Hitachi UTOPIA RAS-4HVRP2E Installations- Und Betriebshandbuch Seite 37

Units insallation
Single Installation
Upper Side Open
Mount the airflow guide and provide sufficient space on both right and
left sides.
A
0 < L ≤ 1/2H 1/2H < L ≤ H
Min. 600 Min. 1400
6 PMML0545 rev.2 - 04/2021
Blocked in Inlet Side
Outlet Side Blocked
Upper Side Open
Right and Left Blocked
Single Installation
Multi-Row and Multiple Installations
B
0 < L ≤ 1/2H 1/2H < L ≤ H
Min. 300 Min. 350
Multiple Installation (Two units or more)
Upper Side Blocked
When using airflow guide (AG-335A, optional), check that the
discharged air is not short-circuited to the air inlet side.
When L > H use a base for outdoor unit to make L ≤ H.
Close the base not to allow the outlet air bypassed.