Burnham ESC4CNI-TS
Burnham ESC4CNI-TS
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Burnham ESC4C - 78K BTU - 85.2% AFUE - Hot Water Gas Boiler - Direct Vent



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Burnham ESC4C - 78K BTU - 85.2% AFUE - Hot Water Gas Boiler - Direct Vent
Burnham ESC4C - 78K BTU - 85.2% AFUE - Hot Water Gas Boiler - Direct Vent
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    Burnham is devoted to pushing the limits of heating technology and efficiency. Their ingenuity is responsible for some of the most efficient boilers on the market today. The ESC line of hot water boilers blends a reliable design with Burnham's cutting edge IQ Control System. ESC boilers save energy by doubling down on heat retention with an insulated jacket and plates. Possessing industry standard tapping locations, multiple venting options, and exceptional efficiency, the ESC4CNI-TS is an excellent replacement boiler or the perfect addition for new construction.
  • Intelligent Hydronic Control
  • Burnham's IQ system consists of two primary components: an IQ Option Panel and an Intelligent Hydronic Control. The IHC supports two setpoints, controls ignition, provides fan and circulator relays, and acts as an aquastat.
  • IQ Option Panel
  • The IQ Option Panel provides a standardized and simplified way to add functionality to your boiler. It supports Burnham's plug-and-play IQ Option Cards for outdoor reset, an auxiliary high limit, and low water cutoff.
  • Venting Options
  • All ESC boilers can be used in direct and power vent applications, affording you flexibility in terms of where you draw your combustion air from. The ESC4CNI-TS also includes stainless steel flue baffles which contribute to ideal combustion conditions.
  • Durable Construction
  • Cast-iron construction of the boiler sections and stainless steel burner tubes contribute to the incredible longevity of ESC models. The heat exchanger is also made of cast iron, which allows it to accept lower return water temperatures.
  • Product Includes
  • (1) Burnham ESC4CNI-TS Hot Water Boiler
  • (1) Vent Connector
  • (1) Vent Terminal
  • (1) Air Intake Terminal
  • (1) Taco 007-2 Circulator
  • (1) Miscellaneous Parts Carton
  • (1) Instruction Envelope
California residents see
Warning: This product can expose you to chemicals including Chromium (hexavalent compounds) which is known to the State of California to cause Developmental Harm.
For more information go to: www.p65Warnings.ca.gov


specs product image PID-64876
General Information
Product Line
Medium Learn More
Hot Water
Heat Exchanger Material
Cast Iron
Fuel Type Learn More
Natural Gas
Combustion Type Learn More
Vent Type Learn More
Direct Vent
DHW Production Learn More
Modulating/Staging Learn More
Single Stage
Mount Type
Minimum Altitude
0 Feet
Maximum Altitude
5000 Feet
Includes Pump
Assembly Type
Gas Conversion Kit
AFUE Learn More
85.2 %
Maximum Input Capacity Learn More
91000 BTU
DOE Heating Capacity Learn More
78000 BTU
Net I=B=R Capacity Learn More
68000 BTU
Ultra Low NOx Emissions Learn More
Electrical Data
120 Volts
60 Hz
Flue Connection Size
3 Inches
Gas Connection Size
1/2 Inch
Supply Connection
1 1/4 Inches
Return Connection
1 1/4 Inches
Product Height
41 Inches
Product Width
15 1/2 Inches
Product Depth
33 Inches
Product Weight
220 Pounds
Shipping Weight
300 Pounds
Country of Origin
United States
Energy Star Listed
ETL Listed
ASME Certified
AHRI Certified
AHRI Reference Number
Warranty Information
Parts Warranty Learn More
1 Year
Heat Exchanger Warranty
Limited Lifetime Years


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