Display Of Consumption Values In Relation To The Funding Guidelines For Federal Funding For Efficient Buildings - Individual Measures (Beg Em); Technical Terms - Bosch Compress 3400iAWS E Operation Manual

Display of consumption values in relation to the funding guidelines for federal funding for efficient buildings - individual meas-
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7 Display of consumption values in relation to the
funding guidelines for federal funding for
efficient buildings - individual measures (BEG
EM)
The displayed energy consumption, heat quantities and device
efficiency (hereinafter "consumption values") are calculated from
device-specific data and measured values. The consumption values
displayed are only an estimate (interpolation).
In real operation, many different factors influence energy consumption.
The specific consumption values are among others influenced by:
• Installation / execution of the heating system,
• user behaviour,
• seasonal environmental conditions,
• components used.
The consumption values displayed relate exclusively to the heating
appliance. Consumption values of other components of the entire
heating system (complete heating system with all its associated
components), such as i.e. external heating circulation pumps or valves
are not taken into account. The deviations between the displayed and the
actual consumption values can therefore be considerable in real
operation.
The representation of the consumption values enables the operator to
make a relative comparison of the energy consumption over time. In
addition, excess or reduced consumption can also be determined. A use
for binding billing purposes is not possible.
8

Technical terms

CS3400iAWS outdoor unit
The central heat source. Installed in the open air. Alternative
designation: outdoor unit. Contains the entire refrigerant circuit except
for the condenser. Gaseous refrigerant is routed to the indoor unit from
the CS3400iAWS outdoor unit.
Indoor unit
Installed in the building and distributes the heat from the heat pump to
the heating system and DHW cylinder. Contains the control unit and
primary pump to the heating system. The refrigerant is condensed in the
condenser and fed back to the CS3400iAWS outdoor unit.
Heating installation
Designation for the entire installation, comprising the heat pump, heat
pump module, DHW cylinder, heating system and accessories.
Heating system
Comprises the heat source, container, radiators, underfloor heating
system or fan convectors or a combination of these elements if the
heating system is made up of several heating circuits.
Heat. circ.
The part of the heating system that distributes the heat throughout the
various rooms. Consists of pipework, pump and radiators, heating hoses
of the underfloor heating system or fan convectors. Only one of the
specified alternatives is possible within a circuit. However, if for example
the heating system is equipped with two circuits, radiators can be
installed in one and an underfloor heating system installed in the other.
Heating circuits can be configured with and without mixers.
22
Heating water/domestic hot water
If domestic hot water is connected to the system, a distinction is made
between heating water and domestic hot water. The heating water is
channeled to the radiators and the underfloor heating system. Shower
and water taps are supplied with domestic hot water.
If a DHW cylinder is present in the system, the control unit switches
between heating and DHW mode so that maximum comfort is achieved.
The DHW or heating mode can be prioritised by selecting an option on
the control unit.
Heating circuit without mixer
In a heating circuit without mixer the temperature in the circuit is
controlled purely by the energy from the heat source.
Heating circuit with mixer
In a heating circuit with mixer, the mixer mixes return water from the
circuit with water from the heat pump. This allows heating circuits with
mixer to be operated at a lower temperature than the other heating
system, e.g. so that underfloor heating systems that operate at lower
temperatures can be separated from radiators that require higher
temperatures.
Mixer
The mixer is a valve that steadily mixes colder return water with hot water
from the heat source in order to achieve a specific temperature. The
mixer can be situated in a heating circuit or in the heat pump module for
the external auxiliary heater.
3-way valve
The 3-way valve distributes thermal energy to the heating circuits or the
DHW cylinder. It has two defined settings so that heating and DHW
heating cannot occur at the same time. This is also the most effective
operating mode, as the DHW is always heated to a specific temperature,
while the heating water temperature is continuously adjusted to the
outdoor air temperature in each case.
Heat transfer medium circuit
The part of the heating system that transports the heat from the outdoor
unit to the indoor unit.
Cooling circuit
The main part of the outdoor unit that obtains energy from the outdoor
air and transfers this as heat to the heat transfer medium circuit.
Consists of evaporator, compressor, condenser and expansion valve.
The refrigerant circulates in the cooling circuit.
Evaporator
Heat exchanger between air and refrigerant. The energy from the air that
is drawn in through the evaporator causes the refrigerant to boil and turn
to gas as a result.
Compressor
Moves the refrigerant through the cooling circuit from the evaporator to
the condenser. Increases the pressure of the gaseous refrigerant. The
temperature also increases as the pressure increases.
Condenser
Heat exchanger between refrigerant in the cooling circuit and water in
the heat transfer medium circuit. During the heat transfer, the
temperature of the refrigerant falls as it changes into the liquid
aggregation state.
Expansion valve
Reduces the pressure of the refrigerant after it is discharged from the
condenser. The refrigerant is then channeled back to the evaporator
where the process starts again.
Inverter
Located in the outdoor unit and enables the speed of the compressor to
be controlled based on the heat energy demand in each case.
Compress 3400iAWS E – 6721852787 (2023/01)