Burnham PVG & SCG Manuel D’Utilisation

Burnham’s PVG & SCG boilers offer a unique combination of high efficiency and value to 
homeowners. Available in direct vent (PVG) or sealed combustion (SCG) both models utilize either 
3 or 4-inch stainless steel vent pipe to direct the flue products out of the building. This eliminates 
the need to install a liner in an existing chimney – which is often a major expense when replacing 
an older boiler. 
PVG and SCG series boilers are simple to install, and require very little service and maintenance 
–especially compared to higher-efficiency condensing boilers. This can save homeowners hundreds 
of dollars in up-front installation costs, as well as several hundred dollars a year in maintenance 
and tune-up’s. Factoring in installation, annual service, and fuel usage - over time the operating 
costs of the SCG and PVG may be well below those of condensing boilers. While low temperature 
radiant heat systems are becoming more popular in newer buildings, many still utilize baseboard 
heat, convectors, air handlers. & indirect water heaters - which generally require higher water 
temperatures. Cast iron boilers are the best choice for these applications. The PVG and SCG deliver 
the winning combination of efficiency and durability in high-temp heating applications. 

PVG & SCG 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. The heat exchanger 
itself is designed for efficiency. Round pins on the outside of the 
exchanger increase the surface area which increases heat transfer. 
Inside, dimpled waterways promote turbulence as water flows 
through the castings. This helps to thoroughly mix cooler return water with the water inside 
the heat exchanger. As a result, PVG and SCG boilers are more resistant to thermal shock and 
condensation than other comparable boilers.  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.

The burner base in the PVG & SCG 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.  A 1/4” pilot tube provides an 
ample flow of gas which contributes to reliable burner 
performance. 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 keeps the heat 
generated in combustion directed upward toward the heat 
exchanger, not out into the boiler jacket and surrounding area.

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 PVG & SCG. 
•  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 hidden under the jacket to prevent damage & tampering.