Amazon HXINUV, Installation Instructions A1, 28th June 2019
Wiring
Refer to the wiring diagram above: The two buffering cylinder thermostats, relay and plate heat exchanger pump are pre-wired.
Additional boiler and heating controls can then be wired to the fitted wiring centre as shown to achieve the required installation. It is
suggested that the permanent Live, Neutral & Earth for the boiler (and space heating controls if fitted) are all taken from the wiring
centre in order to balance with the switched live outputs to both the boiler when called, and zone control for space heating, and provide
a single point of isolation for the DHW and CH plan; however the installer may choose to derive their own solution, in which case it is
imperative that suitable labelling is provided to indicate which circuits/components may remain live if the cylinder supply is isolated.
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