TOSHIBA RAS-25 Air Conditioner Split Type Instruction Manual

TOSHIBA RAS-25 Air Conditioner Split Type

Specifications:

• Indoor unit model: RAS-25, 35S4KVDG-ND
• Outdoor unit model: RAS-25, 35S4AVPG-ND
• Product code: 1134050104-1

Product Information:

The air conditioner is a split type system with R32 refrigerant.
It comes with safety precautions, installation diagrams for indoor and outdoor units, electrical works information, and appendix details.

Product Usage Instructions

Installation:

1. Ensure all safety precautions are followed before starting the installation process.
2. Refer to the installation diagrams provided for both indoor and outdoor units for proper setup.
3. Install optional parts if required as per the instructions.
4. Place the outdoor unit in a suitable location following guidelines for regions with snowfall and cold temperatures.
5. Connect the refrigerant piping carefully and evacuate the system as instructed.
6. Complete electrical works by connecting the power supply and wiring as per the diagrams provided.

Maintenance:

• Regularly clean the filters to ensure efficient operation.
• Check for any water drainage issues and clear if necessary.
• Schedule professional maintenance checks at least once a year.

Troubleshooting:
If the air conditioner is not cooling/heating properly or showing any error codes, refer to the troubleshooting section of the manual or contact customer support for assistance.

FAQ:

Q: How often should I clean the filters?
A: It is recommended to clean the filters every 2 weeks for optimal performance.

Q: Can I install the air conditioner myself?
A: It is recommended to have a professional installer set up the air conditioner to ensure correct installation and avoid potential issues.

Scan QR CODE to access installation and owner’s manual on website. https://www.toshiba-carrier.co.th/manuals/default.aspx
Manual are available in EN/SV/FI/NO/DA/EE/LV/LT.

PRECAUTIONS FOR SAFETY

Read the precautions in this manual carefully before operating the unit.

This appliance is filled with R32.

Warning indications on the air conditioner unit

CAUTION

**BURST HAZARD**

Open the service valves before the operation, otherwise there might be the burst.

| CAUTION BURST HAZARD

Open the service valves before the operation, otherwise there might be the burst.

Before installation, please read these precautions for safety carefully.

• Be sure to follow the precautions provided here to avoid safety risks.
  The symbols and their meanings are shown below.

WARNING : It indicates that incorrect use of this unit may cause severe injury or death.

CAUTION : It indicates that incorrect use of this unit may cause personal injury (1), or property damage (2).

1. Personal injury means a slight accident, burn, or electrical shock which does not require admission or repeated hospital treatment.
2. Property damage means greater damage which affects assets or resources.

For general public use
Power supply cord and connecting cable of appliance use shall be at least polychloroprene sheathed flexible cord (design H07RN-F) or cord designation 60245 IEC66. (Shall be installed in accordance with national wiring regulations.)

To disconnect the appliance from the main power supply

CAUTION
This appliance must be connected to the main power supply by means of a circuit breaker or a switch with a contact separation of at least 3 mm in all poles.

DANGER

• FOR USE BY QUALIFIED PERSONS ONLY.

• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE ALL POWER SWITCHES ARE OFF.
  FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING CABLE IS CONNECTED WRONGLY, ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION.

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS.
  FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

• TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD, PLACE THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEATERS, FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN, BE VERY CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT (R32) WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.

WARNING

• Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock switches.

• Do not install in a place which cannot bear the weight of the unit.
  Personal injury and property damage can result if the unit falls.

• Before doing the electrical work, attach an approved plug to the power supply cord.
  Also, make sure the equipment is properly earthed.

• Appliance shall be installed in accordance with national wiring regulations.
  If you detect any damage, do not install the unit. Contact your dealer immediately.

• Do not use any refrigerant different from the one specified for complement or replacement.
  Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body.

• Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer.

• The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance or an operating electric heater).

• Be aware that refrigerants may not contain an odour.

• Do not pierce or burn as the appliance is pressurized. Do not expose the appliance to heat, flame, sparks, or other sources or ignition.
  Else, it may explode and cause injury or death.

• For R32 model, use pipes, flare nut and tools which is specified for R32 refrigerant. Using of existing (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant cycle (piping), and possibly result in explosion and injury.

