Hitachi RAK-DJ18PHAE Installationshandbuch

<0018833H> FOR SERVICE PERSONNEL ONLY
EN
1
INDOOR UNIT
RAK-DJ18PHAE
RAK-DJ25PHAE
MODEL
RAK-DJ35PHAE
RAK-DJ50PHAE
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.
WARNING
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 R32. 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( R32)
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.
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 Installation of Hanger , Wall Penetration and Installation of Protection Pipe
Wall Penetration and Installation of Protection Pipe
CAUTION
The draining of the water container inside the Indoor unit can be done from the left.
Drill a ø65mm hole on wall which is
Therefore the hanger must be fixed horizontally or slightly tilted towards the side of
slightly tilted towards the outdoor side.
drain hose. Otherwise, condensed water may overflow the water container.
Drill the wall at a small angle.
Cut the protection pipe according to the
Direct Mounting On The Wall
wall thickness.
Empty gap in the sleeve of protection
Please use hidden beams in the wall to hold the hanger.
pipe should be completely sealed with
450mm
putty to avoid dripping of rain water into
445mm
220mm 15mm the room.
Please ensure smooth flow of water
123mm
123mm
when installing the drain hose. Improper
installing may wet your funiture.
32.5mm
22mm An IEC approved power cord should be
used. Power cord type: NYM.
60mm 85mm 440mm 65mm 80mm
534mm
780mm
Screw the hanger at the
Be sure that the wire is not in contact with any metal in the wall.
positions possibly near the
Please use the protection pipe as wire passing through the
upper and lower hooks where
hollow part of the wall so as to prevent the possibility of
the indoor unit is hung. Use 4 or
damaged by mouse. Unless it seals completely, any air with high
more screws to fix the hanger.
humidity flows from outdoor and any dew may drop.
Procedures of Installation and Precautions
Procedures to fix the hanger.
1. Drill holes on wall. 2. Push plug into the holes. 3. Fix the hanger on wall
(As shown below) (As shown below) with 4.1 x 32 screw.
Wall (As shown in figure below)
1 Hanger Plug
Ceiling
2 Screw (Procure
locally)
Wall
32mm
CAUTION
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
R410A R32) installing may wet your fu niture. r
An IEC approved power cord should be used. Power cord type: NYM.
THE CHOICE OF MOUNTING SITE
(Please note the following matters and obtain permission from customer before installation.)
WARNING
The unit should be mounted at stable, non-vibratory location which can provide
full support to the unit.
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.
No nearby leakage risk of flammable gas, and no nearby source of vapor
or oil smoke.
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 should be at least 2300 mm or more from the floor.
The distance from the air outlet to the fire alarm must be at least 1500mm
and there must be no fire alarm in the front direction of the indoor unit.
Figure showing the Installation of Indoor Unit.
Names of Indoor Components
Be sure to
above 50mm No. Item
completely 2
above 1
Hanger
seal any
50mm
gap with
1
putty.
Screw for Hanger
2
above 50mm
2300 mm or more
AAA size Battery
The indoor piping
should be insulated 3
with the enclosed
insulation pipe. (If the
Remote Controller
insulator is insufficient,
6
please use commercial
4
products.)
My Mode
Screw for Remote
Controller Holder
Direction of Piping
5
Backward piping
4 from left
Insulation sheet
6
5
Binding band
7
Connection
3
There are 6 directions
Air purifying filter
allowed,namely,backward
8
piping, backward piping
from left,horizontally piping
from right,horizontally piping
C-case
from left,vertically down from
9
right,vertically down from left.
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.
Indoor Outdoor
Then smoothen the edges of openings with a file.
2-5mm
Seal with Seal with
putty putty
Openings
Openings
Protection
PIPING FROM THE RIGHT SIDE
WALL 1
pipe
Sleeve of
(BACKWARD, DOWNWARD, HORIZONTAL)
protection
pipe
Preparation
Connect connecting cord.
Pull out the pipe, connecting
cord and drain hose.
WARNING
Connecting cords, pipe and
drain hose must be laid
together with Vinyl tape.
Installation
Insert the pipe through the wall hole.
Wall hole
1 The upper part of the Indoor unit
is hanged on the hanger.
The projection at the lower part
2
Cable
of the Indoor unit is hooked onto
Drain layout of
the hanger.
backward piping
1
Hanger
Lift the body
Refrigerating
of the unit
Pipe
upwards and
then force it
downwards.
2
Protection
Pipe Drain Hose Connecting Cord
PIPING FROM THE LEFT SIDE (BACKWARD, DOWNWARD, HORIZONTAL)
2
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
Insufficient insert may
cap).
result in water leakage.
Drain hole
Hexagonal wrench •
Push the pipe deeply until the insulating
Drain cap
Drain Hose
key (Φ4mm)
section of the drain hose end gets over
the rib at the indoor unit side.
•
Remove low cover
•
Insert drain cap up to the location securely till the cap stops.
• Please use hexagonal wrench key( Φ 4mm) to insert the drain cap.
Hexagonal wrench
(This is an easier way to install the drain cap.)
Drain hole
key (Φ4mm)
CAUTION
The rubber strap used for fixing the insulator should not
be tied with great force.Otherwise,this will damage heat
Pipe
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 Pipe
support
of pipe-support by hand.
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
Qty
with insulator used for terminal connection. Then the
Pipe
pipes are wrapped with insulation pipe.
Connect the connecting cord after removing low
1
cover.
