Hitachi RAS-AJ18CMT Installation Manual

FOR SERVICE PERSONNEL ONLY
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit Outdoor Unit
RAS-AJ18CMT RAC-AJ18CMT
SAFETY PRECAUTION
Read the safety precautions carefully before operating the unit.
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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
!
Flare nut must use a torque wrench without fail. Tighten with the specifi ed tightening torque. If the fl are nut is tightened too
●
much, after a long period of time, the fl are nut breaks, Gas leakage, stagnation, touching fi re, rarely cause ignition.
Sharp bending of the pipe use the polyethylene rod, bend not crushed the pipe. Gas leakage from the crushed part, stagnation,
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touching fi re, rarely cause ignition.
● Please request your sales agent or qualifi ed technician to install your unit. Water leakage, short circuit or fi re 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 fi re.
● 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.
Please ensure smooth fl ow of water when installing the drain hose.
●
Piping shall be suitable supported with a maximum spacing of 1m between the supports.
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Please use the specifi ed components for installation work. Otherwise, the units may collapse or water leakage, electric shock
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and fi re may occur.
Be sure to use the specifi ed piping set for R32. Otherwise, this may result in broken copper pipes or faults.
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When installing or removing an air conditioner, only specifi ed refrigerant (R32) shall be allowed, do not allow air or moisture
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to remain in the refrigeration cycle. Otherwise, pressure in the refrigeration cycle may become abnormally high so that a
rupture may be caused.
Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fi re, a poisonous
●
gas may occur. Be aware that refrigerants may not contain an odour.
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks
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into the room, coming into contact with fi re in the fan-driven heater, space heater, etc., a poisonous gas may occur.
Unauthorized modifi cations to the air conditioner may be dangerous. If a breakdown occurs please call a qualifi ed air conditioner
●
technician or electrician. Improper repairs may result in water leakage, electric shock and fi re, etc.
WARNING
!
Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.
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Any unfi t method or using incompatible material may cause product damage, burst and serious injury.
The appliance/pipe-work shall be stored in a well ventilated room with fl oor area larger than A
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installation] and without any continuously operating ignition source. Keep away from open fl ames, any operating gas
appliances or any operating electric heater. Else, it may explode and cause injury or death.
The appliance/pipe-work shall be installed, and/or operated in a room with fl oor area larger than A
●
fi gure installation] and keep away ignitioon sources, such as heat/spark/open fl ame or hazardous areas such as gas
appliances, gas cooking, reticulated gas supply systems or electric cooking appliances, etc.
● Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, fl ame, sparks, or other
sources of ignition. Else, it may explode and cause injury or death.
1
Installation of Hanger, Wall Penetration and Installation of Protection Pipe
CAUTION
!
The draining of the water container inside the indoor unit can be done from the left.
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Therefore the mounting plate must be fi xed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may overfl ow the water container.
Direct Mounting On The Wall
Please use hidden beams in the wall to hold the mounting plate.
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Procedures of Installation and Precautions
Procedures to fi x the mounting plate.
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1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
● Procedures to fi x the holder of remote control.
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
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 completely sealed with
putty to avoid dripping of
rain water into the room.
< >
IA1994: A
Carefully read through the procedures of proper
●
installation before starting installation work.
The sales agent should inform customers regarding
●
the correct operation of installation.
Tools Needed For Installation Work
( mark is tool exclusive use for R32)
+ – Screwdriver
● ● Measuring Tape ● Knife
Pipe Cutter Hexagonal Wrench Key ( 4mm)
● ●
● Power Drill (ø 65mm ~ ø 80mm) ● Vacuum Pump
● Pliers or Wrench ● Torque Wrench Vacuum Pump
Adaptor Flare Tool Gas Leakage Detector
Manifold Valve Charge Hose
(m 2 ) [refer to fi gure
min
(m 2 ) [refer to
min
2 Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
Preparation
Connect connecting cord.
●
Pull out the pipe, connecting 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.
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Push up the (PUSH) sections at the bottom of the indoor unit and
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pull the bottom plate towards you. Then the claws are released from
the stationary plate.
(The (PUSH) sections are indicated by 2 arrows in the right fi gure)
HORIZONTAL PIPING
Preparation
Change of Drain Hose and Installation Procedures.
Exchange the location of drain hose and drain cap during horizontal piping as shown in
●
fi gure below. Be sure to plug in the drain hose until the insulating material folds upon itself.
3. Fix the mounting plate on wall
with 4.1 x 32 screw
Please use pliers to pull
(As shown in fi gure below) ●
out the drain cap.
(This is an easier way to
remove the drain cap).
Drain cap
Remove the cap for
●
drain hose installation
WARNING
!
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.
Unless it seals completely,
any air with high humidity
!
flows from outdoor and
dew may drop.
CAUTION
THE CHOICE OF MOUNTING SITE
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
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allowed.
The clearance distances from top, right and left are specifi ed in
●
fi gure below.
The location must be convenient for water drainage and pipe
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● Saw connection with the outdoor unit.
● To avoid interference from noise please place the unit and its
remote controller at least 1m from the radio, television and inverter
type fl uorescent 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
No. Component's Name Qty
Mounting Plate
1
1
There are 6 directions
allowed, namely, horizontally
Screw for Mounting Plate
perpendicular to the unit,
6
2
vertically down from right,
( 4 . 1 x 3 2 )
horizontally out from right,
horizontally out to left,
Remote Control Holder
horizontally out to right,
vertically down from left.
1
3
Don't form the piping downward
at the left of the unit.