• Thickness of copper pipes used R32 must be more than 0.8 mm. Never use copper pipes thinner than 0.8 mm.

• After completion of installation or service, confirm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fire.

• Comply with national gas regulations.

• Do not add any other devices without factory advice.

WARNING

• After installation work, make sure below before operation.

  • Connection pipes are connected properly and no leakage.
  • Packed valves are fully open.
    Running compressor without open packed valves may cause abnormal high pressure and parts failure.
    Leakage at connection piping may suck air and make further high pressure cause burst and injure.

• During pump down work make sure below process.

  • Don’t mix air into the refrigerant cycle.
  • Stop the compressor before removing piping after packed valves are fully closed.

Removing piping under the compressor running and packed valves open,air might be sucked and refrigeration cycle pressure becomes abnormally high, and it causes burst or injury on persons.

CAUTION

• Exposure of unit to water or other moisture before installation could result in electric shock.
  Do not store it in a wet basement or expose to rain or water.

• After unpacking the unit, examine it carefully for possible damage.

• Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause of fire.

• Do not install in a place that can increase the vibration of the unit.
  Do not install in a place that can amplify the noise level of the unit or where noise and discharged air might disturb neighbors.

• To avoid personal injury, be careful when handling parts with sharp edges.

• Please read this installation manual carefully before installing the unit.
  It contains further important instructions for proper installation.

• The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.

REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER
Please make absolutely sure that the installation of this appliance is reported to the local power supplier before installation. If you experience any problems or if the installation is not accepted by the supplier, the service agency will take adequate countermeasures.

• Important information regarding the refrigerant used This product contains fluorinated greenhouse gases.
  Do not vent gases into the atmosphere.
  Refrigerant type: R32
  GWP(1) value: 675* (ex. R32 ref. AR4)
  (1) GWP = global warming potential
  The refrigerant quantity is indicated on the unit name plate.

This value is based on F gas regulation 517/2014

ACCESSORY AND INSTALLATION PARTS

Air filter
Clean every 2 weeks.

1. Open the air inlet grille.
2. Remove the air filters.
3. Vacuum or wash and then dry them.
4. Reinstall the air filters and close the air inlet grille.

Filter
Maintenance & Shelf-life
Clean every 3-6 months when dust stuck or covers the filter.

1. Recommend to use vacuum to clean by sucking the dusts which stick or dip inside the filter or use the blower to blow the dust go out through the filter.

2. If necessary to use water to clean, simply use the plain water to wash the filter, dry with the sunlight for 3-4 hours or until it completely dry.
   Nevertheless, use hair drier to dry it. However, washing with water, it may reduce the performance of the filter.

3. Replace every 2 years or sooner. (contact your dealer to purchase new filter) (P/N : RB-A622DA)
   Note: Filter life depends on the level of impurities in your operating environment. Higher levels of impurities may require more frequent cleaning and replacement. In all cases, we recommend an additional set of filters to improve the purifying and deodorizing performance of your air conditioner.

INSTALLATION DIAGRAM OF INDOOR AND OUTDOOR UNITS

Optional Installation Parts

A

| Refrigerant piping

Liquid side : Ø6.35 mm Gas side     : Ø9.52 mm

|

One each

B

| Pipe insulating material (polyethylene foam, 6 mm thick)|

1

C| Putty, PVC tapes| One each

Fixing bolt arrangement of outdoor unit

• Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind.
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.
• If it is necessary to drain the defrost water, attach drain nipple ” and cap water proof # to the bottom plate of the outdoor unit before installing it.

Drain nipple and cap water proof are packed in outdoor unit.

INDOOR UNIT

Installation Place

• A place which provides the spaces around the indoor unit as shown in the diagram.
• A place where there are no obstacles near the air inlet and outlet.
• A place which allows easy installation of the piping to the outdoor unit.
• A place which allows the front panel to be opened.
• The indoor unit shall be installed at least 2.5 m height. Also, it must be avoided to put anything on the top of the indoor unit.

CAUTION

• Direct sunlight to the indoor unit’s wireless receiver should be avoided.
• The microprocessor in the indoor unit should not be too close to RF noise sources.
  (For details, see the owner’s manual.)

