Hitachi RAS-18GH4 Installation Manual

FOR SERVICE PERSONNEL ONLY
SPLIT UNIT AIR CONDITIONER

INSTALLATION MANUAL

Indoor Unit Outdoor Unit
RAS-18GH4 RAC-18GH4

SAFETY PRECAUTION

G Read the safety precautions carefully before operating the unit.
G 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.
!
G 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.
G Please observe the instructions stated in the installation manual during the process of installation. Improper installation may
cause water leakage, electric shock and fire.
G 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.
G 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.
G Be sure to use the specified 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 fire.
G Please use the specified components for installation work. Otherwise, the units may collapse or water leakage, electric shock
and fire may occur.
G Be sure to use the specified piping set for R410A. Otherwise, this may result in broken copper pipes or faults.
G When installing or removing an air conditioner, only specified 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.
G 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.
G 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.
G 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.
!
G A circuit breaker or fuse (20A 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.
G 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.
G Please ensure smooth flow of water when installing the drain hose.
G 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.
G
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
G Please use hidden beams in the wall to hold the hanger.
External dimension of
indoor unit
180mm
200mm
ø 65mm 80mm 180mm
1030mm Drain Hose
Please use more
than 4 screws.
Procedures of Installation and Precautions
Procedures to fix the hanger.
G
1. Drill holes on wall. 2. Push plug into the holes.
(As shown below) (As shown below)
Wall
1 Hanger
Plug
2 Screw
32mm
Wall
G Procedures to fix 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 Screw
20mm
Plug
Wall Penetration and Installation of Protection Pipe
Drill a ø 65mm hole on
G
wall which is slightly tilted
Indoor Outdoor
towards the outdoor side.
Seal with
Drill the wall at a small
putty
Seal with
angle. putty
Cut the protection pipe
G
according to the wall
thickness.
G Empty gap in the sleeve
of protection pipe should
WALL
Protection
be completely sealed
pipe
with putty to avoid Sleeve of
protection
dripping of rain water into
pipe
the room.
< >
I548: A
G Carefully read through the procedures of proper
installation before starting installation work.
G The sales agent should inform customers regarding
the correct operation of installation.
Tools Needed For Installation Work
G + – Screwdriver G Measuring Tape
G Saw G ø 65mm Power Drill G Hexagonal Wrench
Key ( 4mm) G Wrench (14, 17, 24mm)
Leakage Detector G Pipe Cutter
Tape G Pliers G Flare Tool
WARNING
CAUTION
2 Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
Preparation
G Connect connecting cord.
Pull out the pipe, connecting cord and drain hose.
G
Installation
The upper part of the Indoor unit is hanged on the hanger.
G
G The projection at the lower part of the Indoor unit is hooked onto the hanger.
Hanger
Protection
Pipe
Drain Hose
Level
Hanger
HOW TO REMOVE INDOOR UNIT FROM HANGER
Pull down PULL section on the bottom of indoor
G
unit and pull it towards you, then claws are
Hole for
Line
released from hanger. (Indicated by 2 arrows in
pipe
Mark
Screw for Hanger Weight
the drawing on the right.)
When bottom face of indoor unit cannot be
G
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
G
cover in this instruction manual.
3. Fix the hanger on wall
with 4.1 x 32 screw
HORIZONTAL PIPING
(As shown in figure below)
Preparation
Ceiling
above 50mm
Change of Drain Hose and Installation Procedures.
Exchange the location of drain hose and drain cap during horizontal piping as shown in
G
figure 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.
G
(This is an easier way to remove the drain cap).
4.1 x 32 Screw
! WARNING
! CAUTION
2 ~ 5mm
Be sure that the wire is not
in contact with any metal HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
in the wall. Please use the
During horizontal or downward piping, use a knife to cut
protection pipe as wire G
passing through the hollow openings as shown in figure. Then smoothen the edges of
part of the wall so as to
openings with a file.
prevent the possibility of
Pipe
damaged by mouse.
support
Unless it seals completely,
any air with high humidity
flows from outdoor and
any dew may drop.
THE CHOICE OF MOUNTING SITE
G
The unit should be mounted at stable, non-vibratory location which
can provide full support to the unit.
G
No nearby heat source and no obstruction near the air outlet is
allowed.
G
The clearance distances from top, right and left are specified in
figure below.
G Knife G
The location must be convenient for water drainage and pipe
connection with the Outdoor unit.
G
To avoid interference from noise please place the unit and its
G Gas
remote controller at least 1m from the radio, television and inverter
G Putty G Vinyl
type fluorescent lamp.
G
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.
G
The installation height of indoor unit must be 2.3m or more in a
non public area.
