being used.
160000 BTU
Minimum Input Capacity
43000 BTU
DOE Heating Capacity
DOE Heating Capacity
Also referred to as Gross Output, this is the output of a boiler after accounting for combustion efficiency. We recommend sizing hot water boilers based on the DOE Heating Capacity.
149000 BTU
Net I=B=R Capacity
Net I=B=R Capacity
I=B=R, also referred to as Net Output or AHRI Capacity, is the rated heat output of a boiler after accounting for combustion efficiency, piping loss, and an extra pickup factor. We recommend sizing steam boilers based on the I=B=R rating.
129000 BTU
Ultra Low NOx Emissions
Ultra Low NOx Emissions
NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Ultra Low NOx appliances emit less than 10-14 ng/J (nanogram per Joule) of NOx. Learn More
No
Low NOx Emissions
Low NOx Emissions
NOx is a byproduct of the combustion process, and it's output is regulated in some jurisdictions. Many regulators mirror SCAQMD rules, which regulate air quality for some parts of Southern California. Low NOx appliances emit less than 40 ng/J (nanogram per Joule) of NOx. Learn More
No
Turndown Ratio
4:1
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
4 Inches
Gas Connection Size
3/4 Inch
Boiler Supply
1 1/4 Inches
Boiler Return
1 1/4 Inches
Product Height
67 Inches
Product Width
26 Inches
Product Depth
31 1/2 Inches
Product Weight
352 Pounds
Shipping Weight
285 Pounds
Certifications
CSA Listed
Yes
Energy Star Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
10594293
Warranty Information
Parts Warranty
Parts Warranty
A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
2 Years
Heat Exchanger Warranty
10 Years
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Viessmann Vitocrossal 300 - 160K BTU - 95% AFUE - Hot Water Gas Boiler - Direct Vent
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