Hitachi RAS-25CNH2/RAC-25CNH2

THE CHOICE OF MOUNTING SITE (Please note the following matters and obtain permission from customer before installation).
Indoor Unit
Tools Needed For Installation Work
●
+ – Screwdriver ● Measuring Tape ● Knife
● Saw ● ø 65mm Power Drill ● Hexagonal Wrench
● Wrench (14, 17, 19, 22mm)
Key (
4mm)
● Gas Leakage Detector
● Pipe Cutter
● Vinyl Tape
● Pliers
● Flare Tool
Outdoor Unit
RAS-25CNH2
RAC-25CNH2
●
●
●
●
●
●
SAFETY PRECAUTION
●
!
CAUTION
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.
Names of Indoor Components
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.
No.
Item
! 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.
●
●
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.
●
●
(4.1x32)
●
Do not mix any coolant other than R-22 into the cooling circulation path when mounting or shifting the unit. If it
is mixed with air, the high pressure in the circulation path will rise and this may result in broken copper pipes or
faults.
●
Be sure to
completely
seal any
gap with
putty.
AAA Size Battery
2
Screw for holder of
Remote Controller
5
Connection
2
(3.1x16)
6
Holder
7
Insulation pipe
Horizontally
perpendicular
to the unit
1
1
There are 3 directions
allowed, namely, horizontally
perpendicular to the unit,
vertically down from right,
horizontally out from right.
Don’t form the piping
downward at the left of the unit.
(unit : mm)
8
12
1
35
●
This is a stationary class 1 appliance. The electrical installation should be installed fixed by using IEC approved
power cables. In the installation a main switch must be used with an opened contact gap of more than 3mm.
Piping shall be suitable supported with a maximum spacing of 1m between the supports.
●
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.
100
1
above 100mm
above 100mm
6 Used in horizontal piping
4
5
The indoor piping should be
insulated with the enclosed
insulation pipe. (If the
insulator is insufficient,
please use commersial
products).
3
Plug
●
above 200mm
above 50mm when
installed on the
ceiling of balcony
Purifying Filter
0
●
●
9
CAUTION
!
500
Drain Pipe
1
❈ above 100mm
●
❈ give clearance
as wide as possible
Seal
!
1
above 100mm
@
inner diameter ø 16mm
Bush
❈ above 300mm
2
above 200mm
Please use insulated drain
hose for the indoor piping
(commercial product).
Installation of Hanger, Wall Penetration and Installation of Protection Pipe
2
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.
●
●
●
11mm
Please use hidden beams in the wall to hold the hanger.
External Dimension
of Indoor unit
●
●
20mm
798mm
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.
Refrigerating
Pipe
95mm
80mm
Connecting cords,
pipe and drain hose
must be tied together
with Vinyl tape.
●
●
Protection
Pipe Drain Hose
Level
! CAUTION
Hanger
Lift the body
of the unit
upwards and
then force
it downwards.
Projection
Connecting
Cord
Please pull the lower part
of the indoor unit
outwards to check if the
unit is hooked onto the
hanger.
Improper
installation may cause
vibration and noise.
Hook
HORIZONTAL PIPING
Hanger
Hole for
pipe
Line
Weight
Mark
●
● Procedures to fix the hanger.
1. Drill holes on wall.
2. Push plug into the holes.
(As shown below)
(As shown below)
ø4.8mm
2 Screw
Drain cap
Drain hose
Wall
● 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)
Drain cap
●
●
<I141: C >
Rubber strap tied with great force
●
! CAUTION
Refrigerating pipes and connecting cord must be
tied together.
The front part of the refrigerating pipes are
at locations marked with “ ” symbol.
●
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
Drain hose
Heat insulation
pipe
●
3 Remote
Control
Holder
Remove the cap for drain hose installation
Drain cap
5 Screw
Plug
! CAUTION
Pull this to the front
during the connection
of refrigerating pipes
to ease task.
