Panasonic S22NKU-1, S18NKU-1 Installation Manual

PRINTED IN MALAYSIA

F615166

ENGLISH

Is there any gas leakage at ﬂ are nut

connections?

Has the heat insulation been carried out at ﬂ are

nut connection?

Is the connecting cable being ﬁ xed to terminal

board ﬁ rmly?

Is the connecting cable being clamped ﬁ rmly?

Is the drainage ok?

(Refer to “Check the drainage” section)

Is the earth wire connection properly done?

Is the indoor unit properly hooked to the

installation plate?

Is the power supply voltage complied with rated

value?

Is there any abnormal sound?

Is the cooling operation normal?

Is the thermostat operation normal?

Is the remote control’s LCD operation normal?

Is the Air purifying ﬁ lter installed?

CHECK ITEMS

Connecting The Piping to Indoor



Use shock absorber during pull out the piping to protect the intake grille from damage

Piping

Intake grille

Shock absorber

Piping

F615166

•

Read the following “SAFETY PRECAUTIONS” carefully before installation.

•

Electrical work must be installed by a licensed electrician. Be sure to use the correct rating of the power plug and main circuit for the model to be installed.

•

The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the seriousness is classiﬁ ed by the following indications.

The items to be followed are classiﬁ ed by the symbols:

•

Carry out test running to conﬁ rm that no abnormality occurs after the installation. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.

Required tools for Installation Works

INDOOR UNIT

HOW TO FIX INSTALLATION PLATE

The mounting wall must be strong and solid enough to prevent it from the vibration.

SELECT THE BEST LOCATION

(Refer to “Select the best location” section)

The center of installation plate should be at more than 1 at right and left of the wall. The distance from installation plate edge to ceiling should more than 2. From installation plate left edge to unit’s left side is 3. From installation plate right edge to unit’s right is 4.

b : For left side piping, piping connection for liquid should be about 5 from this line.

: For left side piping, piping connection for gas should be about 6 from this line.

1. Mount the installation plate on the wall with 5 screws or more (at least 5 screws). (If mounting the unit on the concrete wall, consider using anchor bolts.)

•

Always mount the installation plate horizontally by aligning the marking-off line with the thread and using a level gauge.

2. Drill the piping plate hole with ø2

/4" hole-core drill.

•

Line according to the left and right side of the installation plate. The meeting point of the extended line is the center of the hole. Another method is by putting measuring tape at position as shown in the diagram above. The hole center is obtained by measuring the distance namely 5

/16" for left and right hole respectively.

•

Drill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor side.

INDOOR UNIT INSTALLATION

OUTDOOR UNIT

SELECT THE BEST LOCATION

(Refer to “Select the best location” section)



After selecting the best location, star t installation to Indoor/Outdoor Unit Installation Diagram.

1. Fix the unit on concrete or rigid frame ﬁ rmly and horizontally by bolt nut (ø

/32").

2. When installing at roof, please consider strong wind and earthquake. Please fasten the installation stand ﬁ rmly with bolt or nails.

INSTALL THE OUTDOOR UNIT

Rear view for left piping installation

Drain cap

Drain hose

Adjust the piping slightly downwards.

Drain hose

Connecting cable

•

How to pull the piping and drain hose out, in case of the embedded piping

PVC tube for drain hose

Indoor unit

/32"

Piping

Cable

Apply putty or caulking material to seal the wall opening.

Connecting cable

Piping

More than

PVC tube (VP-65) for piping and connecting cable

PVC tube for drain hose (VP-30)

PVC tube for drain hose (VP-20)

More than 27

/16"

•

In case of left piping how to insert the connecting cable and drain hose.

Cable

45°

Drain hose

Piping

Drain hose from main unit

(For the right piping, follow the same procedure)

Sleeve for piping hole

Drain hose

Piping

Connecting cable

More than 45

/32"

CUTTING AND FLARING THE PIPING

1. Please cut using pipe cutter and then remove the burrs.

2. Remove the burrs by using reamer. If burrs is not removed, gas leakage may be caused. Turn the piping end down to avoid the metal powder entering the pipe.

3. Please make ﬂ are after inserting the ﬂ are nut onto the copper pipes.

1. To cut

When properly ﬂ ared, the internal surface of the ﬂ are will evenly shine and be of even thickness. Since the ﬂ are part comes into contact with the connections, carefully check the ﬂ are ﬁ nish.

