background image

Joint insulating 

material (9)

(accessory)

Piping holding plate screw
(2 points)

Gas piping

Liquid piping

Liquid side piping insulating method

Indoor unit

Indoor unit

Clamp (4)

(accessory)

Sealing material

(11) Medium-1

(accessory)

Sealing material

(12) Medium-2

(accessory)

Clamp (4) 

(accessory)

Piping 

insulating 

material

(field supply)

Gas side piping insulating method

Joint insulating 

material (8) 

(accessory)

Piping insulating 

material (main unit)

Bring the 

seam 

to the top.

Flare nut 

connection

Piping 

insulating 

material 

(field supply)

Do not leave 

clearance.

Flare nut 

connection

Bring the 

seam 

to the top.

Do not leave 

clearance.

Piping insulating 

material (main unit)

Wind around the 

piping until top of the 

flare nut connection, 

beginning at the base.

Wind around the 

piping, beginning 

at the base.

Do not expose the 

piping in order to 

prevent the vapor 

condensation.

Tighten the portion 

where overlapped by 

the piping insulating 

material.

Tighten the portion 

where overlapped by 

the piping insulating 

material.

Do not expose the 

piping in order to 

prevent the vapor 

condensation.

Fig. 12

• 

Before brazing refrigerant piping, have nitrogen flow 

through the refrigerant piping and substitute air with nitro-
gen (NOTE 1) 

(Refer to Fig. 13). Then, carry out brazing 

(NOTE 2). 

After all the brazing works are finished, carry out flare 

connection with the indoor unit. 

(Refer to Fig. 12)

Pressure reducing valve

Nitrogen

Taping

Stop valve

Brazing place

Nitrogen

Refrigerant piping

Fig. 13

NOTE 

1. 

The proper pressure for having nitrogen flow through the 

piping is approximately 0.02 MPa, a pressure that makes 
one feel like breeze and can be obtained through a pres-
sure reducing valve.

2. 

Do not use flux when brazing refrigerant piping.

 

Use phosphor copper brazing filler metal (BCuP-2: JIS Z 

3264/B-Cu93P-710/795: ISO 3677) that does not require 

flux.

 

(If chlorinated flux is used, the piping will be corroded and, 
in addition if fluorine is contained, the refrig erant oil will 

be deteriorated and the refrigerant circuit will be affected 
badly.)

3.  When carrying out leakage test of refrigerant piping and 

the indoor unit after the installation of indoor unit is fin

-

ished, confirm the connecting outdoor unit installation 

manual for test pressure. 
Refer to also the outdoor unit installation manual or techni-
cal document for refrigerant piping.

4.  In case of refrigerant shortage due to forgetting additional 

refrigerant charge etc., it will result in malfunc tion such as 
does not cool or does not heat. 
Refer to the outdoor unit installation manual or technical 
document for refrigerant piping.

 CAUTION

Do not use antioxidant when brazing piping.
It may result in malfunction of components and clogging of 
piping due to residue.

7.  DRAIN PIPING WORK

(1)  Carry out drain piping.

Carry out drain piping so that drainage can ensured.

• 

Select the piping diameter equal to or larger than 
(except for riser) that of the connection piping (polyvi-
nyl chloride piping, nominal diameter 25 mm, outside 
diameter 32 mm).

• 

Install the drain piping as short as possible with down-
ward inclination of 1/100 or more and without where air 
may stagnate. 

(Refer to Fig. 14) (It may cause abnormal 

sound such as bubbling noise.)

3P335596-2D        English 

8

Содержание FXFQ25SVM

Страница 1: ...ensing FXFQ25SVM FXFQ63SVM FXFQ32SVM FXFQ80SVM FXFQ40SVM FXFQ100SVM FXFQ50SVM FXFQ125SVM INSTALLATION MANUAL CAREFULLY READ THESE INSTRUCTIONS BEFORE INSTALLATION KEEP THIS MANUAL IN A HANDY PLACE FOR...

Страница 2: ...h may result in the air conditioner falling down and causing injury In addition it may lead to vibration of indoor units and cause unpleasant chattering noise Carry out the specified installation work...

Страница 3: ...ance that the refrigerant to be used for installation work is R410A The air conditioner will not properly operate if a wrong refrigerant is used For installation of the outdoor unit refer to the insta...

Страница 4: ...ing operation and the warm air discharge during the heating operation Does the indoor unit makes unpleasant sound of air discharge Have you explained how to operate the air conditioner showing the ope...

Страница 5: ...perature heat generating equipment is in stalled Each sensor has been set so that the center of the sensing area is located in the center of the product 800 mm above the floor in case of the infrared...

Страница 6: ...to reinforce the ceiling framework to keep the level of the ceiling and prevent vibration of the ceiling For details consult with the builder and interior designer 3 Install the hanging bolts Use M8...

Страница 7: ...n piping side gets high it may cause malfunction of a float switch and results in water leakage Attach nuts on the upper and lower side of hanger If there is no upper nut and the lower nut is over tig...

Страница 8: ...rench use Table 3 as a rule of thumb When tightening a flare nut with a spanner harder and harder there is a point where the tightening torque sud denly increases From that position tighten the nut ad...

Страница 9: ...nitrogen flow through the piping is approximately 0 02 MPa a pressure that makes one feel like breeze and can be obtained through a pres sure reducing valve 2 Do not use flux when brazing refrigerant...

Страница 10: ...the tip of the metal clamp 2 inward as shown Refer to Fig 16 In case of sticking vinyl tape Tightened part approx 90 Stick vinyl tape without tearing the sealing material Large 10 Vinyl tape In case...

Страница 11: ...ng the drainage of water refer to Fig 20 and attach the sealing material 14 to perform the thermal insulation of the drain socket Sealing material 14 accessory Fig 20 When the electric wiring work is...

Страница 12: ...nit always wiring the indoor unit to the terminal indicated with the same symbol on the terminal block If the wiring and the piping are connected to the different indoor units and operated it will res...

Страница 13: ...ning cannot be car ried out If a terminal is over tightened it may be damaged Refer to the table shown below for tightening torque of terminals Tightening torque N m Terminal block for remote controll...

Страница 14: ...supply wiring high voltage R10 or more R10 or more Strand the wirings after sheath is peeled off After the wirings are clamped cut off the extra part After the wirings are clamped cut off the extra pa...

Страница 15: ...L Remote controller option Remote controller option Remote controller option L N L N L N P1P2 F1 F2 T1 T2 P1P2 P1P2 F1 F2 T1 T2 P1P2 P1P2 F1 F2 T1 T2 P1P2 No 2 system When carrying out group control o...

Страница 16: ...ore 9 MOUNTING DECORATION PANEL CAUTION In case of a wireless remote controller unless the decoration panel is mounted field setting and test opera tion cannot be carried out Refer to the installation...

Страница 17: ...cleaning indication is not necessary such as the case of periodical clean ing being carried out TEST OPERATION After cleaning the indoor unit inside carry out test operation according to installation...

Страница 18: ......

Страница 19: ......

Страница 20: ...1310 FS 3P335596 2D EM13A007...

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