Hitachi RAK-25QXA Installation Manual

FOR SERVICE PERSONNEL ONLY
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
RAK-25QXA
Indoor Unit
RAK-35QXA
RAK-50QXA

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.
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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.
!
Please request your sales agent or qualifi ed technician to install your unit. Water leakage, short circuit or fi re may occur if
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you do the installation work yourself.
Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
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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,
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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
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dealing with the electrical work. Use power cables approved by the authorities of your country.
Be sure to use the specifi ed wire for connecting the indoor and outdoor units. Please ensure that the connections are tight
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after the conductors of the wire are inserted into the terminals. Improper insertion and loose contact may cause over-heating
and fi re.
Please use the specifi ed components for installation work. Otherwise, the units may collapse or water leakage, electric shock
●
and fi re may occur.
Be sure to use the specifi ed piping set for R-410A. 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 (R410A) 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
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gas may occur.
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas
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leaks 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
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conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and fi re, etc.
!
A circuit breaker or fuse (16A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock exists.
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A main switch with a contact gap of more than 3mm has to be installed in the power supply line to the outdoor unit.
Do not install the unit near a location where there is fl ammable gas. The outdoor unit may catch fi re if
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fl ammable gas leaks around it.
Please ensure smooth fl ow of water when installing the drain hose.
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Piping shall be suitable supported with a maximum spacing of 1m between the supports.
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1
Installation of Mounting Plate, 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.
●
Mark
Screw for Mounting Plate
Please use more than
4 screws.
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)
Wall
1
Mounting plate
Plug
2
Screw
32mm
Wall
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
3
Remote
Control
Holder
5
20mm
Plug
Wall Penetration and Installation of Protection Pipe
Drill a ø 65mm hole on
●
Indoor
wall which is slightly tilted
towards the outdoor side.
Seal with
Drill the wall at a small
putty
angle.
Cut the protection pipe
●
according to the wall
thickness.
Empty gap in the sleeve
●
of protection pipe should
be completely sealed with WALL
Protection
pipe
putty to avoid dripping of
rain water into the room.
< >
IA1008: A
Carefully read through the procedures of proper
●
installation before starting installation work.
The sales agent should inform customers regarding
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the correct operation of installation.
Tools Needed For Installation Work
Screwdriver Measuring Tape
● ●
Saw ø 65mm Power Drill Hexagonal Wrench
● ● ●
Key ( 4mm) Wrench (14, 17, 22, 26, 27mm)
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Gas Leakage Detector Pipe Cutter
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Vinyl Tape Pliers Flare Tool
● ● ●
WARNING
CAUTION
2 Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
Preparation
Connect connecting cord.
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Pull out the pipe, connecting cord and drain hose.
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Installation
The upper part of the Indoor unit is hanged on the mounting plate.
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The projection at the lower part of the Indoor unit is hooked onto the mounting plate.
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Mounting plate
Protection
Pipe Drain Hose
Level
Mounting plate
Push up the (PUSH) sections at the
●
bottom of the indoor unit and pull the
bottom plate towards you. Then the
claws are released from the stationary
plate.
Hole for pipe (The (PUSH) sections are indicated by
2 arrows in the right fi gure)
3. Fix the mounting plate on HORIZONTAL PIPING
wall with 4.1 x 32 screw
Preparation
(As shown in fi gure below)
Change of Drain Hose and Installation Procedures.
Ceiling
Exchange the location of drain hose and drain cap during horizontal piping as shown in
●
above 50mm
fi gure 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).
4.1 x 32 Screw
Screw
Outdoor
CAUTION
WARNING !
!
2 ~ 5mm
Be sure that the wire is not
Seal with
Horizontal & Downward Piping – Making Openings
in contact with any metal
putty
in the wall. Please use
During horizontal or downward piping, use a knife to cut
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the protection pipe as wire
openings as shown in fi gure. Then smoothen the edges of
passing through the hollow
part of the wall so as to
openings with a fi le.
prevent the possibility of
damaged by mouse. Pipe
support
Unless it seals completely,
any air with high humidity
Sleeve of flows from outdoor and
protection pipe
any dew may drop.
