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Refrigerant piping & refrigerant charge
11.3.3 Piping system (Line branch installation)
RASC unit
Allowed quantity of indoor units
Maximum refrigerant piping length (Line branch installation)
Maximum piping length between the
RASC unit and the farthest indoor unit
Maximum total piping length (L1+ L3
Maximum piping length from the 1st multikit to the furthest indoor unit (L2)
Maximum piping length between multikit and indoor unit (L3
Maximum height difference between
RASC unit and indoor unit (Hi-o)
Maximum height difference between indoor units (Hi)
Maximum height difference between multikits and between multikit and indoor unit
It is recommended to install all indoor units at the same height. Nevertheless, when the height difference between the indoor units
N O T E
24
PMML0319A rev.1 - 06/2015
4 HP
Item
Actual piping length (L1)
Equivalent piping length (EL)
+ L3
+ ... + L3
)
1
2
n-1
, L3
1
2
RASC unit higher than indoor unit
Indoor unit higher than RASC unit
5 HP
6 HP
2 - 5 (*)
4HP
, L3
, ..., L3
)
3
n
8 HP
10 HP
2 - 6 (*)
5HP
6HP
8HP
75
100
95
125
95
100
30
40
10
15
30
20
10
3
(m)
10HP
145
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Troubleshooting
