Hitachi RAS-(4-12)HNP(1)(E) - Page 88

3 Piping work and
refrigerant charge
74
SMGB0087 rev.0 - 12/2013
IVX Standard series
(m)
OutdoorUnit 3HP 4HP 5HP 6HP 8HP 10HP 12HP
Maximumpipinglengthbet-
weentheoutdoorunitandthe
farthestindoorunit
ActualLength(L) 50 70 75 100
EquivalentLength(EL) 70 90 95 125
Totalpipinglength
2units(A+B+C) 60 80 85 100 115
3units(A+B+C+D) -- 90 95 100 130
4units
(A+B+C+D+E+F+G+)
-- 90 95 100 145
Maximumpipinglineafterrst
branch
2and3units(B,C,D) 10 15
4units
(B+D,B+E,C+F,C+G)
-- 10 15
MainpipinglengthA A > B, C, D, E, F, G
MaximumheightdifferenceOutdoor/Indoor(H)
(OutdoorUnitisHigher/Lower)
30 / 20
MaximumheightdifferenceIndoor/Indoor 3
Maximumheightdifference:
branchpipe/Indoor(2,3and4indoorunitssystem)
branchpipe/branchpipe(4indoorunitssystem)
3
Maximumlenthdifferenceoftheseveralbranches:
(B-C)(2and3unitsystem)
(B-D)(3unitsystem)
(C-D)(3unitsystem)
(C+G)-(C+F)(4unitsystem)
(B+E)-(B+D)(4unitsystem)
(C+G)-(B+E)(4unitsystem)
(C+G)-(B+D)(4unitsystem)
(C+F)-(B+E)(4unitsystem)
(C+F)-(B+D)(4unitsystem)
< 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.