TOSHIBA RAS-24E2KVG-TR Air Conditioner Instruction Manual

TOSHIBA RAS-24E2KVG-TR Air Conditioner

Product Information

• Product: Air Conditioner (Split Type)
• Model: RAS-24E2KVG-TR (Indoor Unit), RAS-24E2AVG-TR (Outdoor Unit)
• Refrigerant: R32
• Installation Manual: 1133550108
• Language: English

Product Usage Instructions

1. Precautions for Safety:
2. Read the precautions in the manual carefully before operating the unit. – This appliance is filled with R32 refrigerant.
3. Follow the warning indications on the air conditioner unit.

Warning indication:

CAUTION

• Open the service valves before operation to avoid bursting.
• Accessory Parts: Refer to the installation diagram for optional installation parts.
• Installation Diagram of Indoor and Outdoor Units:
  • Follow the diagram provided for the installation of indoor and outdoor units.
  • Optional installation parts can be used as per requirements.
• Outdoor Unit Installation:
  • Choose a suitable installation place for the outdoor unit.
  • Take precautions for installation in regions with snowfall and cold temperatures
  • Ensure proper draining of water. – Follow the refrigerant piping connection instructions.
  • Evacuate the system as specified. 5. Electrical Works: – Follow the wiring connection instructions.
  • Power supply and connecting cable connection should be done correctly.
  • Refer to the power supply input wiring diagram for guidance.

Others:

• Perform a gas leak test before operation.
• Set A-B selection on the remote control.
• Test the operation of the unit.
• Enable or disable the auto restart function as required.

Appendix:
Additional information is provided in the appendix section.
Note: For general public use, the power supply cord and connecting cable of the appliance should be at least a polychloroprene sheathed flexible cord (design H07RN-F) or cord designation 60245 IEC66. It should be installed following national wiring regulations. For more detailed information and instructions, refer to the complete user manual.

PREPRECACAUTIONS FOUTIONS FOR SAFETYR SAFETY

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

This appliance is filled with R32.

---|---|---|---

• 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 fl exible cord (design H07RN-F) or cord designation 60245 IEC66. (Shall be installed in accordance with national wiring regulations.)

CAUTION: To disconnect the appliance from the main power supply
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 specifi ed 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 fl ames, 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, fl ame, sparks, or other sources or ignition. Else, it may explode and cause injury or death.
• For R32 model, use pipes, fl are nut and tools which is specifi ed for R32 refrigerant. Using of existing (R22) piping, fl are 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, confi rm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant contacts with fi re.
• Comply with national gas regulations.

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 fl ammable gas may occur. In case gas leaks and accumulates at surrounding of the unit, it may cause of fi re.
• 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 fl uorinated 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 PARTS

Indoor Unit

Outdoor Unit

Air fi lters
Clean every 2 weeks.

1. Open the air inlet grille.
2. Remove the fi lters if they are on the air fi lter.
3. Vacuum or wash and then dry them.
4. Reinstall the fi lters and close the air inlet grille.

Ultra Fresh fi lter
Maintaining your strong purifying and revitalizing fi lter. Clean every 6 months or when dust covers the fi lter.

1. Shake and blow with normal air or
2. Rinse the fi lter in water and dry it in under sunlight or in air.(Do not wash or rinse with high pressure water)
3. Replace every 3 years or sooner. (P/N: RB-A701FE)

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 fi lters to improve the purifying and deodorizing performance of your air conditioner.

ININSTSTALALLALATIONTION DIA DIAGRAM OF INDOOR AGRAM OF INDOOR AND

OUTDOOR UNITSND OUTDOOR UNITS

Optional Installation Parts

A

| Refrigerant piping

Liquid side : Ø6.35 mm Gas side    : Ø12.70 mm

|

One each

B

| Pipe insulating material (polyethylene foam, 8 mm thick)|

1

C

|

Putty, PVC tapes

| One each

Fixing bolt arrangement of outdoor unit

• Secure the outdoor unit with fi xing 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 13 and cap water proof 14 to the bottom plate of the outdoor unit before installing it.

w When using a multi-system outdoor unit, refer to the installation manual provided with the model concerned.

