Electric Wiring Work - Gree GRS-CQ16Pd/NaB-K Owner's Manual

Air-to-water Heat Pump
Circulating water inlet/outlet of main unit
Cooling water inlet of water tank
Circulating water inlet/outlet of water tank
Hot water outlet of water tank
Note:
① Distance between indoor unit and water tank should not exceed 5m levelly and 3m vertically. If
higher, please contact with us. Water tank on lower and main unit on higher side is recommended.
② Prepare the materials according to the above joints dimension. If cut-off valve is installed
outside the room, PPR pipe is recommended to avoid freeze damage.
③ Waterway pipelines can't be installed until water heater unit is fixed. Do not let dust and other
sundries enter into pipeline system during installation of connection pipes.
④ After connection of all waterway pipelines, perform leakage test firstly. After that, perform heat
preservation of waterway system; meanwhile, pay more attention to valves and pipe joints. Ensure
enough thickness of insulated cotton. If necessary, install heating device for pipeline to prevent the
pipeline from freezing.
⑤ Hot water supplied from insulated water tank depends on pressure of water tap, so there must
be supply of tap water.
⑥ During using, the cut-off valve of cooling water inlet of water tank should be kept normally on.

18.4 Electric wiring work

18.4.1 Wiring principle
General principles
Wires, equipment and connectors supplied for use on the site must be in compliance with
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provisions of regulations and engineering requirements.
Only electricians holding qualification are allowed to perform wire connection on the site.
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Before connection work is started, the power supply must be shut off.
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Installer shall be responsible for any damage due to incorrect connection of the external circuit
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of the unit.
Caution --- MUST use copper wires.
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Connection of power cable to the electric cabinet of the unit
Power cables should be laid out through cabling trough, conduit tube or cable channel.
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Power cables to be connected into the electric cabinet must be protected with rubber or plastic
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to prevent scratch by edge of metal plate.
Power cables close to the electric cabinet of the unit must be fixed reliably to make the power
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terminal in the cabinet free from an external force.
Power cable must be grounded reliably.
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Description Joint pipe thread
1"Male BSP
1/2"Female BSP
3/4"Female BSP
1/2"Female BSP
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