Hitachi RAK-70PPA Installation Manual

FOR SERVICE PERSONNEL ONLY
SPLIT UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit Outdoor Unit
RAK-70PPA RAC-70WPA

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 qualiÀ ed technician to install your unit. Water leakage, short circuit or À 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
cause water leakage, electric shock and À 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 speciÀ 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 À re.
Please use the speciÀ ed components for installation work. Otherwise, the units may collapse or water leakage, electric shock
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and À re may occur.
Be sure to use the speciÀ ed piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
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When installing or removing an air conditioner, do not allow air or moisture to remain in the refrigeration cycle. Otherwise,
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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 À re, a poisonous
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 À re in the fan-driven heater, space heater, etc., a poisonous gas may occur.
● Unauthorized modiÀ cations to the air conditioner may be dangerous. If a breakdown occurs please call a qualiÀ ed air
conditioner technician or electrician. Improper repairs may result in water leakage, electric shock and À re, etc.
● A circuit breaker or fuse (30A time delay) must be installed. Without a circuit breaker or fuse the danger of electric shock
exists.
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 Á ammable gas. The outdoor unit may
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catch À re if Á ammable gas leaks around it.
Please ensure smooth Á 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.
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 À xed horizontally or slightly tilted towards the
side of drain hose. Otherwise, condensed water may overÁ 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 À 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 À x the holder of remote control.
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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 80mm hole on
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wall which is slightly tilted
towards the outdoor side.
Drill the wall at a small
angle.
Cut the protection pipe
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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.
< >
IA926: 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
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Saw ø 65mm Power Drill Allen Key (
● ● ●
Wrench (14, 17, 19, 22mm)
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Gas Leakage Detector Pipe Cutter
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Plastic Tape Pliers Flare Tool
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WARNING
CAUTION
2 Installation of the Indoor Unit
DIRECTLY BACKWARD AND DOWNWARD PIPING
Preparation
Connect connecting cord.
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● Pull out the pipe, connecting cord and drain hose.
● Arrange a drain hose in lowest part of a wall hole.
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.
HOW TO REMOVE INDOOR UNIT FROM HANGER
Push up PUSH section on the bottom of indoor
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unit, then claws are released from hanger.
(Indicated by 2 arrows in the drawing on the
right.)
3. Fix the mounting plate on
wall with 4.1 x 32 screw
HORIZONTAL PIPING
(As shown in À gure below)
Preparation
Change of Drain Hose and Installation Procedures.
Exchange the location of drain hose and drain cap during horizontal piping as shown in
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À 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).
WARNING
CAUTION
Be sure that the wire is not
in contact with any metal Horizontal & Downward Piping – Making Openings
in the wall. Please use
During horizontal or downward piping, use a knife to cut
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the protection pipe as wire
passing through the hollow openings as shown in À gure. Then smoothen the edges of
part of the wall so as to
openings with a À le.
prevent the possibility of
damaged by mouse.
Unless it seals completely,
any air with high humidity
flows from outdoor and
any dew may drop.
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
allowed.
● The clearance distances from top, right and left are speciÀ ed in
À gure below.
Knife
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● The location must be convenient for water drainage and pipe
4mm)
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 Á 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
Screw for Mounting Plate
6
2
( 4 . 1 x 3 2 )
Remote Controller Holder
1
3
AAA Size Battery
4 2
Screw for Remote
Controller Holder
2
5
Remote Controller
6
1
Air Purifying Filter
7
2
Names of Outdoor Components
No. Item Qty
Bush
1
8
Bush
3
9
Drain Pipe
10 1
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.
Condensed water may leak out if not inserted properly.
● Turn the piping while holding down the lower
portion of pipe-support by hand.
(Please note the following matters and obtain permission from customer before installation).
● The Outdoor unit must be mounted at a location which can sup-
port 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 speciÀ ed in
À 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
the neighbourhood.
● Do not install at a location where there is Á ammable gas, steam, oil and
smoke.
● The location must be convenient for water drainage.
● Place the Outdoor unit and its connecting cord at least 1m away from
the 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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the fan motor.
Figure showing the Installation of
Indoor and Outdoor Unit
Direction of Piping
T h e r e a r e 6 d i r e c t i o n s
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right and
horizontally out to left.
Dimension of Mounting Stand
of the Outdoor unit
(unit : mm)
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
The refrigerating pipes should be adjusted to À t
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into the hole on the wall and then ready for further
connection.
The terminals of 2 connected pipes must be covered
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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, À t the connecting cord and pipes
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into the space available under the indoor unit. Use
holder to hold them tight.
Layout of pipe
Layout of pipe
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
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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
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
are placed into the space available under the Indoor unit. Use
holder to hold them tight.
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
of refrigerating pipes
Connecting
cord to ease task.
Refrigerating pipe
3 Installation of Drain Hose
You are free to choose the side (left or right) for the installation of drain
hose. Please ensure the smooth Á ow of condensed water of the Indoor
CAUTION
unit during installation. (Carelessness may result in water leakage.)
WARNING
CAUTION
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).
● The difference in height
between the indoor and
outdoor unit should be
kept max 20m.
● 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).
CAUTION
● The rubber strap used for
À xing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
CAUTION
Please À x in the plastic core
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after Á aring to avoid plastic
chips entering the pipes.
CAUTION
Be sure that the
drain hose is not
loosely connected
or bend.