Product Overview

The Best Selling Gas Boiler In America!
Since it’s introduction over 20 years ago, the Series 2 has earned a reputation for
safety, reliability and durability. With a robust cast iron heat exchanger, long lasting
stainless steel burners, over two decades of refinement, and over two million installed
in North America, the Series 2 remains one of the most popular choices for those
seeking a reliable, long-lasting gas boiler.
Reliable Cast Iron Heat Exchanger
Series 2 boilers have rugged cast iron heat
exchanger sections that are poured in Burnham’s
own state-of-the-art foundry in Zanesville, Ohio.
This means that Burnham is able to control the
quality of this vital component from the time
that it’s poured to the time that it’s installed
and tested in the boiler. Burnham is the only
domestic boiler manufacturer that can make
this claim. The heat exchanger itself features large waterways and thick nipple ports
which promote even heat transfer. Steel nipples are used to join sections together.
This vital component is impervious to petroleum-based chemicals (like antifreeze)
which can break down the rubber gaskets that are used by competitors.
A Better Burner Base
The burner base in a Series 2 has been
engineered to deliver on Burnham’s
ongoing commitment to safety, reliability,
and durability. Underneath it’s simple two
piece design sits stainless steel burner
tubes which are secured by lock-in burner
slots. An isolated combustion area beneath
the burner tubes optimizes airflow and
keeps floor temperatures low beneath the
boiler. The combustion chamber itself is
lined with thick 1” insulation on the sides
and 1-1/2” insulation on the rear. This
directs the heat generated in combustion
upward into the heat exchanger, not out
into the boiler jacket and surrounding area.
The superior overall design of the Series 2 burner base
results in more BTUs being directed into the heating system,
and less energy wasted in the combustion process.
Safety Without Compromise
Burnham’s reputation for building safe products is an ongoing commitment that is
taken very seriously. Many additional safety features have been built into the Series 2.
• Blocked Vent Switch
Safely shuts the boiler down if a chimney or vent blockage is detected.
•
Flame roll-out switch
If an internal flueway restriction is detected, this device will automatically stop
the flow of gas to prevent combustion gases from seeping into the home.
•
Concealed Controls
All boiler controls are safely concealed underneath the boiler jacket to prevent
damage and tampering.
Gas-Fired, Natural Draft, Cast Iron Water Boiler
Series 2
Thick
Insulation
Isolated
Combustion Area
Lock-in
Burner Slots