Remote controller

• A place where there are no obstacles such as a curtain that may block the signal from the indoor unit.
• Do not install the remote controller in a place exposed to direct sunlight or close to a heating source such as a stove.
• Keep the remote controller at least 1 m apart from the nearest TV set or stereo equipment. (This is necessary to prevent image disturbances or noise interference.)
• The location of the remote controller should be determined as shown below.

Cutting a Hole and Mounting Installation Plate

Cutting a hole
When installing the refrigerant pipes from the rear.

1. After determining the pipe hole position on the mounting plate ( ), drill the pipe hole (Ø65 mm) at a slight downward slant to the outdoor side.

NOTE

• When drilling a wall that contains a metal lath, wire lath or metal plate, be sure to use a pipe hole brim ring sold separately.

Mounting the installation plate

Directly mounting indoor unit to the wall preparation

• In the case of block, brick, concrete or similar type wall, determining the mount screw position on the wall can be used position as below for drill hole to insert clip anchors for appropriate mounting screw.
• The provided screws should be used to fix the indoor unit directly to the wall at the predetermined position.

Space allows under the indoor unit

• Space allows for moving range of the air inlet grille and horizontal louver in operation above curtain rails, window cornice or other objects.

CAUTION

• If have curtain rails, window cornice or other objects, allow space from the indoor unit should be 55 mm or more.
• If allow space is less than 55 mm, this can affect the opening and closing of the air inlet grille and the horizontal louver.
• However, there should be no objects in the air outlet position.
  It will block the air flow direction and drop performance.

When the installation plate is directly mounted on the wall

1. Securely fit the installation plate onto the wall by screwing it in the upper and lower parts to hook up the indoor unit.
2. To mount the installation plate on a concrete wall with anchor bolts, use the anchor bolt holes as illustrated in the below figure.
3. Install the installation plate horizontally in the wall.

CAUTION
When installing the installation plate with a mounting screw, do not use the anchor bolt holes. Otherwise, the unit may fall down and result in personal injury and property damage.

CAUTION
Failure to firmly install the unit may result in personal injury and property damage if the unit falls.

• In case of block, brick, concrete or similar type walls, make 5 mm dia. holes in the wall.
• Insert clip anchors for appropriate mounting screws 6.

NOTE

• Secure four corners and lower parts of the installation plate with 4 to 6 mounting screws to install it.
  Piping and Drain Hose Installation
  Piping and drain hose forming

• Since dewing results in a machine trouble, make sure to insulate both connecting pipes. (Use polyethylene foam as insulating material.)

• The connection of pipes can be installed in the following directions.

1. Cut Front panel slit
   • Cut out the slit on the bottom left or bottom right side of the Front panel for the bottom left or bottom right connection with a coping saw.
2. Changing drain hose
   • The factory default of the drain hose is installed on the right side.
   • For bottom-leftward connection and rear leftward connection’s piping, it is necessary to change the drain hose and drain cap.
3. Cutting and welding pipes
   • For bottom-leftward connection and rear leftward connection’s piping, refrigerant connection must be made by brazing or welding.

How to cutting the Front panel

• To connect piping to the left, right or bottom side, the Front panel must be cut off.
• The Front panel can be removed by removing 4 screws securing then secure remove the front panel from the main body.
• The marking for cutting are indicated on the inside of the Front panel in the following positions.
• Cut off the pipe exist from inside of Front panel using a coping saw or an equivalent tool.
• The plastic burrs from the cutting process should be removed with a half round file or an equivalent tool.

CAUTION
When cutting the Front panel, be careful of cutting tools and any sharp edges of plastic. It can cause injuries.

How to remove the drain hose

• Removed fixing screw of LED set then pull out it from the main body.
• Removed 2 screws to fix drain pan then secure remove the drain pan from the main body
• The drain hose can be removed by removing the screw securing the drain hose then secure rotate steel plate of drain hose to out of the Drain pan and pulling out the drain hose.

How to fix the drain hose

• To install the drain hose, insert the drain hose firmly until the connection part contacts with heat insulator, secure push steel plate of drain hose to predetermined position of Drain pan then fix it by original screw.

CAUTION
When removing or install the drain hose, be careful of any sharp edges of steel plate. The edges can cause injuries.

How to remove the drain cap

• Clip the drain cap by needle-nose pliers and pull out.

How to fix the drain cap

• Insert hexagonal wrench (dia. 4 mm) in a center head.
• Firmly insert the drain cap.

