Preparing For Installation - Viessmann Vitodens 100 Series Installation And Service Instructions Manual

Preparing for installation

Preparing for installation
Product information
Vitodens 100
Preset for operation with natural gas.
The Vitodens 100 may only be deliv-
ered to countries listed on the type
plate. For deliveries to other countries,
approved contractors must arrange
individual approval on their own initia-
tive and in accordance with the law of
the country in question.
Product description
The Vitodens 100 is supplied as a gas
condensing boiler for connection to a
DHW cylinder, or as a gas condensing
combi boiler with an integral instantane-
ous water heater for DHW heating.
The boiler is equipped with a hydraulic
system with the following components:
■ Circulation pump
■ 3-way diverter valve
■ Safety valve
■ Diaphragm expansion vessel
■ Plate heat exchanger (gas condens-
ing combi boiler)
12
■ Connections for heating water flow
and return
■ Connections for cylinder flow and
return (gas condensing system
boiler)
■ Connections for cold water and DHW
(gas condensing combi boiler)
In the delivered condition, the
Vitodens 100 CC is set up for operation
with a constant boiler water tempera-
ture. By connecting an outside temper-
ature sensor, available as an acces-
sory, the boiler can be operated in
weather-compensated mode. In this
case, a room temperature controller
should always be connected as well.
This prevents heat being generated
unnecessarily, for example at night, due
to the lower outside temperatures.
If a Viessmann DHW cylinder is con-
nected, the request for cylinder heating
is made via a cylinder temperature sen-
sor. The cylinder temperature sensor is
connected to the control unit.