Installation manual

21
4 Heat Pump Controller / Commissioning
4.1 Set To Work
When starting up the heat pump you must first ensure that;
• All covers are replaced.
• The heat pump isolator switch is switched on.
• The heat pump is connected to the mains power supply via a separate suitable circuit breaker and RCD
protection.
• The wiring centre or DHW cylinder is connected to the mains power supply.
• The Modbus network is complete and the UI and the heat pump are connected to the wiring centre or DHW
cylinder.
Once the connections have been made and the power supplies have been switched on, the system may take a couple
of minutes to start up.
When switching on the heat pump for the first
time, and after the start up sequence, you will
be greeted by the home screen, shown in figure
13.
If the heat pump is already switched on but you
wish to make changes to the settings, you may
need to press Esc in order to go from the
screensaver to the home screen.
To access the Installer Menu, you must select
the information menu. Once you have entered
the information menu, you must select ‘Login’,
as shown in figure 14.
4.1.1 S TARTING THE HEAT PUMP IN COLD WEATHER
When carrying out a commissioning and setting a heat pump to work in conditions where defrosting is required (≤12°C)
and/or the space heating return temperature is ≤18°C, start by heating the buffer tank. There is not currently a software
function to close down the heating circuits, so to do this the rest of the heating circuit must be closed down manually to
allow the buffer tank to heat up (≥25°C).
Once this temperature has been achieved, individual heating circuits (i.e. zones) can be opened gradually. During this
procedure, DO NOT:
• Allow excess volumes of cold water to return from the heating circuit
• Allow the heat pump return temperature to drop below 18°C
Figure 12: Using the User Interface