![Hitachi RAK-18QXB [2/2] Wiring of the indoor unit](/img/pdf.png)
Hitachi RAK-18QXB [2/2] Wiring of the indoor unit
![Hitachi RAK-18QXB [2/2] Wiring of the indoor unit](/views2/1333356/page2/bg2.png)
2
Wiring of The Indoor Unit
•
For wire connection of the Indoor unit, you need to remove the front
cover, the
low cover under the body of the unit and terminal cover.
•
Remove the cover from the terminal base and screw the cable.
Method to remove the low cover
•
Pull at the 1 and
2
in
the directions as shown
by arrows to remove the
cover.
1
2
Detail of Cutting the Connecting Cord
70mm
10mm
10mm
45mm
1
2
3
Strip
wires
Connecting cord
Green + Yellow
(ground)
Indoor Unit
Connecting
cord
Cord band
After remove the screw
and terminal cover, and
put the connecting cords
and fix the terminal cover
with screw.
Earth
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.
• Please use pliers to pull out the drain cap.
(This is an easier way to remove the drain
cap).
CAUTION
Insufficient insert may
result in water leakage.
Drain Hose
Drain cap
•
Remove low cover
•
Insert drain cap up to the
location securely till the
cap stops.
•
Push the pipe deeply until the insulating
section of the drain hose end gets over the
rib at the indoor unit side.
CAUTION
•
The rubber strap used for fixing the insulator should not
t eb ied with great force. Otherwise,this will damage heat
insulation and causes water condensation.
• 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.
• Transform the piping while holding down the
lower portion
of pipe-support by hand.
Pipe
Rubber strap tied
with great force
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
pipes are wrapped with insulation pipe.
• Connect the connecting cord after removing low
cover.
(Refer to "CONNECTION OF POWER CORD")
• 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
THE INSTALLATION OF INDOOR UNIT
Preparation To Install Refrigerating Pipes
• The refrigerating pipes and connecting cord
transform and are attached.
Please bend at a small
radius to form an arc
Installation
Hang the indoor unit onto the hanger. Use the temporar
y 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.
4 Installation of Drain Hose
CAUTION
Be sure that the drain hose is
not loosely connected bend or
proper condition like left figure.
CAUTION
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
unit during installation. (Careless may result in water leakage.)
• The connected terminals should be completed sealed
with heat insulator and then tied up with rubber strap.
• Do not tie the terminals with the tape too tight.
If any clearance or over-tightening may cause
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.
Insulation material for pipe
connection
Sleeve of
protection pipe
Putty
Putty
The end of the refrigerating pipes are at
locations marked with “
” symbol.
3 Heat Insulation and Finish of the Piping
Drain cap
Pipe
support
Transform after
bending downward.
Pipe
Connecting
cord
Drain hose
Insulation pipe (must be wrapped with
vinyl tape at every 120 mm)
5mm
below
pond
Bending upwards
Condensed water
Ditch
about 15cm
Hook
Projection
pond
Condensed water
• Remove burr and jagged edge will cause leakage.
• Point the side to be trimmed downwards during
trimming to prevent copper chips from entering the pipe.
Copper pipe
Trimming tool
• Before flaring, please put on the flare nut.
A
Die
Die
Copper pipe
• Please use
exclusive tool for
refrigerant R410A.
2 Pipe Connection
CAUTION
• In case of removing flare nut of a indoor unit, first remove
a nut of small diameter side, or a seal cap of big diameter
side will fly out. Free from water into the piping when
working.
• Be sure to tighten the flare nut to the specified torque with
a torque wrench.
If the flare nut is overtightened, the nut may be split after a
long period has passed, and may cause a refrigerant leak.
• Please be careful when bending the copper pipe.
• Screw in manually while adjusting the center.
After that, use a torque wrench to tighten the
connection.
Torque
wrench
Flare nut
Wrench
Gas leakage inspection
Please use gas leakage detector to check if
leakage
occurs at
connection of Flare nut
as shown in below.
If gas leakage
occurs,
further tighten the connection
to stop leakage.
1 Preparation of Pipe
• Use a pipe cutter to cut the copper pipe and remove burr.
CAUTION
• For cable connection to control P.W.B., you need to
remove front cover and electrical box cover.
Each connecting location is as below.
H-LINK RAC Adapter：CN7
Wired Remote Control : CN20
• Please check and confirm manuals attached to each
optional parts for more connection details.
• You can refer to this installation manual how to remove
and re-attach the front cover.
• Please be careful not to damage lead wires by edge of
plate when connecting the optional parts.
CN7
CN20
CN6
CN6
CN7
CN21
•
Push up the [PUSH] sections at the bottom of the indoor unit
and pull the bottom plate towards you. Then the claws are
released from the stationary plate.
(The [PUSH] sections are indicated by 2 arrows in the right
figure)
HOW TO REMOVE INDOOR UNIT
How to remove the front cover How to Attach the Front Cover
Check that the drain pan is securely attached.
After installing the front cover onto the unit, hook three claws
at upper side of the cover securely. Then, push the center of
the front cover to lock the claws.
Install the filter.
Slide the shafts of the right and left arms on the front panel
along the steps to insert the shafts into the holes till they stop.
After checking that the shafts are securely inserted, close the
panel.
1
Remove the front panel
• Please remove and attach the front panel by
both hands.
• After opening the front panel by both hands.
1
Undo the right arm while pushing it inside.
