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Outdoor Unit

Installation Manual

2

Installation / service tools

Changes in the product and components

In air conditioners using R32, in order to prevent any other refrigerant from being accidentally charged, the service port diameter size of the outdoor unit service 
valve has been changed. (1/2 UNF 20 threads per inch)
•  In order to increase the pressure resisting strength of the refrigerant piping, 

fl

 are processing diameter and opposing 

fl

 are nuts sizes have been changed. (for 

copper pipes with nominal dimensions 1/2 and 5/8)

Gauge manifold for R32
Charge hose for R32
Vacuum pump for R32
Gas leakage detector for R32

Phillips screwdriver
Level
Scale
Utility knife

Pipe cutter
Torque wrench
Wrench (or spanner)
Reamer

Flare tool for R32
4 mm hexagonal wrench

3

Speci

fi

 cations

RAS-2M10U2AVG-E

RAS-2M14U2AVG-E

RAS-2M18U2AVG-E

RAS-3M18U2AVG-E

Operating conditions

*1

Cooling operation

–10 to 46 °C

Dry operation

–10 to 46 °C

Heating operation

–20 to 24 °C

Connecting pipe length

Minimum for 1 unit

(m)

2

2

2

2

Maximum for 1 unit

(m)

15

20

20

25

Maximum for total unit

(m)

20

30

30

50

Height difference

(m)

10

10

10

10

No additional refrigerant charge (m)

20

30

30

50

The speci

fi

 cations for performance of this air conditioner differs depending on the combination of the indoor units which are operated.

*1 If the air conditioner is used in conditions other than the above, the safety protection functions may be activated.

* Example of indoor unit class: RAS-B10UFV-E1 is abbreviated as “10”.

Indoor unit class

Standard connecting pipe diameter

RAS-2M10U2AVG-E

RAS-2M14U2AVG-E

RAS-2M18U2AVG-E

RAS-3M18U2AVG-E

Unit C

07 or 10 or 13

6.35, 9.52 mm

Unit B

07 or 10 or 13 or 16

6.35, 9.52 mm

6.35, 9.52 mm

6.35, 9.52 mm

*3

6.35, 9.52 mm

*3

Unit A

07 or 10 or 13 or 16

6.35, 9.52 mm

6.35, 9.52 mm

6.35, 9.52 mm

*3

6.35, 12.7 mm

*2

Total

20 (RAS-2M10U2AVG-E)

26 (RAS-2M14U2AVG-E)
32 (RAS-2M18U2AVG-E)
36 (RAS-3M18U2AVG-E)

All combinations that do not exceed the “Total” number can be installed.
2 or more indoor units must be connected to an outdoor unit.
When 2 indoor units are connected to an outdoor unit, note that some combinations of indoor units are not compatible.
For the further details, refer to the catalogue.
*2 Need the reducer (07, 10, 13 class 12.7 to 9.52 mm).
*3 Need the expander (16 class 9.52 to 12.7 mm).
• Locally procured.

4

Installation parts, accessories

Installation parts  *Locally procured

Parts name

Speci

fi

 cations

Q’ty

*4  Refrigerant piping covered with insulating material (Polyethylene 

foam, 6 mm thick) When duct-type or cassette-type unit is to 
be installed, it shall be covered with thicker insulating material 
(Polyethylene foam, 10 mm thick)

Refrigerant piping

*4

Indoor unit

(abbreviation)

Liquid side

(O.D.)

Gas side (O.D.)

1 ea.

07, 10, 13

6.35 mm

9.52 mm

16

6.35 mm

12.7 mm

Putty, PVC tapes

1 ea.

Accessories

Installation 
manual

1

Rubber cap
(Water-proof)

2

CD-ROM
(Installation 
manual)

1

F-GAS label

1

Drain nipple

1

Product 
speci

fi

 cation

1

Summary of Contents for 13340

Page 1: ...oor Unit AIR CONDITIONER MULTI SPLIT TYPE Model name RAS 2M10U2AVG E RAS 2M14U2AVG E RAS 2M18U2AVG E RAS 3M18U2AVG E NOTE Descriptions about operations for the 3 indoor units in this manual are not applicable to RAS 2M10U2AVG E RAS 2M14U2AVG E and RAS 2M18U2AVG E R32 ...

Page 2: ...9 Test run 12 10 Pump down Operation 14 11 Troubleshooting 14 12 Appendix 15 Please read this Installation Manual carefully before installing the Air Conditioner This Manual describes the installation method of the outdoor unit For installation of the indoor unit refer to the Installation Manual attached to the indoor unit IMPORTANT NOTICE For details on how to install the indoor units refer to th...

Page 3: ...cates that incorrect use of this unit can result in a high possibility of severe injury 1 or death 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 2 or property damage 3 1 A severe injury refers to blindness injury burns hot or cold electrical shock bone fracture or poisoning that l...

