Please ensure Javascript is enabled for purposes of website accessibility

We are closed on Friday, July 4th, 2025 for Independence Day weekend and reopening Monday July 7th, 2025. Enjoy and be safe.

  • Sign In
  • Create an Account

Need Help?   Email:

Toggle Nav
Cart Icon Cart
Search
We ship to most places in continental USA
Chat with us
Need help
Our Locations

Burnham K5009SNEI-2, 5B Series, 624 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)

SKU
K5009SNEI2

Out of Stock
Click Here for Shipping Cost by Destination
Retail : $13,190.24 - $3297.56 =
$9,892.68 You Save (25%)
624,000
Burnham K5006SNEI-2, 5B Series, 401 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5007SNEI-2, 5B Series, 468 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5008SNEI-2, 5B Series, 546 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Selected
Burnham K5009SNEI-2, 5B Series, 624 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5010SNEI-2, 5B Series, 702 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5011SNEI-2, 5B Series, 780 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5012SNEI-2, 5B Series, 858 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
624,000
Burnham K5006SNEI-2, 5B Series, 401 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5007SNEI-2, 5B Series, 468 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5008SNEI-2, 5B Series, 546 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Selected
Burnham K5009SNEI-2, 5B Series, 624 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5010SNEI-2, 5B Series, 702 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5011SNEI-2, 5B Series, 780 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
Burnham K5012SNEI-2, 5B Series, 858 Input MBtu, 77% AFUE, Commercial Electronic Ignition, Natural Gas-Fired Steam Boiler, Atmospheric Vent, 10 Year Warranty (Knockdown - Assembly Required)
main product photo

Product details

Burnham K5009SNEI-2 5B Series 624 Input MBtu - 77% AFUE - Commercial Gas-Fired Steam Boiler - Atmospheric Vent (Knockdown - Assembly Required)

The Series 5B boiler offers the capacities and features that make it ideal for commercial, institutional, and multi-family heating applications, where the simplicity of an atmospheric design is desired. The rear outlet drafthood is specifically designed for installation involving low ceiling heights. Shipped as a knocked-down unit, the Series 5B allows for maximum maneuverability into the boiler room. The boiler is also available with factory-assembled sections.

Product Features :

Low Drafthood :

 The Series 5B boiler was specifically designed to use a low-profile drafthood, so it will fit easily into basements and boiler rooms that have low ceilings.

Three Firing Sequences :

Because the Series 5B uses controls that are commonly available in most HVAC and plumbing warehouses, it is easier to service and maintain than the more sophisticated forced-draft type boilers. However, the Series 5B is available with optional Low-High-Off, Low-High-Low, and Modulating firing sequences, for those applications where efficiency and advanced control capability are required.

Options :

Domestic hot water requirements are easy to meet with the optional tankless heater, which can be installed in one or both ends of the section assembly. Common available controls make the Series 5B easy to maintain and service. Gas Controls meeting full requirements of ANSI Z21.13 ensure that the Series 5B meets stringent safety standards, and the low-profile drafthood is ideal for low-ceiling applications.

Highlights :

  • Natural or LP Gas
  • Water or Steam
  • 401 to 1,950 MBH Input
  • Atmospheric Draft
  • Cast Iron Sectional Design
  • Knockdown or Assembled Sections

Burnham Boilers 5B Series

Series 5B COMMERCIAL ATMOSPHERIC GAS-FIRED STEAM BOILER

    1. Boiler Model Prefixes: K - Knockdown; A - Assembled Sections. Suffixes: S - Steam. N - Natural Gas; P - LP Gas. EI - Electronic Ignition;OP - Electronically Supervised Standing Pilot with Control Panel; EP - Electronically Supervised Electronic Ignition with Control Panel. (All Series 5B boiler models reach a combustion efficiency of 77%.)
    2. Ratings provided are for installations from sea level to 2000 ft. elevation. For altitudes above 2000 ft.: USA—Reduce ratings 4% for each 1000 ft. above sea level. Canada—certified for use at altitudes to 4500 ft. above sea level. Each installation, however, must be authorized by local authorities.
    3. LP gas ratings reduced 6-1/4% from natural gas ratings.
    4. Net I=B=R ratings shown are based on normal I=B=R piping and pick-up factor. Steam:1.333 (5006B thru 5021B), 1.329 (5022B), 1.317 (5024B), 1.307 (5026B).
    5. Net ratings are U. S. A. only.
    6. Based on year-round use with 6 ft. breechings and no more than one elbow. Chimney height measured from installation floor line to chimney top. Flue size based on nominal size of unlined chimney. Flue lined with largest flue liner which will fit within these dimensions is constructed to have the same effective flue area. Individual vents—If boiler is equipped with individual vertical vent riser(s) of same size as flue outlet(s) on draft divert(s), these vent(s) should not be less than 5 ft. in height as measured from top of drafthood. For other chimney and breeching combinations, consult the manufacturer.

American-Made Cast Iron Construction

  • Burnham Commercial’s unique cast iron formula has an extremely high silicon content, making it stronger and more flexible. It offers better thermal shock resistance and greater heat transfer capabilities than other cast iron products.

