Midea V6-i Series Manual page 84

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Figure 3-3.2: Permitted refrigerant piping lengths and level differences
Table 3-3.2: Summary of permitted refrigerant piping lengths and level differences
Total piping length
Piping between farthest indoor unit
and outdoor unit
Piping between farthest indoor unit and first indoor branch joint
Pipe Length between the nearest branch and the indoor unit
Largest level difference between
indoor unit and outdoor unit
Largest level difference between indoor units
Notes:
1. Refer to Requirement 1, above.
2. Refer to Requirement 2, above.
3. Refer to Requirement 3, above.
4. Refer to Requirement 5, above.
5. Refer to Requirement 6, above.
When the outdoor unit connects to one indoor unit, the piping length and level difference requirements that apply are
summarized in Table 3-3.3.
Table 3-3.3: Summary of permitted refrigerant piping lengths and level differences connects to one indoor unit
The max height drop(m)
Outdoor unit is above
25
Outdoor unit
Piping between farthest indoor unit and
outdoor unit
L
L
2
1
A
L
The first line Branch Pipe
Legend
L1 Main pipe
L2 to L5 Indoor main pipes
a to f Indoor auxiliary pipes
A to E Indoor branch joints
1
Actual length
Equivalent length
Outdoor unit is above
4
Outdoor unit is below
Outdoor unit is below
20
Indoor auxiliary pipe
B
Piping between farthest indoor unit and
first indoor branch join
3
L
4
D
C
L
5
E
Permitted values
≤ 150m
≤ 100m
≤ 110m
3
5
The length of refrigerant pipe(m)
50
V6-i VRF 50Hz
N
1
a
N
2
b
c
N
3
N
4
d
f
e
N
5
N
6
Indoor unit
Piping in Figure 3-3.2
L1+L2+L3+L4+L5+a+b+c+d+e+f
L1+L3+L5+f
≤ 40m
≤15m
≤ 50m
≤ 40m
≤15m
The number of bends
≤ 10
L3+L5+f
a,b,c,d,e,f
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