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Indoor Unit Installation

5. 

Laying piping, hoses, and wiring

• 

Lay the pipes, drain hose and 

G

 humidifying hose according 

to the orientation of the piping coming out of the unit, as 

shown in the fi gure. 

• 

Make sure the drain hose is sloped downward.

• 

Wrap the pipes, drain hose and 

G

 humidifying hose together 

using insulation tape.

Inter-unit wire

Liquid pipe

G

 Humidifying hose

Gas pipe

Drain hose

Insulation tape

Piping bundle diagram

5-1  Right-side, right-back, or right-bottom piping

• 

Right-side piping

• 

Right-back piping

• 

Right-bottom piping

Remove pipe port 
cover.

Install with a 
downward slope.

Remove pipe port 
cover.

G

 Humidifying hose

It is recommended to use 

an elbow (fi eld supply).

1)  Wrap the pipes, hose and inter-unit wire using insulation tape as shown in the piping bundle diagram.
2)  Put all the pipes through the through-hole in the wall and hook the indoor unit onto the 

A

 mounting plate.

3)  Connect the pipes.

5-2  Left-side, left-back, or left-bottom piping 

• 

Left-side piping

• 

Left-back piping

• 

Left-bottom piping

Remove pipe port 
cover.

Refrigerant pipe

G

 Humidifying hose

Drain hose

Refrigerant pipe

Remove pipe port 
cover.

G

 Humidifying hose

Refrigerant pipe

1) 

Replace the drain plug and drain hose. (Refer to “

4-3 How to replace the drain plug and drain hose

” on page 8.) 

2) 

Pull in the refrigerant pipes and lay them so that it matches the liquid and gas piping marked on the 

A

 mounting plate.

3)  Hook the indoor unit onto the 

A

 mounting plate. 

4) 

Connect the pipes. If it is diffi cult to do, remove the front panel fi rst.

5)  Wrap the insulation on the pipes with insulation tape. If you are not replacing the drain hose, store it in the location shown 

below.

Drain hose

G

 Humidifying hose

Inter-unit wire

A

 Mounting plate

Wrap insulation tape around the bent portion of 
refrigerant pipes. Overlap at least half the width 
of the tape with each turn.

Bind with plastic tape.

4 tabs

Cut off along the 
groove (both ends)

If installation is diffi cult, remove the pipe cover (4 tabs) and 

cut off the front grille (bottom).

Caulk this hole with 
putty or caulking 
material.

01_EN_3P338604-1E.indd   9

2/18/2019   14:09:19

Summary of Contents for RXZ25NV1B9

Page 1: ...llation manual R32 Split series Manuel d installation S rie split R32 Manual de instalaci n Serie Split R32 Manuale d installazione Serie Multiambienti R32 R32 R32 Montaj k lavuzlar R32 Split serisi F...

Page 2: ...tions on Installation of Outdoor Unit 12 Outdoor Unit Installation 12 1 Installing outdoor unit 12 2 Drain work 12 3 Flaring the pipe end 12 4 Refrigerant piping 13 5 Refrigerant piping work 13 6 Evac...

Page 3: ...power supply circuit only Insuf ciency of power circuit capacity and improper workmanship may result in electric shocks or re Use a cable of suitable length Do not use tapped wires or an extension le...

Page 4: ...break out While following the instructions in this installation manual install drain piping to ensure proper drainage and insulate piping to prevent condensation Improper drain piping may result in in...

Page 5: ...inlet and outlet are free of obstructions 3 the unit is not in the path of direct sunlight 4 the unit is away from the source of heat or steam 5 there is no source of machine oil vapour this may shor...

Page 6: ...t 11 the air is clean and there are no sources of unpleasant odours close by NOTE Cannot be installed hanging from ceiling or stacked CAUTION When operating the air conditioner in a low outdoor ambien...

Page 7: ...he ceiling surface Do not install the trap to the G humidifying hose as much as possible The are connection should be installed outdoors Install the hose with a downward slope Do not bend the G humidi...

Page 8: ...aining metal frame or metal board be sure to use a wall embedded pipe and wall hole cover in the feed through hole to prevent possible heat electrical shock or re Be sure to caulk the gaps around the...

Page 9: ...w eld supply bands at 10mm from the joint or an elbow eld supply to ing hose from coming off Use not more than 1 elbow to ensure humidifying capacity 4 3 How to replace the drain plug and drain hose R...

Page 10: ...ide left back or left bottom piping Left side piping Left back piping Left bottom piping Remove pipe port cover Refrigerant pipe G Humidifying hose Drain hose Refrigerant pipe Remove pipe port cover G...

Page 11: ...cting to the HA system Run the HA connection cord and attach the S21 Refer to Connecting to the HA system on page 18 6 Shape the wires so that the service lid ts securely then close the service lid 1...

Page 12: ...tube eld supply 5 When connecting a rigid polyvinyl chloride pipe nominal diameter 13mm directly to the drain hose attached to the indoor unit as with embedded piping work use any commercially availab...

Page 13: ...below 2 Drain work 1 Use H drain socket for drainage 2 If the drain port is covered by a mounting base or oor surface place additional foot bases of at least 30mm in height under the outdoor unit s fe...

Page 14: ...nt piping work 5 1 Cautions on pipe handling Protect the open end of the pipe against dust and moisture All pipe bends should be as gentle as possible Use a pipe bender for bending Be sure to place a...

Page 15: ...d 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 make sure that the compound pressure gauge read...

Page 16: ...al screws securely We recommend a athead screwdriver be used to tighten the screws The screws are packed with the terminal block 1 2 3 1 2 3 L N Power supply wire 3 core 2 5mm or more 60245 IEC 57 H05...

Page 17: ...unoperated for 60 seconds The display will return to the normal display 2 Press Select Hose length 3 Press to enter the humidifying hose length setting mode Be sure to direct the remote controller to...

Page 18: ...ling the front grille Removal method 1 Remove the front panel 2 Direct the ap and the auxiliary ap downward 3 Remove the streamer unit See Fig 1 4 Remove the screws that secure the front grille right...

Page 19: ...ite 4 Route the HA connection cord 5 Reattach the electrical wiring box cover to the original position 3 tabs 6 Reattach the front grille right streamer unit and front panel to the original positions...

Page 20: ...Pull down Dust box 2 Direct the display unit black upward and remove the air lter Display unit black Air lter 3 Install the B air purifying and deodorising lter B Air purifying and deodorising lter Ta...

Page 21: ...operly on solid bases Fall vibration noise narrower detectable range of the INTELLIGENT EYE sensor Are the air lter and the dust box attached properly Noise water leakage CLEANING FILTER operation dis...

Page 22: ...The two dimensional bar code is a manufacturing code 3P338604 1E M12B406D 1903 HT...

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