CAUTION
Firmly insert the drain hose and drain cap; otherwise, water may leak.

Left-hand connection with piping

• Bend the connecting pipe so that it is laid within 43 mm above the wall surface. If the connecting pipe is laid exceeding 43 mm above the wall surface, the indoor unit may unstably be set on the wall.
  When bending the connecting pipe, make sure to use a spring bender so as not to crush the pipe.

Bend the connecting pipe within a radius of 30 mm.
To connect the pipe after installation of the unit (figure)

NOTE

• If the pipe is bent incorrectly, the indoor unit may unstably be set on the wall.
• After passing the connecting pipe through the pipe hole, connect the connecting pipes to the auxiliary pipes and wrap the facing tape around them.

How to cutting pipe

• To connect piping to the left side, the indoor unit pipes must be cut and connected by brazing or welded to the auxiliary pipes.
• Cut the pipe with a pipe cutter.

CAUTION

• Bind the auxiliary pipes (two), power supply and connecting cable with facing tape tightly.
• Carefully arrange pipes so that any pipe does not stick out of the rear plate of the indoor unit.
• Carefully connect the auxiliary pipes and connecting pipes to one another and cut off the insulating tape wound on the connecting pipe to avoid double-taping at the joint; moreover, seal the joint with the vinyl tape, etc.
• Since dewing results in a machine trouble, make sure to insulate both connecting pipes. (Use polyethylene foam as insulating material.)
• When bending a pipe, carefully do it, not to crush it.

Indoor Unit Fixing

1. Remove the air inlet grille.
2. Pass the pipe through the hole in the wall and hook the indoor unit on the installation plate at the upper hook.
3. Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate.
4. While pressing the indoor unit onto the wall, hook it at the lower part on the installation plate. Pull the indoor unit toward you to confirm that it is firmly hooked up on the installation plate.

• For detaching the indoor unit from the installation plate, pull the indoor unit toward you while pushing its bottom up at the specified parts.

INFORMATION

• The lower part of indoor unit may float, due to the condition of piping and installer cannot fix it to the installation plate. In that case, use the screws provided to fix the indoor unit with the installation plate.
• Especially when the pipes are pulled out to the left side, the indoor unit must be screwed to the installation plate.

How to remove the air inlet grille

1. Be careful open the air inlet grille until arm touch the stopper of the front panel.
2. Insert a screwdriver deeply into the space between arm of the air inlet grille and the front panel.
3. Pry off the right and left arms of the air inlet grille by screwdriver.
   • Press the steel part of the safety rope then pull it to front side.
4. Remove the safety rope from the top center of the front panel.
   • Press the steel part of the safety rope then push it out to back side.

How to install the air inlet grille

1. Insert the left and right arms of the air inlet grille to the slot holes on the two sides of the front panel and push in completely.

2. Rotate the grille holder as indicated by the arrows until it stop. then, slowly lower the air inlet grille and it will be held open by the grille holder.
   Support the middle of the wooden grille with your hand while rotate the grille holder to hold open it.

3. Hook the safety rope into the top center of the front panel.

   • Press the steel part of the safety rope then pull it to front side.

4. Rotate the grille holder down then close the air inlet grille.
   Be sure to press the positions as indicated by the arrow in order to attach the air inlet grille to the indoor unit.

CAUTION

• The air inlet grille should be removed before installing the indoor unit.
  To avoid damage to the corner of the air inlet grille or the wall.

• Please install the safety rope after installing the air inlet grille to the indoor unit.

• It is not recommended to remove the air inlet grille while the indoor unit is installed. It might slip out of your hands and cause damage.

Drainage

1. Run the drain hose sloped downwards.
   NOTE

   • The hole should be made at a slight downward slant on the outdoor side.

2. Put water in the drain pan and make sure that the water is drained out of doors.

3. When connecting extension drain hose, insulate the connecting part of extension drain hose with shield pipe.

CAUTION

Arrange the drain pipe for proper drainage from the unit.
Improper drainage can result in dew-dropping.

This air conditioner has the structure designed to drain water collected from dew, which forms on the back of the indoor unit, to the drain pan.
Therefore, do not store the power cord and other parts at a height above the drain guide.

