7
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 111-W, type B1LD
Preset for operation with natural gas
The Vitodens 111-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 behind the front panel.
Product description
The Vitodens 111-W is equipped with a cylinder and an
integral plate heat exchanger as a cylinder loading
system for DHW heating. For the connection of heating
circuits and the DHW line, see page 11 onwards.
In the delivered condition, the Vitodens 111-W is set up
for operation with a constant boiler water temperature.
By connecting an outside temperature sensor (acces-
sories), the boiler can be operated in weather-compen-
sated mode.
The appliance is equipped with a sealed unvented
hydraulic system with 2 connections for the heating
flow and return and 2 connections for DHW heating.
The following components are integrated into the
hydraulic system:
■
Circulation pump
■
3-way diverter valve
■
Safety valve
■
Heating water expansion vessel and DHW expan-
sion vessel
■
Cylinder and plate heat exchanger for DHW heating
Connection accessories
Outside temperature sensor and time switch are con-
nected with low voltage to the control unit.
System examples
Available system examples: See
.
Spare parts lists
Information about spare parts can be found on the
Viessmann spare parts app.
Information
Intended use
(cont.)
5697789
Information
Summary of Contents for Vitodens 111-W
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