Installation Instructions; Installation Diagram; Select The Installation Locations; Indoor Unit Installation - Hitachi RAC-AJ10PCASM Installation & Operation Manual

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Installation instructions

Installation diagram

Distance from ceiling
Distance from wall
over 200 mm
should be over
50mm
Distance from the obstacle
should be over 3000mm.
Distance from floor
should be
over 2500mm.
Distance from the
obstacle should be
over 500mm.
Air intake distance
from the wall
should be
over 250mm
Above figure is only a simple presentation of the unit, it may
not match the external appearance of the unit you purchased.
Installation must be performed in accordance with the
national wiring standards by authorized personnel only.

Select the installation locations

Location for Installing Indoor Unit
1. Where there is no obstacle near
the air outlet and air can be easily
blown to every corner.
2. Where piping and wall hole can
be easily arranged.
3. Keep the required space from
the unit to the ceiling and wall
according to the installation
diagram on previous page.
4. Where the air filter can be easily
removed.
5. Keep the unit and remote controller 1m or more
apart from television, radio etc.
6. Keep as far as possible from fluorescent lamps.
7. Do not put anything near the air inlet to obstruct it
from air absorption.
8. Install on a wall that is strong enough to bear the
weight of the unit.
9. Install in a place that will not increase operation
noise and vibration.
10. Keep away from direct sunlight and heating
sources. Do not place flammable materials or
combustion apparatuses on top of the unit.
should be
Distance from
the wall
should
be over 50mm
Air intake
distance from
the wall
should be
over 250mml
over 250mm
Indoor unit
Pipe length
is 15 meters
Max.
Outdoor
unit
Location for Installing Outdoor Unit
1. Where it is convenient to install and well ventilated.
2. Avoid installing it where flammable gas
could leak.
3. Keep the required distance
apart from the wall.
The pipe length between indoor and
outdoor unit should be not more than
5 meters in factory default status, but it
can go up to maximum 15 meters with
additional refrigerant charge.
6. Keep the outdoor unit away
from greasy dirt, vulcanization
gas exit.
7. Avoid installing it by the
roadside where there is a risk
of muddy water.
8. A fixed base where it is not subject to increased
operation noise.
9. Where there is not any blockage of the air outlet.
10. Avoid installing under direct sunlight, in an aisle
or sideway, or near heat sources and ventilation fans.
Keep away from flammable materials, thick oil fog,
and wet or uneven places.
Max. allowed pipe
Model
length without additional
refrigerant (m)
5
5K~18K
21K 25K
~
5
28K~36K
5
If the height or pipe length is out of the scope of the
table, please consult the dealer.

Indoor unit installation

1. Installing the Mounting Plate
Decide an installing location for the mounting plate
according to the indoor unit location and pipe
direction.
Keep the mounting plate horizontally with a
horizontal ruler or level.
Drill holes of 32mm in depth on the wall for fixing
the plate.
Insert the plastic plugs to the hole, fix the mounting
plate with tapping screws.
Inspect if the mounting plate is well fixed. Then
drill a hole for pipe.
Tapping screw
Note: The shape of your mounting plate may be different
from the one above, but the installation method is similar.
Note: As the above figure shown, the six holes matched with
tapping screw on the mounting plate must be used to fix the
mounting plate, the others are prepared.
3
Pipe length is
15 meters Max.
Indoor unit
Required amount of
Limit of
pipe
Limit of Elevation
additional refrigerant
length (m)
Difference H (m)
(g/m)
15
5
15
5
15
5
Mounting plate
Outdoor unit
20
30
40

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