THE CHOICE OF MOUNTING SITE
The unit should be mounted at stable, non-vibratory location which can provide full support to the unit.
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No nearby heat source and no obstruction near the air outlet is allowed.
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The clearance distances from top, right and left are specifi ed in fi gure below.
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The location must be convenient for water drainage and pipe connection with the Outdoor unit.
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Knife
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To avoid interference from noise please place the unit and its remote controller at least 1m from the radio, television and
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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
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Putty
machines and high-power wireless systems.
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The installation height of indoor unit must be 2.3m.
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Names of Indoor Components
No. Item
Mounting plate
1
Screw for Mounting plate
2
( 4 . 1 x 3 2 )
Remote Controller holder
3
AAA Size Battery
4
Screw for Remote
Controller holder
5
( 3 . 1 x 1 6 )
Remote Controller
6
Air Purifying Filter
7
● 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).
Mounting plate
CAUTION
!
Lift the body
Refrigerating Please pull the lower part of
of the unit
Pipe
upwards and the Indoor unit outwards to
then force it
check if the unit is hooked
downwards.
onto the mounting plate.
Improper installation may
Connecting cause vibration and noise.
Projection
Cord
HOW TO REMOVE INDOOR UNIT
[Push] mark positions
Drain hose
Drain cap
Drain cap
Drain hose
Please insert Please insert
until here until here
Condensed water may leak out if not inserted properly.
Turn the piping while holding down the lower
●
Pull up the pipe
portion of pipe-support by hand.
after bending
downward
(Please note the following matters and obtain permission from customer before installation).
WARNING
!
CAUTION
!
The Length of Indoor Unit
Connecting Cord
Qty
1
Connection
6
Figure showing the Installation of Indoor Unit.
1
above 50mm
Be sure to
2
completely
above 100mm
seal any
gap with
putty.
2
1
2
The connection of insulated drain hose.
inner diameter ø 16mm
Please use insulated drain hose for
the indoor piping (commercial product).
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
Connecting
connection.
cords, pipe
The terminals of 2 connected pipes must be covered
●
and drain
with insulator used for terminal connection. Then the
hose must be
pipes are wrapped with insulation pipe.
laid together
Connect the connecting cord after removing electrical
●
with Vinyl
cover. (Refer to "CONNECTION OF POWER CORD")
tape.
After adjustment, fi t the connecting cord and pipes
●
into the space available under the indoor unit. Use
holder to hold them tight.
Insulation pipe (must be wrapped with vinyl tape at every 120mm).
Holder can be attached at the either of 2 places.
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Please select the easier position.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
The refrigerating pipes and connecting cord
●
transform and are attached.
The end of the refrigerating pipes are at locations
●
marked with " " symbol.
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.
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(Refer to "Connection of Power Cord")
After adjustment, the connecting cord and refrigerating pipes
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are placed into the space available under the Indoor unit.
The projection of Indoor unit must hook to the mounting plate.
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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
Condensed Ditch
Bending
Openings water pond
upwards
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.)
Direction of Piping
There are 6 directions allowed, namely,
Horizontally
horizontally perpendicular to the unit,
perpendicular
vertically down from right, horizontally
to the unit
out from right and horizontally out to left.
Don't form the piping downward at the
left of the unit.
CAUTION
!
•
The installation height of indoor
unit must be 2.3m or more.
above 100mm
2,300mm or more
Plug
The indoor piping should
b e i n s u l a t e d w i t h t h e
enclosed insulation pipe. (If
the insulator is insuffi cient,
please use commersial
products).
Drain hose
Connecting cord
Pipe
! 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.
Pipe
Rubber strap tied with great force
CAUTION
!
Please fi x in the plastic core
●
after fl aring to avoid plastic
chips entering the pipes.
below
5mm
Please bend at a small
radius to form an arc
Projection
Hook
about 15cm
Protection pipe
Drain hose
Connecting cord
Connected
Holder
section
CAUTION
!
Be sure that the
drain hose is not
loosely connected
Condensed
or bend.
water pond