Page 4: ... WELL AS THE ADOPTION OF THIS NEW REFRIGERANT REFRIGERATING MACHINE OIL HAS ALSO BEEN CHANGED THEREFORE DURING INSTALLATION WORK BE SURE THAT WATER DUST FORMER REFRIGERANT OR REFRIGERATING MACHINE OIL DOES NOT ENTER THE REFRIGERATION CYCLE OF A NEW REFRIGERANT AIR CONDITIONER TO AVOID MIXING REFRIGERANT AND REFRIGERATING MACHINE OIL THE SIZES OF CHARGING PORT CONNECTING SECTIONS ON THE MAIN UNIT A...

Page 5: ...TING 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 PRES...

Page 6: ...d the manual A dedicated circuit and the rated voltage must be used Insufficient power supply or improper installation may cause electrical shock or fire Use a cabtyre cable to connect wires in the indoor outdoor units Midway connection stranded wire and single wire connections are not allowed Improper connection or fixing may cause a fire Wiring between the indoor unit and outdoor units must be w...

Page 7: ...st or injury Do not modify the power cable connect the cable midway or use a multiple outlet extension cable Doing so may cause contact failure insulation failure or excess current resulting in fire or electrical shock If you detect any damage do not install the unit Contact your supplying dealer immediately Never modify this unit by removing any of the safety guards or bypassing any of the safety...

Page 8: ... for installation work Failure to do so may cause personal injury when handling parts with sharp edges Do not touch the air intake section or the aluminium fins of the outdoor unit It may cause injury Do not install the outdoor unit in a place which can be a nest for small animals Small animals could enter and contact internal electrical parts causing a failure or fire Request the user to keep the...

Page 9: ...s other than the above the safety protection functions may be activated Example of indoor unit class RAS B10UFV E1 is abbreviated as 10 Indoor unit class Standard connecting pipe diameter RAS 2M10U2AVG E RAS 2M14U2AVG E RAS 2M18U2AVG E RAS 3M18U2AVG E Unit C 07 or 10 or 13 6 35 9 52 mm Unit B 07 or 10 or 13 or 16 6 35 9 52 mm 6 35 9 52 mm 6 35 9 52 mm 3 6 35 9 52 mm 3 Unit A 07 or 10 or 13 or 16 6...

Page 10: ...if outdoor work is difficult you can change the procedure For example by making adjustments to the wiring and piping lengths on the inside rather than the outside When using an air conditioner under low outside temperature conditions Outside temp 5 C or lower In COOL mode prepare a duct or wind shield so that it is not affected by the wind Necessary Space for Installation If you need to install th...

Page 11: ... Do not remove the flare nuts for any ports you are not going to use for connection Do not leave the flare nut unattached for a long period of time Use a different diameter joint if the diameters of the connection port and connection piping are different Mount the different diameter joint on the connection port of the outdoor unit CAUTION KEEP IMPORTANT 6 POINTS FOR PIPING WORK 1 Take away dust an...

Page 12: ...ffect the terminals If wiring connections are incomplete or cables are not fixed securely it may cause a fire Be sure to ground the outdoor unit Incomplete grounding may lead to an electric shock 3 Close the Handle Low of the gauge manifold valve fully then stop operating the vacuum pump Leave the gauge and pump as they are for 1 or 2 minutes then make sure that the compound pressure gauge reading...

Page 13: ...for the power source and each indoor unit Connect the connecting cable to the terminal as identified by the matching numbers on the terminal block of the indoor and the outdoor unit 5 Fix the wiring connections for the power source and each indoor unit securely using a cord clamp 6 Attach the terminal cover and the valve cover Stripping Length of connecting cable for outdoor unit 55 5 5 30 1 2 3 5...

Page 14: ... or less Also there is a possibility to misjudge if the indoor temperature becomes too low by cooling operation In that case execute the cooling operation for per room and check if the connection is normal Gas Leak Inspection Refer to the Gas Leak Inspection on page 11 Test run 1 If you perform the test run in summer start running in the cooling mode first to decrease the temperature of the room t...

Page 15: ...he service valve at the liquid end 9 Make sure that the compound pressure gauge reading is 101 kPa 76 cmHg 10 Close the valve stem of the service valve at the gas end 11 The refrigerants collection operation is finished in maximum 10 minutes After the collection is finished promptly stop the operation of all the indoor unit There are cases that the compressor restarts 12 When you want to start ove...

Page 16: ...ture 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 co...

Page 17: ......

Page 18: ...144 9 Moo 5 Bangkadi Industrial Park Tivanon Road Tambol Bangkadi Amphur Muang Pathumthani 12000 Thailand 1116691098 ...

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