Dimension of Mounting Stand
AAA Size Battery
2
4
(unit : mm)
Screw for holder of
Remote Controller
2
5
(3.1x16)
Remote Controller
1
6
A brazed, welded or mechanical
●
Purifying Filter
connection shall be made before
opening the valves to permit
2
7
refrigerant to fl ow between the
refrigerating system parts. A vacuum
valve shall be provided to evacuate
the interconnecting pipe and/or any
uncharged refrigerating system.
WARNING
Mechanical connectors used indoor
●
This symbol shows that this equipment
shall comply with ISO 14903.
uses a fl ammable refrigerant.
When mechanical connectors are
If the refrigerant is leaked, together
reused indoors, sealing parts shall
with an external ignition source, there
be renewed. When fl are joints are
is a possibility of ignition.
reused indoors, the fl are part shall
be re-frabricated.
CAUTION
Refrigerant tubing shall be protected
This symbol shows that the Operation ●
or enclosed to avoid damage.
Instructions should be read carefully.
CAUTION
This symbol shows that a service
personnel should be handling this
equipment with reference to the
Installation Manual.
CAUTION
This symbol shows that there is
information included in the Operation
Manual and/or Installation Manual
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.
HOW TO REMOVE INDOOR UNIT
Drain cap shall
be fully tightened
by pushing with
Hexagonal wrench
key when changing
location.
Condensed water
may leak out if not
inserted properly.
(Please note the following matters and obtain permission from customer before installation).
WARNING
!
The outdoor unit must be mounted at a location which can support
●
heavy weight. Otherwise, noise and vibration will increase.
CAUTION
!
Selecting the installation location: Suitable location that will reduce the
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impact from rain and direct sun that may affect the unit performance.
Besides that, ventillation must be good and clear of obstruction.
The air blown out of the unit should not point directly to animals or plants.
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The clearances of the unit from top, left, right, front and back are specifi ed
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in fi gure below. At least 3 of the above sides must be open air.
Be sure that the hot air blown out of the unit and noise do not disturb
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the neighbourhood.
Do not install at a location where there is fl ammable 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
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antenna or signal line of television, radio or telephone. This is to avoid
noise interference.
Do not install outdoor unit facing strong wind direction. It may damage
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Direction of Piping
the fan motor.
Do not install the outdoor unit in a place where small animals may build
●
their nests. If small animal goes inside the unit and touches the electrical
parts, failure of the unit, smoke or fi re may be caused. Request your
customer to keep the surrounding of the unit is clean.
Figure showing the Installation of Indoor and Outdoor Unit.
CAUTION
!
In case the pipe length is more than the recommended length for chargeless,
add refrigerant R32 as below. Do not exceed the maximum pipe length.
Factory Indoor
Model
charge R32 A (m 2
min
RAC-AJ18CMT 1.20kg 0.84m 2
of the outdoor unit
WARNING
!
Flare connection only at outside of building
●
Be sure to
completely
seal any
gap with
putty.
CAUTION
Refrigerant piping
must be protected
from physical
damage. Install a
plastic cover or
equivalent.
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
● The refrigerating pipes should be adjusted to fi t 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. Then the pipes are wrapped with
insulation pipe.
● Connect the connecting cord after removing electrical cover.
(Refer to "CONNECTION OF POWER CORD")
● After adjustment, fi t the connecting cord and pipes into the
space available under the indoor unit.
● When connection is at left side, refrigerating pipe and cabinet
shall be tied together.
Failing to do so may cause the unit bottom side become warping.
Excess binder shall be cut to prevent abnormal sound and water
dripping.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
The refrigerating pipes and connecting cord
●
arrangement are attached.
The end of the refrigerating pipes are at locations
●
marked with " " symbol.
0.85m
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.
●
Wrap the refrigerating pipes with insulation pipe after connecting
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refrigerating pipe.
● Connect the connecting cord after removing electrical cover. (Refer
to "Connection of Power Cord")
● After adjustment, the connecting cord and refrigerating pipes are
placed into the space available under the Indoor unit.
The projection of Indoor unit must hook to the mounting plate.
●
Heat insulation pipe
Pull this to the front
during the connection
Connecting of refrigerating pipes
cord
to ease task.
Refrigerating pipe
3
Installation of Drain Hose
Do not guide the drain hose to places where corrosive gases (sulfur,
●
ammonia, etc.) are generated, such as septic tanks and sewer.
!
Corrosive gas may fl ow backward from the drain hose to the indoor unit,
corrode the copper pipe, or it may cause offensive odors in the room.
CAUTION
Cut the drain hose at a position 100 mm higher than the fl oor surface. It
●
may cause water leakage due to air lock or clogging of foreign matter.
Above
100mm
You are free to choose the side (left or right) for the installation of drain
!
hose. Please ensure the smooth fl ow of condensed water of the Indoor
CAUTION
unit during installation. (Carelessness may result in water leakage.)
Chargeless Additional Maximum
) up to charge R32
R32
––
20m 1.20kg
The indoor piping
should be insulated
with the enclosed
insulation pipe.
(If the insulator is
insuffi cient, please
use commercial
products).
● The difference in
height between the
indoor and outdoor
unit should be kept
max 10m.
The connecting
●
pipe, no matter big
or small, should
all be insulated
with insulation pipe
and then wrapped
with plastic 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 (commer-
cial product).
CAUTION
!
The rubber strap used for fi xing
●
the insulator should not be tied
with great force. Otherwise, this
will damage heat insulation and
causes water condensation.
CAUTION
!
Please fi x in the plastic core
●
after fl aring to avoid copper
chips entering the pipes.
CAUTION
!
Be sure that the
drain hose is not
loosely connected
or bend.