1) Amount of additional refrigerant depending on the pipe size(X)
Total length of each liquid pipe: Φ9.52：A+B+C+D+a+b+c+d=10+5+4+5+3+3+2+1=33m
2) Amount of additional refrigerant depending on Quantity of IDU(Y)
Quantity of indoor unit: 4 sets
3) Amount of additional refrigerant depending on certain model of IDU(Z)
IDU includes GMV-NDR40PH/B1-T
Therefore, the total charging amount＝ (33×0.054)+(4-2)×0.3+0.5x4＝4.382kg
4.5 Electric Wiring
4.5.1 Notices for Wiring
(1) Install units according to national wiring codes.
(2) Use air conditioner specialized power supply and make sure that it is consistent with
system’s rated voltage.
(3) Do not pull the power cord with force.
(4) All electrical installation must be performed by qualified technicians in accordance with
local laws, regulations and this user manual.
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