Gree GRS-CQ12Pd/NhG-K, Owner'S Manual

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Air-to-water Heat Pump
35
MONOBLOC TYPE
please contact with us. Water tank on lower and main unit on higher side is recommended.
(b) 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.
(c)
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.
(d)
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.
(e) Hot water supplied from insulated water tank depends on pressure of water tap, so there must be supply of
tap water.
(f) During using, the cut-off valve of cooling water inlet of water tank should be kept normally on.
16.4 Requirements on water quality
Paramete Parametric value Unit
pH( 25°C) 6.8~8.0
Cloudy
＜
1 NTU
Chloride
＜
50 mg/L
Fluoride
＜
1 mg/L
Iron
＜
0.3 mg/L
Sulphate
＜
50 mg/L
SiO
2
＜
30 mg/L
Hardness(count CaCO
3
)
＜
70 mg/L
Nitrate(count N)
＜
10 mg/L
Conductance(25°C)
＜
300 μs/cm
Ammonia (count N)
＜
0.5 mg/L
Alkalinity(count CaCO
3
)
＜
50 mg/L
Sulfid Cannot be detected mg/L
Oxygen consumption
＜
3 mg/L
Natrium
＜
150 mg/L
16.5 Electric wiring work
16.5.1 Wiring principle
General principles
(1) Wires, equipment and connectors supplied for use on the site must be in compliance with provisions of
regulations and engineering requirements.
(2) Only electricians holding qualification are allowed to perform wire connection on the site.
(3) Before connection work is started, the power supply must be shut off.
(4) Installer shall be responsible for any damage due to incorrect connection of the external circuit.
(5) Caution --- MUST use copper wires.
(6) Connection of power cable to the electric cabinet of the unit
(7) Power cables should be laid out through cabling trough, conduit tube or cable channel.
(8) Power cables to be connected into the electric cabinet must be protected with rubber or plastic to prevent
scratch by edge of metal plate.
(9) Power cables close to the electric cabinet of the unit must be fixed reliably to make the power terminal in
the cabinet free from an external force.
(10) Power cable must be grounded reliably.