(Refer to "CONNECTION OF POWER CORD")
Binding band
7
After adjustment, fit the connecting cord and pipes
Binding band can be
5 into the space available under the unit. Use holder to
installed to whichever
hold them tight. side of the installation
points. However, it is
Be sure to cut the extra binding band.
recommended to attach
(Otherwise, it may result in abnormal noise or dewfall.)
it on the right side
2
viewing from the rear.
THE CONNECTION OF REFRIGERATING PIPE DURING
THE INSTALLATION OF INDOOR UNIT
The end of the refrigerating pipes are at
1
Preparation To Install Refrigerating Pipes
locations marked with " " symbol.
The refrigerating pipes and connecting cord
transform and are attached.
1
1100 mm
Please bend at a small
Installation
radius to form an arc
1
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. Projection
2
Place the drain hose through the hole on the wall.
Wrap the refrigerating pipes with insulation pipe after
connecting refrigerating pipe.
2
Connect the connecting cord after removing low cover.
(Refer to "Connection of Power Cord")
After adjustment, the connecting cord and refrigerating pipes
2
are placed into the space available under the Indoor unit.
The projection of Indoor unit must hook to the hanger.
Protection
Wall hole pipe
Refrigerating Drain hose
Pipe
pipe
Drain Pull this to the front during
Cable
hose Heat
the connection of refrigerating
Drain layout of insulation pipe
Connecting pipe to ease task. Connecting cord
backward piping
from left cord
3 Heat Insulation and Finish of the Piping
The connected terminals should be completed sealed
Insulation material for pipe
with heat insulator and then tied up with rubber strap.
connection
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
Sleeve of
tape as shown in the figure showing the installation of
protection pipe
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.
Putty
4 Installation of Drain Hose
Ditch
Be sure that the drain hose is
Condensed
water pond not loosely connected bend or
proper condition like left figure.
Bending upwards Condensed water
pond
Pipe 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
Drain hose CAUTION
unit during installation. (Careless may result in water leakage.)
1 Hanger
HOW TO REMOVE INDOOR UNIT
1
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)
[PUSH] mark positions
Projection
INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL
1 Preparation of Pipe
Use a pipe cutter to cut the copper pipe and remove burr.
CAUTION
Trimming tool
Copper pipe
CAUTION
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.
Before flaring, please put on the flare nut.
Die
Die Please use
A
exclusive tool for
refrigerant R410A,
R32.
Copper pipe
Rubber strap tied
Outer A (mm) Rigid Flaring Tool
with great force
Diameter (Ø)
F r o R 4 1 0 A R , 3 2 o t l o F r o R 2 2 o t l o
6,35 (1/4") 0 - 0,5 1,0
9,52 (3/8") 0 - 0,5
1,0
2 Pipe Connection
Transform after
bending downward.
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
Drain hose 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.
Connecting cord
If the flare nut is overtightened, the nut may be split after a
long period has passed, and may cause a refrigerant leak.
CONNECTION OF POWER CORD
Insulation pipe (must be
THIS APPLIANCE MUST BE EARTHED.
wrapped with vinyl tape
WARNING
at every 120 mm)
Detail of Cutting the Connecting Cord
Indoor Unit
70mm
Green + Yellow
10mm (ground)
Strip 1
wires
2
3
10mm
Connecting cord
45mm
WARNING
below
5mm
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
Hook
overheating or fire.
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.
about 15cm
Earth
Connecting
cord
Connected
section
Cord band
After remove the screw
and terminal cover, and
put the connecting cords
and fix the terminal cover
with screw.
Putty
How to remove the front cover
Remove the front panel
1
2
Arm
Move
Push
CAUTION
1 Push the end of the right-side arm outward to release the
tab.
2 Move the left-side arm outward to release the left tab, and
then pull the panel towards you.
Remove the filters.
After removing 3 screws, remove the cover of electric box,
pull the center of the front cover towards you and release
the claws.
Pull the side faces (lower sections) of the front cover towards
you as shown in the figure and remove the cover.
Claw
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.
Flare nut
Wrench
Torque
wrench
Outer diameter Torque N·m
of pipe (ø) (kgf·cm)
Small diameter side 6.35 (1/4") 13.7-18.6 (140 - 190)
Large diameter side 9.52 (3/8") 34.3-44.1 (350 - 450)
Small diameter side 6.35 (1/4") 19.6-24.5 (200 - 250)
Valve
head cap Large diameter side 9.52 (3/8") 19.6-24.5 (200 - 250)
Valve core cap 12.3-15.7 (125 - 160)
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.
Method to remove the low cover
Pull at the 1 and 2 in
the directions as shown
by arrows to remove the
2
cover.
1
How to connect the optional parts
(H-LINK RAC Adapter, Dry contact,
Wired Remote Controller)
For cable connection to control P.W.B., you need to
remove front cover and electrical box cover.
Each connecting location is as below.
1 Dry contact: CN6
2 H-LINK RAC Adapter: CN7B
3 Wired Remote Control ler : CN20
Please check and confirm manuals attached to each
optional parts for more connection details.
Please check service manual about how to set from
remote controller.
Y ou 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.
Please do the operation test after the connection.
CN20
CN7B
CN6
How to Attach the Front Cover
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.
Assemble the cover of electric box.
Tighten the 3 screws.
Install the filter.
Attaching the Front Panel
Insert the shaft of the left arm along the step on the unit into
the hole.
Securely insert the shaft of the right arm along the step on
the unit into the hole.
Make sure that the front panel is securely attached, and then
close the front panel.
cover
Claw
Claw Claw
Screw
Screw