Refrigerating pipes
Connecting cord
Drain hose
Please insert
until here
Please insert
until here
Wall Penetration and Installation of Protection Pipe
●
Pipe
THE CONNECTION OF REFRIGERATING PIPE DURING THE
INSTALLATION OF INDOOR UNIT
Wall
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.
The rubber strap used for
fixing the insulator should
not be tied with great force.
Otherwise, this will damage
heat insulation and causes
water condensation.
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.
● Insulate the connecting portion of refrigerating pipe with
insulator.
● Wrap the refrigerating pipes with insulation pipe.
● Connect the connecting cord.
● After adjustment, the connecting cord and refrigerating pipes
are placed into the space available under the cooling unit.
● The projection of indoor unit must hook to the hanger.
4.1 x 32 Screw
●
●
Installation
Plug
19mm
! CAUTION
Insulation pipe (must be wrapped with
vinyl tape at every 120mm).
0.85m
3. Fix the hanger on wall
with 4.1 x 32 screw
(As shown in figure below)
above 50mm
1 Hanger
Connecting cord
Holder 6
Pipe
Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain cap).
Ceiling
Wall
Pipe
Preparation To Install Refrigerating Pipes
Change of Drain Hose and Installation Procedures.
● Exchange the location of drain hose and drain cap during horizontal piping as shown
in figure below. Be sure to plug in the drain hose until the insulating material folds upon
itself.
Procedures of Installation and Precautions
ø4.4mm
INDOOR UNIT
Screw for Hanger
Please use more
than 4 screws.
Drain hose
Insulation pipe 7
Preparation
32mm
The refrigerating pipes 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
pipes are wrapped with insulation pipe.
Connect the connecting cord.
After adjustment, fit the connecting cord and pipes
into the space available under the indoor unit. Use
holder to hold them tight.
Hanger
42.5mm
265mm
42.5mm
ø65mm
Connect connecting cord.
Pull out the pipe, connecting cord and
drain hose.
Installation
20mm
62mm
●
Preparation
Direct Mounting On The Wall
●
INSTALLATION OF REFRIGERATING PIPES AFTER CONNECTION
Installation of the Indoor Unit
VERTICALLY DOWNWARD PIPING
! CAUTION
●
The difference in height
between the indoor and
outdoor unit should be
kept below 5m.
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 ensure smooth flow of water when installing the drain hose.
1
2
1
8
35
mounting stand
8
above 50mm
Dimension of Mounting Stand
of the outdoor unit
225
Please use the specified components for installation work. Otherwise, the units may collapse or water leakage,
electric shock and fire may occur.
●
Cut away shaded
portion, and finish
the edge of the
opening so that
there is no burr.
20
Remote Controller
●
●
6
1
4
Be sure to use approved cables also for the connection indoor/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.
●
Figure showing the Installation
of Indoor and Outdoor Unit.
Direction of Piping
Observe the rules and regulations of the electrical installation and the methods described in the installation manual
when dealing with the electrical work. Use only power cables which are approved from the Authorities of your
country. A short circuit and fire may occur due to the use of low quality wire or improper work.
●
CAUTION
about 1.6m
Holder for Remote
Controller
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 instructions stated in the installation manual during the process of installation. Improper
installation may cause water leakage, electric shock and fire.
!
Screw for Hanger
3
●
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 specified
in figure 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 flammable gas, steam,
oil and smoke.
The location must be convenient for water drainage.
Place the outdoor unit and its connection wire at least 1m away
from the antenna or signal line of television, radio or telephone.
This is to avoid noise interference.
●
1
2
WARNING
!
about
0.9m
1
●
The Length of Indoor Unit
Connecting Cord
Qty
Hanger
! WARNING ........ Incorrect methods of installation may cause death or serious injury.
WARNING
The outdoor unit must be mounted at a location which can support heavy weight. Otherwise, noise and vibration will increase.
Maximum pipe length 8m
HITACHI SPLIT-UNIT AIR CONDITIONER
INSTALLATION MANUAL
!