OUTDOOR UNIT

Installation Place

• A place which provides the spaces around the outdoor unit as shown in the diagram.
• A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration.
• A place where the operation noise and discharged air do not disturb your neighbors.
• A place which is not exposed to a strong wind.
• A place free of a leakage of combustible gases.
• A place which does not block a passage.
• When the outdoor unit is to be installed in an elevated position, be sure to secure its feet.
• The allowable length of the connecting pipe.

Additional refrigerant

charging

| 16 – 25 m

(20 g / 1 m)

| 16 – 25 m

(20 g / 1 m)

Maximum refrigerant

charging

| 1.35 kg| 1.40 kg

• The allowable height of outdoor unit installation site.

• A place where the drain water does not raise any problems or with good drainage.
• A place where it can be installed horizontally.

Precautions for adding refrigerant
Use a scale having a precision with at least 10 g per index line when adding the refrigerant.
Do not use a bathroom scale or similar instrument.

CAUTION
When the outdoor unit is installed in a place where the drain water might cause any problems, Seal the water leakage point tightly using a silicone adhesive or caulking compound.

Precautions about Installation in Regions with Snowfall and Cold Temperatures

• Do not use the supplied drain nipple for draining water. Drain the water from all the drain holes directly.
• To protect the outdoor unit from snow accumulation, install a holding frame, and attach a snow protection hood and plate.
  Do not use a double-stacked design.

CAUTION

1. Install the outdoor unit without anything blocking the air discharging.

2. When the outdoor unit is installed in a place always exposed to strong wind like a coast or on a high storey of a building, secure the normal fan operation using a duct or a windshield.

3. In particularly windy areas, install the unit such as to avoid admission of wind.

4. Installation in the following places may result in trouble.
   Do not install the unit in such places.

   • A place full of machine oil.
   • A saline-place such as the coast.
   • A place full of sulfide gas.
   • A place where high-frequency waves are likely to be generated as from audio equipment, welders, and medical equipment.

Draining the Water

• Holes are provided on the base plate of the outdoor unit to ensure that the defrost water produced during heating operations is drained off efficiently.
  If a centralized drain is required when installing the unit on a balcony or wall, follow the steps below to drain off the water.

  1. Proceed with water-proofing by installing the water-proof rubber caps in the 3 elongated holes on the base plate of the outdoor unit. [How to install the water-proof rubber caps]
  2. Place four fingers into each cap, and insert the caps into the water drain holes by pushing them into place from the underside of the base plate.
  3. Press down on the outer circumferences of the caps to ensure that they have been inserted tightly. (Water leaks may result if the caps have not been inserted properly, if their outer circumferences lift up or the caps catch on or wedge against something.)
  4. Install the drain nipple and a commercially available drain hose (32 mm inside diameter), and drain off the water. (For the position where the drain nipple is installed, refer to the installation diagram of the indoor and outdoor units.)
     Check that the outdoor unit is horizontal, and route the drain hose at a downward sloped angle while ensuring that it is connected tautly.

Do not use ordinary garden hose, but one can flatten and prevent water from draining.

Refrigerant Piping Connection

Flaring

1. Cut the pipe with a pipe cutter.
2. Insert a flare nut into the pipe and flare the pipe.
   • Projection margin in flaring : A (Unit : mm)

RIDGID (clutch type)

Outer dia. of copper pipe| R32 tool used| Conventional tool used
---|---|---
Ø6.35| 0 to 0.5| 1.0 to 1.5
Ø9.52| 0 to 0.5| 1.0 to 1.5
Ø12.70| 0 to 0.5| 1.0 to 1.5
Pipes thickness| 0.8 mm or more

IMPERIAL (wing nut type)

CAUTION

• Do not scratch the inner surface of the flared part when removing burrs.
• Flare processing under the condition of scratches on the inner surface of flare processing part will cause refrigerant gas leak.

Tightening connection

Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure.

CAUTION
Do not apply excess torque. Otherwise, the nut may crack depending on the conditions.

Tightening torque of flare pipe connections The operating pressure of R32 is higher than that of R22 (approx. 1.6 times).
It is therefore necessary to firmly tighten the flare pipe connecting sections (which connect the indoor and outdoor units) up to the specified tightening torque.
Incorrect connections may cause not only a gas leakage, but also damage to the refrigeration cycle.

