VJ25PHAT Air Conditioner

Product Information

Specifications:

• Model: RAK-VJ25PHAT, RAK-VJ35PHAT

• Refrigerant: R410A, R32

• Power Supply: Direct connected power supply cables to the
  outdoor unit

• Mounting: Stable, non-vibratory location with full support

• Drainage: Ensure smooth flow of water when installing the drain
  hose

• Piping: Insulated indoor piping

Product Usage Instructions:

Installation Procedures:

Carefully read through the proper installation procedures before
starting any installation work. The sales agent should inform
customers about the correct operation of the installation
process.

Mounting Site:

Ensure the unit is mounted at a stable, non-vibratory location
that can provide full support. Seal any gaps with putty to prevent
air leakage.

Safety Precautions:

Read and follow all safety precautions before operating the
unit. Incorrect installation methods may cause serious
consequences. Make sure to connect the earth line for safety.

Direction of Piping:

Follow the proper direction for piping as indicated in the
manual. Use insulation sheets and binding bands as necessary.

Drainage Instructions:

Ensure proper drainage of the water container inside the indoor
unit. Fix the hanger horizontally or slightly tilted towards the
side of the drain hose to prevent water overflow.

Remote Controller Installation:

Install the remote controller holder on the wall or beam. Make
sure the unit can receive signals from the controller for proper
operation.

FAQ (Frequently Asked Questions):

Q: What type of refrigerant does the unit use?

A: The unit uses R410A and R32 refrigerants.

Q: How should I ensure proper drainage during

installation?

A: Ensure smooth water flow when installing the drain hose and
fix the hanger horizontally or slightly tilted towards the side of
the drain hose.

600
RAK-VJ25PHAT RAK-VJ35PHAT
Carefully read through the procedures of proper installation before starting installation work. The sales agent should inform customers regarding the correct operation of installation.
EE0019948P rev.

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 causewater 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 andfire 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 theconductors of the wire are inserted into the terminals to prevent the external force is being applied to the connection section of theterminal 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 orstronger 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 mayoccur. After completion of installation work, check to make sure that there is no refrigeration gas leakage. If the refrigerant gas leaks into theroom, 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 conditionertechnician 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 betweenthe outdoor and indoor unit. Do not connect the earth line to the gas tube, water pipe, lighting rod or the earth line of thetelephone unit. Improper earthing may cause electric shocks.
R410A R32)

CAUTION
Acircuit breaker must be installed in the house distribution box for the direct connected power supply cables to theoutdoor unit. In case of otherinstallations 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 fireif flammable gas leaks around it.
Please ensure smooth flow of water when installing the drain hose. Improper installing may wet your furniture.
An IEC approved power cord should be used. Power cord type: NYM. 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-powerwireless 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.

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.
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 apressure 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.

Be sure to completely seal any gap with putty.

Figure showing the Installation of Indoor Unit.

Names of Indoor Components

above 50mm above 1 50mm

2

No.

Item

Hanger

Qty

1

1

about 300mm must not bend
about 450mm

6 4

Screw for Hanger

above 50mm

2

5

2300 mm or more

AAA size Battery

The indoor piping should be insulated

3

2

with the enclosed

insulation pipe. (If the
insulator is insufficient, please use commercial

Remote Controller 4

1

products.)

Screw for Remote

5 Controller Holder

2

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.

Direction of Piping

Plug

+RUL]RQWDOO piping

Insulation sheet 6

1

5

10

from left

7 Binding band

2

Air purifying filter

8 Connection

2

3

There are directions allowed,namely,backward

9 C-case

2

pipingIURPULJKW,

horizontally pipingIURP

Remote Controller Holder

ULJKWhorizontally pipingIURP left,vertically down fromULJKW

10

1

1 Installation of Hanger , Wall Penetration and Installation of Protection Pipe

2 Installation Of The Indoor Unit

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

Installation Of Remote Controller
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

drain hose. Otherwise, condensed water may overflow the water container.

unit can receive signal transmitted from the controller at the place where

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.

280mm 42.5mm 115mm
45mm 184mm 59mm
42.5mm

Direct Mounting On The Wall
Please use hidden beams in the wall to hold the hanger.

450mm

445mm

220mm

15mm

123mm

123mm

22mm

32.5mm

440mm
534mm 780mm

65mm 80mm

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 fluorescent

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.

The remote controller

RCeomntoroteller

must be slide in the remote controller

holder, in the direction

as shown in the figure,

RCHeoomnldteororteller

until it hooks at the lower end of the remote controller holder.

Screw (2 pieces)

Openings

Openings

1 PIPING FROM THE RIGHT SIDE

(BACKWARD, DOWNWARD, HORIZONTAL)

Preparation
Connect connecting cord. Pull out the pipe, connecting

Screw the hanger at the

Wall Penetration and Installation of Protection Pipe cord and drain hose.

positions possibly near the upper and lower hooks where the indoor unit is hung. Use 4 or more screws to fix the hanger.

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

1 Hanger 2 Screw

Plug (Procure

(As shown in figure below) Ceiling

locally)

ø4.8mm

32mm

Wall

Drill a ø65mm hole on wall which is Indoor

Outdoor

slightly tilted towards the outdoor side.

Drill the wall at a small angle.