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 control

• 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 control in a place exposed to direct sunlight or close to a heating source such as a stove.
• Keep the remote control 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 control should be determined as shown below.

Cutting a Hole and Mounting Installation Plate

Cutting a hole
When installing the refrigerant pipes from the rear

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

When the installation plate is directly mounted on the wall

1. Securely fi t 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 fi gure.
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 fi rmly 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.

How to Connect Remote Controller for Wire Operation

For indoor unit

1. Open two screw caps and securely remove two screws at the front panel.
2. Slightly open the lower part of the front panel then pull the upper part of the front panel toward you to remove it as shown on fi gure 1.
3. Arrange the control wire as detail and specifi cation as shown on fi gure 2.
4. Securely connect the control wire to terminal of Display unit as shown on fi gure 3 (tighten fi rmly but not over 0.12 N·m (0.01 kgf·m)).
5. Set the control wire out from indoor unit same portion as power supply and connecting cable as shown on fi gure 3. (Notch for wire out)
6. Reassembly the indoor unit by reverse process of 1 to 2.

• Wire size 28-22AWG or 0.08-0.32 mm2 Outer diameter not over 4.7 mm, control wire length 30 m. or less.

For remote controller

1. Remove cover of remote controller by sliding down and take it out.
2. If batteries are exist, please take them out. The combination of using wire controller and batteries may cause of batteries explosion.
3. Make hole for insert control wire by use screwdriver break the plastic for cover hole as shown on fi gure 4.
4. Insert control wire from rear side of remote controller as shown on fi gure 5.
5. Fix control wire which arrange as shown on fi gure 6 and 7 to terminal by provided screws (tighten fi rmly but not over 0.25 N·m (0.03 kgf·m)).
6. Set control wire through gutter way at rear side of remote controller as shown on fi gure 8.
7. Fix provided screw (Ø3.1×16L) on the wall to hang remote controller as shown on fi gure 9.
8. Mark and arrange hole for fi x below screw (Ø3.1×25L) as shown on fi gure 9.
9. Assembly battery cover which provided with accessory bag then use provide screw (Ø3.1×25L) to fi x battery cover together with wall as shown on fi gure ! (tighten fi rmly but not over 0.15 N·m (0.02 kgf·m)).
10. Reassembly cover of remote controller.

• Terminals for wiring can be either on right (type A) or left (type B), depending on the controller packed in carton.

*Remark :

1. Recommend to use double insulation lead wire for connect remote control and air conditioner.
2. For wire operation, 1 remote control can control only 1 indoor unit.
3. In wire operation, remote controller will return to initial condition (PRESET, TIMER and CLOCK will return to initial condition) when user shutdown power supply of air conditioner.

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.)

1. Die-cutting front panel slit
   Cut out the slit on the left or right side of the front panel for the left or right connection and the slit on the bottom left or right side of the front panel for the bottom left or right connection with a pair of nippers.

2. Changing drain hose
   For leftward connection, bottom-leftward connection and rear-leftward connection’s piping, it is necessary to change the drain hose and drain cap.

How to remove the drain hose

• The drain hose can be removed by removing the screw securing the drain hose and then pulling out the drain hose.
• When removing the drain hose, be careful of any sharp edges of steel plate. The edges can injuries.
• To install the drain hose, insert the drain hose fi rmly until the connection part contacts with heat insulator, and then secure it with original screw.

How to remove the drain cap
Clip the drain cap by needle-nose pliers and pull out.

How to fi x the drain cap

1. Insert hexagon wrench (4 mm) in a center head.
2. Firmly insert the drain cap. Do not apply lubricating oil (refrigerant machine oil) when inserting the drain cap. Application causes deterioration and drain leakage of the plug.