●
must not bend about 0.45m
Carefully read through the procedures of proper
installation before starting installation work.
The sales agent should inform customers regarding
the correct operation of installation.
WARNING
The unit should be mounted at stable, non-vibratory location which
can provide full support to the unit.
above 300mm
●
!
●
INDOOR UNIT
●
OUTDOOR UNIT
FOR SERVICE PERSONNEL ONLY
3
Projection
Hook
about 15cm
Protection
pipe
Drain hose
Connecting cord
Connected
section
Holder
Installation of Drain Hose
Condensed water may leak out if not inserted properly.
! CAUTION
Outdoor
Indoor
2~5mm
WALL
Protection
pipe
Seal with
putty
Sleeve of
protection
pipe
! CAUTION
Be sure that the wire is not
in contact with any metal
in the wall. Please use the
protection pipe as wire
passing through the hollow
part of the wall so as to
prevent the possibility of
damaged by mouse.
HORIZONTAL & DOWNWARD PIPING – MAKING OPENINGS
●
During horizontal or downward piping, use a knife to cut
openings as shown in figure. Then smoothen the edges
of openings with a file.
Ditch
Bending
upwards
Openings
Pipe support
●
Transform after
bending downwa
Transform the piping while holding down the lower
portion of pipe-support by hand.
Condensed
water pond
Be sure that the
drain hose is not
loosely connected
or bent.
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
CAUTION unit during installation. (Carelessness may result in water leakage.)
!
1
Procedure to remove the
cover of wiring terminals
●
●
OUTDOOR UNIT
●
Remove the screw (1
piece).
Hold the projected
part at the lower left
of the cover and push
the cover upwards to
remove it.
To close the cover,
insert the upper part
of the cover into the
body of outdoor unit,
then be sure that the
hook below the cover
is plugged in before
screwing.
Please face this side (suction side)
of the unit to the wall
Hook
Please remove
the cover for
wire connection.
CONDENSED WATER DISPOSAL OF OUTDOOR UNIT
● There are holes on the base of outdoor unit for condensed water to
exhaust.
● In order for condensed water to flow to the draining part, installed the
unit on the level ground or block so that the unit is 70mm above the
ground, same as figure shown. Join the drain pipe to one hole.
70mm ABOVE
At first insert one portion of the hook to the base (Portion A), then pull
the drain pipe in the direction shown by the arrow while inserting the
hook into the base. After installation, check whether the drain pipe
cling to the base firmly.
A
BASE
DRAIN PIPE
9
●
3
Preparation of Pipe
Removal Of Air From The Pipe And Gas Leakage Inspection
Use a pipe cutter to cut the copper pipe.
Procedures of using Vacuum Pump for Air Removal
Trimming tool
1
Copper pipe
! CAUTION
●
Jagged edge will cause leakage.
Point the side to be trimmed downwards during trimming to prevent copper
chips from entering the pipe.
●
Before flaring, please put on the flare nut.
●
Die
Die
A
AIR REMOVAL
●
Mount the outdoor unit on stable ground to prevent vibration and
increase of noise level.
Decide the location for piping after sorting out the different types of
pipe available.
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
●
2
●
●
A (mm)
Imperial flaring tool
Rigid flaring tool
6.35 (1/4")
0.8 – 1.5
0 – 0.5
9.52 (3/8")
1.0 – 1.8
0 – 0.5
Pipe Connection
2
Fully tighten the “Hi” shuttle of the
manifold valve and completely unscrew
the “Lo” shuttle. Run the vacuum pump
for about 10–15 minutes, then completely
tighten the “Lo” shuttle and switch off
the vacuum pump.
3
Completely unscrew the spindle of the
service valve (at 2 places) in anticlockwise direction to allow the flow of
coolant (using Hexagonal Wrench key).
4
Remove the Charge hose and tighten
the cap of valve head. The task is then
completed.
