Nordic VRF SYSTEM Installation Manual Download Page 3

En-3

Name and Shape

Q’ty

Application

Operation Manual

1

Installation Manual

1

(This book)

Cable tie (Large)

4

For fixing the connection 
pipe (Large and Small)

Cable tie (Medium)

3

For transmission and 
remote controller cable 
binding.

Coupler heat 
insulation 
(Small)

1

For indoor side pipe joint 
(Small)

Coupler heat 
insulation 
(Large)

1

For indoor side pipe joint 
(Large)

Template
(Carton top)

1

For installing indoor unit.

Washer

8

For installing indoor unit.

Insulation

1

For installing drain pipe

Drain Hose Assy

1

For installing drain pipe
VP25 (O.D.32, I.D.25)

Hose Band Assy

1

For installing drain hose

Drain Pipe
Insulation

1

For installing drain pipe

2.4. Optional parts

The following options are available.
•  External output wire (P/N 9379529006)
•  External input (voltage) wire (P/N 9368779016)
•  External input (no voltage) wire (P/N 9368779009)

3. INSTALLATION WORK

Especially, the installation place is very important for the split 
type air conditioner because it is very difficult to move from 
place to place after the 

fi

 rst installation.

3.1. Selecting an installation location

 

WARNING

• Select installation locations that can properly support the 

weight of the indoor. Install the units securely so that they do 
not topple or fall.

 

CAUTION

•  Do not install the unit in the following areas:

•  Area with high salt content, such as at the seaside. 
  It will deteriorate metal parts, causing the parts to fall or the 

unit to leak water.

• Area 

fi

 lled with mineral oil or containing a large amount of 

splashed oil or steam, such as a kitchen. 

  It will deteriorate plastic parts, causing the parts to fall or 

the unit to leak water.

• Area that generates substances that adversely affect the 

equipment, such as sulfuric gas, chlorine gas, acid, or 
alkali. 

  It will cause the copper pipes and brazed joints to corrode, 

which can cause refrigerant leakage.

• Area that can cause combustible gas to leak, contains 

suspended carbon fibers or flammable dust, or volatile 
in

fl

 ammables such as paint thinner or gasoline. 

  If gas leaks and settles around the unit, it can cause a 

fi

 re.

• Area where animals may urinate on the unit or ammonia 

may be generated.

• Do not use the unit for special purposes, such as storing 

food, raising animals, growing plants, or preserving precision 
devices or art objects. 

  It can degrade the quality of the preserved or stored objects.

• Do not install where there is the danger of combustible gas 

leakage.

• Do not install the unit near a source of heat, steam, or 

fl

 ammable gas.

• Install the unit where drainage does not cause any trouble.

• Install the indoor unit, outdoor unit, power supply cable, 

transmission cable, and remote controller cable at least 1 m 
away from a television or radio receivers. The purpose of this 
is to prevent TV reception interference or radio noise.

  (Even if they are installed more than 1 m apart, you could still 

receive noise under some signal conditions.)

• If children under 10 years old may approach the unit, take 

preventive measures so that they cannot reach the unit.

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Summary of Contents for VRF SYSTEM

Page 1: ...INSTALLATION 4 1 Selecting the pipe material 7 4 2 Pipe requirement 7 4 3 Flare connection pipe connection 7 4 4 Installing heat insulation 8 5 INSTALLING DRAIN PIPES 9 6 ELECTRICAL WIRING 6 1 Electri...

Page 2: ...cycle the pressure in the refrigeration cycle will become abnormally high and cause the piping to rupture If there is a refrigerant leakage make sure that it does not exceed the concentration limit If...

Page 3: ...or the unit to leak water Area filled with mineral oil or containing a large amount of splashed oil or steam such as a kitchen It will deteriorate plastic parts causing the parts to fall or the unit...