Improper ﬂ aring 

Inclined

Surface

damaged

Cracked

Uneven

thickness

3. To ﬂ are

Bar

Red arrow mark

Handle

Core

Yok e

Clamp handle

Bar

0 –

/32”

Copper pipe

Reamer

2. To remove burrs

Point down

Pipe

TO DRILL A HOLE IN THE WALL AND INSTALL A SLEEVE OF PIPING

/32"

Putty or caulking compound

ø2

/4" through hole

Indoor

Outdoor

Sleeve for tube assembly

Approx. 7/32" - 9/32"

Bushing for tube assembly

Wall

1. Insert the piping sleeve to the hole.

2. Fix the bushing to the sleeve.

3. Cut the sleeve until it extrudes about

/32" from the wall.

4. Finish by sealing the sleeve with putty

or caulking compound at the ﬁ nal stage.

CONNECT THE CABLE TO THE INDOOR UNIT

1. The inside and outside connecting cable can be connected without

removing the front grille.

2. Unscrew the conduit cover and ﬁ x the conduit connector to conduit

cover with lock nut, then secure it against chassis.

3. Connecting wire between indoor unit and outdoor unit should be

UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes.

•

Ensure the colour of wires of outdoor unit and terminal number are the same as the indoor's repectively.

This equipment must be properly earthed.

•

Earth lead wire shall be Yellow/Green (Y/G) in colour and shall be longer than other lead wires as shown in the ﬁ gure for electrical safety in case of the slipping.

Earth Wire longer than others AC wires for safety reason

Terminal Board

Holder

Indoor and outdoor cable connection

Wire stripping

/32"

or more

(gap between

wires)

PROHIBITED

Conductor

over inserted

No loose strand when inserted

Indoor/outdoor connecting terminal board

13/32” ± 1/16”

WIRE STRIPPING AND CONNECTING REQUIREMENT

Conductor

fully inserted

PROHIBITED

Conductor not

fully inserted

Terminals on the indoor unit 1 2 3

Colour of wires (connecting wire)

Terminals on the outdoor unit 1 2 3

Please follow the steps below to take out front grille if necessary such as when servicing.

1. Set the vertical airﬂ ow direction louvers to the horizontal position.

2. Slide down the 2 caps on the front grille as shown in the illustration at right, and then remove the 2 mounting screws.

3. Pull the lower section of the front grille towards you to remove the front grille.

The below operations will be performed by pressing the “AUTO” switch.

1. AUTO OPERATION MODE

The Auto operation will be activated immediately once the Auto Switch is pressed

and release before 5 sec..

2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)

The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec. A “pep” sound will occur at the ﬁ fth sec., in order to identify the starting of Test Run operation.

3. REMOTE CONTROLLER RECEIVING SOUND ON/OFF

The ON/OFF of Remote controller receiving sound can be change over by the following steps: a) Press AUTO switch continuously until “pep pep pep pep” sound is heard (about 16 sec.). b) Release the Auto switch button. c) Press the remote controller “AC RESET” button once, “pep” sound will occur. d) Press Auto switch again. Every time Auto switch is pressed (within 60 sec. interval), the remote controller receiving sound status will be reversed between ON and OFF. Long “peep” sound indicates that remote controller receiving sound is ON. Short “pep” sound indicates that remote controller receiving sound is OFF.

Cap

Vane

Front grille

•

Open front panel and remove air ﬁ lters. (Drainage checking can be carried out without removing the front grille.)

•

Pour a glass of water into the drain tray-styrofoam.

•

Ensure that water ﬂ ows out from drain hose of the indoor unit.

•

Operate the unit at cooling operation mode for ﬁ fteen minutes or more.

•

Measure the temperature of the intake and discharge air.

•

Ensure the difference between the intake temperature and the discharge is more than 46.4°F.

Discharge air

Cap

Screw

(Move the vane to upward)

Vane

1 Philips screw driver 2 Level gauge 3 Electric drill, hole core drill (ø2

/4”)

4 Hexagonal wrench (

/32”) 5 Spanner 6 Pipe cutter

7 Reamer 8 Knife 9 Gas leak detector 10 Measuring tape 11 Thermometer 12 Megameter

13 Multimeter 14 Torque wrench

13.3 Ibf.ft

31.0 Ibf.ft

40.6 Ibf.ft

47.9 Ibf.ft

73.8 Ibf.ft 15 Vacuum pump 16 Gauge manifold

Wall

Installation plate 1

2 screw

More than 1

Measuring Tape

Indoor unit

/32"

/16"

/4"

/16"

marking

PUSH

To take out the unit, push the

marking at the bottom unit, and pull it slightly towards you to disengage the hooks from the unit.

Guide surface

Connecting cable

About

" - 3

Connecting cable

Gas side piping

Liquid side piping

Drain hose

Drain traystyrofoam

Cover for the bottom piping

Tape it with piping in a position as mentioned

in Fig. below.

Cover for the right piping

Piping

Drain hose

Cover for the left piping

Cover for the

bottom piping

Cover for the bottom piping

Tape it with

piping in a position as

mentioned in

Fig. below.

Piping

Drain hose

Cover for the left piping

1. Press the lower left and right side of the unit against the installation plate until hooks engages with their slot (sound click).

Installation plate

Unit’s hook

Cover for piping

In case of the cover is cut, keep the cover at the rear of chassis as shown in the illustration for future reinstallation. (Left and 2 bottom covers for piping.)

How to keep the cover

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by using POLY-E FOAM with thickness 1/4" or above.

PIPING INSULATION

Hook the indoor unit onto the upper portion of installation plate. (Engage the indoor unit with the upper edge of the installation plate). Ensure the hooks are properly seated on the installation plate by moving it in left and right.

Drain hose

Sleeve for piping hole

Indoor unit

Hooks at installation plate

Piping

1. Open the front panel.

2. Remove the air ﬁ lters.

3. Put the air purifying ﬁ lter into place as shown in illustration at right.

CONNECT THE PIPING

Please make ﬂ are after inserting ﬂ are nut (locate at joint portion of tube assembly) onto the copper pipe. (In case of using long piping)

Connect the piping

•

Align the center of piping and sufﬁ ciently tighten the ﬂ are nut with ﬁ ngers.

•

Further tighten the ﬂ are nut with torque wrench in speciﬁ ed torque as stated in the table.

Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge. Make ﬂ are after inserting the ﬂ are nut (locate at valve) onto the copper pipe. Align center of piping to valve and then tighten with torque wrench to the speciﬁ ed torque as stated in the table.

Torque wrench

Spanner or Wrench

CONNECT THE CABLE TO THE OUTDOOR UNIT

1. Remove control board cover (Resin and Metal).

2. Remove particular plate.

3. Remove plugs.

4. Fix the conduit connectors to the knockout holes with lock-nuts, then secure them against the side panel.

5. All wires pass through conduits & particular plate’s opening hole.

6. Connecting wire between indoor unit and outdoor unit should be UL listed or CSA approved 4 conductor wires minimum AWG16 in accordance with local electric codes.

7. Wire connection to the power supply (208/230V 60Hz) through circuit breaker.

•



Connect the UL listed or CSA approved wires minimum AWG12 to the terminal board, and connect the other end of the wires to ELCB / GFCI.

8. Connect the power supply cord and connecting wire between indoor unit and outdoor unit according to the diagram below.

9. Secure the wire onto the control board with the holder (clamper).

10. After completing wiring connections, reattach the particular plate and control board cover (metal and resin) to the original position with the screws.

11. For wire stripping and connection requirement, refer to instruction 5 of indoor unit.

This equipment must be properly earthed.

•

Earth lead wire shall be Yellow/Green (Y/G) in colour and longer than other lead wires for electrical safety in case of the slipping.

More than

Air purifying ﬁ lter 7

Air ﬁ lter

/32"

or more

(Left and right are identical)

• Carry out insulation after checking for gas leaks and secure with vinyl tape.



Vinyl tape

• This illustration is for

explanation purposes only.

The indoor unit will actually face

a different way.

or more

It is advisable to avoid more than 2 blockage directions. For better ventilation & multiple-outdoor installation, please consult authorized dealer/specialist.

Installation plate 1

Sleeve (

)

Bushing-Sleeve (

)

Bend the pipe as closely on the wall as possible, but be careful that it doesn’t break.

