Gree GMV-WQ120WM/A-F, Руководство пользователя

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Water-cooled Heat Recovery DC Inverter VRF
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4.5.3 Connection of power cord
(1) Before connecting terminals, all supply circuits should be power off.
(2) Making reliably earth for type I electrical appliances.
(3) Earth resistance should follow requirements of local standards.
(4) The green-yellow wire within units is earth wire. Do not use it for other purposes. Do not cut it off or secured
by tapping screws neither. Otherwise, it may cause electric shock.
(5) Power supply on user side should be reliable earth terminal. Do not connect earth wire to the following
places:
1) Water pipe.
2) Gas pipe.
3) Drainage pipe.
4) Other places which are considered by professionals as unreliable.
(6) Power cord and communication wire should be separated, with a distance of more than 20cm (7-7/8in.).
Otherwise, system’s communication will be abnormal.
Fig.4.5.2