Page 4: ...he figure Strong and durable ceiling 3 000 mm or more H 1 800 mm or more 256 mm or more AUXD18 24 298 mm or more AUXA30 36 45 54 Obstruction 1 000 mm or more Floor 1 500 mm or more H The maximum heigh...

Page 5: ...20 45 mm 20 45 mm 20 45 mm 20 45 mm 130 mm 130 mm 80 mm 699 mm Hanging bolt pitch 950 mm Panel frame 860 910 mm Ceiling opening 840 mm Body frame 200 mm 130 mm 50 mm 50 100 mm 10 mm 40 mm 140 145 mm B...

Page 6: ...of at least 490 N per bolt Hole in anchor Hole in plug Concrete Insert Hanging bolt M10 3 3 3 Body installation 1 Install the attached washer and nut prepared on site onto the hanging bolt 2 Hook the...

Page 7: ...tion Use pipe with water resistant heat insulation CAUTION Install heat insulation around both the gas and liquid pipes Failure to do so may cause water leaks Use heat insulation with heat resistance...

Page 8: ...gainst the port on the indoor unit and then turn the flare nut by hand Connection pipe Liquid Connection pipe Gas 3 When the flare nut is tightened properly by your hand hold the body side coupling wi...

Page 9: ...wnward gradient 1 100 to 1 50 850 mm or less WARNING Do not insert the drain piping into the sewer where sulfurous gas occurs Heat exchange erosion may occur Insulate the parts properly so that water...

Page 10: ...tch the terminal block numbers and connection cable colors with those of the outdoor unit Erroneous wiring may cause burning of the electric parts Securely connect the connection cables to the termina...

Page 11: ...acity Recommended cable size mm2 Cable type Remark Power supply cable 2 5 Type245 IEC57 or equivalent 1 50 Hz 198 264 V 2 Cable ground Transmission cable 0 33 LONWORKS compatible cable 22 AWG LEVEL 4...

Page 12: ...the terminal screw tightening torques 7 Please do not fix 2 power supply cables with 1 screw Strip 10 mm Sleeve Screw with special washer Screw with special washer Ring terminal Cable Cable Terminal...

Page 13: ...minal board Remote controller connecting port Cure the wiring connecting port and remote controller connecting port with paste or heat insulation so that insects or dust will not enter the unit Wiring...

Page 14: ...evice 2 Load resistance Load resistance 1 DC power supply 12 24V connected unit a a P C B CN6 b 1 Make the power supply DC12 to 24V Select a power supply capacity with an ample surplus for the connect...

Page 15: ...ggered indoor unit stops and Start Stop operation by a remote controller is restricted When forced stop function is used with forming a remote controller group connect the same equipment to each indoo...

Page 16: ...or address setting by FIELD SETTING as follows Set by either of the methods Each setting method is described 1 to 3 below 1 IU AD REF AD SW settings This section 7 1 Setting the address 2 Remote contr...

Page 17: ...Rotary Switch Setting Refrigerant circuit REF AD SW Indoor unit IU AD SW 10 1 10 1 0 0 0 0 0 0 1 0 1 1 0 1 2 0 2 2 0 2 3 0 3 3 0 3 4 0 4 4 0 4 5 0 5 5 0 5 6 0 6 6 0 6 7 0 7 7 0 7 8 0 8 8 0 8 9 0 9 9...

Page 18: ...etting 02 01 Adjust 1 02 Adjust 2 Hot air tem perature trigger 31 00 Default Adjust the hot air trigger temperature To lower the trigger temperature by 6 degrees C use setting 01 To lower the trigger...

Page 19: ...Installation Manual for the outdoor unit if the PCB for the outdoor unit is to be used for the test operation 9 2 Test operation using Remote Controller Refer to the Installation Manual for the remote...

Page 20: ...ller Error CODE Error contents OPERATION lamp green TIMER lamp orange FILTER lamp red 1 2 Remote controller communication error 1 4 Anomalous network communications 1 6 Parallel communication error 3...

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