Hitachi RAs-R10ex, RAC-R10EX Installation Manual
FOR SERVICE PERSONNEL ONLY
above 100mm
❈ above 200mm
above 200mm
❈ above 100mm
❈ give clearance
as wide as possible
above 50mm
above 100mm
about 0.45m
above 300mm
must not bend
above 50mm when
installed on the
ceiling of balcony
above 200mm
2,300mm or more
4
5
3
6
Maximum pipe length 15m
Minimum pipe length 5m
above 100mm
1
2
!
!
●
Carefully read through the procedures of proper
installation before starting installation work.
●
The sales agent should inform customers regarding
the correct operation of installation.
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit Outdoor Unit
RAS-R10EX RAC-R10EX
SAFETY PRECAUTION
●
Read the safety precautions carefully before operating the unit.
●
The contents of this section are vital to ensure safety. Please pay special attention to the following sign.
WARNING ........ Incorrect methods of installation may cause death or serious injury.
!
!
CAUTION ......... Improper installation may result in serious consequence.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper way of operating
the unit as described in the user’s guide.
!
WARNING
●
Please request your sales agent or qualified technician to install your unit. Water leakage, short circuit or fire may
occur if you do the installation work yourself.
●
Please observe the instructions stated in the installation manual during the process of installation. Improper
installation may cause water leakage, electric shock and fire.
●
Make sure that the units are mounted at locations which are able to provide full support to the weight of the units.
If not, the units may collapse and impose danger.
●
Observe the rules and regulations of the electrical installation and the methods described in the installation manual
when dealing with the electrical work. Use wire which is specified for the air conditioner. A short circuit and fire
may occur due to the use of low quality wire or improper work.
●
Be sure to use the specified wire for connecting the indoor/outdoor units. Please ensure that the connections are
tight after the conductors of the wire are inserted into the terminals. Improper insertion and loose contact may
cause over-heating and fire.
●
Please use the specified components for installation work. Otherwise, the units may collapse or water leakage,
electric shock and fire may occur.
●
Do not mix any coolant other than R-22 into the cooling circulation path when mounting or shifting the unit. If it
is mixed with air, the high pressure in the circulation path will rise and this may result in broken copper pipes or
faults.
!
CAUTION
●
Be sure to use the earth line. Do not place earth line near gas or water pipes, lightning conductor and
the earth line of telephone. Improper earthing may cause electric shocks.
●
A circuit breaker should be installed depending on the mounting size of the unit. Without a circuit breaker, the
danger of electric shocks exists.
●
Do not install the unit near a location where there is flammable gas. The outdoor unit may
catch fire if flammable gas leaks around it.
Please ensure smooth flow of water when installing the drain hose.
●
Tools Needed For Installation Work
●
+ – Screwdriver ● Measuring Tape ● Knife
●
Saw
●
Detector ● Pipe Cutter ● Plastic Tape ● Pliers
●
ø 65mm Power ● Drill Allen Key ( 4mm)
Wrench (14, 17, 19, 22mm)
●
Gas Leakage
Flare Tool
THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation).
WARNING
●
The unit should be mounted at stable, non-vibratory location which
can provide full support to the unit.
CAUTION
●
No nearby heat source and no obstruction near the air outlet is
allowed.
●
The clearance distances from top, right and left are specified in
figure below.
●
The location must be convenient for water drainage and pipe
connection with the outdoor unit.
●
To avoid interference from noise please place the unit and its
INDOOR UNIT
remote controller at least 1m from the radio, television and inverter
type fluorescent lamp.
●
To avoid any error in signal transmission from the remote controller,
please put the controller far away from high-frequency machines
and high-power wireless systems.
●
The installation height of indoor unit must be 2.3m or more.
Names of Indoor Components
QtyNo. Item
Mounting Plate
1
Screw for Mounting
Plate
2
Holder for Remote
Controller
3
AAA Size Battery
4
Screw for holder of
Remote Controller
5
Remote Controller
6
Purifying Filter
7
Holder
8
Air Exchanger Filter
9
Air Duct Filter
0
Insulation Sheet
!
Anti Insect Ventilate
Net
@
Rain Proof Ventilate
Protection Cap
#
(3.1x16)
$
1
%
5
^
1
&
2
2
*
1
(
1
)
1
1
q
1
w
1
e
1
r
1
Binder
Right Downward
Pipe Connector
Right Horizontal
Pipe Connector
Right Connector
Left Backward
Pipe Connector
Left Downward
Pipe Connector
Left Horizontal
Pipe Connector
Right Horizontal
Pipe Connector
Ventilation pipe
Extension
Ventilation
Pipe
Outdoor Thermistor
Extension Wire
●
The outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase.
