Hitachi RAS-10GH5 Installation Manual

FOR SERVICE PERSONNEL ONLY
Indoor Unit / Outdoor Unit
5 / RAC-10GH
RAS-10GH
5 /
RAS-1 GH 4 RAC-1 GH 4

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.
Make sure to connect earth line.
This sign in the figures indicates prohibition.
Be sure that the unit operates in proper condition after installation. Explain to customer the proper operation and maintenance of
the unit as described in the user' s guide. Ask a customer to keep this installation manual together with the instruction manual.
• 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 installation 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 cables which are approved official in your country. Be sure to use the specified circuit. A short circuit and
fire may occur due to the use of low quality wire or improper work.
• Be sure to use the specified cables 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 to prevent the external force is being applied to the connection section of the
terminal base. Improper insertion and loose contact may cause over-heating and fire.
• Please use the specified components for installation work. Otherwise, the unit may collapse or water leakage, electric shock, fire or
stronger vibration may occur.
• Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
• When installing or transferring an air conditioner to another location, make sure that air other than the specified refrigerant (R410A)
does not enter the refrigeration cycle. If other air should enter, the pressure level of the refrigeration cycle may increase abnormally
which could result in a rupture and injury.
• Be sure to ventilate fully if a refrigerant gas leak while at work. If the refrigerant gas comes into contact with fire, 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 fire in the fan-driven heater, space heater, etc., a poisonous gas may occur.
• Unauthorized modifications to the air conditioner may be dangerous. If a breakdown occurs please call a qualified air conditioner
technician or electrician. Improper repairs may result in water leakage, electric shock and fire, etc.
• Be sure to connect the earth line from the power supply wire to the outdoor unit and between
the outdoor and indoor unit. Do not connect the earth line to the gas tube, water pipe, lighting rod or the earth line of the
telephone unit. Improper earthing may cause electric shocks.
• When finishing the refrigerant collection (pumping down), stop the compressor and then remove the coolant pipe.
If you remove the refrigerant pipe while the compressor is operating and the service valve is released, air is sucked and a
pressure in the freezing cycle system will build up steeply, causing an explosion or injury.
• When installing the unit, be sure to install the refrigerant pipe before starting the compressor.
If the refrigerant pipe is not installed and the compressor is operated with the service valve released, air is sucked and the
pressure level of the refrigeration cycle may increase abnormally which could result in a rupture and injury.
• A circuit breaker must be installed in the house distribution box for the direct connected power supply cables to the
outdoor unit. In case of other installations a main switch with a contact gap or more than 3mm has to be installed.
Without a circuit breaker, the danger of electric shock 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. Improper installing may wet your funiture.
• An IEC approved power cord should be used. Power cord type: NYM.
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 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 hanger.
Visible outline of the
450mm
outdoor unit
400mm
316mm
125mm
41mm
45mm
390mm
ø65mm 65mm
Drain Hose 530mm
780mm
Level 2 Screw for Hanger
1 Hanger
Line
Weight
Wall hole
Procedures of Installation and Precautions
• Procedures to fix the hanger.
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
Wall
1 Hanger
2 Screw
32mm
Wall
Wall Penetration and Installation of Protection Pipe
• Drill a ø65mm hole on wall which is
Indoor
slightly tilted towards the outdoor side.
Drill the wall at a small angle.
Seal with
• Cut the protection pipe according to the
putty
wall thickness.
• Empty gap in the sleeve of protection
pipe should be completely sealed with
putty to avoid dripping of rain water into
Protection
the room.
pipe
• Please ensure smooth flow of water
when installing the drain hose. Improper
installing may wet your funiture.
• An IEC approved power cord should be
used. Power cord type: NYM.
5
5
WARNING
CAUTION
2 Installation Of The Indoor Unit
Cutting Low Cover bush
• While installing the pipe from the right, left or
bottom side, use a knife to cut openings as
shown in figure. Then smoothen the edges of
openings with a file.
¡ PIPING FROM THE RIGHT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
Preparation
• Connect connecting cord.
20mm
125mm
• Pull out the pipe, connecting cord and drain hose.
44mm
Installation
Wall hole
• Insert the pipe through the wall hole.
¡ The upper part of the Indoor unit is hanged on the
42mm
45mm
hanger.
ø65mm ™ The projection at the lower part of the Indoor unit is
10mm
Drain Hose
hooked onto the hanger.
1 Hanger
Screw the hanger at the
positions possibly near the
upper and lower hooks where
the indoor unit is hung. Use 4 or
Protection
more screws to fix the hanger.
Drain Hose Connecting Cord
Pipe
™ PIPING FROM THE LEFT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
Preparation
Changed of Drain Hose and Installation Procedures.
• Exchange the location of drain hose and drain cap while installing the pipe from the left side as
shown in below. Be sure to plug in the drain hose until the insulating material folds upon itself.
3. Fix the hanger on wall with
• Please use pliers to pull out the drain cap.
4.1 x 32 screw.
(This is an easier way to remove the drain
(As shown in figure below)
cap).
Plug
Ceiling
(Procure
locally)
above 50mm
4.1 x 32 screw
Outdoor
WARNING
2-5mm
Be sure that the wire is not
Seal with
in contact with any metal in
putty • The rubber strap used for fixing the insulator
the wall. Please use the
protection pipe as wire
passing through the hollow
part of the wall so as to
• Please pull the lower part of the Indoor unit
prevent the possibility of
WALL
damaged by mouse.
Sleeve of
Unless it seals completely,
protection
any air with high humidity
pipe
flows from outdoor and any • Transform the piping while holding down the
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
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 remote controller at least 1m from the radio and
television.
• 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 the indoor unit must be at least
2300mm or more from the floor.
