53
9.2.3 Checking the heating circuit
NOTES
► Check the pressure (1.5 to 2 bar)
► Check the inhibitor levels within the heating
system
► Check the water-side connections to ensure
they are leak-tight.
► Check if the system has been correctly
vented.
► Check the system filter for debris and clean if
required.
► Check all system valves, including the boiler
isolation valves, radiator lockshield & TRV's
etc. are open.
8. Check the system for any leaks, rectify where required.
9. Top-up the system pressure when required due to venting.
10. Close o both filling valves aer check the correct pressure has
been established.
11. Power up the indoor unit and boiler.
12. Switch the isolator for the outdoor unit to on.
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