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Daikin RXYQ5PY1 Service Manual: Refrigerant Pipe Work

Daikin r-410a heat pump 50hz/60hz cooling only 50hz.
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Installation

3.2.3 Refrigerant Pipe Work

! Operational steps
The 3 Principles
The "3 principles of refrigerant piping" must be strictly observed
of Refrigerant
Piping
Make sure there is no moisture
inside the pipes
22
Install indoor unit
Cut pipes to size
Solder
Cause of problem
Rainwater, work water, etc.
gets into pipes from outside
Moisture generated inside
pipes due to condensation
Formation of oxides inside
pipes during soldering
Dirt, dust or other
extraneous material gets
into pipes from outside
Leak from soldered area
Leak from flared area
Leak from flange area
Dry
Moisture
Fit pipes
provisionally
Flushing
Air tight test
Actoin to avoid problem
Pipe covering
Replace nitrogen
Pipe covering
Use the proper materials (copper pipe,
solder, etc.)
Adhere strictly to standard soldering
work practice
Adhere strictly to standard flaring work
practice
Adhere strictly to standard flange
connection work parctice
The 3 principles of refrigerant piping
Clean
Make sure there is no dirt inside the
pipe
Dirt
SiEN34-705
Replace nitrogen
Vacuum drying
Flushing
Vacuum drying
Flushing
Air tight test
Air tight
Make sure the refrigerant does not
leak out
General Information
(V0963)
(V0964)
Leak

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