Refrigerant piping & refrigerant charge
19
PMML0317A rev.1 - 11/2013
ENGLISH
ES series
(m)
Outdoor Unit 4HP
Maximum piping Length between the
outdoor unit and the indoor unit
Actual Length (L) 50
Equivalent Length (EL) 70
Maximum height difference Outdoor / Indoor (H)
(Outdoor Unit is Higher / Lower)
30 /20
Maximum height difference Indoor / Indoor 0.5
Maximum total piping length Twin (A + B + C) 60
Maximum piping line after branch Twin (B, C) 10
(B-C) < 8
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.
Example for line branch (Only allowed for IVX series)
OU 3 HP 4 HP 5 HP 6 HP 8 HP 10 HP
IU
quantity
allowed
IVX Premium 2 -3 2 - 5 2 - 6 2 - 8
IVX Standard -- - - - 2 - 4
(picture is as example)
Connections including Indoor Units 8 and 10 HP are not possible
Maximum refrigerant piping length (Line branch system)
IVX Premium series
(m)
Outdoor Unit 3HP 4HP 5HP 6HP 8HP 10HP
Maximum piping length between
the outdoor unit and the farthest
indoor unit
Actual Length (L1) 50 75 100
Equivalent Length (EL) 70 95 125
Maximum piping length from rst branch to each indoor unit (L2) 20 30 40
Maximum piping length from branch to indoor unit (L3) 10 15
Maximum piping length L4 + (L3
1
+L3
2
+L3
3
....) 60 95 100 145
Maximum height difference
Outdoor / Indoor (H)
(Outdoor Unit is Higher / Lower.)
30 / 20
Maximum height Difference Indoor / Indoor 10
Maximum height difference:
Branch pipe/Indoor
Branch pipe/branch pipe
3
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