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Heating & Hot Water, Pre-Plumbed Installation
Electrically testing the unit
The unit has a function to test all the wiring without any tools, this is really useful to check everything has been set up correctly. Test
each component one at a time to check its ok.
Operation
Button
Display
Enter test mode – hold the left and right buttons together for 4
seconds
Run the water circulation pump (Terminal B8 live) – Press the red
Heating on/off button leave this running
You should check flow rates here see below
Run the immersion heater (Terminal A3&A4) – press the Mode
button (Heating)
Open Valve HW for hot water (Terminal B17 live) – press the
Outing Button
Heating valve 1 is normally open (B10 live), to close valve for
heating Zone 1 – press the Set button
Turn up your room thermostats, when they come on heat will
show. This shows a run signal is received at the unit, turn stats
Operate Zone 1 thermostat
down again test will reappear
Checking flow rate
First you need to clean the filter balls.
Shut the valve, undo the back of the valve, remove the strainer, clean it and replace it then open the
valve.
Press right and left button together for 6 seconds. The controller will display TEST or 7E57 or HEAT,
press the power on/off button to start the pump. When the pump is running you can see a picture
of a house with a circle around it.
The unit will be running in heating mode. Check the flow rate, we need 12l/min on the 5kW unit, 20l/
min of flow on the 9kW unit and 30l/min on the 16kW unit. If there is not enough flow the unit will
never operate and it will give fault E911 see fault code page.
If you look into the flow meter you can see the flow in litres per minute. The flow rate is the low
figure, in this picture you can see a flow rate indicated, this shows 0l/min NOT 16l/min. Make sure
you clean the filter ball, turn up all the pumps, open all the valves and get rid of the air to keep flow
rate up.
Testing the flow in Hot water mode
Clean the filter ball again, press oval set button, 2-1 appears on screen, the heating valve will close.
Manually open the HW valve with the toggle and leave it open. Now measure the flow rate through
the cylinder. As above.
Exit test mode – press the ESC button to get back to normal display
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Installation Manual.indd 18
31/08/2018 19:01:27
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