Manual
1-800-283-3787 www.buderus.net
1-800-283-3787 www.buderus.net
www.buderus.net
Intelligent Heating – By Design
The G115WS is designed in Europe where fuel costs are significantly higher and
environmental regulations are more stringent. Using state of the art techniques in the
design and manufacturing process, the G115WS is built to maximize the heating value of
every ounce of fuel and constructed with the highest quality materials.
Manufactured without a heat-consuming refractory or target wall, service and
maintenance calls are minimized, while fuel efficiency and heat transfer is maximized.
The patented Buderus GL-180M flexible cast iron ensures that the boiler resists thermal
shock under conditions of rapid temperature change. Sections are securely joined
together and sealed by profiled, beveled steel push nipples, ensuring a long life with no
leakage. Special compounds provide a gas-tight seal for safe and efficient operation. The
full 3" thermal insulation around the boiler, including underneath, increases efficiency by
almost eliminating standby and stack temperature losses.
Buderus, the World leader in heating technology, manufactures the highest quality boilers
based on centuries of experience. With its innovative design and quality manufacturing,
a Buderus boiler will outlast and out-perform virtually any other residential hot-water
system in the world.
Once you have a Buderus boiler you can add a Buderus indirect fired hot water tank, an
optional Buderus Logamatic control or both. The Logamatic control maximizes your comfort
and fuel savings, it will also accommodate specialized heating applications such as radiant
flooring. Combined, this premium heating system will provide years of exceptional comfort
and economy... for little more than cost of a standard replacement components.
Complete your system for added comfort
to your home!
Adding a Buderus Logamatic control will give
you the ultimate in comfort and fuel savings.
Microprocessor-based controls allow the
Logamatic to intelligently manage both
your home heating and domestic hot water.
The Logamatic has 16 standard functions
including day/night setback, automatic
summer/winter changeover and even a
vacation mode. Set it once and relax in the
comfort of your warm home.
Need domestic hot
water? Then combine
your Buderus boiler
with a Buderus indirect
hot water tank. A
Buderus tank is so
well insulated that it
loses less than ¼º per
hour. Available in a
vertical, or a horizontal
space saving model
that installs under the boiler, these tanks
have a higher recovery rate than stand
alone or tankless coil models. While a
Buderus boiler works great with any hot
water tank – you can be sure of increased
boiler efficiency, system longevity and
minimized service calls when you insist on
a Buderus tank and boiler.
Domestic Hot Water Tanks
Convenient Logamatic Control
The G115WS modified three-pass
boiler is designed for:
How it works.
The flame fires into the first chamber. Then the
flue products flow through the second pass to
the front of the boiler. From there they reverse
direction again —moving through the third
pass to the back, and finally exiting via the flue
connection into the chimney. Because the
gases are held in the boiler longer this allows
the cast iron to absorb the maximum amount of
heat, resulting in a lower stack temperature and
a higher efficiency.
Optimized combustion with positive
pressure-fired boilers and tailored
chamber geometry — no need for a
heat-consuming refractory or target wall
eliminating the need for costly repairs.
Minimal stack losses with the modified
three-pass flue design’s large heat
transfer areas.
Low standby losses with a full 3" jacket
of thermal insulation around the entire
block — even underneath the boiler!
The modified three-pass boiler: