Hitachi RAS-(4-12)HNP(1)(E) - Page 92

3 Piping work and
refrigerant charge
78
SMGB0087 rev.0 - 12/2013
3indoorunitssystem
(mm)
OutdoorUnitHP
PipeSize(A)
Headerbranch
Gas Liquid
4 / 5 / 6 Ø15.88 Ø9.52 TRE-46N1
8 Ø25.40 Ø9.52 TRE-812N1
10 /12 Ø25.40 Ø12.70 TRE-812N1
(1) In case that pipe length (A+B or A+C or A+D) exceds 70m in 8 HP, please use a Ø12.7 pipe as a liquid pipe.
(mm)
IndoorUnitcapacity
PipeSize(B,C,D)
Gas Liquid
≤ 1.5 HP Ø12.70 Ø6.35
1.8 / 2.0 HP Ø15.88 Ø6.35
> 2.3 HP Ø15.88 Ø9.52
N O T E
ConnectionsincludingIndoorUnits8and10HParenotpossible.
4indoorunitssystem
1
2
1 2
3
4
 N O T E
(1)Incasethattotalpipelength(A+B+DorA+B+Eor
A+C+ForA+C+G)exceedsof70min8HPunit,please
useaØ12.7pipeasaliquidpipe.
(2)WhenisusedMulti-kitmodelQE-812N1itisnotne-
cesarythemulti.kit2.
F
G
(mm)
Outdoor
UnitHP
PipeSize(A)
Branchline

Gas Liquid
4 / 5 / 6 Ø15.88 Ø9.52
4HP: TE-04N1
5/6HP: TE-56N1
8 Ø25.40 Ø9.52(1)
TE-08N
QE-812N1(2)
10 Ø25.40 Ø12.70
TE-10N
QE-812N1(2)
(mm)
IndoorUnit
capacity
PipeSize(D,E,F,G)
TotalIndoorUnitcapacity
afterbranchpipe
1+2or3+4
PipeSize
(B,C)
Branchline

Gas Liquid
Gas Liquid ≤ 1.5 HP Ø12.70 Ø6.35
≤ 1.5 HP Ø12.70 Ø6.35 TE-03N1 1.8/2.0HP Ø15.88 Ø6.35
from 1.8 to 2.0 HP Ø15.88 Ø6.35 TE-03N1 ≥ 2.3 HP Ø15.88 Ø9.52
≥ 2.3 HP Ø15.88 Ø9.52
<4: TE-03N1
=4HP: TE-04N1
≥ 5HP: TE-56N1
Connections including Indoor Units 8 and 10 HP are
not possible
If the capacity ratio between IU group 1+2 and 3+4 is higher than 60/40% please install a line branch system or contact
with your Hitachi Dealer.