Hitachi RAS-50YHA3 Installation Manual

FOR SERVICE PERSONNEL ONLY
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
Indoor Unit Outdoor Unit
RAS-50YHA3 RAC-50YHA3
Refrigerant pipe size (outer diameter): Narrow pipe, Liquid (ø6.35mm) ; Wide pipe, Gas (ø12.70mm)

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.
!
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.
Observe the rules and regulations of the electrical installation and the methods described in the installation manual when
●
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
●
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 R410A. Otherwise, this may result in broken copper pipes or faults.
●
When installing or removing an air conditioner, only specifi ed refrigerant (R410A) shall be allowed, do not allow air or moisture
●
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.
After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas
●
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
●
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.
The external switch shall be incorporated to completely disconnect from power supply. It should disconnect all poles, and a
contact separation of at least 3mm must be present.
Do not install the unit near a location where there is fl ammable gas. The outdoor unit may catch fi re if
●
fl ammable gas leaks around it.
Do not install the indoor unit in a machine shop or kitchen where vapor from oil or its mist fl ows to the indoor unit. The oil
●
will deposit on the heat exchanger, thereby reducing the indoor unit performance and may deform and in the worst case,
break the plastic parts of the indoor unit.
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.
●
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. Therefore the hanger 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 hanger.
●
Procedures of Installation and Precautions
Procedures to fi x the hanger.
●
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.
< >
IA819: B
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
+ –
Screwdriver Measuring Tape
● ●
● Saw ● Pipe Cutter ● Hexagonal Wrench Key (
● Power Drill (ø 65mm ~ ø 80mm) ●
● Pliers or Wrench ● Torque Wrench
Pump Adaptor ● Flare Tool ● Gas Leakage Detector
● Manifold Valve ● Charge Hose ● Reammer
WARNING
CAUTION
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 hanger.
●
The projection at the lower part of the Indoor unit is hooked onto the hanger.
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HOW TO REMOVE INDOOR UNIT FROM HANGER
Pull down PULL section on the bottom of indoor
●
unit and pull it towards you, then claws are
released from hanger. (Indicated by 2 arrows
in the drawing on the right.)
When bottom face of indoor unit cannot be
●
pulled due to obstacles, etc. Remove front cover,
insert screw driver into circle hole, pull claws
down and pull indoor unit towards you.
Please check how to remove and attach front
●
cover in this instruction manual.
3. Fix the hanger on wall
with 4.1 x 32 screw
HORIZONTAL PIPING
(As shown in fi 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
●
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).
WARNING
! CAUTION
!
Be sure that the wire is not
HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
in contact with any metal
in the wall. Please use
During horizontal or downward piping, use a knife to cut
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.
Unless it seals completely,
any air with high humidity
flows from outdoor and
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.
!
● No nearby heat source and no obstruction near the air outlet is
allowed.
● The clearance distances from top, right and left are specifi ed in
Knife
● fi gure below.
The location must be convenient for water drainage and pipe
4mm) ●
connection with the Outdoor unit.
Vacuum Pump
● To avoid interference from noise please place the unit and its
● Vacuum
remote controller at least 1m from the radio, television and inverter
type fl uorescent lamp.
● File
● 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. Item
Hanger
➀
Screw for Hanger
➁
( 4 . 1 x 3 2 )
Holder for Remote
Controller
➂
AAA Size Battery
➃
Screw for holder of
Remote Controller
➄
( 3 . 1 x 1 6 )
Remote Controller
➅
Purifying Filter
➆
Names of Outdoor Components
No. Item
Bush Bush
➇
Drain Pipe
➈
Bush
➉
CAUTION
!
Please pull the lower part of
the Indoor unit outwards to
check if the unit is hooked
onto the hanger. Improper
i n s t a l l a t i o n m a y c a u s e
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).
WARNING
● The Outdoor unit must be mounted at a location which can support
heavy weight. Otherwise, noise and vibration will increase.
CAUTION
● 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, front and back
are specifi ed 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 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 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 the fan motor.
Do not install the outdoor unit in a place where small animals
●
Direction of Piping may build their nests. If small animal goes inside the unit and
Qty
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 clean.
1
Figure showing the Installation
of Indoor and Outdoor Unit.
T h e r e a r e 6 d i r e c t i o n s
6
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right and
Be sure to
1 horizontally out to left. completely
seal any
gap with
putty.
Dimension of Mounting Stand
of the Outdoor unit
2
(unit : mm)
2
1
2
Qty
3
1
1
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. Use
holder to hold them tight.
● Holder can be attached at the either of 2 places.
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 hanger. 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.
●
(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 hanger.
●
Heat insulation pipe
Pull this to the front
Connecting
during the connection
cord
of refrigerating pipes
Refrigerating pipe to ease task.
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 fl 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 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 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
●
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 plastic
chips entering the pipes.
CAUTION
!
Be sure that the
drain hose is not
loosely connected
or bend.