![background image](http://html1.mh-extra.com/html/daikin/fxaq-m-series/fxaq-m-series_engineering-data_2459642031.webp)
Installation
EDUS39-600-F6
30
FXAQ-M
CAUTION
•
CAUTION TO BE TAKEN WHEN BRAZING REFRIGERANT PIPING
Do not use flux when brazing refrigerant piping. Use the phosphor copper brazing filter metal (BCuP) which does not
require flux.
Flux has an extremely negative effect on refrigerant piping systems. For example, if chlorine based flux is used, it will
cause pipe corrosion. If the flux contains fluorine, it will damage the refrigerant oil.
•
When brazing the refrigerant piping, only begin brazing after having carried out nitrogen substitution (NOTE 1) or
while inserting nitrogen into the refrigerant piping (NOTE 2). Once this is done, connect the indoor unit with a flared or
a flanged connection.
DANGER
•
Use of oxygen may cause an explosion resulting in serious injury or death. Only use nitrogen gas.
NOTE
1. Refer to the
Manual for Multi Installation for Buildings
for directions on how to carry out nitrogen substitution. Ask
your dealer.
2. Nitrogen should be set to 2.9 psi with a pressure-reducing valve if brazing while inserting nitrogen into the piping.
(Refer to Fig. 14)
•
After checking for gas leaks, be sure to insulate the pipe connections using the supplementary piping insulation
tubing and insulating tape (4). The insulating tape (4) should be wrapped from the L-shaped bend all the way to the
end inside the unit.
(Refer to Fig. 15)
CAUTION
•
Be sure to insulate any field piping all the way to the piping connection inside the unit. Any exposed piping may cause
condensate or burns if touched.
Refrigerant piping
Part to be
brazed
Taping
Pressure-reducing valve
hands valve
Nitrogen
Fig. 14
Nitrogen
Insulating tubing tape
Insulating tubing tape
Local piping
Indoor unit piping
Indoor unit piping insulation tubing
Clamping material large
(accessory) (5)
Insulating tape (accessory) (4)
L-shaped
bend
Start wrapping
See “ 4.INDOOR UNIT
INSTALLATION ”
Indoor unit piping insulation tubing
Insulating tubing tape
Insulation tubing seam
Attach the insulation tubing
tape so that there are no gaps
in the insulation tubing seam.
Fig. 15
Summary of Contents for FXAQ-M Series
Page 1: ...EDUS 39 600 F6 AMERICAS FXAQ M Wall Mounted Type...
Page 6: ...EDUS39 600 F6 Dimensions FXAQ M 5 3 Dimensions FXAQ07 09 12MVJU 3D046040A...
Page 7: ...Dimensions EDUS39 600 F6 6 FXAQ M FXAQ18MVJU 3D046041...
Page 8: ...EDUS39 600 F6 Dimensions FXAQ M 7 FXAQ24MVJU 3D046042...
Page 10: ...EDUS39 600 F6 Wiring Diagrams FXAQ M 9 5 Wiring Diagrams FXAQ07M 09M 12M 18M 24MVJU 3D046039C...
Page 11: ...Electric Characteristics EDUS39 600 F6 10 FXAQ M 6 Electric Characteristics 4D046466A...
Page 20: ...EDUS39 600 F6 Installation FXAQ M 19 10 Installation Installation Example...