Saddle (

)

Example: For S18NKU-1 If the unit is installed at 41 ft distance, the quantity of additional refrigerant

should be 1.64 oz .... (41 - 32.8) ft x 0.2 oz/ft = 1.64 oz.

Conduit (Power supply cord (

))

Attached accessories

Control Board cover

Remote control holder ﬁ xing screws

Remote control holder

Remote control

Additional drain hose

Gas side piping (

)

Conduit (Connecting cable)

Putty (

)

(Gum Type Sealer)

Installation parts you should purchase ()

Vinyl tape (wide) ()

• Apply after carrying out a drainage test.

• To carry out the drainage test, remove the air ﬁ lters and pour water into the heat exchanger.

Liquid side piping (

)

Chassis

Conduit Connector

Conduit Cover

Lock Nut

Rear Side of Indoor Unit

Terminal on the indoor unit

Colour of wires (connecting wire)

Terminal on the outdoor unit

(Power supply cord)

1 2 3

L1 L2 1 2 3

POWER SUPPLY

Holder

Power supply

cord

Indoor &

outdoor

cable

connection

Terminal

Board

Earth wire longer than others AC wires for safety reason

Control Board Cover (Metal)

Lock Nuts

Knockout Holes

Plugs

Connectors

Control Board Cover (Resin)

Side Panel

Connecting Wires

Particular

Plate

Particular Plate’s

opening holes

Pressure test to system to 400 PSIG with dry nitrogen, in stages. Thoroughly leak check the system. If the pressure holds, release the nitrogen and proceed to section 4.

SAFETY PRECAUTIONS

WARNING

This indication shows the possibility of causing death or serious injury.

CAUTION

This indication shows the possibility of causing injury or damage to properties only.

Symbol with white background denotes item that is PROHIBITED.

Symbol with dark background denotes item that must be carried out.

WARNING

Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit on veranda of a high rise building, child may climb up to outdoor unit and cross over the handrail causing an accident.

Do not use unspeciﬁ ed cord, modiﬁ ed cord, joint cord or extension cord for power supply cord. Do not share the single outlet with other electrical appliances. Poor contact, poor insulation or over current will cause electrical shock or ﬁ re.

Do not tie up the power supply cord into a bundle by band. Abnormal temperature rise on power supply cord may happen.

Do not insert your ﬁ ngers or other objects into the unit, high speed rotating fan may cause injury.

Do not sit or step on the unit, you may fall down accidentally.

Keep plastic bag (packaging material) away from small children, it may cling to nose and mouth and prevent breathing.

When installing or relocating air conditioner, do not let any substance other than the speciﬁ ed refrigerant, eg. air etc. mix into refrigeration cycle (piping). Mixing of air etc will cause abnormal high pressure in refrigeration cycle and result in explosion, injury etc.

Do not add or replace refrigerant other than speciﬁ ed type. It may cause product damage, burst and injury etc.

●

For R410A model, use piping, ﬂ are nut and tools which is speciﬁ ed for R410A 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 or copper pipes used with R410A must be more than 1/32". Never use copper pipes thinner than 1/32".

●

It is desirable that the amount of residual oil is less than 0.0008 oz/ft..

Engage authorized dealer or specialist for installation. If installation done by the user is incorrect, it will cause water leakage, electrical shock or ﬁ re.

Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electrical shock or ﬁ re.

Use the attached accessories parts and speciﬁ ed parts for installation. Otherwise, it will cause the set to fall, water leakage, ﬁ re or electrical shock.

Install at a strong and ﬁ rm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done, the set will drop and cause injury.

For installation work, follow all electrical, building, plumbing, local codes, regulations and these installation instructions. If electrical circuit capacity is not enough or a defect is found in electrical work, it will cause electrical shock or ﬁ re.

Do not use spliced wires for indoor / outdoor connection cable. Use the speciﬁ ed indoor / outdoor connection cable, refer to instruction 5 INDOOR/OUTDOOR UNIT ELECTRICAL WIRING and connect tightly for indoor/outdoor connection. Clamp the cable so that no external force will have impact on the terminal. If connection or ﬁ xing is not perfect, it will cause heat-up or ﬁ re at the connection.

Wire routing must be properly arranged so that control board cover is ﬁ xed properly. If control board cover is not ﬁ xed perfectly, it will cause ﬁ re or electrical shock.