Names of Indoor Components
No. Component's Name
Hanger
1
Screw for Hanger
2
( Φ 4 . 1 x 3 2 )
AAA Size Battery
3
Remote Controller
4
Drain Pipe
5
Dimension of Mounting
Stand of the outdoor unit
(unit : mm)
500
698
(10GH5)
500
750
(14GH5)
Cable
1 Hanger
¡
Lift the body
Refrigerating
of the unit
Pipe
upwards and
then force it
downwards.
™
Projection
Insufficient insert may
result in water leakage.
Drain cap Drain Hose
• Remove low cover
• Push the pipe deeply until the insulating
• Insert drain cap up to the
section of the drain hose end gets over the
location securely till the
rib at the indoor unit side.
cap stops.
Drain cap
CAUTION
should not be tied with great force. Otherwise,
this will damage heat insulation and causes
Pipe
water condensation.
outwards to check if the unit is hooked onto
the hanger. Improper installation may cause
vibration and noise.
Pipe
lower portion of pipe-support by hand.
support
(Please note the following matters and obtain permission from customer before installation.)
WARNING
• The Outdoor unit must be mounted at a location which can
CAUTION
• Do not expose the unit under direct sunshine or rain.
• The air blown out of the unit should not point directly to
• The clearances of the unit from top, left, right and front are
• The installation height should be at least 2,300 mm or more
• Be sure that the hot air blown out of the unit and noise do
• Do not install at a location where there is flammable gas,
• The location must be convenient for water drainage.
• Place the Outdoor unit and its connecting cord at least 1 m
The Length of Indoor Unit
Qty
Connecting Cord
above above
1 0.9 m 1.6 m
When the power is
6
supplied from the
indoor unit, pull the
power cable from the
cable drawer at the
2
right or left side of
Be sure to
the indoor unit.
completely
Cable drawer (right side)
seal any gap
with putty.
1
Direction of Piping
Backward piping
from left
1
Connection
There are 6 directions allowed,
namely, backward piping,
backward piping from left,
horizontally piping from right,
horizontally piping from left,
vertically down from right, vertically
down from left.
45
50
above 200mm
The clearances of the
unit from top, left, right
and front are specified
in figure below. At least
three of the above sides
must be open air.
above 100mm
above 400mm
INSTALLATION AFTER CONNECTION OF REFRIGERATING PIPES
• The refrigerating pipe 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. Then the
Openings
pipes are wrapped with insulation pipe.
• Connect the connecting cord after removing low
cover.
(Refer to "CONNECTION OF POWER CORD")
Openings
• After adjustment, fit the connecting cord and pipes
into the space available under the 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
Connecting cords, pipe and
THE INSTALLATION OF INDOOR UNIT
drain hose must be laid
together with Vinyl tape.
Preparation To Install Refrigerating Pipes
Wall hole
• The refrigerating pipes and connecting cord
transform and are attached.
Pipe
Drain hose
Drain layout of
backward piping
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 low 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.
CAUTION
Wall hole
Refrigerating
Connecting
Pipe
pipe
cord
Drain hose
Cable
Heat
insulation pipe
Drain layout of backward piping from left
3 Heat Insulation and Finish of the Piping
Rib at the Indoor unit
• The connected terminals should be completed sealed
with heat insulator and then tied up with rubber strap.
Insulating
• Do not tie the terminals with the tape too tight.
section of the
If any clearance or over-tightening may cause
drain hose end
condensation.
• Please tie the pipe and power line together with vinyl
tape as shown in the figure showing the installation of
Indoor and Outdoor units.
• To enhance the heat insulation and to prevent water
condensation, please cover the outdoor part of the
drain hose and pipe with insulation pipe.
• Completely seal any gap with putty.
4 Installation of Drain Hose
Rubber strap tied
with great force
Ditch
Bending upwards Condensed water
pond
You are free to choose the side (left or right) for the installation of drain
hose. Please ensure the smooth flow of condensed water of the Indoor
Transform after
CAUTION
bending downward.
unit during installation. (Careless may result in water leakage.)
WARNING
support heavy weight. Otherwise, noise and vibration will
increase.
CAUTION
Besides, ventilation must be good and clear of obstruction.
animals or plants.
specified in figure below. At least three of the above sides
must be open air.
from the floor.
not disturb the neighbourhood.
steam, oil and smoke.
away from the antenna or signal line of television, radio or
telephone. This is to avoid noise interference.
Figure showing the Installation
of Indoor and Outdoor Unit.
above
50mm
2
1
above 250mm
above 100mm
2,300 mm or more
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the insulator is
insufficient, please use commercial
products.)
• The refrigerating machine oil is
easily affected by moisture. Use
caution to prevent water from
entering the cycle.
• The difference in height between
the indoor and outdoor unit
should be kept below 5m.
• The connecting pipe, no matter
above 150mm
big or small, should all be
give clearance
insulated with insulation pipe and
as wide as
then wrapped with vinyl tape.
possible
(The insulator will deteriorate if
it is not wrapped with tape).
above
The connection of insulated drain
200mm
hose.
Inner diameter 16mm
Please use insulated drain hose for
the indoor piping (commercial
product)
Drain hose
Connecting
cord
Pipe
Holder
Insulation pipe (must be wrapped with
vinyl tape at every 120 mm)
The end of the refrigerating pipes are at
"▼ ▼
locations marked with " symbol.
0.85m
Please bend at a small
below
radius to form an arc
5mm
Projection
Hook
about 15cm
Protection
pipe
Drain hose
Pull this to the front during the
connection of refrigerating
pipe to ease task.
Connecting cord
Connected
section
Holder
Insulation material for pipe
connection
Sleeve of
protection pipe
Putty
Putty
CAUTION
Be sure that the drain hose is
Condensed
not loosely connected bend or
water pond
proper condition like left figure.