DC Inverter Multi VRF System User Manual 
 
15 
 
 
Fig.18 
  4) Thermal insulating material of branches should be the same as that of the pipeline. The 
attached foam of branches cannot be taken as insulating material. 
  5) When wrapping the tape, the later circle should cover half of the former one. Don’t wrap the 
rape too tight, otherwise the insulation effect will be weakened. 
  6) After wrapping the pipe, apply sealing material to completely seal the hole on the wall. 
4.3.8 Support and Protection of Pipeline 
(1)  Support  should  be  made  for  hanging  connection  pipe.  Distance  between  each  support 
cannot be over 1m. 
(2) Protection against accidental damage should be made for outdoor pipeline. When pipeline 
exceeds 1m, a pinch board should be added for protection. 
4.4 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.19. 
 
Fig.19 
When installing the unit, metal pieces for transportation must be removed. Then fasten the 
binding nuts again and wrap back soundproofing cotton. 
  Note: If unit runs with metal pieces fitting on, compressor will shake abnormally and 
unit’s operating life will be shortened.