Evacuating

After the piping has been connected to the indoor unit, you can perform the air purge together at once.

AIR PURGE
Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump. Do not use the refrigerant in the outdoor unit.
For details, see the manual of the vacuum pump.

Using a vacuum pump

Be sure to use a vacuum pump with counter-flow prevention function so that
inside oil of the pump does not flow backward into pipes of the air conditioner
when the pump stops.
(If oil inside of the vacuum pump enters the air conditioner, which use R32,
refrigeration cycle trouble may result.)
1. Connect the charge hose from the manifold valve to the service port of
the packed valve at gas side.
2. Connect the charge hose to the port of the vacuum pump.
3. Open fully the low pressure side handle of the gauge manifold valve.
4. Operate the vacuum pump to start evacuating. Perform evacuating for
about 15 minutes if the piping length is 20 meters. (15 minutes for
20 meters) (assuming a pump capacity of 27 liters per minute)
Then confirm that the compound pressure gauge reading is –101 kPa
(–76 cmHg).
5. Close the low pressure side valve handle of the gauge manifold valve.
6. Open fully the valve stem of the packed valves (both gas and liquid sides).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.

CAUTION

KEEP IMPORTANT 7 POINTS FOR PIPING WORK.

1. Take away dust and moisture (inside of the connecting pipes).
2. Tighten the connections (between pipes and unit).
3. Evacuate the air in the connecting pipes using a VACUUM PUMP.
4. Check gas leak (connected points).
5. Be sure to fully open the packed valves before operation.
6. Reusable mechanical connectors and flared joints are not allowed indoors. When mechanical connectors are reused indoors, sealing parts shall be renewed. When flared joints are reused indoors, the flare part shall be refabricated.
7. Don’t operate air conditioner in case no refrigerant in the system.

Packed valve handling precautions

• Open the valve stem all the way out, but do not try to open it beyond the stopper.

Pump down process

1. Turn off the Air Conditioner system.

2. Connect the charge hose from the manifold valve to the service port of the packed valve at gas side.

3. Turn on the Air Conditioner system in cooling operation more than 10 minutes.

4. Check the operating pressure of the system should be normal value. (Ref. with product specification)

5. Release the valve rod cap of both service valves.

6. Use the Hexagon wrench to turning the valve rod of Liquid side fully close. (*Make sure no entering air into the system)

7. Continue operate Air Conditioner system until the gauge of manifold dropped into the range of 0.5 – 0 kgf/cm².

8. Use the Hexagon wrench to turning the valve rod of Gas side fully close.
   And turn off the Air Conditioner system immediately thereafter.

9. Remove the gauge manifold from the service port of the packed valve.

10. Securely tighten the valve rod cap to the both service valves.

CAUTION
Should be check the compressor operating condition while pumping down process. It must not any abnormal sound, more vibration.
It is abnormal condition appears and must turn off the Air Conditioner immediately.

• Securely tighten the valve cap with torque in the following table:

Valve Rod Cap

| H17 – H19| 14~18 N·m (1.4 to 1.8 kgf·m)
H22 – H30| 33~42 N·m (3.3 to 4.2 kgf·m)

Service Port Cap

| H14| 8~12 N·m (0.8 to 1.2 kgf·m)
H17| 14~18 N·m (1.4 to 1.8 kgf·m)

ELECTRICAL WORKS

H07RN-F or 60245 IEC66 (2.5 mm2 or more)

Connecting cable

Indoor unit

Wiring of the connecting cable can be carried out without removing the front panel.

1. Remove the air inlet grille. (Please see detail on page 10)
2. Remove the terminal cover and cord clamp.
3. Insert the connecting cable (according to the local cords) into the pipe hole on the wall.
4. Take out the connecting cable through the cable slot on the rear panel so that it protrudes about 20 cm from the front.
5. Insert the connecting cable fully into the terminal block and secure it tightly with screws.
6. Tightening torque : 1.2 N·m (0.12 kgf·m)
7. Secure the connecting cable with the cord clamp.
8. Fix the terminal cover.
9. Install the air inlet grille. (Please see details on page 10)

Outdoor unit

1. Remove the valve cover, the electric parts cover and the cord clamp from the outdoor unit.

2. Connect the connecting cable to the terminal as identified by the matching numbers on the terminal block of indoor and outdoor unit.

