Product Information
Compress Hybrid 7000i AW – 6721833054 (2020/09)
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2Product Information
2.1 Declaration of conformity
The design and operating characteristics of this product comply with the
European and national requirements.
The CE marking declares that the product complies with all the
applicable EU legislation, which is stipulated by attaching this
marking.
The complete text of the Declaration of Conformity is available on the
Internet: worcester-bosch.co.uk.
The Compress Hybrid 7000i AW heat pump belongs to a series of heat
pumps that recover energy from the outdoor air for heating and domestic
hot water heating.
By reversing this process and removing heat from the heating water and
releasing it to the outdoor air, the heat pump can also be used for cooling
if necessary. To do this however, the heating system must be configured
for cooling mode.
In order to obtain a complete heating system, the outdoor unit which is
set up outdoors must be connected to an indoor unit in the building.
The heating system is controlled by the control unit HPC400 which is
located in the indoor unit. The control unit controls the system using a
range of different settings for the heating, cooling, domestic hot water
and other operations. The monitoring function switches the heat pump
off in the event that faults occur, for example, as this prevents the main
components from being damaged.
2.2 Control unit
The HPC400 control unit in the indoor unit controls the heat production
based on the outdoor sensor values, possibly in combination with the
room temperature-dependent controller CR10H (accessory). The
temperature in the building is adapted automatically, based on the
outside temperature.
The user specifies the temperature of the heating system by setting the
required room temperature on the control unit or room temperature-
dependent controller.
Various accessories (e.g. swimming pool, solar and room temperature-
dependent controller) can be connected to the indoor unit via the EMS
plus bus. Additional functions and setting options therefore become
available and can also be controlled via the control unit. For more
information on accessories, refer to the relevant instructions.
2.3 Heat pump details
Following the installation and commissioning of the heat pump and
indoor unit, specific tasks must be performed at regular intervals.
These include checking whether alarms have been triggered and simple
maintenance work. These actions can normally be performed by the user
unassisted. However, if problems persist it may be necessary to contact
the system installer.
2.4 Heating installation
The heating system consists of two parts: the heat pump outdoor unit in
the open air and the indoor unit.
A gas condensing appliance can also be connected as a secondary
source of heat.
The heat pump switches off at an outside temperature of approx.
– 20 °C. An external heat source then takes over the heating.
2.5 Heat pump (outdoor unit)
The heat pump has the task of recovering energy from the outdoor air
and transferring it to the indoor unit.
The heat pump is equipped with an inverter control, i.e. it varies the
speed of the compressor automatically so that precisely the required
amount of energy is supplied in each instance. The speed of the fan can
also be controlled and it regulates its speed according to the
requirements. This keeps the energy consumption as low as possible.
Defrosting
Ice can form on the evaporator at low outside temperatures. If the layer
of ice becomes so thick that it impedes the flow of air through the
evaporator, an automatic de-icing process is initiated. As soon as all the
ice has melted, the heat pump reverts to normal mode.
At low outside temperatures, defrosting is achieved by reversing the flow
direction of the refrigerant in a circuit via a 4-way valve; this type of
defrosting is referred to as 'reverse circulation'.
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