Daikin FXCQ125AVEB [13/30] Brazing place

Daikin FXCQ125AVEB [13/30] Brazing place
English 12
Before brazing refrigerant piping, have nitrogen flow through the refrigerant piping and substitute air with
nitrogen (NOTE 1) (Refer to Fig. 10). Then, carry out brazing (NOTE 2).
After all the brazing works are finished, carry out flare connection with the indoor unit. (Refer to Fig. 9)
NOTE
1. The proper pressure for having nitrogen flow through the piping is approximately 0.02MPa, a pressure
that makes one feel like breeze and can be obtained through a pressure reducing valve.
Sealing material (Small) (11)
(accessory)
Wrap the sealing material (Small) (11)
to the part of flare nut connection
Gas side piping insulating method
Liquid side piping insulating method
Piping insulating material (unit side)
Do not leave clearance
Clamp (4)
(accessory)
Flare nut connection
Bring the seam to the top
Joint insulating material (8)
(accessory)
Sealing material (Small) (11)
(accessory)
Wrap the sealing material (Small) (11)
to the part of flare nut connection
Piping insulating material (field supply)
Piping insulating material (unit side)
Do not leave clearance
Clamp (4)
(accessory)
Joint insulating material (9)
(accessory)
Flare nut connection
Bring the seam to the top
Piping insulating material (field supply)
Indoor unit
Fig. 9
Pressure reducing valve
Nitrogen
Taping
Stop valve
Brazing
place
Nitrogen
Refrigerant piping
Fig. 10
01_EN_3P249378-7M.fm Page 12 Wednesday, September 12, 2012 1:05 PM

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