This equipment must installed with an Earth Leakage Circuit Breaker (ELCB) or Ground Fault Current Interrupter (GFCI) or Appliance Leakage Current Interrupter (ALCI) that has been certiﬁ ed by an NRTL Certiﬁ ed Testing Agency and that is suitable for the voltages and amperages involved. Otherwise, if may cause electrical shock and ﬁ re in case of equipment breakdown.

During installation, install the refrigerant piping properly before running the compressor. Operation of compressor without ﬁ xing refrigeration piping and valves at opened condition will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.

During pump down operation, stop the compressor before removing the refrigeration piping. Removal of refrigeration piping while compressor is operating and valves are opened will cause suck-in of air, abnormal high pressure in refrigeration cycle and result in explosion, injury etc.

Tighten the ﬂ are nut with torque wrench according to speciﬁ ed method. If the ﬂ are nut is over-tightened, after a long period, the ﬂ are may break and cause refrigerant gas leakage.

After completion of installation, conﬁ rm there is no leakage of refrigerant gas. It may generate toxic gas when the refrigerant comes into contact with ﬁ re.

Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when the refrigerant comes into contact with ﬁ re.

This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and telephone. Otherwise, it may cause electrical shock in case of equipment breakdown or insulation breakdown.

CAUTION

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 ﬁ re.

Do not release refrigerant during piping work for installation, re-installation and during repairing a refrigeration parts. Take care of the liquid refrigerant, it may cause frostbite.

Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.

Do not touch the sharp aluminium ﬁ n, sharp parts may cause injury.

Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage the furniture.

Select an installation location which is easy for maintenance.

Power supply connection to the room air conditioner. Power supply cord shall be UL listed or CSA approved 3 conductor with minimum AWG12 wires. Power supply point should be in an easily accessible place for power disconnection in case of emergency. In some countries, permanent connection of this air conditioner to the power supply is prohibited. Fix power supply connection to a circuit breaker for the permanent connection. Use NRTL approved fuse or circuit breaker (rating refers to name plate) for the permanent connection.

Installation work. It may take two people to carry out the installation work.

Applicable piping kit

Piping size

Gas Liquid

CZ-3F5, 7BP

3/8" (9.52 mm) 1/4" (6.35 mm)

CZ-4F5, 7, 10BP

1/2" (12.7 mm) 1/4" (6.35 mm)

CZ-52F5, 7, 10BP 5/8" (15.88 mm)

1/4" (6.35 mm)

 Do not install the unit in excessive oil fume areas such as kitchens,

workshops etc.

 There should not be any heat source or steam near the unit.  There should not be any obstacles blocking the air circulation.  A place where air circulation in the room is good.  A place where drainage can be easily done.  A place where noise prevention is taken into consideration.  Do not install the unit near a doorway.  Ensure the spaces indicated by arrows from the wall, ceiling, fence or

other obstacles.

 Recommended installation height for indoor unit shall be at least 8.2 ft.

 If an awning is built over the unit to prevent direct sunlight or rain,

be careful that heat radiation from the condenser is not obstructed.

 There should not be any animal or plant which could be affected by

hot air discharged.

 Keep the spaces indicated by arrows from wall, ceiling, fence or

other obstacles.

 Do not place any obstacles which may cause a short circuit of the

discharged air.

 If piping length is over the [piping length for additional gas],

additional refrigerant should be added as shown in the table.

 Recommended installation height for outdoor unit should be above

the seasonal snow level.

INDOOR UNIT

OUTDOOR UNIT

SELECT THE BEST LOCATION

Model

Capacity

(Btu/h)

Piping size

Std.

Length

(ft)

Max.

Eleva-

tion

(ft)

Min. Piping Length

(ft)

Max. Piping Length

(ft)

Additional

Refrige-

rant (oz/ft)

Piping Length for add. gas (ft)

Gas Liquid

S18NKU-1

17100 1/2"

1/4"

16.4

49.2 9.8 65.6 0.2 32.8

S22NKU-1

21000 5/8" 49.2 9.8 65.6 0.2 32.8

Piping direction Attention not to bend

up drain hose

(Front side)

Right Rear

Right bottom

Left Rear

Left bottom

Left

Indoor/Outdoor Unit Installation Diagram

Insulation of piping connections

Attaching the remote control holder to the wall

Model

Dimension

123456

S18NKU-1, S22NKU-1 23

/32"3 7/32"6 1/2"6 7/32"6 21/32"8 5/8"

CAUTION

When the wall is hollow, please be sure to use the sleeve for tube assembly to prevent dangers caused by mice biting the connecting cable.

