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5

English

Outdoor Unit Installation

2.

Flaring the pipe end. 

1) Cut the pipe end with a pipe cutter.
2) Remove burrs with the cut surface facing down-

ward so that the chips do not enter the pipe.

3) Put the flare nut on the pipe.
4) Flare the pipe.
5) Check that the flaring is properly made.

 WARNING

1) Do not use mineral oil on flared part.
2) Prevent mineral oil from getting into the system as this would reduce the lifetime of the units.
3) Never use piping which has been used for previous installations. Only use parts which are delivered with the unit.
4) Do never install a drier to this R410A unit in order to guarantee its lifetime.
5) The drying material may dissolve and damage the system.
6) Incomplete flaring may cause refrigerant gas leakage.

3.

Refrigerant piping.

 CAUTION

1) Use the flare nut fixed to the main unit. (To prevent cracking of the flare nut by aged deterioration.)
2) To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.)
3) Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage.

Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand.  Then tighten them fully with the torque wrenches. 

(Cut exactly at 

right angles.)

 Remove burrs

Set exactly at the position shown below.

A

Flaring

Die

Check

Flare’s inner 
surface must 
be flaw-free.

The pipe end must 
be evenly flared in 
a perfect circle.

Make sure that the 
flare nut is fitted.

A

0-0.5mm

Clutch-type

Flare tool for R410A

1.0-1.5mm

Clutch-type (Rigid-type)

1.5-2.0mm

Wing-nut type (Imperial-type)

Conventional flare tool

Torque wrench

Piping union

Flare nut

Flare nut tightening torque

 

Gas side

Liquid side

 

3/8 inch

1/4 inch

 32.7-39.9N 

l

 m 

14.2-17.2N 

l

 m

 

(333-407kgf 

l

 cm) 

(144-175kgf 

l

 cm)

Valve cap tightening torque

 

Gas side

Liquid side

 

3/8 inch

1/4 inch

 21.6-27.4N 

l

 m 

21.6-27.4N 

l

 m

  (220-280kgf 

l

 cm) 

(220-280kgf 

l

 cm)

Service port cap 

10.8-14.7N 

l

 m

tightening torque 

(110-150kgf 

l

 cm)

Do not apply refrigeration 

oil to the outer surface.

Flare nut

Apply refrigeration oil to 

the inner surface of the 

flare.

Do not apply refrigeration 

oil to the flare nut avoid 

tightening with over torque.

Spanner

[Apply oil]

[Tighten]

01_EN_3P232550-11C.fm  Page 5  Thursday, September 16, 2010  11:39 AM

Summary of Contents for RXL25G3V1B

Page 1: ...ON MANUAL Installation manual Installationsmanual Installationshandbok Installasjonsh ndbok Asennusohje Installierungshandbuch Manuel d installation Instrukcja montazu Installatiehandleiding R410A Spl...

Page 2: ...2010 KEMA Quality B V 74736 KRQ EMC97 4957 Umeda Center Bldg 2 4 12 Nakazaki Nishi Kita ku Osaka 530 8323 Japan DAIKIN INDUSTRIES LTD 3SB64417 12H RXL20G3V1B RXL25G3V1B RXL35G3V1B Shinri Sada Manager...

Page 3: ...ntrol box lid may result in electric shocks fire or over heating terminals If refrigerant gas leaks during installation ventilate the area immediately Toxic gas may be produced if the refrigerant come...

Page 4: ...are more than 3 meter away depending on radio wave conditions 8 In coastal areas or other places with salty atmosphere of sulfate gas corrosion may shorten the life of the air conditioner 9 Since dra...

Page 5: ...unit to install Tighten the screws Stop valve cover O D 9 5mm Gas pipe Liquid pipe O D 6 4mm 20g m 15m 20m Max allowable length Max allowable height Additional refrigerant required for refrigerant pip...

Page 6: ...of the foundation bolts Prepare four 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 length are 20mm...

Page 7: ...the flare nuts to prevent damage to the flare nuts and gas leakage Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand Then tighten them fully with the torque wrenches Cut...

Page 8: ...valve s service port 2 Fully open gauge manifold s low pressure valve Lo and completely close its high pressure valve Hi High pressure valve subsequently requires no operation 3 Do vacuum pumping and...

Page 9: ...insulation O D 9 5mm O D 6 4mm I D 12 15mm I D 8 10mm Minimum bend radius Thickness 10mm Min 30mm or more Thickness 0 8mm C1220T O Filling a cylinder with an attached siphon Stand the cylinder uprigh...

Page 10: ...s the indoor unit operation stop button Using the main unit s remote controller 1 Press the operation stop button Operation will start 2 Press the temperature button and the operation select button at...

Page 11: ...e heat exchanger of the unit is exposed to direct wind provide a windbreak wall 2 Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility s...

Page 12: ...ring to the power supply terminal board Precautions to be taken for power supply wiring Use a round crimp style terminal for connection to the power supply terminal board In case it cannot be used due...

Page 13: ...in its standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption If the circuit breaker trips to shut off t...

Page 14: ...1010 HT 3P232550 11C M10B236 Two dimensional bar code is a code for manufacturing 00_CV_3P232550 11C fm Page 2 Thursday September 16 2010 11 38 AM...

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