Product Overview

† At a 77 (degree sign) F maximum temperature rise with Vitodens 100-W, B1KA 35, 125
Stainless steel Inox-Radial heat exchanger
Modulating MaxtriX cylinder burner
Integral heating expansion tank (B1KA Combi boiler only)
Variable speed combustion fan for quiet
and economical operation
Integrated pump
Brazed -plate heat exchanger for convenient DHW heating
(B1KA Combi boiler only)
Backlit LCD touchscreen
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Vitodens 100-W,
B1KA Combi boiler
(Actual product varies from illustrated product image)
Benefits at a glance — Vitodens 100-W, B1HA
n Fits any home and budget with high performance at an
attractive price
n Outstanding efficiency of 95% A.F.U.E. on all models
n Fully-modulating input eliminates energy waste
n Lasting performance with proven Viessmann stainless steel Inox-
Radial heat exchanger constructed to CSA B51 and
ASME Section IV
n Low-emission combustion with fully-modulating Viessmann
stainless steel MatriX cylinder burner for natural gas or propane;
factory calibrated
n User-friendly backlit LCD touchscreen boiler control with vent
length up to 200’ and multiple venting options; rigid and flexible
PP(s) vent options
n Suitable for altitude levels of up to 10,000 ft. / 3,000 m
n Simple to install and service with 4 pipe hydronic connection
design with built-in primary pump and diverter valve
n Extremely quiet operation; quieter than most refrigerators
n Limited lifetime warranty in residential applications
n Ideal application for apartments, condos, cottages, single-family
homes, or installs where space is at a premium
Benefits — Vitodens 100-W, B1KA Combi boiler
n All the benefits of a Vitodens 100-W boiler, plus built-in on-demand
domestic hot water (DHW) – no need for an additional storage tank
n DHW at the snap of your fingers all day long! Up to 3.5 GPM
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n Optimized load matching with up to 6:1 turndown ratio
n Energy-saving and low-cost, on-demand indirect-fired DHW production
n Conforms to NSF/ANSI 372 for Low Lead Content
n Quality you can count on! Stainless steel heat exchanger, built-in
pressure bypass and 150 psig working pressure rating (on DHW side only)
n Reliable and consistent DHW supply with built-in DHW temperature
and flow sensors
n Complete space / DHW heating management by boiler control,
powerful built-in 3-speed pump and diverting valve