MANUFACTURED WITH QUALITY

  • Casting Solutions operates a state-ofthe-art foundry, in Zanesville, Ohio, ensuring quality and availability of boiler sections.

CAST IRON NIPPLE DIFFERENCE

  • The gaskets that other manufacturers use to connect boiler sections can break down if they come in contact with oils, boiler flue gases, corrosion inhibitors, pump lubricants, and antifreeze. Burnham Commercial is committed to safety, reliability and durability. That’s why the Series 5B uses cast iron nipples instead of gaskets. The Series 5B’s cast iron nipples remain unaffected by those elements, ensuring long life and eliminating costly repairs. Cast iron nipples expand and contract with the sections they connect, ensuring the overall integrity of the section assembly.

HEAT EXCHANGER DESIGN

  • The cast iron heat exchanger on the Series 5B features a pinned heating surface. These multi-faceted pins allow the heat generated from the combustion process to be transferred to the cast iron from a number of angles, which contributes to the boiler’s overall efficiency. A vertical flue design extracts heat while maintaining low draft losses.

Standard Equipment

    ALL BOILERS:
    • Sections unassembled including left and right heater ends; heater opening cover plates; base-burner manifold assembly: one assembly 5006B thru 5014B, two sub-assemblies 5015B thru 5026B; on-off firing gas control assembly; deluxe insulated jacket; rear outlet drafthood.
    STEAM TRIM:
    • 15 PSI safety valve, steam gauge, gauge glass set, L404A high limit control, #67 BC2 LWCO.
    USA BOILERS:
    • EI- Electronic control set: one set - 5006B thru 5014B, two sets - 5015B thru 5026B; provides electronic ignition; 100% safety shutoff; electronic supervision of pilot and intermittent pilot operation. Set includes: S8610M ignition control; Q3481B pilot with flame sensor; gas train for 5006B thru 5009B is Robertshaw 7000 DERHC combination gas valve; gas train for 5010B thru 5026B consists of dual V88A gas valves, Q3481B pilot, RV12 pilot regulator, pilot shutoff valve, main gas pressure regulator; 24V transformer furnished with all valve sets.

    Optional Equipment

    • Assembled sections; Firing sequences: Motorized valve type low-high-off and low-high-low or combination diaphragm gas valve/regulator on low-high-low.

    Electronic control sets:

    • OP- manual ignition, continuous pilot flame, with prewired control panel including RM7890A flame safeguard and indicating lights for power on, gas valve on and flame failure;
    • EP- electronic ignition, intermittent pilot operation, with prewired control panel including RM7890A flame safeguard and indicating lights for power on, gas valve on and flame failure.
    • CSD-1 and factory mutual components are available, consult factory.
Burnham
See All Burnham Products

Specification Sheet

Product Specifications Installation Manual
Basic Information
MPN ? Manufacturer Part Number K5009SNEI-2
UPC / GTIN 672616515249
Manufacturer Burnham
Series ? A manufacturer's grouping of items that match, coordinate, or complement each other. 5B Series
Dimensions and Measurements
Weight ? Weight 1,720.00
BTU Input 624,000
AFUE 77%
Characteristics and Features
Boiler Type Commercial
Fuel Type Natural Gas
Venting Atmospheric Vent
Venting Type Atmospheric Vent
More from Burnham
  1. Burnham X-208N-TH, X-2, 245 Input MBtu, 84% AFUE, LWCO Integrated in Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Taco 007e Pump (Altitude up to 10,000 feet)
    Burnham X-208N-TH, X-2, 245 Input MBtu, 84% AFUE, LWCO Integrated in Natural Gas Water Boiler, Chimney Vent, Limited Lifetime Warranty with Taco 007e Pump (Altitude up to 10,000 feet)
    Retail : $5,105.00 - $893.38 =
    $4,211.62 You Save (18%)
    Add to Compare
  2. Burnham 102512-01 Wiring Harness Pwr, SC, ES2, Series 3
    Burnham 102512-01 Wiring Harness Pwr, SC, ES2, Series 3
    Retail : $22.00 - $5.5 =
    $16.50 You Save (25%)
    Add to Compare
  3. Burnham 102706-01 120 Voltage Inducer Blower Motor Assembly 3300 RPM
    Burnham 102706-01 120 Voltage Inducer Blower Motor Assembly 3300 RPM
    Retail : $497.39 - $74.61 =
    $422.78 You Save (15%)
    Add to Compare
  4. Burnham 105758-01 Blower Replacement Kit, Sizes 210 (Includes Blower & Gaskets)
    Burnham 105758-01 Blower Replacement Kit, Sizes 210 (Includes Blower & Gaskets)
    Retail : $1,394.28 - $207.94 =
    $1,186.34 You Save (15%)
    Add to Compare
Document

Click Here to Explore All Boilers

Related Categories

Boilers

Boiler Parts

Burners

Boiler Components

Tankless Coils

Furnaces


By using this site you agree to our Terms, Conditions of Use and Privacy Statement © 2025 AF Supply Corp. All Rights Reserved.