Appliance Description; Introductory Information - Viessmann Vitotronic 200 Operating Instructions Manual

Appliance description

Heat pump control unit
The Vitotronic 200 heat pump control unit, type WO1C
controls all functions of your heating system with heat
pump and mechanical ventilation.
Heat pump types
Air/water heat pumps
Air/water heat pumps utilise energy from the ambient
air to generate heat. To achieve this, a fan draws the
ambient air through a heat exchanger (evaporator). In
the evaporator, the thermal energy from this ambient
air is transferred to the refrigerant circuit. Here, the
temperatures necessary for central heating and DHW
heating are generated. The refrigerant circuit is driven
by the compressor.
To provide central cooling, the refrigerant circuit oper-
ates in reverse. Heat is extracted from your rooms and
transferred to the ambient air via the evaporator.
Note
Air/water heat pumps can have two stages. Two-stage
air/water heat pumps have 2 compressors which can
be activated individually or simultaneously subject to
the requested heating output.
Air/water heat pumps are available in the following
casing/installation versions:
Heat pump for indoor installation
■ All of the heat pump components, including the heat
pump control unit, are housed in a casing and instal-
led inside the building. The outdoor air is brought to
the heat pump and returned to the outside via an air
duct system.
Heat pump for outdoor installation
■ All of the heat pump components, except for the heat
pump control unit, are housed in a casing that is
installed outside the building. The heat pump control
unit is mounted inside the building. The heat pump is
hydraulically connected to the heating system of the
building.
Air/water heat pumps with separate indoor/outdoor
units
The outdoor unit is installed outside the building or fit-
ted to the outside of the building. Heat is obtained from
the ambient air in the outdoor unit.
The heat pump control unit may be installed in different
locations depending on the type of heat pump: see
page 15.
■ At the front of the heat pump
At the top of the heat pump
■
In a separate enclosure on the wall
■
The indoor unit, including the heat pump control unit, is
installed inside the building and transfers the heat to
the heating system.
The indoor and outdoor units are connected to each
other hydraulically and electrically.
Brine/water heat pumps
Brine/water heat pumps utilise geothermal energy to
generate heat. The geothermal energy is transferred to
the refrigerant circuit using a heat transfer medium
(brine). Here, the temperatures necessary for central
heating and DHW heating are generated. Here too, a
compressor drives the refrigerant circuit.
To provide central cooling, the heat pump extracts heat
from your rooms and transfers it to the ground.
Brine/water heat pumps are installed inside the build-
ing.
Note
Brine/water heat pumps can have two stages. Two-
stage brine/water heat pumps have 2 compressors
which can be activated individually or simultaneously
subject to the requested heating output.
Depending on heat pump type, the two compressors
can be installed in a single casing or in 2 adjacent cas-
ing units. Both compressors are controlled by one heat
pump control unit.
Water/water heat pumps
Water/water heat pumps utilise e.g. groundwater to
generate heat, following the same principle as brine/
water heat pumps. The energy from the groundwater
reaches the refrigerant circuit via a heat transfer
medium.
With auxiliary components, a brine/water heat pump
can be used as a water/water heat pump.
Water/water heat pumps are installed inside the build-
ing.

Introductory information

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