Installation manual

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4.2.3 E LECTRICAL C ONNECTIONS (SH)
This menu provides a list of electrical connections that should be made prior to commissioning for space heating. The
list is based on the schematic zone diagram selected and also the type of temperature devices that will be used in each
zone. Once you have confirmed all checks and select ‘Next’, you will return to the commissioning menu where you can
now access the ‘Water flow check’ menu.
4.2.4 W ATER FLOW CHECK
Select ‘Run Test’ to start the circulation pump. Ensure that all valves are open to allow flow. The circulation pump will
be tested first by running for 30 seconds. When the timer reaches zero, the pump will continue to run until flow is
confirmed, which allows time for the installer to check that the pump is working.
Once you are confident that the pump is on and that there is water flow, click ‘Continue’ to confirm that the pump is
working correctly. Do not confirm that the pump is working in this menu unless you have physically checked it,
as the UI requires your input and does not detect this automatically.
Once this is successful, the compressor will run for 5 minutes. As the test runs, the screen will give you information on
the status of the heat pump and the time remaining on the test. If you do not have flow or if there is a problem, you can
stop the test. If you stop the test, there is a 5 minute delay before you can attempt to run the test again. It is not possible
to bypass the test, as good water flow is critical to the operation of the heat pump.
If there is no flow at all, a high pressure fault will appear on the UI screen and the commissioning will be aborted. Once
the test is completed, you will see one of three messages:
1. No flow detected
2. Flow too low
3. Flow detected
If you see message 1 or 2, this might be an indication of an air-lock, dirty strainer, flow restriction or pump too small for
the required pipework. Please check for these issues and if present, rectify to ensure that there is sufficient flow then
repeat the test. There will be a time delay before you can restart the test. When you see the screen shown in figure 21,
with the pump highlighted in green, flow has been detected and the compressor ‘flow check’ test is complete. You will
receive the status ‘Waterside is OK’ when the waterside checks are completed. Selecting ‘Next’ brings you to the
Electrical Connections menu.
Figure 20: Electrical Connection Figure 19: Temperature Check