Burnham Series 5B Boiler Brochura

Series 5B 

STEAM BOILER

The Burnham Commercial Series 5B boiler offers heating capacities 

and features that make it ideal for commercial, institutional and 

high rise residential heating applications. The rear outlet drafthood 

is specifically suited to installations with low ceiling heights.
The Series 5B boiler is rated at 15 PSI steam and has a thermal 

efficiency of 77%, meeting AHRI certification requirements.

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-of- 

the-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 con-

tract 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. 

Model Number

Gas Input (MBH)

Gross Output (MBH) Steam Rating Sq. Ft.

Steam (MBH)

Boiler H.P.

Thermal Efficiency

5006B

401

321

1,004

241

9.58

77%

5007B

468

375

1,171

281

11.04

77%

5008B

546

437

1,367

328

12.88

77%

5009B

624

500

1,558

374

14.73

77%

5010B

702

562

1,754

421

16.57

77%

5011B

780

624

1,950

468

18.41

77%

5012B

858

687

2,146

515

20.25

77%

5013B

936

749

2,342

562

22.09

77%

5014B

1,014

812

2,538

609

23.93

77%

5015B

1,092

874

2,729

655

25.77

77%

5016B

1,170

936

2,925

702

27.61

77%

5017B

1,248

999

3,121

749

29.45

77%

5018B

1,326

1,061

3,317

796

31.29

77%

5019B

1,404

1,124

3,513

843

33.13

77%

5020B

1,482

1,186

3,704

889

34.97

77%

5021B

1,560

1,248

3,900

936

36.82

77%

5022B

1,638

1,311

4,113

987

38.66

77%

5024B

1,794

1,436

4,546

1091

42.34

77%

5026B

1,950

1,560

4,975

1194

46.02

77%