●
Torque N.m
(kgf ● cm)
Small diameter 6.35 (1/4") 13.7 – 18.6 (140 – 190)
side
Big diameter
9.52 (3/8") 34.3 – 44.1 (350 – 450)
side
Torque
wrench
●
Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not
reach the specified capacity.
Valve head cap
19.6 – 24.5 (200 – 250)
Valve core cap
12.3 – 15.7 (125 – 160)
30mm
When power supplies to Indoor Unit
Indoor Unit
Line Cord
10mm
10mm
L
N
10mm
GRN + YEL
2.0
A, B
Connecting Cord
45mm
10mm
Outdoor
Unit
C, D
26mm
10mm
2.0
CONNECTION OF POWER CORD
C, D
30mm
Outdoor Unit
10mm
A B CD
1.6 or
Indoor
Unit
2.0
GRN + YEL
10mm
●
●
2
50mm
Strip Wires
Connecting Cord
GRN + YEL
A, B
The body of
service valve
Cap of valve head
Cap of
valve core
Hexagonal
Wrench Key
Cap of valve head
Please use gas leakage detector to check if leakage
occurs at the connection of Flare nut as shown on
the right.
If gas leakage occurs, further tighten the connection
to stop leakage.
! CAUTION
In case of removing Flare nut of a cooling unit, first remove a nut of
small diameter side, or a seal cap of big diameter side will fly out.
Brown=C
Power cannot be turned off using power
switch.
11 Seal
Always keep the switch “OFF” and put
the power switch fixing seal so that the
power cannot be turned off.
Power cord is not necessary, store
it in the lower-side space on the rear
side of indoor unit. When storing, wrap
the power plug with the vinyl bag for
the parts, etc. and seal with adhesive
tape to prevent dust or dirt.
Terminal A and B of indoor unit do not need to be connected.
When power supplied to outdoor unit, power is not turned off
by switching the power of indoor unit to “OFF”. In that case,
please cut the breaker.
Brown=D
cords
with screws
connect the
earth cord
After remove the band, place the
connecting cords and fix with screw
White=A White=B
C, D
GRN + YEL
Main
Switch
Outdoor
Unit
AC 220 - 240V
10mm
Wiring Of The Outdoor Unit
10mm
45mm
●
45mm
●
●
The naked part of the wire core should be 10 mm and the insulated part of the wire must be push into the terminal for 3 – 4 mm.
Then try to pull the individual wire to check if the contact is tight. Improper insertion may burn the terminal.
●
Be sure to use only wire specified for the use of air-conditioner.
●
Please refer to the installation manual for wire connection and the wiring technique should meet the standards of electrical
installation.
●
There is a AC voltage drop between the LN terminals if the power is on. Therefore, be sure to remove the plug from its socket.
How to Remove the Front Cover
Open the cover 1 and remove the screw.
Cover
Front Panel
4
!
WARNING
●
●
After open the Front Panel and remove the filter, release the axis by
pulling the center portion of front cover in the direction of arrow .
●
Push vertical air deflector handle to the right or left side.
●
After raise the front cover from bottom side as
cover by pull the right or left sides as .
2
4
3, release the front
●
1
1
2
3
Screw
1.
1 Insulation And Maintenance Of Pipe Connection
●
●
●
●
1
The connected terminals should be completely sealed with
heat insulator and then tied up with rubber strap.
Please tie the pipe and power line together with vinyl tape as
shown in the figure showing the installation of indoor and
outdoor units. Then fix their position with holders.
To enchance 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.
Vertical Air Deflector Handle
2
●
●
●
Wire length
Wire gauge
up to 16m
1.6mm2
up to 15m
2.5mm2
Installation Of Remote Control
The remote controller can be placed in its holder which is
fixed on wall or beam.
To operate the remote controller at its holder, please ensure
that the unit can receive signal transmitted from the controller
at the place where the holder is to be fixed. The unit will beep
when signal is received from the remote controller. The signal
transmission is weaken by the florescent light. Therefore, during
the installation of the remote control holder, please switch on
the light, even during day time, to determine the mounting
location of the holder.
up to 25m
3
●
●
●
Screw (2 pieces)
Holder for
Remote Controller
Remote
Controller
Please use a new socket. Accident may occur due to the
use of old socket because of poor contact.