3. Insert the power cord and the connecting cable carefully into the terminal block and secure it tightly with screws.

4. Use vinyl tape, etc. to insulate the cords which are not going to be used.
   Locate them so that they do not touch any electrical or metal parts.

5. Secure the power cord and the connecting cable with the cord clamp.

6. Attach the electric parts cover and the valve cover on the outdoor unit.

Power Supply and Connecting Cable Connection

The power supply can be selected to connect to indoor unit or outdoor unit. Choose proper way and connect the power supply and connecting cable by follow the instruction as following.

Power Supply Input Wiring Diagram

CAUTION

1. The power supply must be same as the rated of air conditioner.
2. Prepare the power source for exclusive use with air conditioner.
3. Circuit breaker must be used for the power supply line of this air conditioner.
4. Be sure to comply power supply and connecting cable for size and wiring method.
5. Every wire must be connected firmly.
6. Perform wiring works so as to allow a general wiring capacity.
7. Wrong wiring connection may cause some electrical part burn out.
8. Incorrect or incomplete wiring is carried out, it will cause an ignition or smoke.
9. This product can be connected to main power supply.
   Connection to fixed wiring : A switch which disconnects all poles and has a contact separation at least 3 mm must be incorporated in the fixed wiring.

OTHERS

Gas Leak Test

• Check the flare nut connections for the gas leak with a gas leak detector or soap water.

Remote Control A-B Selection

• When two indoor units are installed in the same room or adjacent two rooms, if operating a unit, two units may receive the remote control signal simultaneously and operate. In this case, the operation can be preserved by setting either one remote control to B setting. (Both are set to A setting in factory shipment.)
• The remote control signal is not received when the settings of indoor unit and remote control are different.
• There is no relation between A setting/B setting and A room/B room when connecting the piping and cables.

To separate using of remote control for each indoor unit in case of 2 air conditioner are installed near.

Remote Control B Setup.

1. Press [RESET] button on the indoor unit to turn the air conditioner ON.
2. Point the remote control at the indoor unit.
3. Push and hold [CHECK] button on back side of Remote Control. “00” will be shown on the display (Picture 1).
4. Press [MODE] during pushing [CHECK]. “B” will show on the display and “00” will disappear and the air conditioner will turn OFF. The Remote Control B is memorized (Picture 2).

Note:

1. Repeat above step to reset Remote Control to be A.
2. Remote Control A have not “A” display.
3. Default setting of Remote Control from factory is A.

Decorative wood

• The air inlet grille (wooden grille) of this product is made from real wood, grain patterns, color tone will vary, making each piece of wood have its own unique which it is natural characteristics of wood.
• Wood changes constantly and it affects the dimensions, color, and the wood structure. The wood will continue to change throughout the product’s life span. It’s important to handle the wooden grille correctly.
• To ensure that wooden grille of this product maintains a beautiful appearance and long lifetime, you should follow the instructions as below, regarding care and maintenance.

Maintenance & Shelf-life

• Ensure proper maintenance and prolong the shelf-life of wood by promptly cleaning when dust accumulates on decorative surfaces.
• Take special care when cleaning the decorative wood.
• Remove dust from decorative wood using a feather duster, a vacuum cleaner with a soft brush nozzle designed for furniture cleaning, or dry soft cloth.

NOTE

• Due to the natural characteristics of wood, each wooden lattice has a unique grain texture and color tone.
• The color of wood may change slightly over time, and it is normal for natural wood to darken a bit with use.

CAUTION

• Wood may expand and shrink with differences in temperature and humidity.

• Keep products at least 2 meter away from a direct heat source (heaters, radiators, fireplaces etc.).

• Direct exposure of wooden grille to sunlight may lead to loss of the original color and to get deformations.

• Please don’t use wet cloth for cleaning the wooden grille.

• Remove spilled liquids from wooden surfaces as soon as possible.

• Do not immerse the wooden grille in water.

• Do not use alcohol, petroleum, thinners, glass cleaner, polishing powder, or similar solvents for cleaning.
  These may damage the product.

• Do not use a chemically-treated duster for wiping or leave such materials on the unit for long. It may damage or fade the surface of the wood grille.

• Do not use metallic scrubbing brush or other hard brushes.

