Piping Model Selection - BGH GMV6 Technical Sales Manual

8

PIPING MODEL SELECTION

8.1 Allowable length and fall of IDU and ODU refrigerant piping
The connection method of IDU and ODU adopts Y-shape branch for connection, the connection, the
connection method is as follow:
L10: the distance between the first branch and the furthest IDU;
L11: the distance between the first branch and the nearest IDU;
The equivalent length of outdoor branch is 0.5m and the equivalent distance of indoor branch is 0.5m.
Total actual connection pipe length
The length between ODU and the
furthest IDU
The max. fall of IDU and ODU H**
The max. fall of IDUs h
120
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Actual length
Equivalent length
IDU*
ODU on the top
ODU at the bottom
Length (m)
≤1,000 L1+L2+L3+L4+...+L9+a+b+...+i+j
≤200 L1+L6+L7+L8+L9+j
≤240
≤120 L6+L7+L8+L9+j
≤100
≤110
≤40
Remark
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