Daikin FXZQ-MVJU9 Engineering Data page 36

Installation
Not recommended but in case of emergency:
You must use a torque wrench but if one is not available, you may follow the installation method
described below.
Pipe size
ø1/4"
ø1/2"
CAUTION
CAUTION TO BE TAKEN WHEN BRAZING REFRIGERANT PIPING
refrigerant oil.
the piping.
and could cause system malfunction.
When brazing the refrigerant piping, only begin brazing after having carried out nitrogen substitution
or while inserting nitrogen into the refrigerant piping. Once this is done, connect the indoor unit with a
Nitrogen should be set to 2.9 psig with a pressure-reducing valve if brazing while inserting nitrogen into
the piping. (Refer to Fig.15)
Refrigerant piping
(Refer to Fig. 16)
3P184443-12N
34
Further tightening angle
Part to be
brazed
Nitrogen
English
Recommended arm length of tool
Taping
Pressure-reducing valve
Hand valve
Nitrogen
Fig. 15
(Refer to Fig. 16)
EDUS391300-F9
12
3P184443-12N
FXZQ-MVJU9