●
Do not expose the unit under direct sunshine or rain. Besides,
ventilation must be good and clear of obstruction.
●
The air blown out of the unit should not point directly to animals
or plants.
●
The clearances of the unit from top, left, right and front are specified
in figure below. At least 2 of the above sides must be open air.
●
Be sure that the hot air blown out of the unit and noise do not
disturb the neighbourhood.
OUTDOOR UNIT
●
Do not install at a location where there is flammable gas, steam,
oil and smoke.
●
The location must be convenient for water drainage.
●
Place the outdoor unit and its connection wire at least 1m away
from the antenna or signal line of television, radio or telephone.
This is to avoid noise interference.
QtyNo. Item
Figure showing the Installation of Indoor and Outdoor Unit.
!
1
CAUTION
In case the pipe length is more than 8m, add refrigerant R22 at 10 gram
per every meter exceeds. However, pipe length shall not exceed 15m.
1
The Length of Indoor
Unit Power Cord
Horizontally
perpendicular
to the unit
Be sure to
completely
seal any
gap with
putty.
about
0.9m
1
Do not alter the power cord.
1
1
1
Direction of Piping
Connection
There are 4 directions
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right
and horizontally out to left.
Don’t form the piping
downward at the left of the
unit.
about 1.6m
1
1
1
1
Cut away shaded
portion, and finish
the edge of the
1
opening so that
there is no burr.
20
!
WARNING
!
CAUTION
Dimension of Mounting
Stand of the outdoor unit
(unit : mm)
mounting stand
35
12
8
225
35
500
100
● The difference in
height between
the indoor and
outdoor unit
should be kept
below 5m.
● The connecting
pipe, no matter
big or small,
should all be
insulated with
insulation pipe
and then wrapped
with vinyl tape.
(The insulator will
deteriorate if it is
not wrapped with
tape).
The connection of insulated drain hose.
Please use insulated
drain hose for the
indoor piping
(commercial product).
1
Air Exchanger And Exhaust Hose Installation
The air exchanger and exhaust function is included in this model. Please follow the installation
instructions when mounting.
Please install only with the customer’s consent
●
The air exchanger should not be operated under the following conditions:
(A) When the air exchanger hose cannot be vented directly outside the room (mounting work specified for
the embedded ducting).
(B) When there is a source of a questionable odor, smoke, or oily smoke in the vicinity of the opening of
the air exchanger hose, even if the mounting work directly vents the air exchanger hose outside the room.
●
The fresh air in should not be operated (only exhaust can be operated) under the following conditions:
(C) When there is space to vent the air exchanger hose between the internal and external walls, which leads
outside the room, even if the mounting work cannot directly vent the air exchanger hose outside the room
(conventional construction methods).
●
Please set the Air Exchanger Selection Switch according to the mounting configuration.
[Dimensions when Installing included Fittings]
Under the following conditions, the device can be installed with these fittings alone.
●
ø20 two way air exchange hose
Vented within 0.9m to the left and down or within 1.4m to the right and down.
Diagram Describing Backward Piping From Left
Air Exchanger Hose
Drain Hose
Connecting Cable
Refrigerating Pipe
Diagram Describing Horizontally Piping From Right
Within 0.9m
Within 0.9m
Dimensions when installing the fitting for ø20 air exchanger hose
Part Name Cap
Backward piping
Vertically down from right
Horizontally piping from right
Backward piping from left
Vertically down from left
Horizontally piping from left
Remark
ø20 Air
Exchanger Hose
Net
When Air Exchanger cover
(HC-D55) is not using.
Within 1.4m
Within 1.4m
Extension Pipe Connector
Air Exchanger Hose
Drain Hose
Refrigerating Pipe
Diagram Describing Vertically Down From Left
Air Exchanger Hose
Drain Hose
<
I719: A
>
Connecting Cable
Refrigerating Pipe
Drain hose
1
Installation of Mounting Plate, Wall Penetration And Protection Pipe
2
Installation of the Indoor Unit
!
CAUTION
●
The draining of the water container inside the indoor unit can be done from the left. Therefore the mountting plate must be
fixed horizontally or slightly tilted towards the side of drain hose. Otherwise, condensed water may overflow the water
container.
Direct Mounting On The Wall
●
Please use hidden beams in the wall to hold the mounting plate.
Visible Outline Of The Indoor Unit
Level
The end of big
refrigerant pipes.
