Electric Installation; Precautions On Safety - Gree GRS-2.4/D270ANbA-K Manuel D'installation

Air Source Heat Pump Water Heater

4 Electric Installation

4.1 Precautions on Safety

(1) This air source water heater is class Ⅰ appliance. Ensure that wire layout is
performed by professional personnel according to national wiring rules.
(2) Ensure that a switch for all-pole disconnection is available for the fixed lines
and is directly connected to wiring terminals of the power supply. Ensure that
contactor opening distance on all poles meets the disconnection
requirements under overvoltage category III conditions.
(3) Ensure that reliable earthing are taken. A dedicated grounding apparatus
should be used.
(4) Use the power supply with specifications provided in the nameplate, and use
circuits dedicated for air conditioners.
(5) Copper-conductor cables must be adopted for power cables, and the
operating temperature should not greater than the stipulated value. The
diameter of the cables should be large enough. For details, refer to Table 9-1.
If the length of the power cable is greater than 15 meters, choose a power
cable with a larger cross-sectional area to prevent problems caused
overloading. Do not pull the power cable during the installation.
(6) Use independent fixed socket for the supply. The structure of the socket must
match the power plug of the water heater and be in line with relevant national
standards. The socket should be placed in the safe position that is out of the
reach of water and does not cause electric shock hazards. It must not be
placed in the bathroom, kitchen, balcony, and other wet places.
(7) Do not use the socket converter, extension cords, or wiring boards to adapt to
the size of the plug of the water heater, and do not use another plug to for the
socket. The water heater should use independent wires, and do not share a
line with other appliances.
(8) If the installation conditions on site change, consider using cables whose
reduced capacity can still meet site requirements, based on the specifications
of the power cables and air circuit breakers provided by the vendor.
(9) If the power flexible wire is damaged, it must be replaced by professional
personnel of the vendor, maintenance center of the vendor, or relevant other
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