2
Slide the front panel to right as shown in figure.
Then remove while pulling it to front.
Remove the filters.
Pull the side faces (lower sections) of the front
cover towards you as shown in the figure and
remove the cover.
1
1
2
3
2
3
4
5
2
2
3
4
1
2
3
WARNING
•
•
FINAL STAGE OF INSTALLATION
WARNING
• THIS APPLIANCE MUST BE EARTHED.
Leave some space in the connecting cord for
maintenance purpose and be sure to secure
it with the cord band.
Secure the connecting cord along the coated part of the wire using
the cord band. Do not exert pressure on the wire as this may cause
overheating or fire.
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
RAK-15QPB/RAK-18_25RPB_IM_English
DROC REWOP FO NOITCENNOC
How to connect the optional parts
(H-LINK RAC Adapter, Dry contact, Wired Remote
Controller)
Dry contact: CN6
ler
Pull this to the front during
the connection of refrigerating
pipe to ease task.
Wall hole
Pipe
Drain
hose
Cable
Drain layout of
backward piping
from left
Protection
pipe
Connecting cord
Connected
section
Drain hose
Heat
insulation pipe
Refrigerating
pipe
Connecting
cord
Outer A (mm) Rigid Flaring Tool
Diameter (Ø) For R410A tool For R22 tool
6.35 (1/4") 0 - 0.5 1.0
9.52 (3/8") 0 - 0.5 1.0
0 - 0.5 1.012.7 (1/2")
6.35 (1/4”) 13.7 – 18.6 (140 – 190)
)054 – 053( 1.44 – 3.43 )”8/3( 25.9
)”2/1( 7.21
44.1 – 53.9 (450 – 550)
)052 – 002( 5.42 – 6.91 )”4/1( 53.6
)052 – 002( 5.42 – 6.91 )”8/3( 25.9
)053 – 003( 3.43 – 4.92 )”2/1( 7.21
12.3 – 15.7 (125 – 160)
Valve head
cap
Small diameter side
Large diameter side
Small diameter side
Large diameter side
Valve core cap
Outer diameter
of pipe (ø)
Torque N·m
(kgf·cm)
[PUSH] mark positions
Shaft
Hole
Shaft
Hole
CAUTION
Remove and attach the front cover to the
direction as shown in the figure to ensure
no damage occurs to the ECO sensor.
X
O
ECO Sensor
Screw
Screw
After removing three screws, pull the center of the
and release the claws.
front cover
Tighten three screws.
Содержание
- A circuit breaker must be installed in the house distribution box for the direct 1
- 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 1
- An iec approved power cord should be used power cord type 1
- 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 1
- 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 unless it seals completely any air with high humidity flows from outdoor and any dew may drop 1
- 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 1
- Caution improper installation may result in serious consequence 1
- 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 1
- Connect connecting cord 1
- Connected power supply cables to the outdoor unit in case of other 1
- Direction of piping 1
- Drill a ø65mm 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 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
- Figure showing the installation of indoor unit 1
- For service personnel only 1
- Indoor unit 1
- Insert the pipe through the wall hole 1
- Installation 1
- Installation of hanger wall penetration and installation of protection pipe 1
- Installation of the indoor unit 1
- Installation work yourself please observe the installation stated in the installation manual during the process of installation improper installation may cause 1
- Installations 1
- Make sure to connect earth line 1
- Names of indoor components 1
- No item qty 1
- Occur after completion of installation work check to make sure that there is no refrigeration gas leakage if the refrigerant gas leaks into the 1
- Openings openings 1
- Piping from the right side backward downward horizontal 1
- Please request your sales agent or qualified technician to install your unit water leakage short circuit or fire may occur if you do the 1
- Please use hidden beams in the wall to hold the hanger 1
- Preparation 1
- Pull out the pipe connecting cord and drain hose 1
- Rak 50rxb rak 35rxb rak 25rxb rak 18qxb 1
- 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 1
- 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 1
- Safety precaution 1
- Stronger vibration may occur 1
- 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 resu 1
- The electric cables should neither be reworked nor added make sure to use an exclusive circuit breaker otherwise fire or electric shock might occur by connection failure isolation failure or over current make sure to connect cables to terminal properly and terminal cover should close firmly otherwise over heating at terminal contact fire or electric shock might occur make sure that there is no dust on any connected points of electric cables and fix firmly otherwise fire or electric shock might occur 1
- The installation height should be at least 2300 mm or more from the floor 1
- The projection at the lower part of the indoor unit is hooked onto the hanger 1
- The upper part of the indoor unit is hanged on the hanger 1
- This sign in the figures indicates prohibition 1
- To operate the remote controller at its holder please ensure that the 1
- Warning 1
- Warning incorrect methods of installation may cause death or serious injury 1
- 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 1
- 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 1
- Caution 2
- D r o c r e w o p f o n o i t c e n n o c 2
- Final stage of installation 2
- Gas leakage inspection 2
- Heat insulation and finish of the piping 2
- Installation after connection of refrigerating pipes 2
- Installation of drain hose 2
- Installation of refrigerating pipes and air removal 2
- Method to remove the low cover 2
- Pipe connection 2
- Piping from the left side backward downward horizontal 2
- Preparation of pipe 2
- The connection of refrigerating pipe during the installation of indoor unit 2
- This appliance must be earthed 2
- Wiring of the indoor unit 2
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