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Burnham K2 - 112K BTU - 95% AFUE - Combi Gas Boiler - Direct Vent

Burnham K2 - 112K BTU - 95% AFUE - Combi Gas Boiler - Direct Vent
Model: K2WTC-135B-6T00
(Based on expert analysis, manufacturer ratings and customer reviews)
$2,299.00
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Ships in 7-14 Business Days
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Ships in 7-14 Business Days
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  • Product Description
  • Reviews
  • Product Q&A
  • Recommended Accessories
  • How-To Articles
  • Manuals
Product Description
+
Features
Features
    The Burnham K2 Combi is a high efficiency condensing combi boiler working as a hydronic boiler and tankless water heater. With a 10:1 turn down ratio and a variable speed combustion blower, the K2 Combi is incredibly efficient, reaching an AFUE rating of 95%. The K2 Combi line also introduces the Sage2.3 boiler control system with easy setup and high performance right out of the box.
  • Heating and Domestic Hot Water Production
  • The K2 Combi combines domestic hot water and space heating, all in an efficient 95% AFUE package. This unit can provide 3.3 gallons per minute at a 70 degree temperature rise.
  • Sage2.3 Control System
  • The Sage2.3 system has a simple touchscreen interface built into the boiler. The system provides step-by-step instructions for changing settings and running system diagnostics, making the K2 one of the most user friendly boilers on the market.
  • Compact Design
  • A compact and versatile design allows the K2 Combi boiler to be wall hung with the pre-installed bracket and wall mount kit, keeping the K2 Combi up and out of the way.
  • Outdoor Reset
  • The K2 Combi increases efficiency by including an outdoor sensor, allowing the boiler to lower water temperatures when the outdoor temperatures are warmer.
  • Product Includes
  • (1) Burnham K2WTC-135B-6T00 Combi Gas Boiler
  • (1) Wall Mounting Kit
  • (1) Taco Circulator
Specifications
General Information
Product Line
K2 Combi
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
Heat Exchanger Material
Stainless Steel
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
Condensing
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 (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.
Yes
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
Wall
Minimum Altitude
0 Feet
Maximum Altitude
10100 Feet
Includes Pump
Yes
Assembly Type
Packaged
UPC
672616765224
Performance
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.
120000 BTU
Minimum Input Capacity
12000 BTU
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.
112000 BTU
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.
97000 BTU
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 %
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
Yes
Turndown Ratio
10:1
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
3 Inches
Gas Connection Size
0.5 Inches
Supply Connection
1 Inch
Return Connection
1 Inch
Product Height
30 Inches
Product Width
17 Inches
Product Depth
15 Inches
Shipping Weight
109 Pounds
Certifications
Energy Star Listed
Yes
ETL Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
10347142
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Features
Features
    The Burnham K2 Combi is a high efficiency condensing combi boiler working as a hydronic boiler and tankless water heater. With a 10:1 turn down ratio and a variable speed combustion blower, the K2 Combi is incredibly efficient, reaching an AFUE rating of 95%. The K2 Combi line also introduces the Sage2.3 boiler control system with easy setup and high performance right out of the box.
  • Heating and Domestic Hot Water Production
  • The K2 Combi combines domestic hot water and space heating, all in an efficient 95% AFUE package. This unit can provide 3.3 gallons per minute at a 70 degree temperature rise.
  • Sage2.3 Control System
  • The Sage2.3 system has a simple touchscreen interface built into the boiler. The system provides step-by-step instructions for changing settings and running system diagnostics, making the K2 one of the most user friendly boilers on the market.
  • Compact Design
  • A compact and versatile design allows the K2 Combi boiler to be wall hung with the pre-installed bracket and wall mount kit, keeping the K2 Combi up and out of the way.
  • Outdoor Reset
  • The K2 Combi increases efficiency by including an outdoor sensor, allowing the boiler to lower water temperatures when the outdoor temperatures are warmer.
  • Product Includes
  • (1) Burnham K2WTC-135B-6T00 Combi Gas Boiler
  • (1) Wall Mounting Kit
  • (1) Taco Circulator
Specifications
General Information
Product Line
K2 Combi
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
Heat Exchanger Material
Stainless Steel
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
Condensing
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 (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.
Yes
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
Wall
Minimum Altitude
0 Feet
Maximum Altitude
10100 Feet
Includes Pump
Yes
Assembly Type
Packaged
UPC
672616765224
Performance
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.
120000 BTU
Minimum Input Capacity
12000 BTU
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.
112000 BTU
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.
97000 BTU
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 %
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
Yes
Turndown Ratio
10:1
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
3 Inches
Gas Connection Size
0.5 Inches
Supply Connection
1 Inch
Return Connection
1 Inch
Product Height
30 Inches
Product Width
17 Inches
Product Depth
15 Inches
Shipping Weight
109 Pounds
Certifications
Energy Star Listed
Yes
ETL Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
10347142
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Product Specs
+
Specifications
General Information
Product Line
K2 Combi
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
Heat Exchanger Material
Stainless Steel
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
Condensing
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 (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.
Yes
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
Wall
Minimum Altitude
0 Feet
Maximum Altitude
10100 Feet
Includes Pump
Yes
Assembly Type
Packaged
UPC
672616765224
Performance
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.
120000 BTU
Minimum Input Capacity
12000 BTU
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.
112000 BTU
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.
97000 BTU
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 %
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
Yes
Turndown Ratio
10:1
Electrical Data
Voltage
120 Volts
Phase
1
Frequency
60 Hz
Dimensions
Flue Connection Size
3 Inches
Gas Connection Size
0.5 Inches
Supply Connection
1 Inch
Return Connection
1 Inch
Product Height
30 Inches
Product Width
17 Inches
Product Depth
15 Inches
Shipping Weight
109 Pounds
Certifications
Energy Star Listed
Yes
ETL Listed
Yes
ASME Certified
Yes
AHRI Certified
Yes
AHRI Reference Number
10347142
Warranty Information
Parts Warranty A warranty is a safeguard from defects in manufacturing and can vary in length and terms. To see the manufacturer's warranty statement, click on the Manuals tab. Learn More
5 Years
Reviews
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How-To Articles
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