Center line for
mounting plate
The end of small
refrigerant pipes.
level adjustment.
Drain Hose
Stamp
Line
500 mm500 mm500 mm500 mm500 mm
Weight
Wall Hole
Screw For
Hanger
VERTICALLY DOWNWARD PIPING
Preparation
●
Connect connecting cord.
●
Pull out the pipe, power cord and drain hose.
Installation
●
The upper part of the indoor unit is hanged on the mounting plate.
●
The projection at the lower part of the indoor unit is hooked onto the mounting plate.
Hanger
Refrigerating Pipe
Projection Pipe
HORIZONTAL PIPING
Drain Hose
Two Way Air
Exchange Hose
Connecting Cord
Wrap With The
Tape
Hanger
Projection
Procedures of Installation and Precautions
●
Procedures to fix the mounting plate.
1.Drill holes on wall. 2. Fix the mounting plate on wall
(As shown below) with 4.1 x 32 screw
(As shown in figure below)
INDOOR UNIT
●
Procedures to fix the holder of remote control.
1.Drill holes on wall.
(As shown below)
Preparation
Change of Drain Hose and Installation Procedures.
●
Exchange the location of drain hose and drain cap during horizontal piping as shown
in figure below. Be sure to plug in the drain hose until the insulating material folds upon
itself.
●
Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain cap).
Drain Cap
Drain Hose
!
CAUTION
Please pull the lower part
of the indoor unit
outwards to check if the
unit is hooked onto the
mounting plate. Improper
installation may cause
vibration and noise.
Wall Penetration and Installation of Protection Pipe
●
Drill a ø 65mm hole on wall which is slightly tilted towards
the outdoor side. Drill the wall at a small angle.
●
Cut the protection pipe according to the wall thickness.
●
Empty gap in the sleeve of protection pipe should be
Indoor
completely sealed with putty to avoid dripping of rain water
into the room.
WALL
Protection
pipe
Sleeve of
protection pipe
HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
●
During horizontal or downward piping, use a knife to cut openings as shown in figure.
Then smoothen the edges of openings with a file.
Pipe support
Outdoor
2~5mm
Seal with
putty
!
CAUTION
Be sure that the wire is not
in contact with any metal
in the wall. Please use the
protection pipe as wire
passing through the hollow
part of the wall so as to
prevent the possibility of
damaged by mouse.
Openings
Drain cap
Drain cap
Please insert
until here
Drain hose
Please insert
until here
!
CAUTION
Condensed water may leak
out if not inserted properly.
THE CONNECTION OF COOLANT PIPE DURING THE INSTALLATION OF INDOOR UNIT
Preparation To Install Coolant Pipes
●
Coolant pipes and power cord must be tied together.
Openings
Pull Up The pipe After
Bending Downward
●
Transform the piping while holding down the lower
portion of pipe-support by hand.
INSTALLATION OF COOLANT PIPES AFTER CONNECTION
●
The coolant pipes should be adjusted to fit into the hole on the wall and then ready for further connection.
●
The terminals of 2 connected pipes must be covered with insulator used for terminal connection.
●
Connect the power cord.
●
After adjustment, fit the power cord and pipes into the space available under the indoor unit.
Drain layout of backward piping
Cross section view for pipes
from left ¿65 area
arrangement at backward ø65
wall diameter.
Please Bend At A Small
Radius To Form An Arc
Below 5mm
Projection
!
CAUTION
●
Please fix in the plastic core
after flaring to avoid plastic
chips entering the pipes.
Hook
Temporary
Support
About 15cm
Wall Hole
Insulation Pipe (must be wrapped
with vinyl tape at every 120mm).
Coolant Pipe
Bend Coolant Pipe Until
Touching Air Exchanger
Hose As Shown in Figure
!
●
The rubber strap used for
fixing the insulator should not
be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
Pipe
Air Exchanger Hose
CAUTION
Rubber strap tied with great force
Installation
Hang the indoor unit onto the mounting plate. Use the temporary stand at the back of the indoor unit to push its lower
part 15cm forwards.
●
Place the drain hose through the hole on the wall.
●
Insulate the connecting portion of coolant pipe with insulator.
●
Connect the power cord.
●
After adjustment, the power cord and coolant pipes are placed into the space available under the indoor unit.
●
The projection of indoor unit must hook to the mounting plate.
Air Exchange Hose
Protection Pipe
Drain Hose
Holder
Connecting
Connected Section
Cord
Insulation Material
For Pipe Connection
Connecting Cord
Sub Insulation Sheet
Refrigerating Pipe
Heat Insulation Pipe
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