Names of Indoor Components
No. Item
Hanger
1
Screw for Hanger
2
( 4 . 1 x 3 2 )
Holder for Remote
3
Controller
AAA Size Battery
4
Screw for holder of
5
Remote Controller
( 3 . 1 x 1 6 )
Insulation pipe
6
Remote Controller
7
Purifying Filter
8
Names of Outdoor Components
No. Item
Bush
9
Drain Pipe
0
Bush
!
Connecting cords,
pipe and drain hose
must be tied together
with Vinyl tape.
CAUTION
!
Hanger
Lift the body
Please pull the lower part of
Refrigerating
of the unit
Pipe
the Indoor unit outwards to
upwards and
Projection
check if the unit is hooked
then force
onto the hanger. Improper
it downwards.
installation
Connecting
Cord vibration and noise.
Hook
Circle hole
Screw driver
2
Drain cap Drain hose
Drain cap
Drain hose
Please insert
Please insert
until here
until here
Condensed water may leak out if not inserted properly.
G Turn the piping while holding down the lower
Pull up the pipe after
portion of pipe-support by hand.
bending downward
(Please note the following matters and obtain permission from customer before installation).
WARNING
!
G
The Outdoor unit must be mounted at a location which can sup-
port heavy weight. Otherwise, noise and vibration will increase.
! CAUTION
G
Do not expose the unit under direct sunshine or rain. Besides, ventilation
must be good and clear of obstruction.
G
The air blown out of the unit should not point directly to animals or plants.
G
The clearances of the unit from top, left, right and front are specified in
figure below. At least 3 of the above sides must be open air.
G
Be sure that the hot air blown out of the unit and noise do not disturb the
neighbourhood.
G
Do not install at a location where there is flammable gas, steam, oil and
smoke.
G
The location must be convenient for water drainage.
G
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.
G
Do not install outdoor unit facing strong wind direction. It may damage the
fan motor.
Figure showing the Installation
The Length of Indoor Unit
Connecting Cord
of Indoor and Outdoor Unit.
Qty
0.9m
1.6m
1
! CAUTION
Direction of Piping
In case the pipe length is more than 8m, add refrigerant R410A
6
at 15 gram per every meter exceeds. However, pipe length shall
Horizontally
not exceed 15m.
perpendicular
to the unit
Connection
1
There are 4 directions
Be sure to
allowed, namely, horizontally
completely
seal any
perpendicular to the unit,
gap with
vertically down from right,
putty.
horizontally out from right and
2
horizontally out to left.
Don't form the piping
downward at the left of the unit.
2
Dimension of Mounting Stand
of the Outdoor unit
(unit : mm)
mounting stand
57
1
12
35
508
198
1
1
above 200mm
( above 50mm when )
installed on the
Qty
ceiling of balcony
3
above 100mm
1
above 700mm
1
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
G The refrigerating pipes should be adjusted to fit into
the hole on the wall and then ready for further
connection.
G 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
G
cover. (Refer to "CONNECTION OF POWER CORD")
G After adjustment, fit the connecting cord and pipes
into the space available under the indoor unit. Use
holder to hold them tight.
Holder
Insulation pipe (must be wrapped with
may cause
vinyl tape at every 120mm).
Holder can be attached at the either of 2 places.
G
Please select the easier position.
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
G The refrigerating pipes and connecting cord
transform and are attached.
The end of the refrigerating pipes are at locations
G
marked with " " symbol.
Claw of indoor unit
1
0.65m
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.
G Place the drain hose through the hole on the wall.
G Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
Connect the connecting cord after removing electrical cover.
G
(Refer to "Connection of Power Cord")
G 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.
G
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
Openings
Bending Condensed
upwards 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
CAUTION
unit during installation. (Carelessness may result in water leakage.)
WARNING
!
CAUTION
!
! CAUTION
•
The installation height
of indoor unit must be
2.3m or more in a non
public area.
above 50mm
2
1
above 100mm
above 100mm
2,300mm or more
7
4
The indoor piping should be
5
insulated with the enclosed
3
insulation pipe. (If the
Plug
insulator is insufficient,
please use commersial
products).
G The difference in height
between the indoor and
outdoor unit should be
kept max 5m.
G The connecting pipe, no
matter big or small,
above 100mm
should all be insulated
give clearance as
with insulation pipe and
wide as possible then wrapped with vinyl
tape. (The insulator will
deteriorate if it is not
wrapped with tape).
The connection of insulated
above 200mm
drain hose.
inner diameter ø 16mm
Please use insulated drain
hose for the indoor piping
(commercial product).
Drain hose
Pipe
Connecting cord
CAUTION
!
The rubber strap used for
G
fixing 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
G Please fix in the plastic core
after flaring to avoid plastic
chips entering the pipes.
below
5mm
Please bend at a small
radius to form an arc
Temporary stand
Projection
about 15cm
Protection
pipe
Drain hose
Connected
Connecting cord section
Holder
! CAUTION
Be sure that the
drain hose is not
loosely connected
Condensed
Ditch
water pond
or bend.