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

In case of right or left piping
After scribing slits inside of the front panel with a knife or a making-off pin, cut them with a pair of nippers or an equivalent tool.

In case of bottom right or bottom left piping
After scribing slits inside of the front panel with a knife or a making-off pin, cut them with a pair of nippers or an equivalent tool.

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 (fi gure)

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.

CAUTION

• Bind the auxiliary pipes (two) and connecting cable with facing tape tightly. In case of leftward piping and rear-leftward piping, bind the auxiliary pipes (two) only with facing tape.
• 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. Pass the pipe through the hole in the wall and hook the indoor unit on the installation plate at the upper hook.
2. Swing the indoor unit to right and left to confi rm that it is fi rmly hooked up on the installation plate.
3. 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 confi rm that it is fi rmly 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 specifi ed parts.

Information
The lower part of indoor unit may fl oat, due to the condition of piping and you cannot fi x it to the installation plate. In that case, use the ! screws provided to fi x the unit and the installation plate.

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.
  Models| RAS-24E2AVG- TR
  ---|---
  Chargeless| Up to 15 m
  Maximum length| 20 m
  Additional refrigerant charging| 16 – 20 m (20 g / 1 m)
  Maximum refrigerant charging| 1.28 kg
• The allowable height of outdoor unit installation site.
  Models| RAS-24E2AVG- TR
  ---|---
  Maximum height| 12 m
• 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 sulfi de 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 effi ciently. 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-proofi ng by installing the water-proof rubber caps in the 2 elongated holes on the base plate of the outdoor unit. [How to install the water-proof rubber caps]
2. Place four fi ngers 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 (with 16 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 fl atten and prevent water from draining.

Refrigerant Piping Connection

Flaring

1. Cut the pipe with a pipe cutter.
2. Insert a fl are nut into the pipe and fl are the pipe.
   • Projection margin in fl aring : 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 fared part when removing burrs.
• Flare processing under the condition of scratches on the inner surface of fare processing part will cause refrigerant gas leak.

Tightening connection
Align the centers of the connecting pipes and tighten the fl are nut as far as possible with your fi ngers. Then tighten the nut with a spanner and torque wrench as shown in the fi gure.

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

Tightening torque of fl are pipe connections
The operating pressure of R32 is higher than that of R22 (approx. 1.6 times). It is therefore necessary to fi rmly tighten the fl are pipe connecting sections (which connect the indoor and outdoor units) up to the specifi ed 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-fl ow prevention function so that inside oil of the pump does not fl ow 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 confi rm 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 fared joints are not allowed indoors. When mechanical connectors are reused indoors, sealing parts shall be renewed. When fared joints are reused indoors, the fare 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 specifi cation)
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 and 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

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.

H07RN-F or 60245 IEC66 (2.0 mm2 or more)

Connecting cable

Wiring Connection

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

1. Remove the air inlet grille.
   Open the air inlet grille upward and pull it toward you.

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, rear plate bushing and air inlet grille on the indoor unit.

How to install the air inlet grille on the indoor unit

• When attaching the air inlet grille, the contrary of the removed operation is performed.

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 identifi ed 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

Power Supply Input at Outdoor Unit Terminal Block (Recommend)

Indoor Unit

Connecting cable
Connecting cable connect to 1 2 3

Stripping length of the connecting cable

Outdoor Unit

Power Supply Input at Outdoor Unit Terminal Block (Recommend)

Indoor Unit

Power supply cable Power supply cable connect to L N

Stripping length of the power supply cable

Connecting cable Connecting cable connect to 1 2 3

Stripping length of the connecting cable

Outdoor Unit

Power Supply Input Wiring Diagram

Power input at Indoor Terminal Block (Optional)

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 fi rmly.
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 fi xed wiring : A switch which disconnects all poles and has a contact separation at least 3 mm must be incorporated in the fi xed wiring.

OTHERS

Gas Leak Test

Check the fl are 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 the Remote Control by the tip of the pencil. “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.

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 sound 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 sound 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

  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.

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