GMV5 Home DC Inverter Multi VRF Units
149
Notices:
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Separate piping of hydro box and piping of IDU from the position of branch pipe A.
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Under normal condition, the pipe length from IDU branch pipe B to farthest IDU is 40m.
When the following conditions are satisfied, the pipe length can reach 90m:
a. Actual length of total piping: L1+L2×2+ L3×2+ L4×2+…+ L8×2+a+b+…+i+j+k+m+n≤300m;
b. Distance from each IDU to its nearest branch pipe: a, b, c, d, e, f, g, h≤40m;
c. Length difference between the indoor branch B to the farthest IDU and nearest IDU:
L9-L10≤40m;
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If the distance between IDU to its nearest branch pipe is above 10m, the diameter of IDU
liquid pipe whose diameter is smaller than or equal to 6.35mm should be bigger.
9.4 Size of Refrigerant Piping
(1) The size of ping between ODU and branch pipe (main pipe) is confirmed by ODU
capacity.
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Note: The requirements for high pressure gas pipe size please refer to the content in ―Piping
size between branch pipes
(2) Slection of branch pipe
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