Gree GMV-VQ680WM/C-X Service Manual page 23

Gree
Category No.
49
Check the
50
installation
situation of
water circuit of
51
hydro box.
52
3.2 Debugging and Operation
3.2.1 Commissioning inspection for hydro box circulating water system
3.2.1.1 Precautions
(1) Check if the unit is installed correctly.
(2) Check if water system pipes and electric system wires are reasonable.
(3) Check if the earthed wires are connected.
(4) Check if the supply voltage complies with the rated voltage of unit.
(5) Check if the check valve and relief valve at the water inlet are installed correctly.
(6) The pressure of inlet water shall be not less than 0.15MPa.
(7) Please add anti-freeze fluid according to instruction manual of hydro box.
(8) Before conducting commissioning inspection for hydro box circulating water system, the
outdoor unit, mode exchange box and hydro box must be energized simultaneously.
3.2.1.2 Test Run
3.2.1.2.1 Leakage Detection
After connecting all waterway pipeline, please arrange leakage detection firstly and then arrange
insulation to waterway system after making sure there is no water leakage. Please pay special attention
to the thermal insulation at the joints of valves and pipe joints. The insulation cotton with thickness not
less than 15mm is recommended.
3.2.1.2.2 Filling Water for Exhausting Air between Hydro Box with Water Tank and Floor
Heating Pipe
(1) Ensure that each water pipe is correctly connected, the exhaust valve on the user side is closed
and the sewage port is sealed;
(2) Open the water filling valve to fill water. Open the exhaust valve;
(3) When there is water flown out from the exhaust valve, please open the manual exhaust valve;
(4) When it is completely water flowing out of the vent valve, energize the hydro box and enter
cleaning mode to start exhausting. The operation method is that when the hydro box is off,
pressing "Menu/OK" button to enter menu interface. Press "Left" or "Right" to find "Function"
option, then press "Menu/OK" button to enter "Function Setting". Select "Clean" and pressing
"Menu/OK" button to start cleaning.
Checklist Before GMV6 HR Commissioning
Item
If the circulating water circuit has
been installed with C/D valve
(electric ball valve) as required?
If the circulating water pump is
installed according to correct model
selection.
If the expansion drum is installed as
required.
If the safety valve, filter, water
circuit fittings of exhaust valve are
installed as required.
GMV6 HR DC Inverter VRF Units Service Manual
Reference Value
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21
Qualified Inspector