Product Overview

Every home. Every budget.
With its outstanding design and price/
performance ratio, the Vitodens 100-W is
the perfect mix of performance and value.
Its compact design, zero clearance to
combustibles and extremely quiet operation
make the Vitodens 100-W an ideal choice even
in the smallest of spaces. Plus, with a limited
residential lifetime warranty, you can be sure
your investment will deliver long-lasting value
year after year.
Reliable and consistent performance
Stainless steel is the best choice for long-term
reliability. That’s why the Vitodens 100-W is
equipped with a stainless steel Inox-Radial
heat exchanger and MatriX cylinder burner.
Developed and manufactured by Viessmann,
these high-quality stainless steel components
maximize performance and reliability. Plus, the
“self-cleaning” heat exchanger contributes to
the boiler’s long service life and dependable
performance.
Outstanding versatility
The Vitodens 100-W offers the right solution
for every demand – from multiple venting
options to fuel flexibility (NG or LP) right out
of the box. Plus, installation, service and
maintenance are designed to be fast and easy
with all pipe connections located at the bottom
and serviceable components easily accessible
from the front.
Helps you save
Select an easy-to-use room thermostat and
utilize the boiler’s on-board control, which
automatically adjusts the boiler water to
outdoor temperatures. This not only boosts
fuel savings, but also keeps your home
warm and comfortable at all times. Now
optimized outdoor reset capability provides
more precise temperature calculations.
User-friendly touchscreen control unit
The Vitodens 100-W gas condensing
boilers are controlled by the new, one
hand touchscreen control with enhanced
programming. The backlit LCD touchscreen
display offers excellent readability even
under poor lighting conditions.
On-demand DHW with Vitodens 100-W,
B1KA Combi boiler
High-efficiency domestic hot water (DHW)
and space heating are now combined in
the new Vitodens 100-W, B1KA Combi
boiler. Say goodbye to your DHW tank and
experience reliable hot water all day long
with an outstanding flow rate of up to
3.5 GPM†, plus added cost savings with
the energy-saving on-demand indirect-fired
design. Installation is easy with the new
Combi boiler as the brazed-plate stainless
steel heat exchanger, pressure bypass
valve, DHW temperature and flow sensors,
3-speed pump and 3-way diverting valve are
built-in to form one compact, lightweight,
space saving unit.
Gas Condensing
Technology
Vitodens 100-W – 21 to 125 MBH
Space Heating and On-Demand DHW with Combi boiler
Stainless steel, Viessmann-made Inox-
Radial heat exchanger
Low-emission, Viessmann-made MatriX
cylinder burner
Backlit LCD touchscreen
† At a 77 (degree sign) F maximum temperature rise with Vitodens 100-W, B1KA 35, 125
0 20 40 60 80 100 120 140 160
B1KA 35, 125 model
21,000 125,000
B1HA 35,125 model
21,000 125,000
B1HA 26, 94 model
21,000 94,000
149,000
DHW
boost
Capacities (NG Inputs) Btu/h
Optimized load matching with up to 6:1 turndown ratio