CAUTION

Do not turn over the unit without it’s shock absorber during pull out the piping. It may cause intake grille damage.

1. FOR THE RIGHT REAR PIPING

2. FOR THE RIGHT BOTTOM PIPING

3. FOR THE EMBEDDED PIPING

Step-1

Pull out the Indoor piping

Step-2

Install the Indoor Unit

Step-3

Secure the Indoor Unit

Step-4

Insert the connecting cable

Step-1

Pull out the Indoor piping

Step-2

Install the Indoor Unit

Step-3

Insert the connecting cable

Step-4

Secure the Indoor Unit

Step-1

Replace the drain hose

Step-2

Bend the embedded piping

• Use a spring bender or equivalent to bend the piping so that the piping is not crushed.

Step-3

Pull the connecting cable into Indoor Unit

• The inside and outside connecting cable can be connected without removing the front grille.

Step-4

Cut and ﬂ are the embedded piping

• When determining the dimensions of the piping, slide the unit all the way to the left on the installation plate.

• Refer to the section “Cutting and ﬂ aring the piping”.

Step-5

Install the Indoor Unit

Step-6

Connecting the piping

• Please refer to “Connecting the piping” column in outdoor unit section. (Below steps are done after connecting the outdoor piping and gas-leakage conﬁ rmation.)

Step-7

Insulate and ﬁ nish the piping

• Please refer to “Piping and ﬁ nishing” column of outdoor section and “Insulation of piping connection” column as mentioned in indoor/outdoor unit installation.

Step-8

Secure the Indoor Unit

Right Rear piping

Right and Right Bottom piping

Install the indoor unit

Secure the Indoor Unit

Insert the connecting cable

(This can be used for left rear piping and bottom piping also.)

Replace the drain hose

Model A B C D

S18NKU-1, S22NKU-1

24 1/8" 5 5/32" 5/8" 14 3/16"

INSTALLATION OF AIR PURIFYING FILTER

HOW TO TAKE OUT FRONT GRILLE

When reinstalling the front grille, ﬁ rst set the vertical airﬂ ow direction louver to the horizontal position and then carry out above steps 2 - 3 in the reverse order.

AUTO SWITCH OPERATION

CHECK THE DRAINAGE

EVALUATION OF THE PERFORMANCE

Connecting The Piping to Outdoor

Gas Leak Checking

Do not overtighten, over tightening may cause gas leakage.

Piping size Torque

1/4" 13.3 Ibf.ft

3/8" 31.0 Ibf.ft

1/2" 40.6 Ibf.ft

5/8" 47.9 Ibf.ft

3/4" 73.8 Ibf.ft

No. Accessories part Qty. No. Accessories part Qty.

Installation plate

Remote control holder

Installation plate ﬁ xing screw

Remote control holder ﬁ xing screw

Remote Control

Air purifying ﬁ lter

Battery

1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way valve.

2. Connect the micron gauge between vacuum pump and service port of outdoor units.

3. Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull down to a value of 500 microns.

4. To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off the vacuum pump.

5. Disconnect the vacuum pump house from the service port of the 3-way valve.

6. Tighten the service port caps of the 3-way valve at a torque of 13.3 Ibf.ft with a torque wrench.

7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “Open” using a hexagonal wrench (5/32").

8. Mount valve caps onto the 2-way valve and the 3-way valve.

•

Be sure to check for gas leakage.

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the following procedure.

EVACUATION OF THE EQUIPMENT

Gas side

Liquid side

Outdoor unit

Three-way valve

Indoor unit

Vacuum

pump

CAUTION

•

If micron gauge value does not descend 500 microns, take the following measures:

- If the leak stops when the piping connections are tightened fur ther, continue working from step 3.

- If the leak does not stop when the connections are retightened, repair location of leak.

- Do not release refrigerant during piping work for installation and reinstallation.

- Be careful with the liquid refrigerant, it may cause frostbite.

Two-way valve