Hitachi SET FREE-Serie Bedienungsanleitung Seite 27

UNIT INSTALLATION
7 Unit installation
7.1 PreliminarY ConDitions for PositioninG of oUtDoor Unit
Mount the outdoor unit in a shady location or where it will not
be exposed to direct sunlight, or to high temperatures. It should
also be a well-ventilated spot.
Mount the outdoor unit so that noises and the discharge of
air from the unit will not bother neighbours or the surrounding
environment.
Install the outdoor unit in an area of limited access to the
general public.
In cold climates, ice may form on the unit. When installing the
unit, make sure that ice falling off the unit could not pose a risk
to passers-by.
When installing the outdoor unit in areas covered by snow,
mount the covers supplied by the fitter on the top of the unit and
on the heat exchanger inlet side.
Do not install the outdoor unit in zones where dust or
contamination could block the outside heat exchanger.
Do not install the outdoor unit in areas with a high air content of
oil, saline atmospheres or aggressive gases such as sulphur.
7.2 installation sPaCe
D
C
A
> 500 + (h2)/2
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n o t e
Side view. All measurements are in mm.
Calculate the service space required during the installation of
the unit, based on the following:
7.3 installation
7.3.1 Installation with walls in two directions
If the units installed are adjacent to high buildings, without walls
in two directions, a space of 300 mm is required at the rear side
of the unit.
> 300
W W
> 10 > 200
> 400
17 PMML0479 rev.2 - 02/2018
B
765
> 300 + (h1)/2
> 300 > 300
> 500 + h2/2
> 400
Do not install the outdoor unit close to sources of strong
electromagnetic radiation or in areas where electromagnetic
waves radiate directly towards the electrical box and the
components of the unit. Install the unit as far as possible from
these sources (minimum 3 metres); electronic noise may result
in the incorrect operation of the unit.
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C a U t i o n
In areas with high electromagnetic turbulence, a fuse may blow or the
unit stop or an alarm may be triggered. In this case, stop the system and
restart it to remove the alarm.
Make sure that the base of the foundations is flat and strong
enough to bear the weight of the unit.
Install the outdoor unit in an area with enough space around the
unit to permit service and maintenance tasks.
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C a U t i o n
• The aluminium fins have sharp edges. Take special care to avoid injury.
• The outdoor unit must be installed on rooftops or in areas not
accessible by the user. Only service technicians and maintenance
personnel are permitted access to the unit.
• If there are no walls in front of or behind the unit, a space of
500 mm is necessary in front -A- and 300 mm behind -B-.
• If the front wall is higher than 1500 mm, a space of (500 +
(h2)/2) mm is required at the front -A-.
• Right and Left sides: Min. 10 mm.
• If the rear wall is higher than 500 mm, a space of (300 +
(h1)/2) mm is required at the back -B-.
• If a wall -D- is installed in front of the unit, a ventilation hole
-C- should be made in the wall.
• When the space over the unit is less than 1500 mm, or the
space around the unit is closed, a duct is required to prevent
short-circuits between the inlet air and the discharge air.
• If there are any obstacles in the space over the unit, the four
sides of the unit should be left open.
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• All measurements are in mm.
• Top view. The arrow ▼ indicates the front of the unit.
• W: No limit for side wall height.