Hitachi RAS-4-6FSVNME, Instruction Manual

Page: 26 / 40

7.4 SPECIFIC CONDITIONS DEPENDING ON THE TYPE OF INSTALLATION
7.4.1 Placing the unit on a concrete foundation
1
Foundation must be flat and is recommended 100-300 mm
higher than ground level.
2 Install a drainage around foundation for smooth drain.
3 When installing the outdoor unit fix it with anchor bolts of
M10. Cut the portion A of the anchors to remove the service
cover easily. Vibration-proof mats must also be laid out
entirely on the foundation.
Unit: mm
A Outdoor unit
Vibration-proof
rubber
Anchor bolt M10
(Ø12.5 Hole)
Drainage Drainage
(wide 100 x depth 150)
Mortar hole
(Ø100 x depth 150)
* Space for
downward piping
space
*
*
* Space for
downward piping
space
?
N O T E
When the mark * dimension is secured, piping work from bottom side is
easy without interference of foundation.
4 For RAS-(4-6)FS(V)NME an additional metal plate (field-
supplied) is needed for steady installation in case the base
width is bigger than the frame width.
- Material: Hot-Rolled Mild Steel
-
Plate (SPHC) Plate Thickness: 4.5 T
<
>
Base width of
outdoor unit
Metal plate width
Frame width
7.4.2 Fixing the unit to a wall
To fix the outdoor unit onto the wall
as the figure indicates make sure
the foundation is enough strong to
avoid deformations and noises. If
a prevention of vibration transfer to
the building is needed, use rubber
mat. (Field supplied)
B
A
C
Rubber Material
(Field Supplied)
Right side
(mm)
Left side Right side
A B C A B C
RAS-(4-6)FS(V)NME 1109 116 30 1109 116 75
RAS-(8-12)FSXNME 1173 110 34.5 1173 110 75
7.4.3 Suspending the unit
Ensure that wall can resist the
outdoor unit weight indicated
in specification label plate. It is
recommended to select each foot
support to bear the full weight
of the unit (in order to consider
stress fatigue applied when unit is
working too). Suspend the unit as
the drawing indicates.
Wall bracket (Field
supplied)
Anchor Bolts
(Field supplied)
!
C A U T I O N
• Installation shall ensure that outdoor unit will not incline, vibrate, make
noise or fall down by a blast of wind or in an earthquake. Calculate
quake-resistance strength to ensure that installation is strong enough
against falling. Fix the unit with wires (field supplied) when installing
in a location without walls or windbreak and likely exposed to a blast
of wind.
• To use a vibration-proof mat, fix four places to the front and back.
7.4.4 When the unit is exposed to strong wind
To install on the rooftop or a location without surrounding
buildings, where strong wind is expected against the product.
• Choose a location where the outlet
or inlet side of the product will not
be exposed to strong wind.
• When the outlet is exposed to
strong wind:
Direct strong wind may cause lack
of air flow and adversely affect to
the operation.
!
C A U T I O N
Excessive strong wind against the outdoor unit outlet may cause inverse
rotation and damage the fan and motor.
NAME OF PARTS
PMML0511 rev.1 - 06/2019 26