Test Operation

To switch the TEST RUN (COOL) mode, press [RESET] button for 10 seconds. (The beeper will make a short beep.)

Auto Restart Function Setting

This product is designed so that, after a power failure, it can restart automatically in the same operating mode as before the power failure.

INFORMATION

The product is shipped with Auto Restart function in the ON position.
Turn it OFF if this function is not required.

How to turn OFF the Auto Restart Function

• Press and hold the [OPERATION] button on the indoor unit for 3 seconds (3 Beep sounds but OPERATION lamp does not blink).

How to turn ON the Auto Restart Function

• Press and hold the [OPERATION] button on the indoor unit for 3 seconds (3 Beep sounds and OPERATION lamp blink 5 time/sec for 5 seconds).

NOTE

• In case of ON timer or OFF timer are set, AUTO RESTART OPERATION does not activate.

APPENDIX

Work instructions
The existing R22 and R410A piping can be reused for inverter R32 product installations.

WARNING
Confirming the existence of scratches or dents on the existing pipes and confirming the reliability of the pipe strength are conventionally referred to the local site.
If the specified conditions can be cleared, it is possible to update existing R22 and R410A pipes to those for R32 models.
Basic conditions needed to reuse existing pipes
Check and observe the presence of three conditions in the refrigerant piping works.

1. Dry (There is no moisture inside of the pipes.)
2. Clean (There is no dust inside of the pipes.)
3. Tight (There are no refrigerant leaks.)

Restrictions for use of existing pipes
In the following cases, the existing pipes should not be reused as they are. Clean the existing pipes or exchange them with new pipes.

1. When a scratch or dent is heavy, be sure to use new pipes for the refrigerant piping works.

2. When the existing pipe thickness is thinner than the specified “Pipe diameter and thickness,” be sure to use new pipes for the refrigerant piping works.

   • The operating pressure of R32 is high (1.6 times that of R22). If there is a scratch or dent on the pipe or a thinner pipe is used, the pressure strength may be inadequate, which may cause the pipe to break in the worst case.
   • Pipe diameter and thickness (mm)
     Pipe outer diameter| Ø6.4| Ø9.5| Ø12.7
     ---|---|---|---
     Thickness| R32, R410A| 0.8| 0.8| 0.8
     R22

3. When the outdoor unit was left with the pipes disconnected, or the gas leaked from the pipes and the pipes were not repaired and refilled.

   • There is the possibility of rain water or air, including moisture, entering the pipe.

4. When refrigerant cannot be recovered using a refrigerant recovery unit.

   • There is the possibility that a large quantity of dirty oil or moisture remains inside the pipes.

5. When a commercially available dryer is attached to the existing pipes.

   • There is the possibility that copper green rust has been generated.

6. When the existing air conditioner is removed after refrigerant has been recovered.
   Check if the oil is judged to be clearly different from normal oil.

   • The refrigerator oil is copper rust green in color:
     There is the possibility that moisture has mixed with the oil and rust has been generated inside the pipe.

   • There is discolored oil, a large quantity of residue, or a bad smell.

   • A large quantity of shiny metal dust or other wear residue can be seen in the refrigerant oil.

7. When the air conditioner has a history of the compressor failing and being replaced.

   • When discolored oil, a large quantity of residue, shiny metal dust, or other wear residue or mixture of foreign matter is observed, trouble will occur.

8. When temporary installation and removal of the air conditioner are repeated such as when leased etc.

9. If the type of refrigerator oil of the existing air conditioner is other than the following oil (Mineral oil),Suniso, Freol-S, MS (Synthetic oil), alkyl benzene (HAB, Barrel-freeze), ester series, PVE only of ether series.

   • The winding-insulation of the compressor may deteriorate.

NOTE
The above descriptions are results have been confirmed by our company and represent our views on our air conditioners, but do not guarantee the use of the existing pipes of air conditioners that have adopted R32 in other companies.

Curing of pipes
When removing and opening the indoor or outdoor unit for a long time, cure the pipes as follows:

• Otherwise rust may be generated when moisture or foreign matter due to condensation enters the pipes.
• The rust cannot be removed by cleaning, and new pipes are necessary.

Outdoors

| 1 month or more| Pinching
Less than 1 month|

Pinching or taping

Indoors| Every time

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