Hitachi RAS-(4-12)HNP(1)(E) - System Installation; Height Difference between Indoor Units and Distributor

3 Piping work and
refrigerant charge
80
SMGB0087 rev.0 - 12/2013
3.3.6 System installation
 N O T E
• Pipeconnectionsizeonoutdoorunits,indoorunitsandthemultikitordistributorvaryaccordingtothesystem.
• Thesizesoftheindoorandoutdoorunitscouldbedifferent.Adjusttheareadapter(accessory)totheindoorpipe
connectioninthesecases.

Height difference between indoor units and distributor
It is recommended to install all indoor units at the same height. When the height difference between the indoor units due
to building construction is necessary, this should be less than the value indicated in the table.
Maximumheightdifference(clarication)
≤≤≤≤
20m
≤
30m
IU1
OU1
OU1
≤
10m (IVX-P)
3m (IVX-C)
≤≤≤≤
20m
≤
30m
IU1
IU2
OU1
OU1
≤
3m
≤
3m
≤
10m (IVX-P)
3m (IVX-C)
≤≤≤≤
20m
≤≤≤≤
30m
IU1
IU3
IU2
IU2
OU1
OU1
≤
3m
≤
3m
≤
3m
≤
3m
≤
10m (IVX-P)
3m (IVX-C)
≤≤≤≤
20m
≤≤≤≤
30m
IU1
IU4
IU3
IU2
OU1
OU1
≤
3m
≤
3m
≤
3m
≤
3m
≤
3m
≤
3m
(≤
6m)
≤
10m (IVX-P)
3m (IVX-C)
≤≤≤≤
20m
≤
30m
IU1
IU4
IU3
IU2
OU1
OU1
≤
3m
≤
3m
≤
3m
≤
3m
ืืืื
30m
ืืืื
20m
ื
10m (IVX-P)
3m (IVX-C)
10m (IVX-P)
3m (IVX-C)
ื
ื
ืื
ืื
ืื
ืื
ืื
ืื
ื
ืื
ืื
ืื
ืื
ืื
N O T E
Allpicturesareasexample.Branchandheadersarenotshowedasrealsizesorrealpicture,fortheinstallationofthis
componentsfollowthetechnicaldocumentation.