background image

 

Installation and operation manual

5

FXLQ20~6 FXNQ20~63P2VEB

VRV System air conditioners

4P323720-1 – 2012.06

For 

FXNQ

 units only

Refrigerant piping work

For refrigerant piping of outdoor unit, refer to the installation manual
supplied with the outdoor unit.

Before rigging tubes, check which type of refrigerant is used.

Use a pipe cutter and flare suitable for the used refrigerant.

To prevent dust, moisture or other foreign matter from infiltrating
the tube, either pinch the end, or cover it with tape.

Use copper alloy seamless pipes (ISO 1337).

The outdoor unit is charged with refrigerant.

To prevent water leakage, execute heat insulation work
completely on both sides of the gas and liquid piping. When
using a heat pump, the temperature of the gas piping can reach
up to approximately 120°C. Use insulation which is sufficiently
heat resistant.

Be sure to use both a spanner and torque wrench together when
connecting or disconnecting pipes to/from the unit.

Do not mix anything other than the specified refrigerant, such as
air, etc..., inside the refrigerant circuit.

Flares should not be re-used. New ones should be made in
order to prevent leaks.
Only use annealed flare nuts included with the unit. Using
different flare nuts may cause the refrigerant to leak.

Refer to the table below for the dimensions of flare nut spaces
and the appropriate tightening torque. (Overtightening may
damage the flare and cause leaks.)

When connecting the flare nut, coat the flare inner surface with
ether oil or ester oil and initially tighten 3 or 4 turns by hand
before tightening firmly.

Finally, insulate as shown in the figure below.

X

Height to reduce

NOTE

When mounting the unit to a wall, operating sound may
become bigger.

All field piping must be provided by a licensed refrigeration
technician and must comply with the relevant local and
national codes.

Place

Installation period

Protection method

More than a month

Pinch the pipe

Less than a month

Pinch or tape the pipe

Regardless of the period

13

9

10

8

9

8

10

13

12

12

11

1

1

2

4

3

X

X

Pipe gauge 

(mm)

Tightening 

torque (N•m)

Flare dimension 

A (mm)

Flare shape

Ø6.4

15~17

8.7~9.1

Ø9.5

33~39

12.8~13.2

Ø12.7

50~60

16.2~16.6

Ø15.9

63~75

19.3~19.7

Be sure to insulate local piping all the way into the
pipe connections inside the unit.
Exposed piping may cause condensation or may
cause burns when touched.

After all piping has been connected, use nitrogen to
perform a gas leak check. A toxic gas may be
released by the refrigerant gas leaking indoor and
being exposed to flames from an area heater, cooking
stove, etc. If the refrigerant gas leaks during the work,
ventilate the area.

1

Insulation for gas pipe (accessory part)

2

Sealing pad (accessory part) (wrapped over union)

3

Clamp (4x accessory part)

4

Gas pipe

5

Insulation for liquid pipe (accessory part)

6

Liquid pipe

1

2

4

3

1

Torque wrench

2

Spanner

3

Piping union

4

Flare nut

R=0.4~0.8

45

° ±

2

90

°±

2

A

1
2
3
4

6

5

Summary of Contents for FXLQ20P2VEB

Page 1: ...NSTALLATION AND OPERATION MANUAL FXLQ20P2VEB FXLQ25P2VEB FXLQ32P2VEB FXLQ40P2VEB FXLQ50P2VEB FXLQ63P2VEB FXNQ20P2VEB FXNQ25P2VEB FXNQ32P2VEB FXNQ40P2VEB FXNQ50P2VEB FXNQ63P2VEB System air conditioners...

Page 2: ...D OUT D F1 F2 F1 F2 Control box L N L N P1 P2 P1 P2 P1 P2 P1 P2 P1 P2 F1 F2 T1 T2 P1 P2 F1 F2 T1 T2 P1 P2 F1 F2 T1 T2 P1 P2 F1 F2 T1 T2 3 1 4 2 L N L N L N L N 2 1 2 3 7 9 8 10 4 5 6 L N IN D OUT D F1...

Page 3: ...B de acuerdo con el Certificado C 06 Nota delineato nel A e giudicato positivamente da B secondo il Certificato C 07 A B C 08 Nota tal como estabelecido em A e com o parecer positivo de B de acordo c...

Page 4: ...d below Places with mineral oil or filled with oil vapour or spray like in kitchens Plastic parts may deteriorate Where corrosive gas like sulphurous gas exists Copper tubing and brazed spots may corr...

Page 5: ...class A product In a domestic environment this product may cause radio interference in which case the user may be required to take adequate measures Keep indoor unit outdoor unit power supply wiring a...

Page 6: ...otating the discharge grille NOTE Make sure no short circuit of air is caused when placing the unit directly under a windowsill 100 100 1000 20 A B C C A 1750 B 1750 C B b 20 20 C A A B C B Model 20 2...

Page 7: ...alling over either fasten to the wall using the holes provided or fasten to the floor with a field supplied floor fastener Wallmounted installation 1 Positioning of holes for fastening to the wall Uni...

Page 8: ...ghtening torque Overtightening may damage the flare and cause leaks When connecting the flare nut coat the flare inner surface with ether oil or ester oil and initially tighten 3 or 4 turns by hand be...

Page 9: ...ure from mixing into the system Vacuum pump Use a 2 stage vacuum pump with a non return valve Make sure the pump oil does not flow oppositely into the system while the pump is not working Use a vacuum...

Page 10: ...to the table below When attaching the control box lid make sure not to pinch any wires and make sure that the wiring does not come in contact with the piping and sharp edges After all wiring connectio...

Page 11: ...0 6 16 0 025 0 5 50 0 6 16 0 035 0 5 63 0 6 16 0 035 0 5 MCA Minimum Circuit Amps A MFA Maximum Fuse Amps A FLA Full Load Amps A NOTE For details refer to Electrical data in the technical data book P...

Page 12: ...operation 1 Wire specifications and how to perform wiring Connect input from outside to terminals T1 and T2 of the terminal board remote controller to transmission wiring 2 Actuation The following ta...

Page 13: ...t been finished Error code Meaning There is a short circuit at the forced off terminals T1 T2 U4 or UH The power on the outdoor unit is off The outdoor unit has not been wired for power supply Incorre...

Page 14: ...the air filter make sure to attach it Turn on the main power supply switch The control panel display lights up when the power is turned on To protect the unit turn on the main power switch at least 6...

Page 15: ...TIONAL ACCESSORY X18A CONNECTOR WIRING ADAPTOR FOR ELECTRICAL APPENDICES WIRED REMOTE CONTROLLER R1T THERMISTOR AIR SS1 SELECTOR SWITCH MAIN SUB TERMINAL BLOCK BLK BLACK PNK PINK CONNECTOR BLU BLUE RE...

Page 16: ...Copyright 2012 Daikin 4P323720 1 2012 06...

Reviews: