7
The appliance is intended solely for installation and
operation in sealed unvented heating systems that
comply with EN 12828, with due attention paid to the
associated installation, service and operating instruc-
tions. It is only designed for heating up heating water
that is of potable water quality.
Intended use presupposes that a fixed installation in
conjunction with permissible, system-specific compo-
nents has been carried out.
Commercial or industrial usage for a purpose other
than heating the building or DHW shall be deemed
inappropriate.
Any usage beyond this must be approved by the man-
ufacturer in each individual case.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and will result in an exclusion of liability. Incorrect
usage also occurs if the components in the heating
system are modified from their intended use (e.g. if the
flue gas and ventilation air paths are sealed).
Product information
Vitodens 100-W, type B1HC, B1KC
Preset for operation with natural gas
The Vitodens 100-W may only be delivered to the
countries specified on the type plate. For deliveries to
other countries, approved contractors must arrange
individual approval on their own initiative and in
accordance with the law of the country in question.
The type plate is located on the top of the boiler (see
page 61).
Product description
The Vitodens 100-W is available as a gas condensing
system boiler for the connection of one DHW cylinder
and as a gas condensing combi boiler with an integral
plate heat exchanger for DHW heating. For the con-
nection of heating circuits and the DHW cylinder or the
DHW line, see page 12 onwards.
In the delivered condition, the Vitodens 100-W is set
up for operation with a constant boiler water tempera-
ture. By connecting an outside temperature sensor
(accessories), the boiler can be operated in weather-
compensated mode.
The following are integrated: one sealed unvented
hydraulic system with 2 connections for heating flow
and return, and 2 connections for cylinder heating (gas
condensing system boiler) or DHW heating (gas con-
densing combi boiler).
These boilers are only intended for installation in
sealed unvented heating systems. Boilers for open
vented heating systems are also available.
If the Vitodens 100-W is installed in an S plan or Y
plan system, the two internal connections are not used
and must be capped off during installation.
The following components are integrated into the
hydraulic system:
■Circulation pump
■3-way diverter valve
■Safety valve
■Diaphragm expansion vessel
■Plate heat exchanger for DHW heating (gas con-
densing combi boiler)
DHW heating with DHW cylinder
If a Viessmann Vitocell is connected, a cylinder tem-
perature sensor will issue the heat demand (accesso-
ries). The cylinder temperature sensor is connected to
the boiler control unit. A 230 V cylinder temperature
controller is not required.
If a different DHW cylinder is connected, the cylinder
temperature sensor (accessories) may also be used
on this cylinder. Alternatively, a 230 V cylinder temper-
ature controller should be connected via the cylinder
demand junction box (part of the boiler standard deliv-
ery).
Information
Intended use
5697 787 GB
Information
