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8

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English

Outdoor Unit Installation

Re

fi

 lling the refrigerant

6. 

Check the type of refrigerant to be used on the machine nameplate.

Precautions when adding R410A
Fill from the liquid pipe in liquid form.

It is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal operation.

Before 

fi

 lling, check whether the cylinder has a siphon attached or not. (It should have something like “liquid 

fi

 lling 

1) 

siphon attached” displayed on it.)

Filling a cylinder with an attached siphon

Stand the cylinder upright when 
filling.

There is a siphon pipe inside, so the 
cylinder need not be upside-down to 
fill with liquid.

Filling other cylinders

Turn the cylinder upside-down 
when filling.

Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering.

• 

Refrigerant piping work

7. 

7-1 Caution on pipe handling 

Protect the open end of the pipe against dust and moisture.

1) 

All pipe bends should be as gentle as possible. Use a pipe bender for 

2) 

bending.

Selection of copper and heat insulation materials

7-2 

When using commercial copper pipes and 

fi

 ttings, observe the following:

Insulation material:  Polyethylene foam 

1) 

Heat transfer rate:  0.041 to 0.052W/mK (0.024 to 0.030Btu/fth°F (0.035 to 0.045kcal/mh°C))
Refrigerant gas pipe’s surface temperature reaches 230°F (110°C) max.
Choose heat insulation materials that will withstand this temperature.

2)  Be sure to insulate both the gas and liquid piping and to provide insulation 

dimensions as below. 

Gas side

Liquid side

Gas pipe thermal 

insulation

Liquid pipe thermal 

insulation

O.D. 1/2 inch 

(12.7mm)

O.D. 1/4 inch 

(6.4mm)

I.D. 0.551-0.630 inch 

(14-16mm)

I.D. 0.315-0.393 inch 

(8-10mm)

Minimum bend radius

Thickness 0.393 inch (10mm) Min.

1-9/16 inch (40mm) 

or more

1-3/16 inch (30mm) 

or more

Thickness 0.031 inch (0.8mm) (C1220T-O)

Use separate thermal insulation pipes for gas and liquid refrigerant pipes.

• 

Wall

If no flare cap is 
available, cover 
the flare mouth 
with tape to keep 
dirt or water out.

Be sure to 
place a cap.

Rain

Gas pipe

Liquid pipe

Gas pipe 
insulation

Liquid pipe 
insulation

Finishing tape

Drain hose

Inter-unit wire

01_EN_3P273470-2.indd   8

01_EN_3P273470-2.indd   8

1/6/2011   12:04:46 PM

1/6/2011   12:04:46 PM

Summary of Contents for RKN15KEVJU

Page 1: ...nstallation S rie split R410A Manual de instalaci n Serie Split R410A INSTALLATION MANUAL R410A Split Series Models RXN15KEVJU RKN15KEVJU RXN18KEVJU RKN18KEVJU RXN24KEVJU RKN24KEVJU 00_CV_3P273470 2 i...

Page 2: ...not play with them Children playing with plastic bags face the danger of death by suffocation Do not install unit in an area where flammable materials are present due to risk of explosion resulting i...

Page 3: ...nd fault circuit interrupter breaker may result in electrically shocks or fire personal injury CAUTION Do not install the air conditioner where gas leakage would be exposed to open flames If the gas l...

Page 4: ...10ft 3m away depending on radio wave conditions In coastal areas or other places with salty atmosphere of sulfate gas corrosion may shorten the life of the air conditioner 8 Since drain flows out of t...

Page 5: ...height Min allowable length Max allowable length 98 4ft 30m 4 92ft 1 5m 65 6ft 20m Liquid pipe Gas pipe O D 1 4 inch 6 4mm O D 1 2 inch 12 7mm 0 21oz ft 20g m Additional refrigerant required for refr...

Page 6: ...urely by means of the foundation bolts Prepare 4 sets of M8 or M10 foundation bolts nuts and washers each which are available on the market It is best to screw in the foundation bolts until their leng...

Page 7: ...damage to the flare nuts and gas leakage Flare nut tightening torque Liquid side 1 4 inch 6 4mm 10 4 12 7ft lbf 14 2 17 2N m Gas side 1 2 inch 12 7mm 36 5 44 5ft lbf 49 5 60 3N m Valve cap tightening...

Page 8: ...1MPa 1 3 Close gauge manifold s low pressure valve Lo and stop vacuum pump 4 Keep this state for a few minutes to make sure that the compound pressure gauge pointer does not swing back 2 Remove caps...

Page 9: ...ending Selection of copper and heat insulation materials 7 2 When using commercial copper pipes and fittings observe the following Insulation material Polyethylene foam 1 Heat transfer rate 0 041 to 0...

Page 10: ...operation to stop press the indoor unit ON OFF switch Using the indoor unit s remote controller Press MODE button and select the cooling mode 1 Press ON OFF button to turn on the system 2 Press both o...

Page 11: ...o tighten the screws Work before wiring A protection plate is fixed for protection from the high voltage section Before staring wiring work dismount the protection plate by removing the 2 screws and d...

Page 12: ...start back up once the temperature rises again Remove the 3 screws on the side and remove the top plate of the outdoor unit 1 Remove the drip proof cover 2 Cut the jumper J6 of the PCB inside 3 J5 J7...

Page 13: ...ion in accordance with the operation manual to ensure that all functions and parts 1 3 such as fin movement are working properly The air conditioner requires a small amount of power in its standby mod...

Page 14: ...3P273470 2 M10B141 1102 HT Two dimensional bar code is a code for manufacturing 00_CV_3P273470 2 indd 2 00_CV_3P273470 2 indd 2 12 15 2010 2 29 23 PM 12 15 2010 2 29 23 PM...

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