Hitachi RAS-(4-12)HNP(1)(E) - Page 38

2 Unit Installation
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SMGB0087 rev.0 - 12/2013
Stackinstallation(allowedupto2Units)
UpperSideOpen
Single Installation Multiple Installation
Close the part A not to allow the outlet air bypassed. Install to
avoid the drain water from upper unit falling on the lower unit.
Allow 100 mm of space between units. Serial sideways installa-
tion allowed up to two units. Leave open both right and left sides.
Close the part A not to allow the outlet air bypassed. Install to
avoid the drain water from upper unit falling on the lower unit.
UpperSideBlocked
Single Installation Multiple Installation
Be sure to use the fan direction guide. Close the part A not to
allow the outlet air bypassed. Install to avoid the drain water from
upper unit falling on the lower unit.
Be sure to use the fan direction guide. Allow 100 mm of space
between units. Serial side way installation allowed. but leave
open both right and left sides. Close the part A not to allow the
outlet air bypassed. Install to avoid the drain water from upper
unit falling on the lower unit.
MultipleInstallationinMultipleRows
Serial Installation in Multiple Rows (E.g. Rooftop)
Allow approx. 100 mm of space from the side unit. Leave open
both right and left sides.
The length A is as shown in the following table:
L A
0 < L ≤ 1/2H ≤ 300
1/2H < L≤ H ≤ 350
 N O T E
WhenL>HuseabaseforoutdoorunittomakeL=H.Closethebasenottoallowtheoutletairbypassed.Besureto
usethefandirectionguideinordertoensurethelengthmarkedwith..