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Refrigerant piping & refrigerant charge
Maximum refrigerant piping length

IVX Premium series
Maximum piping Length be-
Outdoor / Indoor (H)
Maximum height difference Indoor / Indoor
Maximum height difference:
branch pipe/Indoor (2, 3 and 4 units system)
IVX Standard series
Outdoor Unit
Maximum piping Length
unit
Total piping length
Maximum piping line
after first branch
Main piping length A
Maximum height difference
(Outdoor Unit is Higher / Lower.)
Maximum height difference:
branch pipe/Indoor (2, 3 and 4 units system)
branch pipe/branch pipe (4 units system)
(B-C) / (B-D) / (C-D) / (C+G)-(B+E) / (C+G)-(B+D)
(C+F)-(B+E) / (C+F)-(B+D)
N O T E
The liquid piping and the gas piping must be of the same piping length and run along the same route.
Install the branch piping as much as possible near the indoor units
Install Multikits at the same horizontal level.
27
_PMML0251A_r2.indb 27
Actual Length (L)
Equivalent Length (EL)
2 units (A+B+C)
3 units (A+B+C+D)
(A+B+C+D+E+F+G+)
4 units
(B+D, B+E, C+F, C+G)
Actual Length (L)
Equivalent Length (EL)
2 units (A+B+C)
3 units (A+B+C+D)
2 and 3 units (B, C, D)
4 units
(B+D, B+E, C+F, C+G)
PMML0251A rev.2 - 02/2013
3HP
4HP
5HP
6HP
50
75
70
95
60
85
--
95
--
95
10
--
10
30 / 20
10
3
< 8
4HP
5HP
6HP
70
75
90
95
80
85
90
95
90
95
10
10
A > B, C, D, E, F, G
30 / 20
3
3
< 8
(m)
8HP
10HP
100
125
100
115
100
130
100
145
15
15
(m)
8HP
10HP
100
125
100
115
100
130
100
145
15
15
06/02/2013 9:05:04
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