5.4 Coefficient of performance
Heat pump efficiency ratios are measured by the coefficient of performance (COP) and
cooling coefficient of performance (COPc) values.
COP indicates the amount of heat energy produced by the heat pump divided by the
energy consumed by the heat pump.
COP depends largely on heat source and heating network temperatures. The higher
the heat source temperature and the lower the supply water temperature, the better the
efficiency ratio.
5.5 Control system
The heat pump is equipped with an automatic control system. The system manages
the heat pump’s operation, allowing the heat pump to generate both heating and
cooling either separately or concurrently.
The control system includes a built-in automation system, sensors attached to it, and a
control panel. The control panel is used for monitoring and changing system settings as
well as browsing and resetting error notifications.
The automation system supports the most common field bus protocols. The control
system has the following features:
● Clear, easy-to-use graphical user interface and reliable, programmable industrial
controller with support for controlling multiple units.
● Modbus and Profibus protocols available
● Remote monitoring and programming
Control system user interface
The user interface has a number of different views for operating the system and
changing its settings. The views can be browsed through the touch screen panel.
As a normal user, you can access most features (such as changing setpoint values,
starting and stopping the heat pump, acknowledging alarms, and viewing trends)
without logging in. Certain screens, usually popup windows, will require logging in as
an
Expert
. In such cases, the login screen will appear automatically.
In the following sections, the different views and functions are described in more detail.
5.6 Control panel
Home view
The
Home
view is the main view of the heat pump user interface. It enables you to
have an overview of the heat pump, and to turn it on or off. The limit and the setpoint
value can be edited directly by tapping on the respective value.
To open the
Process
view, tap on the process view button (Pos. 5 in the figure below).
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