Please plug in and then remove the plug for 2 – 3 times.
This is to ensure that the plug is completely plugged into
the socket.
Keep additional length for the power cord and do not render
the plug under external force as this may cause poor
contact.
Do not fix the power cord with U-shape nail.
Operation Test
●
Sleeve of
protection pipe
Power Source And Operation Test
! CAUTION
●
The controller must be hooked onto the hook at the lower
part of the holder. Push in the remote controller in the direction
as shown in figure below.
4.0mm2
Power Source
Insulation material for pipe connection
<I141: C >
●
Investigate the power supply capacity and other electrical
conditions at the installation location.
Depending on the model of room air conditioner to be installed,
request the customer to make arrangements for the necessary
electrical work etc.
The electrical work includes the wiring work up the outlet. In
localities where electrical conditions are poor, use of a voltage
regulation is recommended.
Install outlet for the room air conditioner within the reaching
range of the line cord.
IMPORTANT
●
Putty
Before installation, the power source must be checked and
necessary wiring work must be completed. To make the wiring
capacity proper, use the wire gauges list below for the leadin from a pole transformer and for the wiring from a switch
board of fuse box to the outlet in consideration of the locked
rotor current.
Connection cord
2
1
Open Front Panel, push the center down in the direction of the arrow
to insert the axis at the center of the front cover into the hook at the
outlet frame.
Fixed the screw and cover
Connection cord
is put under here
Be sure that the hooks (2 places) are
plugged in.
Otherwise, water leakage may occur and this
causes short circuit or faults.
IMPORTANT
2
●
●
Side cover
5
How to Install the Front Cover
Insert the two hooks 5 at the upper side certainly.
●
●
B C D
You may not be able to close the side cover
due to the connecting cord, under such
situation, please press against the wait of
side cover to fix it.
Checking for the electric source
and the voltage range
Front Cover
A
Please remove the side cover for wire connection.
! WARNING
5
FINAL STAGE OF INSTALLATION
●
1
To remove the
connecting wires
for the indoor unit,
please remove the
low cover panel in
front of the unit.
When power supplies to Outdoor Unit
A B CD
2
●
Detail of cutting the
connecting cord
GRN + YEL
Indoor Unit
1
Pull the cover at
and
in
the directions as shown by
arrows to remove the cover.
Strip Wires
AC 220-240V
When pumping starts, slightly loosen
the flare nut to check of air sucked in.
Then tighten the flare nut.
When power supplied to outdoor unit
70mm
ABCD
1.6 or
●
Indoor
Unit
Outdoor Unit
ABCD
C, D
30mm
Charge
hose
For wire connection of the indoor unit, you need to remove the cover under the body
of the unit and front cover.
Method to remove the low cover
A, B
Vacuum pump
Wiring Of The Indoor Unit
THIS APPLIANCE MUST BE EARTHED.
Procedures of Wiring
Hi
If the length of the copper pipe is over 5m, add 15g/m refrigerant.
12
! WARNING
Lo
Gas Leakage Inspection
Outer
diameter
of pipe
Wrench
Meter showing pressure
Adding Refrigerant
Please be careful when bending the copper pipe.
Applied frozen grease to the connection points and then screw in manually. After
that, use a torque wrench to tighten the connection.
Flare nut
When the meter reaches –101KPa (–76cmHg)
during pumping, fully tighten the shuttle.
Manifold valve
Copper pipe
Outer
Diameter (ø)
As shown in figure on the right, remove
the cap of valve head and valve core
and then connect them to the vacuum
pump and manifold valve.
Please ensure that the air conditioner is in normal operating
condition during the operation test.
Explain to your customer the proper operation procedures
as described in the user’s manual.
Fuse Capacity
16A time delay fuse