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PVG
SCG
&
High Efficiency Direct Vent and Sealed Combustion Cast Iron Water Boilers
Unbeatable Efficiency & Value!
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.
Reliable Cast Iron Heat Exchanger
P VG & 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.
A Better Burner Base
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.
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 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.
Thick Insulation
Isolated Combustion Area
Lock-in
Burner Slots
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