Hitachi 3HRNM1Q Installation & Maintenance Manual page 16

Incorrect
Outdoor Unit
is Unstable.
Frame
Frame Width 60mm
(Field-Supplied)
Correct
Outdoor Unit
is Stable.
Frame
Recommended Metal Plate Size (Field-Supplied)
Material: Hot-Rolled Mild Steel Plate (SPHC)
Plate Thickness: 4.5T
Fig. 4.6 Frame and Base Installation
Base Width of Outdoor Unit
75mm
Base Width of Outdoor Unit
75mm
Metal Plate
Metal Plate
100mm or more
(unit:mm)
C10
Hole