Cut the protection pipe according to the Seal with

wall thickness.

putty

2-5mm
Seal with putty

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

Protection pipe

WALL Sleeve of protection pipe

used. Power cord type: NYM.

Installation

Connecting cords, pipe and drain hose must be laid together with Vinyl tape.

Insert the pipe through the wall hole. 1 The upper part of the Indoor unit

Wall hole

is hanged on the hanger.

Pipe

2 The projection at the lower part Cable

Drain hose

of the Indoor unit is hooked onto the hanger.

Drain layout of backward piping

1 Hanger

1 1 Hanger

Procedures to fix the holder of remote control. 1. Drill holes on wall.(As shown below) 2. Push plug into the holes. (As shown below)

Wall

ø4.4mm

10 Remote

20mm

Control Holder

5 Screw Plug (Procure locally)

WARNING
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.

Lift the body

Refrigerating of the unit

Pipe

upwards and

then force it

downwards.

Protection

Pipe

Drain Hose Connecting Cord

2
Projection

2 PIPING FROM THE LEFT SIDE (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.

INSTALLATION OF REFRIGERATING PIPES AND AIR REMOVAL

1 Preparation of Pipe
Use a pipe cutter to cut the copper pipe and remove burr. Trimming tool

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

Drain hole

Copper pipe

Hexagonal wrench key (4mm) Drain hole

Drain cap

Drain Hose
· Remove low cover

· Push the pipe deeply until the insulating
section of the drain hose end gets over the rib at the indoor unit side.

· Insert drain cap up to the location securely till the cap stops.

Hexagonal wrench key (4mm)

·

Please use hexagonal wrench key(4mm) to insert the drain cap. (This is an easier way to install the drain cap.)

CAUTION

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.
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

Pipe support

Transform after bending downward.

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

Drain hose

connection.

The terminals of 2 connected pipes must be covered

with insulator used for terminal connection. Then the pipes are wrapped with insulation pipe.

Pipe

Connecting cord

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

7 Binding band Binding band can be installed to whichever

hold them tight. Be sure to cut the extra binding band. (Otherwise, it may result in abnormal noise

or

dewfall.)

side of the installation points. However, it is recommended to attach it on the right side

Insulation pipe (must be wrapped with vinyl tape at every 120 mm)

viewing from the rear.

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.

The end of the refrigerating pipes are at locations marked with ” ” symbol. 5H I H U W R L Q V W D O O D W L R Q K D Q J H U GUD Z L Q J

Installation

Please bend ata small radius to form an arc

1100 mm

below 5mm

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

Place the drain hose through the hole on the wall.

Hook

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.

about 15cm

The projection of Indoor unit must hook to the hanger.

Wall hole

Pipe

Cable

Drain hose

Drain layout of backward piping from left

Connecting cord

Protection

pipe

Refrigerating

Drain hose

pipe
Heat insulation pipe

Pull this to the front during

the connection of refrigerating

pipe to ease task.

Connecting cord

Connected section

3 Heat Insulation and Finish of the Piping

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

4 Installation of Drain Hose

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.

Wrench

Torque wrench

Before flaring, please put on the flare nut.

Die

Die

Please use

A exclusive tool for

refrigerant R410A,

Copper pipe R32.

Outer
Diameter (Ø) 635 (1/4″) 952 (3/8″)

A (mm) Rigid Flaring Tool

For R410A,R32 tool 0 – 05
0 – 05

For R22 tool
10 10

Small diameter side

Outer diameter of pipe (ø)

Torque N·m (kgf·cm)

6.35 (1/4″) 13.7-18.6 (140 – 190)

Large diameter side

9.52 (3/8″) 34.3-44.1 (350 – 450)

Valve head cap

Small diameter side Large diameter side
Valve core cap

6.35 (1/4″) 9.52 (3/8″)

19.6-24.5 (200 – 250) 19.6-24.5 (200 – 250) 12.3-15.7 (125 – 160)

Gas leakage inspection

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 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.

CONNECTION OF POWER CORD

WARNING THIS APPLIANCE MUST BE EARTHED.

Detail of Cutting the Connecting Cord
Indoor Unit

Strip wires

70mm
10mm 1 2 3

Green + Yellow (ground)

10mm 45mm

Connecting cord

WARNING
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.
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

2

cover.

1

How to connect the optional parts
(H-LINK RAC Adapter, Dry contact, Wired Remote
Controller, Run status and alarm output)
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 Controller : CN20 4 Relay kit for run status and alarm output: CN25 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. 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. Please do the operation test after the connection.

Earth
After remove the screw and terminal cover, and put the connecting cords and fix the terminal cover with screw.

Connecting cord Cord band

CN20 CN7B CN6 CN25

HOW TO REMOVE OR ATTACH THE FRONT COVER

How to remove the front cover

Remove the front panel

Move

2

Arm

1

Push

ECO Sensor

Claw

Claw

Claw cover Screw

Screw

Ditch

Bending upwards

Condensed water pond

Condensed water pond

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.)

HOW TO REMOVE INDOOR UNIT

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

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 1 screw, remove the cover of electric box, then remove the 2 screws, 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

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. Tighten the 2 screws.
Assemble the cover of electric box, then tighten the screw.
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.

CAUTION

Remove and attach the front cover to the X

direction as shown in the figure to ensure

no damage occurs to the ECO sensor.

O

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