DC Inverter Side Discharge VRF Ⅱ for North America
80
7.1.6 Support and Protection of Pipeline
(1) Support should be made for hanging connection pipe. Distance between each support cannot be
over 1m(3-1/4feet).
(2) Protection against accidental damage should be made for outdoor pipeline. When pipeline exceeds
1m(3-1/4feet), a pinch board should be added for protection.
6.2 Disassembly of Compressor Feet
In order to prevent unit from damage during transportation, 2 metal pieces are fitted
to outdoor unit’s compressor feet before unit leaves factory. See fig.21.
Fig. 21
When installing the unit, metal pieces for transportation must be removed（except for
GMV-60WL/A-T(U)）. Then fasten the binding nuts again and wrap back soundproofing
cotton.If unit runs with metal pieces fitting on, compressor will shake abnormally and unit’s
operating life will be shortened.
6.3 Vacuum Pumping, Refrigerant Adding
Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra
refrigerant in the outdoor unit for air purging!
6.3.1 Vacuum Pumping
(1) Outdoor unit has been charged with refrigerant before delivery. Field-installed
connection pipe needs to be charged with additional refrigerant.
(2) Confirm whether outdoor liquid and gas valves are closed.
(3) Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the
outdoor valve, as shown below.
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